The client can require the appearance of laser pointer

laser pointer can be used to detect the currency.
Ministry of Education recently issued a document published in 2006, "Cheung Kong Scholars and Innovative Research Team" list of selected team, school leaders, Materials and Chemical Engineering Professor Yang Deren functional materials research team selected one. Integration in all areas of the innovation team, outstanding professional experts, high level of research groups, as the goal of high performance functional materials around new functional materials preparation, structure and performance control, establish the theoretical system, to achieve a series of technological innovation. Targeting national pillar industry. The information industry is the pillar industry, dependent on advances in information technology development and application of information functional materials. Over the past few decades the development of information technology is built on the basis of the continuous development of silicon material as the cornerstone of the integrated circuit industry. The client can require the appearance of laser pointer .
From the microelectronics era of the integrated circuit industry toward nanoelectronic, optoelectronic integrated era. In the foreseeable future, the silicon material will continue to play a most important role in the IC industry and IC industry will continue to occupy the most important position in the information society. On the other hand, the increasing development of information society, large-capacity information transmission, high-speed data processing and high-density storage increasingly high demands. To meet this demand, world-wide are actively exploring the development of new information technologies and materials, such as: silicon-based integrated optoelectronics, new laser sources, nonlinear optoelectronic materials, composite optoelectronic functional materials, and continue to make new breakthroughs and progress. The color of laser pointer has been determined.The manufacturer of laser pointer is relatively less and the cost is higher
In recent years, China's information industry is developing rapidly, the urgent demand for information functional materials research and development of independent innovation. It is significant demand in this country, the team of semiconductor materials based on various disciplines, the direction of the cross together the research of new features excellent functional materials preparation, performance control and device applications. In this context, Materials and Chemical Engineering Professor Yang Deren as the leader of the research team established research interests: Functional Materials for Informatics. The team around new functional materials preparation, structure and performance control, to achieve on-demand design, information materials for preparation of the special features of the target.

The manufacture enriches the top selling list of green laser pointer

Top Selling of green laser pointer
Figure (a), along the steep wave front, the big bell at the inlet hole, the middle of a larger taper, ending the most pointed, the worst-shaped hole; (b) before and after the waveform along the steep, wave was flat shape, the trumpet entrance hole decreases, the middle section of the taper hole decreases, ending blunt tip, hole shape is relatively good; (c) is a complex waveform modulation to obtain a laser pulse, along the steep slope before and after the middle section of the upward wave, the smallest bell inlet hole, the hole was cylindrical middle section, if the laser intensity increased with increasing hole depth to match the ending twist drill hole near the bottom, was round-shaped nest. The manufacture enriches the top selling list of green laser pointer .
This is because the laser light intensity and gradually increase to compensate for the increase in hole depth to reduce the incident energy, the smaller taper, the laser along the steep, high power is conducive to their discharge of liquid substances, the minimum recast layer, and thus the hole at the end of the shape of the best. Focus position: negative defocus, due to convergence of the laser light to enter the material, the hole depth is certain, it can not be directly affected by the pore wall flux, but by its phase-change heat transfer, so the less liquid than gas, vapor, when pressure is not too large, jet force is small, there is a greater residue accumulation may melt the hole wall deformity, and in severe shot hole has been completely blocked. With negative defocus amount punch, hole or shaft barrel was tapered profile. The top selling list of green laser pointer contains all products which are welcome in the market.
Is out of focus and in a certain range of values, because the laser light shines directly on the pore walls, so that the hole wall directly affected by the flux, sometimes after several reflections before being shot hole, so the phase change material is almost directly in the laser light exposure occurs, as long as there is enough light power density, the material gas than liquid. Pore walls are straight, not easy to melt residue accumulation, hole shape the best quality. Is out of focus and defocus amount is large, the material on the surface of a large deviation from the focal plane, the material on the surface of the average light power density is too small, only a small amount of material vaporized, liquefied, or only make it so often can only form a pit, you can not punch. Defocus amount the size of the selection: the thickness of the part to be machined, the aperture size and other factors.

The technology development of laser pointer is the key point

 The technology development of laser pointer is the key point.
When cleaning, be careful not to make any liquid into the power line side of El or shed inside the camera; plug in the power and turn the unit on. The cleaning of the laser head. Turn off the power; to open the device in accordance with the camera manual; use a small amount of ethanol soaked lint-free cloth and gently wipe along the same direction, not to lift the cloth, do not put any pressure on the laser head, so as not to cause damage; installed equipment on the power. Laser camera card. Card laser camera, generally the fault tips: Film Jam,. The cause of the card. Such as: film input tray can not send the piece drive shaft axis ask the friction force does not match the sensor failure, a sudden power outage. The design improvement of laser pointer has been finished.
Therefore, require careful analysis, to accurately determine the card position, the right medicine, clear the film was stuck. Dry Laser camera; principle. Medical laser camera is a highly developed product of the modern information technology, medical imaging field indispensable image storage device. Dry Laser camera using the micro-isolation techniques, relying on a direct thermal recording method to imaging, mainly composed of six parts: switching power supply, the image control section, caught piece agencies control part, laser printing part of the film transmission parts, film developing rotating heated part. The following details about each part of the structure. Part of the circuit of the laser camera adapt to their working power. Functions of laser pointer are perfect or practical enough.The green laser beam light of laser pointer is more suitable to be used
Image Control section. To sort out the image signal coming from the CR, CI ', MR and other imaging equipment, in accordance with the various imaging equipment to shoot the film format to format, while the contrast of the image density to be adjusted. The image control portion controlled by a computer is the core of the laser camera. Image signal is passed to a laser camera, after a series of amendments to deal with, adjust image dimensions, size, layout. The laser head based on the layout after the image signal output strength of the different laser, thus completing the film scanning process. The processing capability of the laser camera determines the camera's image quality, adaptability and range of applications. Grasping piece institution control section. The customer can find out some items and points concerning about the function and performance of laser pointer .It is compared with other kinds of laser pointer
Recommendations on the purchase of the camera.

