2017104(水)

New Applications of Laser Cutting

Compared with the traditional process of spot welding technology, laser welding can be customized weld form, optimize the weld after welding strength, increased design and process flexibility, can be applied to any welding form, any welding direction. At the same time can be customized according to process requirements weld distribution, making the welding force of the optimization can be a perfect realization. Laser welding soldering without contact, flexible weld requirements, can make the welding overlap surface smaller. The use of green astronomy laser外部リンク welding can reduce the cost of materials to a certain extent and reduce the weight of the body, to ensure the quality of the body on the basis of the maximum to achieve light weight, but also to achieve the purpose of energy conservation.

The challenges of laser welding copper are related to two major physical properties of materials: low absorption rates for most high-power industrial lasers, and high thermal conductivity during processing. We know that the copper absorption rate increases with the decrease of the wavelength, which means that the laser visible band (for example, 532nm wavelength green laser welding for copper) will have a significant advantage, but for the majority of the welding power range required for the application of these burning laser外部リンク are not available or been industrial verification.

Laser cutting is a process revolution of sheet metal processing, and it is a machining center in sheet metal processing". Laser cutting has a high degree of flexibility, cutting speed, high production efficiency, short product cycle, and has won a wide market for customers. Laser cutting and no cutting force, no deformation; no tool wear material, good adaptability; whether it is simple or complex parts, can be cut with a precision of laser rapid forming; the narrow kerf, good cutting quality, high degree of automation, simple operation, low labor intensity, no pollution; can realize automatic cutting like, nesting, improve material utilization, low production cost, good economic benefit.

Another application that utilizes UV lasers for small beam size and low stress properties is drilling, including through holes, micropores and blind burrs. The UV green laser light外部リンク system drills through the substrate by focusing the vertical beam straight through the substrate. Depending on the material used, holes as small as 10 μm can be drilled. Ultraviolet lasers are particularly useful for multi-layer drilling. Multilayer PCBs are made of hot press using composite materials. These so-called "semi-cured" will be separated, especially after the use of higher temperature laser processing.

In 2016 the domestic laser processing equipment sales reached 25 billion yuan, according to research projections, in 2020 the laser processing market space will reach 50 billion yuan. In the domestic market, in 2015 the laser marking, cutting, welding of the three main applications accounted for 68% of sales, compared to 2005, the proportion of laser marking equipment sales there has been a significant decline from 65% to 24%, the application of new applications of red laser外部リンク cutting and welding equipment sales increased significantly from 28% to 44%, because the transformation and upgrading of manufacturing to increase the demand for emerging laser processing equipment.



2017619(月)

Application of Laser Technology


Laser TV is not only have their own table, in the content and the current smart TV no difference. Because the use of laser TV is the TV system, and even many TV brands are also launched laser TV. Their LCD TV and laser TV use the system is similar to the same resources to provide. So use the 2000mw laser pointer外部リンク TV without worrying about no content. With the gradual enrichment of network resources, laser TV online can see a lot of high-definition content, the latest TV series, movies and entertainment programs can use the laser TV to watch. Past the projector needs a separate device, connect the player or a variety of boxes can see a large, this way OUT out. Laser TV is to see to see, do not worry about no see.

First, not the same place is the light source, laser light source life is very long, easily tens of thousands of hours to laser TV life comparable to LCD TV. Can be said that a laser TV use a three or five years is not a problem, no longer worry about the problem of light, this life cycle has been enough, after all, not all families have to use a TV for 10 years 20 years. Second, the laser TV is a reflection of the ultra-short focus of the technology of the projector, this ultra-short focal length 3000mw laser pointer外部リンク TV can be achieved within 0.5 meters distance of 100 inches of the screen. In other words, laser TV can be placed in the TV cabinet on the projection of 100 inches, in the past the projector hoisting in the middle of the living room situation gone.

But laser weapons have advantages and disadvantages. For example, in the rain or dust weather, its combat effectiveness will be greatly reduced. The development of laser weapons in the United States, mainly facing the choice of high-energy laser weapons twists and turns, a variety of key technologies have yet to be overcome, research and development costs overdraft progress delay, laser weapons to be miniaturization and other issues, the existence of these problems is also greatly limited The development of burning laser pointer外部リンク weapons has become a major obstacle to the installation of laser weapons.

