Optical components processing technology

Nov. 12, 2019

Along with the large-scale technological revolution and innovation activities in the optical processing industry, new optical component processing methods have emerged. At present, the most commonly used high precision optical components processing technologies include: CNC single-point diamond processing technology, CNC grinding and polishing technology, and optical Lens molding technology, optical plastic molding technology, magnetorheological polishing technology, electroforming technology and traditional grinding and polishing technology.

First, the basic principles of ultra-precision machining technology

1. CNC single point diamond processing technology

CNC single point diamond machining technology is a kind of aspherical optical components processing technology. It is an ultra-precision CNC lathe that uses natural single crystal diamond tools to machine aspherical optical components using a single point turning of diamond tools under precise control of a specific processing environment. This technology is mainly used for optical components of small and medium-sized infrared crystals and metal materials.

2, CNC grinding and polishing technology

The numerical control grinding and polishing technology is an optical part manufacturing technology in which the surface of the workpiece is processed into a desired surface shape by a numerically-precision machine tool, and then polished by a flexible polishing mold to make the workpiece meet the technical requirements. The principle of this technology is closest to the classical optical processing technology, mainly through the precise control of the machine tool to achieve precision machining of optical components.

3. Optical lens molding technology

The optical lens molding technology puts the softened glass into a high-precision mold and directly molds the optical components that meet the requirements of use under the conditions of warming, pressing and oxygen-free. It can be said that the popular application of optical lens molding technology is a major revolution in optical glass dome components processing technology. This technology is of epoch-making significance for the cost reduction and output improvement of aspherical glass components.

Half Ball Lens

Half Ball Lens

Second, the application range of optical components ultra-precision processing technology

1. CNC single point diamond processing technology

At present, diamond turning technology can directly process materials that meet the requirements of optical surface quality, mainly non-ferrous metals, enamel, plastics and infrared optical crystals. However, the processing of glass can not meet the requirements of optical surface quality, and it is necessary to continue grinding and polishing correction. Another major use of CNC single-point diamond machining technology is to machine the precision molds required for various compression moldings.

2, CNC grinding and polishing technology

The main processing material of CNC grinding and polishing technology is glass, which is making up for the shortage of CNC single-point diamond processing technology that can not directly process finished optical glass components. This technology is mainly used to process optical spherical lens and aspherical optical components. It is the main technology to replace the traditional classical optical glass processing method, and has the advantages of high precision and high processing efficiency.

3. Optical lens molding technology

At present, optical lens molding technology has been used to mass produce precision spherical and aspherical lenses. It can not only manufacture commonly used medium-caliber lenses, but also extend to 100 micron microlens arrays and 50 mm larger aperture lenses. It can not only manufacture spherical and aspherical optical components in military and civilian optical instruments, but also manufacture optical communication. Aspherical lenses for fiber couplers, and the like.

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