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Optics spherical surface shape parameter processing method based on discrete error concealment technology

A technology of error elimination and parameter processing, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems affecting the performance of optical instrument systems, optical mirror surface deformation, etc., to achieve the effect of eliminating discrete errors and accurate engineering calculations

Inactive Publication Date: 2016-06-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0002] Space optical payloads are more sensitive to external load excitations. Sometimes optical remote sensors are exposed to harsh thermal and force loading environments, which will deform the optical mirror and seriously affect the performance of the optical instrument system.

Method used

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  • Optics spherical surface shape parameter processing method based on discrete error concealment technology
  • Optics spherical surface shape parameter processing method based on discrete error concealment technology
  • Optics spherical surface shape parameter processing method based on discrete error concealment technology

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Embodiment Construction

[0034] Due to the different optical surface shapes, the specific methods for solving the surface parameters are different. The method for solving the parameters of commonly used spherical optical mirrors is comprehensively given, that is, the method for solving the surface parameters of the spherical surface based on the finite element discrete error elimination algorithm, in order to improve the optical surface parameters. Shape parameter solution accuracy.

[0035] [1] Optical surface shape and finite element discretization

[0036] Such as image 3 , based on the CAD model of the spherical surface and finite element discretization; the theoretical surface shape parameters of the spherical surface (a, b, c, R) = (0,0,0,100) are known.

[0037] The grid model of the discrete back shape is as follows, the original coordinate data of the surface shape and the deformed surface shape change data are extracted in the finite element pre-processing program, and saved as a text file...

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Abstract

The invention provides an optics spherical surface shape parameter processing method based on discrete error concealment technology; the spherical surface shape is a normal surface shape in optics system design, and will change under thermal and outer force load effect; the surface shape change can affect the optics system performance, so a high precision surface shape parameter processing method needs to be considered; compared with a conventional surface shape parameter solve method, the optics spherical surface shape parameter processing method based on discrete error concealment technology can obviously improve the optics surface shape solve precision, can effectively eliminate optical surface shape finite element discrete errors, so surface shape parameter engineering calculation can be more accurate and reliable.

Description

technical field [0001] The invention relates to a method for processing optical spherical surface shape parameters based on discrete error elimination technology. Background technique [0002] Space optical payloads are more sensitive to external load excitations. Sometimes optical remote sensors are exposed to harsh thermal and force loading environments, which will deform the optical mirror and seriously affect the performance of the optical instrument system. Based on the environmental working conditions of the optical payload, the optical surface shape can be simulated and analyzed, and the optical surface shape characterization parameters can be obtained to verify the environmental adaptability of the optical payload. With the development of finite element technology, the simulation calculation of optical surface shape based on finite element method has become an important technical means to evaluate the change of optical surface shape under external load. [0003] Whe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 徐广州阮萍杨建峰
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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