Power supply of laser pointer is three pieces of AAA batteries

Power supply of laser pointer is three pieces of AAA batteries. 
Directly modulated optical transmitter, the RF signal after RF amplification, electronically controlled attenuation and pre-distortion compensation, direct-drive laser, the optical output intensity varies with the RF signal intensity changes. For the stability of the laser, the ATC is necessary, the general temperature control of laser die at 25 ° C; laser light power and nonlinear distortion depends on the bias current, bias control and pre-distortion compensation for optical transmitters key components; optical transmitter carrier to noise ratio and nonlinear distortion index depends on the optical modulation system, automatic control of the optical modulation system is also excellent optical transmitter must. laser pointer is with learning code.
Direct intensity modulation process, with the changes of the RF signal strength, the light frequency (or wavelength) changes, the additional frequency modulation, which is unwanted frequency modulation effects, these additional frequencies of light in optical fibers can cause dispersion, one of the reasons for the nonlinear distortion of optical transmission systems, directly modulated optical transmitter of the second order distortion products - especially the combination of second-order distortion (CSO) are more C / CSO, lower, about 60dB or so; In addition, direct modulation of the optical transmitter output optical power is relatively small, mostly in 20mW; These are the inadequacies of direct intensity modulation techniques, but due to the optical transmitter is a simple structure, low manufacturing costs, short-distance optical transmission The system has been widely used in today's wired network, 1310nm optical transmitter system accounts for more than 50% market share. Fiber fracture mechanism. Fiber fracture is due to the fiber in the fiber manufacturing process of micro-cracks in the role of the application of force, and gradually deepened, When microcrack deepened to more than the critical value, the fiber breaks. Fused fiber coupler production method is simple, cheap and easily with an external fiber-optic connections to become a whole, and can be resistant Fu mechanical vibration and temperature change, the current manufacturing technology of the mainstream market.
The opening sleeve using a highly flexible material, such as phosphor bronze, beryllium copper and zirconia ceramics produced when the pin is inserted into the sleeve after the sleeve pin of the clamping force should remain constant, these three materials sleeve application, but the majority of beryllium bronze and zirconia ceramic.

The logo of laser pointers is of the special design

The laser pointers company can provide the OEM production of laser pointers .
To the principle of laser mole is that the laser in an instant burst of color organizations put tremendous energy, and break the pigment decomposition, it can be swallowed by macrophages out, and then be excreted with the lymphatic circulatory system, thus achieve the purpose of the pigment to remove. Laser mole can be applied to many types of moles, such as including the three mentioned above nevi, nevus, port wine stains, etc., effects are obvious, and not easy to scars, the risk is small. Also go with a carbon dioxide laser mole. First. Ocular inflammation and disease activity; second. Purulent eye lesions; third. Has been diagnosed with keratoconus; fourth severe dry eye syndrome, Sjogren's syndrome associated with systemic; fifth central cornea thickness less than 450μm. The logo of laser pointers is of the special design.
Sixth severe ocular adnexal lesions: eyelid defect, deformation, chronic dacryocystitis, etc.; seventh, systemic connective tissue disease and severe autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, multiple [1 ] sclerosis. High myopia with posterior staphyloma persons; 2 average initial preoperative central corneal curvature less than or greater than 47D 39D should be careful; 3 dark light, the pupil diameter greater than 7mm; 4. Contralateral eye as legal blindness; 5.2 years, suffered from herpes simplex keratitis; 6 mild cataracts; 7 has a history of retinal detachment and macular hemorrhage; 8 mild dry eye; 9 mild blepharophimosis dysraphism; 10 patients with suspected glaucoma ; 11 menstrual period and pregnancy; 12 physical scars; 13 diabetes; 14 with a fever and other physical discomfort; 15 epilepsy; 16 anxiety disorders, depression, and those who expect too much of the surgery. The logo of laser pointers impresses the customer deeply.
1917: Albert Einstein that "stimulated emission" theory, a photon makes the excited atoms emit an identical photon. 1953: American physicist Charles Townes microwave lasers to achieve a predecessor: microwave amplification by stimulated emission .1957 years: Townes's doctoral student Gordon Gould created the "laser" This word, in theory that the excited atom can be used up to produce a bunch of coherent light beam, after it applied for its patent-related legal disputes lasted nearly 30 years. 1960: California, USA Hughes Laboratory Theodore Maiman achieved the first laser beam .1961 years: laser surgery for the first time in the retina to kill the tumor. 1962: invention of semiconductor diode lasers, which is the backbone of today's small commercial lasers. Waste bunker: bunker is to accommodate the waste toner waste repository, its capacity is limited, although the process of developing the vast majority of toner will be transferred to the paper, but there will be a small part of the waste toner.

The direction problem of IR technology of laser pointer

By RF technology, the direction problem of IR technology of laser pointer is solved.
Not only inherent loss factor, but also consider the impact of the splitting ratio. Between different fiber optic coupler, the insertion loss difference does not reflect the merits of the quality of device fabrication. 1 * N single-mode standard optical splitter excess loss in the table below: split ratio defined as the ratio of the output power of the optical splitter output ports in the system application, the determination of the splitting ratio is based on the actual system optical node the number of required optical power to determine the appropriate split ratio , optical splitter, the splitting ratio to and transmission of light wavelengths, such as an optical splitter in the transmission of the 1.31-micron light two outputs splitting ratio of 50:50. laser pointer will save a lot of trouble for teachers, lecturers and other users.
Transmission 1.5μm light into a 70:30 . Customized optical splitter must specify the wavelength. Isolation refers to the isolation of the optical splitter of a light path of the optical signal in the other optical path. In the above indicators, the degree of isolation is even more important for the significance of the optical splitter, in the actual system applications often require the isolation of 40dB above the device, otherwise it will affect the overall system performance. Prices of laser pointer having USB flash disks are relatively higher.The battery of laser pointer is the 16340 specification
In addition, the stability of the optical splitter is also an important indicator, the so-called stability refers to the outside temperature changes, the change of status of other devices, optical splitter splitting ratio and other performance indicators should remain basically unchanged. In fact, the stability of the optical splitter depends entirely on the manufacturer's level of technology, products from different manufacturers, the quality gap considerably. In practical applications, I did encounter a lot of the poor quality of the optical splitter, not only the performance to deteriorate quickly, and the damage rate is very high for an important device of the fiber optic trunk must be noted at the time of purchase, you can not look at prices, low technological level of the optical splitter price is certainly low. laser pointer can run smoothly in systems such as WIN98/2000/ME/XP and so on.
Optical attenuator is a very important fiber optic passive components, is an indispensable device in optical fiber CATV. So far the market has formed a fixed, step adjustable, continuous adjustable and intelligent optical attenuator four series.

