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The cold working process of optical lens and its application in lens
Optical lenses are divided into spherical lenses and cylindrical lenses. The curved surface of a spherical lens is a part of the spherical surface, and is classified into a convex spherical lens or a concave spherical lens according to the convergence or separation of parallel light rays. Convex spherical optical lenses are used to correct hyperopia, presbyopia or aphakia. Concave spherical lenses are used to correct myopia. The curved surface of the cylindrical lens is a part of the cylinder. The axis of the cylindrical lens is parallel to the cylinder. There is no refractive power in the direction of the axis and perpendicular to the axis. The direction of the refractive power of the largest, and divided into convex cylindrical lenses or concave cylindrical lenses, respectively used to correct hyperopia or myopia astigmatism.
Today, let’s talk about the cold working process of optical lenses.
The first step: milling, is to remove the uneven bubbles and impurities on the surface of the lens, (about 0.05-0.08) play a role in shaping.
The second step: the fine grinding process is to remove the damaged layer of the milled lens and fix the R value laser focusing lens.
The third step: the polishing process is to polish the finely ground lens at one time. This process is mainly to make the appearance better.
The fourth step: cleaning is to clean the polishing powder on the surface of the polished lens to prevent compression.
Step 5: Edge grinding is to grind the original outer diameter of the lens to the specified outer diameter.
Step 6: Coating is to coat one or more layers of colored film or other film on the surface of the lens that needs to be coated.
No. 7: Inking, it is necessary to apply a layer of black ink on the outside of the lens to prevent reflection.
Track 8: Gluing, which is to combine two optical lenses with opposite R values u200bu200band the same outer diameter material with glue.
The optical lens is made by using a variety of high-hard materials to vaporize the lens in a vacuum. The optical lens can selectively increase the transmittance of the laser protective lens according to the principle of light interference. Through visible light, the transmittance of the optical lens is increased to make the image clearer, and it can also reflect harmful infrared rays and ultraviolet rays. The optical lens greatly improves the surface hardness of the optical resin lens. The optical lens is much more compact, which is better than similar products on the market.
Optical lenses are widely used in military, scientific research, medical treatment, bioengineering, astronomical observation and other fields. The growth rate of production and sales of optical lens manufacturing exceeds 65%. Optical lenses are in the instrumentation industry. The 14 sub-sectors are far ahead. A large part of the popularity of the optical lens industry is related to the rapid development of the capacitive touch screen market. The composition and manufacturing process of optical lenses are not only a crucial step in the development of optical instruments, but also a national scientific research. The embodiment of strength.
As a multi-component inorganic substance, people have been unable to understand the relationship between the components and properties of the optical laser collimator lens for a long time. The power density of laser with high beam quality can evaporate metal or ceramic products with specific properties, using advanced instruments and technical means. The strong beam of optical lenses makes the laser a powerful tool. It is used in the world's industry and medicine. The application of the field is becoming more and more popular.
The lens made of ED glass is used in the camera lens. Due to the different wavelengths of the colored light of different colors of visible light (red, blue, and green), the refractive index of the optical lens is also different. Different, the color depth of the optical lens, adjust the light transmittance, make the human eyes better adapt to the changes of the ambient light, reduce visual fatigue, protect the eyes, and integrate fashion, health and convenience. It is a good lens choice.
The optical lens grade sunglasses are made of resin or PC material. When subjected to external impact, only the optical lens will crack and not burst. The optical lens is multi-acrylic. Made of, it is easy to break and cause trauma to the face or eyes when it is impacted by an external force. The multi-layer film containing medical equipment not only has clear and good imaging quality, but also can block 100% of ultraviolet rays to avoid eye aging and disease.
Optical lens, in general, means that lenses made of optical glass are mainly used in optical instruments. Optical lenses were originally used to make lens glass, which was ordinary window glass or wine bottle. For the pimple, only dyed lenses cannot actually block ultraviolet rays, and darker optical lenses will cause pupils to dilate to allow more ultraviolet rays to enter, which will cause more serious damage to the eyes. Sunglasses are better made of optical lenses. Optical instruments are composed of a single or a combination of multiple optical devices. Optical lenses play a major role in optical instruments and cannot be ignored.