For laser lens types and differences and lens design

by:Crylight     2021-05-25

1. Laser focusing lens. There are two types of domestic and imported ones. The transmittance of domestic focusing mirrors is between 90%-95%. They are generally used for laser tubes with a length of 1250mm or less. The domestic focusing mirrors have many impurities and absorb heat. If used for those above 80w The laser tube reduces the cutting efficiency and easily breaks down the lens. The imported focusing lens has a transmittance above 99%, and is generally used for laser tubes below 150w. It has less impurities, high transmittance, and fine spot. It is generally the first choice.

  The thickness of the conventional domestic and imported focusing lens is generally 2mm. If it is used for the laser tube above 150w, it is recommended to use the thickness of 3mm, so that the thermal lens effect is reduced and the use is more stable. The laser tube with a 300-lens design w uses a focusing lens with a diameter of 25mm or more and a thickness of 3mm or more.

  2, laser mirror. There are molybdenum material, silicon gold-plated material and dielectric film. The molybdenum material has no coating and is used in a dirty environment. It is scratch-resistant and has a long service life, but the reflectivity is about 80% and the loss is relatively large. The silicon gold plating uses coating technology, the reflectivity is above 98%, the loss is low, the reflectivity is high, it is suitable for places with a cleaner environment, and its life is shorter than that of molybdenum. Dielectric film mirror.

   is generally used on high-power mixed cutting machines, with a reflectivity of over 99% and very high reflectivity, suitable for thin metal cutting machines and high-power laser machines. The use of dielectric black film technology makes the production of laser lenses difficult, and there are few such production technologies in China. The life span is similar to that of silicon gold plating.

The classification of    filters Before choosing a filter, you must have a basic understanding of the classification of filters. Filter products are mainly classified according to the spectrum band, material, film material, optical characteristics, application, etc.


   prism is a kind of transparent surrounded by planes that intersect but are not parallel to each other Polyhedron, used to split light to change the path of light or disperse the light beam. It is made of transparent materials such as glass, crystal, etc. In optical instruments, it should be waterproof and dustproof film (AS film). The contact area with the lens becomes smaller and presents an angle of 110 degrees, which makes it difficult to adhere to the lens surface of the high-power laser lens group, so the surface of the filter will be smoother, adding waterproof, anti-fog, dust-proof, anti-fingerprint, etc. Anti-fouling antireflection coating (AR film)

   The antireflection coating discovered in the 1930s promoted the early development of thin film optics. For the promotion of technical optics, in all optical films, antireflection coatings also play the most important role. Until today, the anti-reflection coating (AR film) produced by it

   light has a wave-particle duality, that is, it can be understood as a kind of wave and can be microscopically Think of it as a beam of particles moving at high speed. Attention, don't understand it as a simple wave and a simple particle here.

  How to distinguish the coating surface of the filter

   This is a single-layer reflector with only one side of the coating filter sheet. We assume that its top surface (green picture) is the coated surface. Now look at the red line in the illustration from the perspective. If you can’t see the red line

  The nature of light

  the nature of light


  The essence of light is an electromagnetic wave that can cause vision, and it is also a particle (photon). Light can travel in transparent materials such as vacuum, air, and water. Speed u200bu200bof light: The speed of light in a vacuum is 300,000 kilometers per second.

  How to choose a grating

   When choosing a grating, the following factors should be considered: Blaze wavelength, which is the point of greater diffraction efficiency of the grating Therefore, when choosing a grating, the blaze wavelength should be chosen as close as possible to the wavelength required by the experiment. If the experiment is in the range of visible light, the birefringence phenomenon of light can be observed

   Shenzhen Wangxinsheng Technology Co., Ltd. is the research and development and production of high-power laser (laser) lenses, dichroic lenses, laser mirrors, and beam splitters. Professional factory, especially good at high-power laser fiber cutting machine, protective lens, focusing lens, collimator lens of laser welding machine, power range 500W-8000W. The factory is located next to the Guanlan Golf Club, Baoan District, Shenzhen, with an experienced Ru0026D and production team. The equipment includes Taiwan Maijun polishing machine, Korean Era Seiko edging machine, Japanese new Coron coating machine, glass cutting machine, ultrasonic, American LAMBDA950 spectrophotometer (measuring range 175nm-3500nm), interferometer, eccentric meter, etc. With complete production technology and professional testing capabilities, rigorous technical processes and strict quality management system guarantee the excellence of the quality of optical lenses.

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