It is the high cost performance of laser pointer

It is the high cost performance of laser pointer .
The signal amplification, the selected frequency and pulse demodulation, since the output low, after VT1 reverse, acting on the D1 side of BA5204, through the circuit, the decoded output by the BA5204 3 to 10 feet the control signal. When press the transmitter K1 ~ K6 any to BA5204 corresponding HP-ended output high, release the launch button, the output low; CP1, CP2 end is self-locking reverse level output when you press the K7 , K8, a key, flip of the the BA5204 corresponding CP-ended output level, each time you press, the output level flip once. C1, C2 end user code input. There are four kinds of encoding requirements BA5104 of C1, C2 side settings. Capacitor C1, resistor R2 and BA5204 13 feet of the internal circuit, oscillation circuit, a frequency of 38kHz. The customer should choose laser pointer according to the actual needs of themselves.Avoid causing damage to roads and transport facilities around a major traffic accident. The use of laser photoelectric switches can detect ultra-high vehicle overrun. Figure 12 Schematic diagram of the train vehicle detection devices. Magnetic transducers installed to drive direction about 100m from the detection system, when the wheels of the locomotive of a magnetic transducer, the device boot signal sent to the detection system, the system started working. When the vehicle through the detection system, if an object blocked the laser beam, the receiver will send out alarm signals, if you configure a set of software according to statistics compiled by the axle of the vehicle structure and vehicle can be informed Which car, ultra-high overrun. The higher the performance of laser pointer is, the higher the cost performance of the laser pointer is.
However, at this time need two magnetic sensors installed at regular intervals. Auxiliary information in order to provide the necessary wheel spacing, and speed. Textile system. In the textile industry, there are a lot of spinning machinery in the work of more than ten meters wide, spinning machinery, a number of spindles in operation, if a yarn break, you need to be shut down by the operator to connect the decapitation . Laser photoelectric switch off yarn online testing operations. In the bottom of the cotton yarn path, the vertical direction of movement in cotton yarn, install the transmission of laser transmitters and receivers, so that block the path of the laser beam receiver output alarm signal, so stop spinning machinery, cotton yarn break whereabouts at this time can be completed in the wiring. And at the same time, the lower the price of laser pointer is, the higher the cost performance of the laser pointer is. Recently, we introduced a smaller, portable laser marking machine, the machine is only the computer chassis generally.

Al transmitter box that contains the main part of the electronic unit

 Quality of some laser pointer should be improved.
Pulsed laser ranging and radar ranging principle is similar to a laser rangefinder to the target signal, hit the target will be reflected back, due to the propagation velocity of light is known, so long as the optical signal recorded round-trip time, with the speed of light (30 million km / s) multiplied by the round-trip time of the half, that is, the distance to be measured. Now widely used in handheld and portable range finder, the role of number of meters up to tens of kilometers away from the measurement accuracy of five meters. China developed high-precision range finder for satellite ranging measurement accuracy can reach a few centimeters. Continuous-wave phase-shift laser rangefinder is a continuous modulation of the laser beam irradiation test target, resulting from the measurement beam from the phase change, can be converted to a measured target distance. The technical standard of laser pointer is important and necessary to laser pointer .
To ensure accuracy, generally installed on the test target laser reflector. It measures the relative error is one in a million. Laser range finder combined with microwave radar, laser wave velocity can also play a narrow specialty, make microwave radar work by the low elevation of the lack of ground disturbance. Laser ranging and optical theodolites, infrared and television tracking system combined to form the optical tracking system, both as a range test of measuring equipment, but also commonly used as a weapon of optical fire control system. Establish a remote wireless digital communications networks, remote data acquisition, data analysis and monitoring functions, and use of our strong technical support team to provide customers with services such as diagnostics, software upgrades and specialized custom. II laser gas analyzer installed that is, check the manual This manual contains installation, operation and maintenance of the laser gas analyzer, EEx p version (ATEX certification) of Also include a description of the laser gas analyzer and its basic characteristics. Please read carefully before using the laser gas analyzer parts III and IV. It is a state-of-the-art precision instruments, and run the state contains a large number of electronic and laser technology. Installation and maintenance of the instrument to be careful and prepared. Power Supply Unit 100-240V AC to 24V DC. Power supply box through the Ex-p control system connected to the transmitter box. From outside the gas temperature / pressure sensors on the 4-20 mA input signal is connected to the firing unit inside the terminal. Emission unit and receiver unit with a cable connection. From the photodetector to detect the absorption signal is enhanced, and transported to the firing unit through the cable. This is also a power supply cable. Al transmitter box that contains the main part of the electronic unit.This greatly reduces the requirements of the cleanliness of optical components and optical adjustment.Please note the following procedures need to consider the Ex-p control system.

The quality and performance of laser pointer can be improved

The quality and performance of laser pointer can be improved
Analysis of the Bode diagram of the existing system can be seen that the existing system is stable, but not good enough. Low frequency approximation of the existing system in a straight line, the low-frequency gain is obvious enough. Frequency area is too wide, but in general the bandwidth of the switching power supply is located in the switching frequency of 1/10 ~ 1/20, poor high-frequency anti-jamming capability. Therefore need to design a controller to correct the Bode diagram of the entire system. Can be seen from the Bode diagram of the system can only use an integral part of, or the phase angle will be drastically reduced to -180, resulting in system instability. Only an integral part of the low-frequency gain slope is not steep, but to ensure the stability. Set at 100Hz at a low frequency zero. The five laser caps can be attached to the blue laser, green laser and red laser of laser pointer .
Because the grid voltage after bridge rectifier to 100Hz sinusoidal half-wave into the 100Hz pulsating DC smoothing filter in the input filter capacitor, this pulsating current control system input voltage.This means that the gain of the 100Hz signal 2, which can effectively resist such input voltage fluctuations. The entertainmental effect created by the blue laser pointer is good enough.
At 1KHz, the phase decreases rapidly to compensate for this phase, a zero increase in phase. The corner frequency set to 1000Hz, the transfer function is set to 0.001s +1, can provide about 45 of the phase advance. The figure shows that the crossover frequency is not in the frequency area, the crossover frequency is set at about 1/10 of the switching frequency, need to gain to enhance the overall 44dB, then take K = 150. Income Bode diagram in Figure 47 as shown. This chapter briefly describes the structure and design ideas for the entire software system. For real-time requirements for different tasks, how to make reasonable arrangements. Digital controller to do a detailed study, a detailed record of the model derivation, the controller design process. Discussed in this paper is to reflect the true of my bachelor's degree are engaged during the DSP fully digital laser power development projects. The aluminum case is convenient for the customer to hold all parts and components of laser pointer .