Laser TV is able to achieve 100-inch screen, but the screen brightness enough? Brightness is not enough, the screen size is large, but the display is difficult to guarantee. So the brightness is not high, is a laser TV challenge a foundation of LCD. Now the laser TV brightness is basically 3000 lumens. But the rapid development of high power laser pointer外部リンク light technology is expected in the second half of the release of new products, many began to configure a 4000 or even 5000 lumens of brightness. This brightness and then with the anti-light curtain, even if the lights to watch, the effect is also very to force. Laser TV brightness breakthrough so that this product no longer appear during the day can not be used at night must be dark paint to show the situation. So the brightness of the breakthrough is always a main line of laser TV, it is gratifying that the current laser light source brightness breakthrough faster. It is clear that the development of laser TV is not subject to brightness and stagnation.

In fact, laser weapons are a directional energy weapon. According to different combat purposes, can be divided into tactical laser weapons and strategic laser weapons two categories. Which tactical laser weapons is the use of 5000mw laser pointer外部リンク as energy, as conventional weapons, as the enemy directly to the enemy, tank aircraft, such as killing damage, combat distance of 20km or so. The strategic laser weapons is more like a "big kill device", can attack thousands of miles away from the intercontinental missiles, but also attack the reconnaissance satellites in space and communications satellites. It can be said that high-base high-energy laser weapons is an ideal weapon to seize the advantages of space, so the world's major military powers are spending money to research and development.



2017524(水)

New Detection Technology


Compared with microwave radars, which have the same application in the car, the laser radar working in the optical band has a higher distance resolution, angular resolution and speed resolution than the microwave level of 2-3 orders of magnitude. Therefore, the lidar in the measurement process can bring distance, angle, reflection intensity, speed and other richer information, with these data can generate multi-dimensional target images, to help us or the system has a more detailed awareness of the target.

In addition, due to the short laser wavelength, can launch a very small divergence angle (μ rad order) of the blue laser pointer外部リンク beam, multi-path effect is small, that is not formed directional emissions, and microwave or millimeter wave generated multipath effects, anti- To achieve low altitude, low altitude target detection. The laser active detection has a characteristic that does not depend on the external lighting conditions or the radiation of the target itself. It is only necessary to obtain the target information by detecting the echo signal of the laser beam emitted by itself, so that all-weather work can be realized. However, the laser radar is susceptible to atmospheric conditions and the dust of the working environment, to achieve the all-weather working environment in the present terms or the most difficult thing.

In fact, the premise of laser radar technology is 3000mw laser pointer外部リンク ranging technology. We can usually see the distance measurement method, from the categories can be divided into: laser time-of-flight method and triangular method. In simple terms, they are suitable for long distance ranging and short distance ranging. The TOF method can be divided into: pulse modulation (pulse ranging technology), the use of the target to the optical signal diffuse to measure distance; phase modulation, the intensity of the laser continuous wave modulation, by the phase difference to measure the distance information The The choice of LIDAR for different methods depends largely on its type and practical application.

Lidder is also divided into many categories. Starting from the modulation, there are mainly direct detection of lidar and coherent detection of lidar. Commonly used, including autopilot, robot, mapping used, is basically a direct probe lidar. More special, such as wind, speed and the like radar, the general use of coherent modulation. If you start from the application, that classification is more, such as laser range finder, 5000mw laser pointer外部リンク three-dimensional imaging radar, laser radar, laser detection radar and so on. Among them, the laser three-dimensional imaging radar contains our well-known laser mapping, as well as automatic driving in the single-line laser radar and multi-line laser radar.

In the current automatic driving, there are single-line laser radar and multi-line laser radar points. Due to the high sampling frequency required in the application, triangulation and pulse ranging are used in close and long distance measurements, respectively. Among them, the single-line laser radar mainly through a high frequency pulse burning laser pointer外部リンク range finder, plus a one-dimensional rotation scan to achieve the measurement. And its angular resolution can be higher than the multi-line laser radar, so pedestrian detection, obstacle detection (small target detection) and the front of the obstacle detection and so on, than the multi-line laser radar has more advantages. Multi-line program is also mainly for multi-channel single-line collection, which is also subject to volume and optical path restrictions.

