Deformation processing method for optical aspheric element

A deformation processing, aspheric technology, applied in optical surface grinder, metal processing equipment, control of workpiece feed movement, etc., can solve the problems of long processing time and high cost, reduce processing cost, improve surface waviness error, The effect of shortening the processing time

Active Publication Date: 2015-07-08
BEIJING GUOWANG OPTICAL TECH CO LTD
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Problems solved by technology

[0004] In order to solve the problems of long processing time and high cost in existing optical aspheric element processing methods, the present inv

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  • Deformation processing method for optical aspheric element
  • Deformation processing method for optical aspheric element
  • Deformation processing method for optical aspheric element

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[0025] The present invention will be further described in detail below in conjunction with the drawings.

[0026] The deformation processing method of an optical aspheric element of the present invention is mainly realized through the following steps:

[0027] Step 1. The surface generatrix equation of optical aspheric element 1, as shown in formula (1):

[0028] Z ( s ) = C s 2 1 + 1 - ( 1 + k ) C 2 s 2 + A 4 s 4 + A 6 s 6 + . . . A 2 n s 2 n - - - ( 1 )

[0029] In formula (1), Z(s) is the surface profile of the optical aspheric element 1 perpendicular to the optical axis, s is the radial distance between the optical axes, C is the surface curvature of the optical aspheric element 1, and k is the conic constant , A 4 …A 2n Is the high-order optical aspheric coefficient, n is an integer and n≥2.

[0030] Step 2: According to the surface generatrix equatio...

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Abstract

The invention claims a deformation processing method for an optical aspheric element, relates to the optical manufacture field and solves the problems of the existing optical aspheric element processing method that the processing time is long and the cost is low. Specially-made vacuum fixture is designed for the optical aspheric element to be processed, the vacuum card mounting mode is adopted, the surface of the optical aspheric element has certain deformation under the vacuum card mounting state, the processing method for the optical aspheric element is adopted for processing, the concrete mode is the grinding and forming mode, accurate grinding mode and polishing mode; the vacuum fixture is taken off after processing, and the surface shape error of the optical aspheric element meets the technology design requirement under the non card mounting state. The processing of the surface of the optical aspheric element can be realized through deformation card mounting operation; the aspheric optical element processing mode is used for correcting partial diaphragm, the processing efficiency of the surface of the optical aspheric element is effectively improved, the processing time is greatly shortened, the processing cost is reduced and the processing precision is improved.

Description

technical field [0001] The invention relates to the technical field of optical processing, in particular to a deformation processing method of an optical aspheric element. Background technique [0002] The surface curvature radius of the optical aspheric element will change with the distance from the central axis, so the chief ray and the paraxial ray can be corrected differently to obtain higher imaging quality and reduce the number of necessary components in the optical system , to reduce the design cost of the optical system, so optical aspheric components are widely used in medical, military, aerospace and other fields. [0003] With the development of science and technology, optical aspheric components have also been more and more widely used. However, since the surface curvature radii of optical aspheric elements are not consistent, the existing optical aspheric elements are manufactured by partial processing, single-point grinding is used for milling when forming, an...

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Application Information

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IPC IPC(8): B24B13/00B24B13/005B24B49/00
CPCB24B13/00B24B13/005B24B13/012B24B49/00
Inventor 代雷陈华男闫丰谷勇强隋永新杨怀江
Owner BEIJING GUOWANG OPTICAL TECH CO LTD
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