This structure laser pulse compression and passively mode-locked dye laser system

 Some staff members give their suggestion about the promotion activity of laser pointer .
Wavelength tuning range of 562.5-604.5nm, than the passive mode-locking saturable absorber tuning range. Like this with the pump pulse synchronous gain modulation method, because in two or more different wavelengths of light to be synchronized with the signal pulse sequence, so in many spectral measurements will be applied. Used to passively mode-locked dye saturation method, due to saturable absorption saturation and dye for the dye laser medium with gain saturation effects exist, so the available pulse width is very narrow. Solid-state lasers with different, even in the case of low input, but also the rapid formation of the gain saturation effects, the use of a long recovery time can also be saturated mode-locked dye. Now, a continuous passive mode-locked dye laser to generate ultrashort optical pulses of a mature technology. Focus on the two-cavity saturable gain optically pumped dye (Rhodamine 6G) and the saturable absorber dye (DODCI) at 514.5nm with the work of the hydrogen ion laser as the pump source. The manager decides to implement the strategy of price-off sales to push the sales of laser pointer .
As the cavity components to a minimum, reduce the group velocity dispersion, and to maintain broadband oscillator cavity, which is the formation of ultrashort optical pulses are required. This structure laser pulse compression and passively mode-locked dye laser system is very similar. If we consider the introduction of a ring cavity surrounded by the light pulse, as it many times are subject to amplification and gain dye saturable absorber dye absorption, the light pulse is shaping. Leading edge by the saturable absorber priority clipping. Forefront of priorities pulse amplification laser cavity coupled with the loss of so many times by the pulse along the cavity when they are effectively limiting, until it reaches the limit of pulse width.
Number of variables in the wave Raman spectra, the Stokes lines and anti-Stokes lines distributed symmetrically on both sides of the Rayleigh scattering line; general, than the Stokes anti-Stokes line line strength. Raman scattering radius of typical quantum explanation. According to quantum theory point of view, the frequency of the incident monochromatic light can be seen as 0 is a zero energy photon. When the photons and matter are two possibilities when molecules collide, one is the elastic collision, the other a non-elastic collision. In the elastic collision process, there is no energy exchange, the photon only change the direction of motion, which is Rayleigh scattering; rather than elastic collision not only changed the direction of motion, and energy exchange, which is Raman scattering.

The laser pointer companies compete in the price of laser pointer

The laser pointer companies compete in the price of laser pointer .
1917 Einstein proposed stimulated emission, the laser has come out in 1960, separated by 43 years, why? The main reason is, ordinary light is produced by stimulated emission of particles in a very small probability. When the frequency of light launched into the work of certain substances, stimulated emission and stimulated absorption of two processes exist, the number of photons by stimulated emission of radiation to increase the number of stimulated photon absorption while filling decreases. Substances in thermal equilibrium, the particle distribution on each level, follow the equilibrium statistical distribution of particles under the law. By statistical distribution of the lower energy level E1 in the number of particles at the higher level must be greater than the number of particles of E2. This light passes through the working substance, the light energy will weaken not strengthen. To make stimulated emission dominate at high energy level E2 must be greater than the particles in the low-energy level E1 of the particles. This distribution coincides with the equilibrium distribution of particles when the opposite is called population inversion distribution, referred to as population inversion. How to technically achieve population inversion is a necessary condition for producing laser. The price war will make the price of laser pointer reduce. Theoretical studies have shown that any work material, under appropriate excitation conditions, in particular the level of the particle system to achieve population inversion between energy levels. If microscopic particles such as atoms or molecules with high energy and low energy level E2 E1, E2 and E1 energy level populations on the number density of N2 and N1, in the two-level transition between the existence of spontaneous emission, stimulated emission and stimulated transitions absorption transition, three processes. Transitions generated by stimulated emission of light by stimulated emission, and the incident light has the same frequency, phase, propagation direction and polarization direction. Therefore, a large number of particles in the same excitation of coherent radiation field produced by the stimulated emission light is coherent. Stimulated emission transition probability and stimulated absorption transition probabilities are proportional to the incident monochromatic radiation field energy density. When the two-level statistical weights are equal, the probability of the two processes are equal. In the case of thermal equilibrium N2 <N1, so spontaneous transitions dominate the absorption of light through the material is usually due to shock absorption and attenuation. Excitation energy can damage the outside thermal equilibrium leaving the N2> N1, this state is called population inversion. The price advantage of laser pointer is really important.

