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Optical element processing method and system

A technology of optical parts and processing methods, which is applied in the field of high-efficiency and high-precision processing methods and systems for optical parts with complex structures of superhard materials, can solve problems such as inability to apply well, and achieve the advantages of improving product processing efficiency, rapid processing, and efficient processing. Effect

Inactive Publication Date: 2020-11-24
SHANGHAI AEROSPACE CONTROL TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent does not apply well to the processing of optical parts

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  • Optical element processing method and system
  • Optical element processing method and system
  • Optical element processing method and system

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example 1

[0025] The invention discloses a processing method for optical parts, which processes silicon carbide-based aspheric optical parts.

[0026] Step P1: Using a CNC milling machine to mill and process the blank body of the part, and process it into a spherical surface, and the radius of curvature of the spherical surface is the closest spherical surface of the surface shape of the target optical part. Its calculation formula is as follows:

[0027]

[0028] where r 0 is the best comparison sphere; R 0 is the radius of curvature of the vertex of the aspheric surface; e is the binomial coefficient; h is half of the caliber of the aspheric surface;

[0029] Step P1: Grinding and polishing the optical parts in step P1. Use diamond powder, silicon carbide, aluminum oxide, boron carbide and other abrasives to prepare grinding and polishing liquid, and grind and polish the parts in step P1 on CNC polishing machines, two-axis machines, four-axis machines and other equipment to achi...

example 2

[0036] The invention discloses a processing method for optical parts, which processes silicon carbide-based aspheric optical parts.

[0037] Step P1: Using a CNC milling machine to mill and process the blank body of the part, and process it into a spherical surface, and the radius of curvature of the spherical surface is the closest spherical surface of the surface shape of the target optical part. Its calculation formula is as follows:

[0038]

[0039] where r 0 is the best comparison sphere; R 0 is the radius of curvature of the aspheric surface; e is the binomial coefficient; h is half of the aspheric surface diameter

[0040] Step P2: Grinding and polishing the optical parts in step P1. Use diamond powder, silicon carbide, aluminum oxide, boron carbide and other abrasives to prepare grinding and polishing liquid, and grind and polish the parts in step P1 on CNC polishing machines, two-axis machines, four-axis machines and other equipment to achieve a surface accurac...

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Abstract

The invention provides an optical element processing method and system. The optical element processing method comprises the following steps of S1, machining a part matrix to a set dimensional precision to acquire part matrix machining result information; S2, grinding and polishing the part according to the optical part matrix machining result information; S3, plating a modified layer of the part according to grinding and polishing result information to acquire plating result information of the modified layer; and S4, carrying out single-point diamond turning on the part according to the plating result information of the modified layer to acquire single-point diamond turning result information. The method and system can be used for machining the part quickly and improves the product machining efficiency, so that the product machining economical benefit is further improved. Meanwhile, the method can achieve efficient machining of the optical part with a complex structure, and particularly has obvious advantages in the aspects of high order aspheric surfaces, free-form curved surfaces, optical micro structures and the like.

Description

technical field [0001] The present invention relates to the technical field of optical parts processing, in particular to a method and system for processing optical parts, in particular to an efficient and high-precision processing method and system for optical parts with complex structures of superhard materials. Background technique [0002] Aspherical optical components are optical components whose surface shape deviates from spherical, which has greater freedom and flexibility than traditional planar and spherical optical components, and has various shapes. Therefore, it can effectively correct various aberrations, improve image quality, reduce the number of optical components required by the system, reduce the overall size of the system, and reduce the weight of the system. At present, the processing of aspheric optical parts is mainly processed by grinding and polishing, but this processing method has many problems such as large processing stress, deep subsurface damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B27/00
CPCB24B1/00B24B27/00B24B27/0092
Inventor 墨洪磊兰洁申振丰朱蓓蓓袁航陆波朱力敏陈勰
Owner SHANGHAI AEROSPACE CONTROL TECH INST