Analysis of Optical Glass

Mar. 13, 2020

From the word "light" alone, it can be seen that it means "bright", "bright" and "transparent". Optical glass will certainly have these attributes. Optical glass dome manufacturer to share with you:

Optical glass has high transparency, chemical and physical uniformity. Optical glass has specific and precise optical constants. Optical glass can be divided into silicate, borate, phosphate, fluoride and sulfur compounds. Series, optical glass has stable optical properties and high optical uniformity. Optical glass has selective absorption and transmission properties for specific wavelengths in the ultraviolet, visible and infrared regions. It is divided into selective absorption type, cut-off type and neutral gray according to its spectral characteristics 3 categories.

Optical glass is an indispensable optical material for the manufacture of advanced camera lenses and periscope lenses. The raw materials of optical glass are some oxides, hydroxides, nitrates and carbonates. According to the requirements of the formula, the optical glass introduces phosphate Or fluoride, the difference between optical glass and other glasses is that as an integral part of the optical system, it must meet the requirements of optical imaging.

Optical Glass Cylinder Lenses

Optical Glass Cylinder Lenses 

Optical glass cylinder lenses compared with glass sheets, organic materials are less rigid and are more prone to scratches. Optical lenses are scratched by larger grit, deep and rough, optical lenses Then use a microscope to observe and compare the wear of the lens. The optical lens in the center area will affect vision. The hardness of the optical lens base and the hardness of the antireflection film are very different. There is a layer of anti-abrasion film, which makes the lens cushion when it is rubbed by gravel, and it is not easy to produce scratches.

Optical glass cold working process

Milling is to remove uneven bubbles and impurities on the surface of the lens, and it (about 0.05 ~ 0.08) plays a molding role.

The fine grinding process is to remove the damaged layer of the milled lens and fix the R value.

The polishing process is to polish the finely ground lens at one time. This process is mainly to make the appearance better.

Cleaning is to clean the polishing powder on the surface of the lens after polishing to prevent acrylic.

Fraying is to grind the outer diameter of the original lens to the specified outer diameter.

Coating is the coating of colored or other films on the surface of the lens to be coated.

Ink coating is a layer of black ink on the outer edge of the lens that needs to prevent reflections.

Gluing is a combination of two lens glues with opposite R values and the same size and outer diameter material.

Special process: multi-chip processing (disc processing) and small ball processing (20 axis) wire cutting.

According to different production processes, the procedures may be slightly different, such as the order of ink coating and gluing.

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