Insert laser pointer into the interface of the computer case

Insert laser pointer into the interface of the computer case.
In recent years, short-wavelength semiconductor laser technology, thin disc substrate technology, the lens material of high numerical aperture NA of the technology advances, so that the disc of high density recording density possible, while continuously variable digital image compression technology also a great improvement, so long continuously variable high-definition images included in a CD possible. On the basis of these techniques are laid, the world's ten largest companies together to develop a new generation of digital video disc DVD (digital video disk) standards, both in the same size and the original CD, the recording capacity of 7.5 times the original CD-ROM 4.7G, and high-quality MPEG2 digital signal compression method, so that it can store 135 minutes of film. Most of laser pointer are wrapped with plastic or metal.
DVD player mainly by the optical head and MPEG2 decoder composed of two key technologies, including MPEG2 decoder as a common standard, the current chip manufacturers to develop less than a dozen, while the optical head technology also mainly rests in the Japanese firms the hands. CD-ROM technology is a bunch of folding back the boundaries to be focused to the smallest laser beam to the disk, the disk as a record of information of the different light reflection bump, you can read the information on the disk. For the optical head is concerned, its unique technology can be: through the use of folding back the boundaries to be focused to the smallest laser beam through the transparent plastic layer 0.6mm, removed from the convex surface of the signal information. The remote control distance of laser pointer is no less than 15 meters.
Using the semiconductor laser diode, the use of numerical aperture NA of 0.6 rem in a lens, the wavelength of the laser beam is focused on the grounds off limits until the decision back to the minimum beam. CD-ROM disc shape of the different exchange errors and bring the focus lens position on the matter in the disc information recording surface of the position change, as well as CD-ROM disk rotation time up and down vibration can also cause changes in focus position, focus position changes in order to auto-correction , must be capable of an accuracy of ± 1μm of the focus position control error detection function and the servo control with built-in optical header. Stargazers can use green ray laser pointer to point at the stars at night.
The shape of the disc center and the rotation center of the disc between the eccentric correction, as well as the track pitch of 0.74μm for the track, control accuracy ± 0.1μm laser beam control for track-tracing function with error detection and control using The built-in optical servo header.

Most of laser pointer are wrapped with plastic or metal

 Most of laser pointer are wrapped with plastic or metal.
Series of emerging high-tech weaponry, who have advanced military technology, national security during the military struggle, will have greater and greater combat effectiveness of the initiative. Existence and development of military technology fundamental purpose is to combat and eliminate the impact on national security threats faced by a series of military, maintenance and protection of national security and interests. The latest developments in military technology will bring to the new national security threats. Modern technology, especially military reconnaissance satellites, remote sensing technology, satellites above the Earth over a thousand types of reconnaissance and communications satellites, the rest of the world was round, full-spectrum, full-time, full-dimensional surveillance and detection, the National Military sovereignty and border security threats facing the invisible invasion. laser pointer is normally varnished with superior oil paint.
Laser welding filler wire used, can greatly reduce the space requirements of the assembly. For example, thickness 2mm aluminum plate, if not using filler wire, sheet gap must be zero in order to obtain a good shape, such as the use φ1.6mm the wire as a filler metal, even if the gap to 1.0mm, but also to ensure that the weld good shape. In addition, the filler wire can also adjust the chemical composition or thick multi-layer welding.The composition of the laser head can be divided into two major parts, namely, ACT (torque control) section and the HS (base) part. ACT is the first implementation of laser components, real-time adjustment of the deviation between the objective lens and the disc is the core component of the laser head. It is divided into a fixed part of the movable part and fixed part of the main ACT frame, PCB, yoke, magnet, movable part of a lens, coil, four SPG (hanging line). The wilderness explorers can use laser pointer to guide themselves.
PCB board's function is flexible PCB cable to the feedback signal is passed to the hanging wire, so that the movable part of the ACT have focus and tracing exercise, find the disc channel. Magnet produces a magnetic field, so that energized coil in a magnetic field movement. Beam converging lens is matched with the CD-ROM information pits spot, DVD and VCD is a CD derived and developed laser digital video disc players, only through the objective lens to focus the laser transmitter LD information on the disc surface scan. In recent years, annual sales volume of China's growing trend VCD, laser head in the non-spherical lens all imported.
Laser power of negative feedback into real-time and non real-time negative feedback negative feedback two.

The customer can get more promotion if buying infrared laser pointer

The customer can get more promotion if buying infrared laser pointer .
Starting from the regulation of the endocrine, is to remove all stain of the professional products market for many years more women to solve the trouble spots, but also for establishing a good reputation and image, get more people to trust and esteem. Theoretical studies have shown that any work material, under appropriate excitation conditions, in particular the level of the particle system to achieve population inversion between energy levels. If microscopic particles such as atoms or molecules with high energy and low energy level E2 E1, E2 and E1 energy level populations on the number density of N2 and N1, in the two-level transition between the existence of spontaneous emission, stimulated emission and stimulated transitions absorption transition, three processes. Transitions generated by stimulated emission of light by stimulated emission, and the incident light has the same frequency, phase, propagation direction and polarization direction. Therefore, a large number of particles in the same excitation of coherent radiation field produced by the stimulated emission light is coherent. Stimulated emission transition probability and stimulated absorption transition probabilities are proportional to the incident monochromatic radiation field energy density. When the two-level statistical weights are equal, the probability of the two processes are equal.
In this case, the stimulated emission transition dominant. Light through a period of length l in the inversion state of the laser working substance, the light intensity increases eGl times. G is proportional to the (N2-N1) of the coefficient, called the gain factor, and its size is also working with the nature of the material and the laser light frequency. Period of active material is a laser amplifier. If, for some active substances on the two mirrors parallel to each other (at least one of which is part of the transmission's) constitute the optical resonator (Figure 1), at high energy particles will produce a variety of directions of the spontaneous emission. Among them, the non-axial propagation of light waves outside the cavity escapes soon: axial propagation of light waves able to spread in the cavity round-trip, when it spread in the laser material, the light intensity is growing. If the resonant cavity G0l small-signal gain is greater than one-way one-way loss δ, can generate self-excited oscillation. The freeing shipping can be supplied for the large quantity order of laser pointer .
State of motion of atoms can be divided into different levels, from high energy level when the atomic transition to the low level, it will release the corresponding photon energy . Similarly, when a photon incident on a level system, and work to absorb it, will lead from the low-level atomic transition to the high energy level. These movements are not isolated, but often simultaneously.