First of all, the laser radar is used in infrared laser, this laser itself in the infrared band radiation is much lower than the visible light. Furthermore, the application will use a very narrow filter, directly to the strong background light filter, and then use infrared light to detect. So that we can get a high-quality lane line image, through the image of the gray, you can easily detect the lane line. In general, with a 20000mw laser pointer外部リンク radar to do lane line detection, performance will be better than the camera.



201753(水)

The Thulium Fiber Laser

The Thulium Fiber Laser

The stronger the laser energy, the stronger the irritation of the skin, the greater the degree of damage, the better the effect. As the Asians are more sensitive to light, laser exposure to high energy is also high risk, reasonable to set the laser energy size, the density of irradiation points is very important. After erbium laser irradiation treatment, because of the healing mechanism of human skin trauma, these target tissues as a repair center, epidermal new healing, dermal fiber thickening, skin comprehensive improvement. The current 1550 nm erbium 1000mw laser pointer外部リンク for rejuvenation (facial skin rough, thick pores, aging wrinkles), repair acne dents, repair scars (surgical scars, caesarean section scar, burn scar), stretch marks repair A very good effect. In addition, erbium laser can also be used for chloasma and seborrheic alopecia treatment.

The wavelength of the thulium laser is at the peak of the water absorption energy, and the closer the laser wavelength is from the peak of the energy absorption, the faster the energy absorption is. The more shallow the penetration is (0.2 mm), the irradiated tissue is rapidly vaporized and the thermal damage is minimal The As the heat damage of thulium laser tissue is small, the scab (shallow tissue block formed by living tissue shedding) is shallow, and the recovery time after operation is shortened, and it is easy to obtain pathological analysis. At the same time, the thulium fiber 3000mw laser pointer外部リンク with good beam quality, cutting better, positioning cutting the target plane more accurate, because the heat damage and small scab, so that the field is clear, for cutting / enucleation effect is very good.

A typical CO2 laser consists of a large amount of gas discharge from a mixed CO2 molecule. Due to the very close to the energy level of molecular vibrations and rotations, the photons emitted between these energy levels have low energy and long wavelengths compared to visible and near infrared (NIR) light. Carbon dioxide lasers offer power levels from milliwatts to tens of kilowatts, ranging from small instruments to high power cutting. And because the CO2 laser has a very high spectral purity, with <1kHz radiation width and no power trade-off, conversion efficiency of up to 10%. These features enable CO2 laser to address emerging applications such as material processing, photodetection and ranging (lidar), thermal visual aids, and targeted therapeutic medical applications.

The carbon dioxide burning laser外部リンク is a reasonable way to adjust the optical device because its output beam is highly absorbed by the LIGO optics and it can provide high wavelength purity and power stability without increasing the noise to the measurement. However, according to LIGO specific specific application requirements, the development of single-wavelength stable CO2 laser, suitable for real-time adaptive system is very precise control loop, accurate offset optical distortion. When the optical element is insufficiently compensated for thermal deformation, the CO2 laser beam is shaped as a ring to provide additional compensation (overtemperature correction), and if the optical element is over-compensated, the CO2 laser beam is shaped as a disk in the center of the optical element Compensation (under thermal correction).

While CO2 lasers can solve all the industrial needs of the era is coming to an end, we are facing new materials and increasingly demanding industrial processes brought about by the challenges that require a deeper understanding of the true value proposition of the high power laser pointer外部リンク, as well as the manufacture and sale of carbon dioxide lasers The different methods. In terms of manufacturing, this new paradigm closely matches the specific customer requirements using CO2 laser wide range specifications. In terms of marketing, from the original way of the average power pricing to customer-specific program pricing, such as pulse shaping, peak power, wavelength characteristics and operational stability to match the special materials and application requirements.

Laser light source also showed a rising trend, in fact, in the projector industry, this year's laser light source exposure is high, but because of the relationship with ordinary consumers, so the list of the rising trend of laser light is not obvious. In fact, the laser light source in the engineering market has a very good development, the current laser projection brand more than 20, more than 300 products, of which more than half of the project laser projection. This is the 2017 5000mw laser pointer外部リンク light source products outbreak of the most concentrated market, in addition to the field of laser TV, the number of new products is also a lot, so 2017 home laser products will continue to rise.