laser pointer has different output types

 The rubber is also very common to be the body material of laser pointer .
Laser welding usually requires a certain issue from one focus of the laser power density at the center spot is too high, to evaporate into the hole. Leave the laser focus of the plane, the power density distribution is relatively uniform. Defocus in two ways: positive and negative defocus defocus. Focal plane at the top of the workpiece is out of focus, and vice versa for negative defocus. Geometrical optics theory, when the issue from an equal positive and negative, corresponding to approximately the same power density on the plane, but in fact obtained pool of different shapes. Negative defocus, the availability of greater penetration, which is the formation of the pool. laser pointer has different output types.
Experiments show that the laser heating 50 ~ 200us material begins to melt, the formation of liquid metal and the emergence of sub-vaporization asked to form a city-pressure steam, and high speed jet, a dazzling white light. At the same time, high concentrations of vapor to liquid metal movement to the pool edge, the formation of sag in the center pool. When the negative defocus, the material internal surface area is higher power density, easy to form a stronger melting, vaporization, so that light passes to the deeper material. So in practice, when required penetration depth is large, the use of negative defocus; welding thin materials, it is appropriate is out of focus. Including welding, side welding, fusion welding center through the center hole 4 kinds of fusion welding process method. Including wire and wire welding, cross welding, lap welding parallel, T-4 kinds of welding process method. This kind of laser pointer has the function of turning over the page.
Laser welding can be successfully used to achieve wire connection with lumped elements, block elements can be any size. Should be noted that in welding filamentous component geometry. Different types of metal welded to solve weldability and solderability parameter range. Laser welding between different materials, only certain combinations of materials possible. Some components of the connection should not be used laser welding, but can use the laser as a heat source, the implementation of soldering and brazing, laser welding also has the advantage. Brazing using a variety of ways in which the laser is mainly used for soldering printed circuit board soldering, especially useful in chip component assembly. Some laser pointer have the function of black screen.
Laser soldering compared with other methods has the following advantages: because it is local heating element is not easy to produce thermal damage and heat affected zone is small, it can be implemented in the vicinity of the thermal component soldering.

The carton package of laser pointer can protect laser pointer well

The product feature will introduce some parameters of laser pointer .
Found to affect the welding quality of the other claims of the reasons for the changes due to further improve the reliability of welding quality. At room temperature or under special conditions, welding, welding equipment installation simple. For example, the laser through the electromagnetic field, the beam does not shift; laser in a vacuum, air and a gas welding environment can, and can be glass or transparent material of the beam welding. The chip of this kind of laser pointer has the long lifetime.
Today, lasers have been widely used in solar cell production, such as pulsed Nd: YAG laser or a Nd: YVO4 laser for solar cell edge isolation. In solar cell production, through the silicon laser drilling, laser cutting, laser scribing to achieve electrical connection back, these methods was also considered feasible laser treatment. To implement this method, you need to use a high peak power and good beam quality of pulsed lasers. The carton package of laser pointer can protect laser pointer well.
Although the high-power semiconductor lasers can not achieve these parameters, but using a millimeter-focus compact continuous light source, high-power semiconductor lasers still has its advantages. The following description will focus on solar cell production in the field of laser applications, describes how it is implemented welding, recrystallization or drying function. All these applications have their thing in common - a few square millimeters in area could reach the target within the thermal value. In the production of PV modules, a single solar cells connected with each other through the solder electrical connections. Solder, the solder must reach a certain degree with the same time good electrical conductivity. The carton of laser pointer should be a little larger than laser pointer .
Heat input and its uncertain application of mechanical stress generated during the industry rarely used Kolben welding, but also tend to use induction brazing, hot air welding or brazing and other micro-flame soldering methods. For solar cells thinner (<200μm), in its production process, inexpensive silicon solar cell wafer handling its demands for higher and higher, should be reduced as much as possible in the treated Cheng Zhongjing round scrap rate and thermal stress. High-power semiconductor lasers for welding has many advantages, but these advantages for solar cell electrical connection is essential. This is a non-contact method is through space and time on the definition of heat input and to ensure that the solar cell itself to achieve the minimum thermal stress.

Remote control laser pointer locates the target more accurately

Remote control laser pointer locates the target more accurately and flexibly.
Every advantage of cutting the energy input per unit length is small, can reduce the thermal load, suppress crack generation and expansion. However, this method had been made clear that the occasion is a sacrifice of time and efficiency of the cutting processing method, this method need to cut alumina ceramic 8.5mm 60 or 100 laser scanning repeated "passes". It was found that laser scanning each channel slag produced is difficult to remove, often due to severe blockage and the accumulation of residual kerf resulting thermal effect hoga. Therefore, this method also applies to the vaporization mechanism-based ceramics. Use of CO2 laser and Q-nanosecond pulse width crack suppression, cutting to the gasification of multi-channel non-destructive way of cutting Si3N4 ceramic studies, micro-crack size can be controlled in the range of grain size.
Because people in ceramics research precipitation has accumulated a wealth of experience, the application of laser technology in the study of metallic materials is also quite mature. So for the hard-brittle non-metallic materials, ceramic laser processing, multi-disciplinary range of researchers from a large number of proposed methods to try, four categories of existing methods is only a brief summary of the representative process. Relative to the metal, ceramic and have a hard and brittle non-metallic material of high thermal conductivity and poor general characteristics, there are also significant differences in personality, even if the same formula, the same batch of raw materials will be due to differences in micro sintering structural differences, such differences are often cut for non-destructive can not be ignored. Practice, researchers often depends on the specific circumstances of processing materials for process adjustments and improvements, as well as innovation of materials required for the pre-processing before the details, such as infiltration, adhesion bonding film stress release will help, too can not be ignored. The RF emitter of remote control laser pointer is embedded with a wireless RF emitter.Qualitative description of a 1.5 mm thick in the glass on three different cut marks the difference between the dynamic. Glass cutting edge clean and free of splinters and cracks, no follow-up treatment processes. Because non-contact laser tool, no tool wear problems in order to ensure continuous, uniform thickness and cutting edge quality. For comparison, 3 (b) shows the use of metal wheels for cutting edge, you can see remnants along the cutting line tension of the existence of various ingredients.

This means that the end of the junction area the conduction

 This means that the end of the junction area the conduction band on the energy levels of electrons occupying the chance is greater than the valence band to the next level of the electrons occupy chance (5-5) and (5-6) into the condition and simplifying to get.
Longer .6328 ? m He-Ne laser, although the dielectric film mirror with high reflectivity .6328 ? m wavelength of light, it will still produce a strong 3.39 ? m wavelength amplified spontaneous radiation or laser, the upper level which will allow the number of particles decreased, resulting in lower laser power of 0.6328 ? m. Strong .6328 ? m laser output requires the use of the dispersion method, inhibition of 3.39 ? m radiation absorption method or an external magnetic field method. Output power characteristics. He-Ne laser discharge current on the output power has a great influence. Figure (5-11) is the experimentally measured output power and discharge current curve. This Laser Pointer is the good tool and assistant for the customer.
It can be seen, each inflatable total pressure has a maximum output power of the discharge current with the gas mixture and total pressure. In the best inflatable conditions, the maximum output power of the discharge current is called the optimal discharge current. Can be seen from the diagram, near the optimum discharge current, the output power because of the discharge current changes caused little change. Therefore, when in actual use, the best discharge current is not very strict, which is very conducive to the adjustment of the working state. Curve of output power with discharge current. He-Ne laser is filled with He gas and Ne gas mixing ratio and total pressure has a great influence on the output power. Lasing in the Ne atom ratio is too small to make the output power is reduced. It is the perfect design of Laser Pointer .
He's lower ionization potential, the ratio is too large will increase the ionization of too much leaving the number of electron ion, the lower the electric field will be able to maintain a certain discharge current, low electric field causes the electron temperature decreased to reduce the excitation rate, output power decreases. The experiment proved that the He-Ne laser with the best mixing ratio and the best inflatable pressure, that is, there is the best inflatable conditions. The optimal conditions must be considered in the manufacture of a He-Ne laser. If the discharge capillary diameter d, gas pressure is p, then there exists a maximum power output of the best pd value. He-Ne laser pd value of about (4.8 ? 5.3) × 102 Pa ? mm. The reason for this phenomenon is: on the one hand the pressure decline in the electronic and atomic collisions reduce. It is the brilliant technology of Laser Pointer . 
The same time, these features so that it can under certain special conditions of measurement has many advantages compared to conventional detection techniques, is a leading direction of the development of sensor technology. As a light source of one of the key optical components in fiber optic sensor, its stability has a direct impact on the accuracy of the optical fiber sensor.

It is during the actual production of green laser pointer

 It is during the actual production of green laser pointer .
This theory is that the atomic composition of the material, a different number of particles (electrons) are distributed in the different energy levels of particles in the high energy level by a photon excitation, jump from high energy level (transition) to the low energy level, then will radiate excitation light of the light of the same nature in a particular state, a low light to stimulate the phenomenon of a light. This is called by the stimulated emission of light amplification, referred to as laser. Laser there are four main features: laser high brightness, high directionality, high monochromaticity and coherence. The high brightness of the laser: the brightness of solid-state lasers can be as high 1011W/cm2Sr. Not only that, with high-intensity laser beam focused by a lens. Repair of green laser pointer has been finished.
Thousands and even million-degree heat near the focus can be processed, which makes it possible to almost all materials. The high directivity of the laser: laser-directional so that it can effectively pass a longer distance at the same time, but also to ensure that focus the high power density, these two points are important laser processing conditions. High monochromaticity of the laser: high monochromaticity of the laser in order to ensure the beam can be precisely focused to focus a high power density. Laser coherence: coherence describes the phase relationship of the various parts of the light wave. Singular characteristic is the laser described above has been widely used in industrial processing. The result of the meeting of green laser pointer has been recorded.Penetration of blue-green sea water up to 600m above its propagation direction, and not to be intercepted by the enemy, and covert security, will greatly improve the Navy of its viability. Laser .The experiments show that 1kpa-100kpa back pressure, the solid propellant combustion by 5w-30w laser machine control, combustion can arbitrarily suspend and restart, thrust can be adjusted, thus greatly improve the performance of the propulsion system, there is great potential for development. Laser-guided. The guidance refers to the control and guidance of aircraft, in accordance with the selected reference flight path movement. The guidance system used in the military field satellite-guided, inertial guidance, terrain matching guidance and laser-guided. As one of the main guidance system, laser-guided a laser guided substances as the transmission of information to rely on the seeker, and automatically track the laser target shooting at the target reflected laser beam. It is the meeting of the technical detail of green laser pointer .

The customer bought several laser pointer

The customer bought several laser pointer .
Here only some of the more important and typical applications are described. 
In order to enable the particles to achieve such a large kinetic energy, their temperature rises to hundreds of millions of degrees Celsius, so call this fusion reaction of thermonuclear reaction. Needed to ignite the thermonuclear reaction temperature, called "ignition temperature". Even the minimum conditions of deuterium - tritium (DT) fusion reaction also about 100 million ° C. The particle average kinetic energy of 10keV or more, far more than the ionization energy of hydrogen ions 13.6eV. Therefore, the fusion reaction substances plasma ions and electrons mixed together to form the desired temperature when the fusion is also called the plasma temperature. In order to achieve such a high temperature to generate high temperature and high-density plasma, the initial use of nuclear fission chain reaction. The manager is satisfied with the popularity of laser pointer .
The first practical application of the thermonuclear reaction of hydrogen bombs. But as a weapons of mass destruction, the hydrogen bomb explosion in the process of thermonuclear reaction actually can not control. To take advantage of the thermonuclear reaction do energy must be able to effectively control it. Magnetic constraints and inertial confinement of the controlling party after the ignition of the thermonuclear reaction can proceed smoothly, "burning" go nuclear fuel must maintain a certain density, or nuclear fuel is too sparse will be greatly reduced, or even turn off the fusion reaction rate. In addition, this density of nuclear fuel must also maintain a certain time, so they are not each other flying in order to fully carry out the fusion reaction. The popularity of laser pointer has attracted many customers.
However, in the hundreds of millions of degrees Celsius temperature, the nuclear fuel due to the super-heated to high temperatures and rapid expansion, the results of its density quickly lower. Fusion energy extraction took advantage of two conditions: First, to ensure adequate response time; two constraints of high temperature plasma. However, the retention time of the plasma and is inversely proportional to the plasma density, which means that the first condition to obtain fusion energy exceeds a critical value. This is the so-called Lawson conditions.