2017311(土)

Laser Cutting Machine Processing

Laser Cutting Machine Processing

Laser cutting machine is a high-tech intelligent equipment which integrates numerical control technology, laser cutting technology and inverter power supply technology. The development of laser cutting technology is based on the common progress of computer control, burning laser pen外部リンク optics and power electronics. PIC system, belonging to the older board control system, can be integrated into the ordinary computer to run, the use of background software to control the analog signal transmission, the control system, although old, but are fully open system.
<img src="http://www.everyonetobuy.com/images/STARA-25.jpg" alt="laser pointer" width="500" />外部リンク
Laser cutting machine processing as an advanced means of material cutting, has been more and more accepted by sheet metal producers. With the computer control technology and optical technology continues to progress, people for their processing capacity expectations are getting higher and higher, this expectation is not only able to cut, but also cut well and cut fast expectations. Metal laser cutting machine is a solid fiber module as a source of excitation of the metal laser output of high energy density of the laser beam, and focus on the workpiece surface, so that the workpiece area by the spot light instantaneous melting and gasification, through the computer control CNC machine The system moves the spot position to achieve automatic cutting. It is a set of 3000mw laser pointer外部リンク technology, numerical control technology, precision machinery technology in one of the high-tech equipment. And can give the answer, of course, can not be separated from the performance of processing machines, while the quality of processed materials also directly affect the effectiveness of the answer.
In general, the shorter the pulse width, it is difficult to obtain high average power, therefore, from this point of view, the short pulse is at the expense of the average power at the expense. In addition, the narrower the pulse width, the greater the spectral width, therefore, the color difference will also affect the processing effect. Followed by the effect of wavelength, for the general material, the wavelength of the etching effect is not significant, only in the transparent material (such as SiO2) when the processing is considered, and should consider the wavelength problem. As mentioned earlier, transparent materials have a strong absorption of ultraviolet light, and for visible and infrared light transmission rate is very high. So it is usually the ultra-fast laser triple frequency light for processing. For tens of femtosecond lasers, the spectral width of 20nm, or even 50nm, so the third frequency efficiency is very low. While the picosecond laser can get a higher triple frequency output.
For a set of laser fine processing system, in addition to the laser, the entire system platform to build, software control is also an important issue. Any one of the shortcomings, are sufficient to affect the performance of the entire system. Laser processing is the use of light energy through the lens after focusing on the focus to achieve a high energy density, by the photothermal effect to the processing. Laser processing does not require tools, processing speed, surface deformation is small, can process a variety of materials. Use a high powered laser pointer外部リンク beam to perform various materials such as punching, cutting, scribing, welding, heat treatment, etc. Some substances with metastable energy levels absorb light energy at the excitation of extraneous photons so that the number of atoms at high energy level is greater than the number of atoms in the low energy level - the number of particles is reversed, and if there is a beam of light, Energy is equal to the two can be the corresponding difference, then it will produce stimulated radiation, the output of a lot of light energy.
Compared with the CO2 laser, the processing time of the fiber laser is significantly shorter when the power is the same, the processing material and the thickness are the same. In addition, the power consumption of fiber lasers is significantly lower than that of CO2 5000mw green laser外部リンク. Typically, the efficiency of fiber lasers is greater than 35% (YLS-ECO series lasers are close to 50% efficiency), far greater than CO2 lasers. Easy to use and low maintenance, fiber lasers are ideal for metal cutting solutions.
Through the built-in lidar, send and receive back and forth the laser line, but also inxx navigation within the sweeping robot to accurately locate their own and furniture environment, automatically create a whole house 2D map, lay the foundation for full coverage clean, and through the calculation of Luban calculation, In the establishment of a good map, the initiative 1000mw green laser外部リンク will be greater than 45 square meters of the region to divide, and clean each area, will insist on bow-type straight line to ensure that the cleaning without missing, consumers do not have to worry about where there is no sweep. In recent years, the frequency of sweeping machines has increased, but most of them have been deliberately avoided by the navigation function of sweeping machines. The reason is that the cost of sweeping machines is increased, but the navigation function of the sweepers has become a necessity Demand, within the sweeping machine with its powerful navigation function, in the future market within the sweeping machine prospects are very impressive.
http://eyes123456.allmyblog.com/16-laser-industry-pattern.html

http://laserman123.bravesites.com/entries/general/q-switched-fiber-laser-pulse

http://www.notre-blog.com/Eyes123456/369785-nouveau-message.aspx



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