When the customer just wants to use the star Laser Pointer

When the customer just wants to use the star Laser Pointer . 
Ordinary light is always divergence in all directions, as is necessary for the lighting. But to this light focused to a point, the vast majority of energy will be wasted, the efficiency is very low. The semiconductor laser light emitted vast majority are concentrated, it is easily launched into the fiber end. A long time, people light a variety of studies. Light in the end what is it? This problem has troubled many intelligent people in. The ancient Greek philosophers alone high-speed movement of the particle flow. All luminous objects like the sun, can issue such a stream of particles. When these tiny particles flow come into contact with the eyes, it caused people light feeling. During use of laser pointer , the customer should pay some attention to the maintenance of the laser pointer.
For the study of light after long years of no progress until the great Isaac Newton, only to create an optical study of the new century. Newton in his studio, with a prism, white light is decomposed into seven kinds of colored light from red to purple. This is the secret of human the first time I saw the light. White is not a single, but several different shade of composite. Further research so that Newton made his famous light particles: the light is made of high-speed motion of tiny particles; different shade of different particles, including the quality of the purple particles, the minimum quality of red particles. In this doctrine Newton to explain light refraction, reflection and the above-described dispersion phenomena. When using laser pointer , the customer should operate in the correct and suitable procedure.
Corpuscular theory in line with people's daily visual mental requirements. Just a straight line the road, it's easy to believe that just the stream of particles. Newton's immense popularity, the particles that moment to play the leading role. But also of Newton's contemporaries among vigorously refuted the corpuscular theory, the Dutch Huygens (1629 - 1695) in 1678 proposed the wave theory to explain the nature of light. He believes that the light particle theory can not explain the light cross through each other and independently of each other, but it is the basic nature of the wave. The wave theory of light is also very easy to explain the reflection and refraction phenomena of light. So in the end just wave or particle it? Here will introduce a special type of green star laser pointer with keychain.
The early nineteenth century and found that the optical interference, diffraction and polarization phenomena, such behavior is only suitable to explain the wave theory of light.

Laser Pointer has several payment terms

Laser Pointer has several payment terms.
Cleaning blade: Clean knife blade and the composition of the powder is very similar, but with a slightly harder bit of polyurethane rubber, of course, its function is not the same knife with a powder, clean the rubber blade and the blade is very important to the state, for a long time After the deformation of the rubber will be using the emulsion, often a gap edge, so that the cleaning blade can not be used again, will have a print product on the local end of the light-colored gray or black vertical lines. Charge roller: roller charging the surface layer often due to prolonged use of adhesive toner, and paper and other toner additives, but also wear and tear, these phenomena can cause the bottom ash or black spots and other print materials, filling toner before use vacuumed or gently wipe with a soft cloth, be sure to clean the surface as much as possible. Background scattering: refers to the text or unwanted lines around the black specks, toner from the magnetic roller coating or bad cause. Drum overheating (referring to a sense of high) may also cause this defect. Wave background (tiger grouper): wavy black version in white or white on black version or in the form of half-tone version. Several more kinds of payment method of Laser Pointer will be added for this online store of Laser Pointer .
Usually magnetic roller sleeve coating defects or due to prolonged low-density printing, magnetic bond caused by the magnetic roller sleeve. Hollow words: refers to the text or images is missing strokes on the reasons: toner itself is the problem. Dark pink with bad. Magnetic roller coating problems. Print media over the surface of the light, perfect. Paper with the negative. Irregular vertical black spots: the deformation caused by the sealing of the waste toner smears scattered. As the accumulation of too much toner on the magnetic roller, causing leakage of powder. Coloration: with a variety of factors: the toner itself is the problem. Toner, magnetic roller with the problem. Flour knife aging. Magnetic roller wear. Drums to life. High humidity or moisture absorption media. The detailed information of Laser Pointer contains the ordering quantity of Laser Pointer .
Bottom ash: bottom ash refers to prints blank zone in the mist toner, but also with a variety of factors: aging scraper. Charge roller fouling. Toner problem. Drum fatigue, to life. Low temperature and dry environment. Print media bad. Charge roller wear. Fixing is not strong: refers to the printed text or images on the product that is out of touch. The reasons are: toner softening point higher than the machine's fusing temperature. Print media too thick or too light surface. Before cleaning the printer, be sure to carefully read the printer user manual to follow any special procedures and warnings. Therefore, a large number of particles in the same excitation of coherent radiation field produced by the stimulated emission light is coherent.

The customer wants to know the maximum output of Laser Pointer

The customer wants to know the maximum output of Laser Pointer .
As laser technology and computer technologies, the user can be as long as the computer programming, laser printing output, and can change at any time print design, a fundamental alternative to the traditional mold making process, in order to shorten the product upgrade cycle, and provide flexible production a convenient tool. Very fine laser beam can act on the surface, most thin line width can reach 0.05mm. To increase the precision processing and security features to create a broad application space. Laser marking can meet in small plastic parts produced on the need for large amounts of data. For example, can be printed requires more accurate, higher-resolution two-dimensional bar code, marking and stamping or injection compared to a stronger market competitiveness. The maximum output is one of the most important parameters for Laser Pointer .
Non-contact laser marking marking, unlike the life of the template marking process has limitations, in the batch processing of very low maintenance costs. Non-contact laser marking marking, save energy, relative to the etching method, to avoid chemical contamination; relative to mechanical marking, can also reduce noise pollution. Laser engraving generally refers to the non-metallic materials for carving or cutting the top. Laser engraving can be divided in different ways by engraving engraving and vector cutting lattice: Lattice carving sculpture resembles a high-resolution dot matrix dot matrix printing. Laser head from side to side, each carving out a series of points of a line, then the laser head moves up and down while carving out a number of lines, the last full-page image or text form. The maximum output of Laser Pointer should be recorded in the report.
Scan graphics, text and vector graphics can be used dot matrix engraving. Vector cutting and raster engraving, vector cutting is in the graphic to the outer contour. One engraving machine performance, mainly by engraving speed, engraving, and spot size and intensity of the decision. Engraving speed laser engraving speed refers to the speed of head movement, usually with IPS (inches / sec) that bring high-speed production efficiency. Speed is also used to control the cutting depth, for a given laser intensity, the slower the speed, depth of cutting or carving the greater. The package of Laser Pointer should be firm enough.