Aspheric surface testing with CGH on curved surface

LU Zhen-wu; LIU Hua; LI Feng-you

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Aspheric surface testing with CGH on curved surface

更新时间：2020-08-12

- Aspheric surface testing with CGH on curved surface
- Optics and Precision Engineering Vol. 12, Issue 6, Pages: 555-559(2004)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN247
- Received：04 October 2004，
  
  Revised：07 November 2004，
  
  Published Online：15 December 2004，
  
  Published：15 December 2004
- 稿件说明：
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卢振武, 刘华, 李凤有. 利用曲面计算全息图进行非球面检测[J]. 光学精密工程, 2004,(6): 555-559

LU Zhen-wu, LIU Hua, LI Feng-you. Aspheric surface testing with CGH on curved surface[J]. Editorial Office of Optics and Precision Engineering, 2004,(6): 555-559
卢振武, 刘华, 李凤有. 利用曲面计算全息图进行非球面检测[J]. 光学精密工程, 2004,(6): 555-559 DOI：

LU Zhen-wu, LIU Hua, LI Feng-you. Aspheric surface testing with CGH on curved surface[J]. Editorial Office of Optics and Precision Engineering, 2004,(6): 555-559 DOI：

摘要

研究了利用曲面计算全息图进行非球面检测.分析了曲面计算全息图的衍射特性

给出了曲面计算全息图与传统检测方法相结合检测凹非球面和凸非球面的原理及特点

并进行了具体设计.利用激光直接写入设备

在口径为110mm、曲率半径为504mm的曲面基底上制作出了计算全息图

并对金刚石车床车削的凸面非球面进行了检测.利用两步测量法解决了凸非球面的中心部位难以检测的难题

同时利用旋转相减法消除了调节误差

非球面的面形精度为234nm(

P-V

)

与金刚石车床的精度相符.

Abstract

A research on aspheric surface testing by using a computer-generated hologram(CGH)on curved surface is presented. The diffractive property of CGH on curved surface is briefly analyzed

and the principle

property and design examples are given for testing concave and convex aspheric surface

respectively. Compared with the traditional testing methods

this method not only simplifies the optical system

but also decreases the fabrication accuracy of the computer-generated hologram. A CGH on a concave surface with diameter of 110 mm and radius curvature of 504 mm was fabricated by using a laser direct writer

and used to test a convex aspheric surface produced by diamond-turning successfully. Two methods were developed

one that utilizes the strategy in measuring twice can overcome the difficulty in measuring the center areas of the aspheric surface under test

the other that utilizes the strategy of rotating and subtracting can eliminate adjustment errors. We have successfully measured a 110 mm diameter convex surface with the error of 234 nm

P-V

which well agree with the fabrication accuracy of the surface produced by diamond-turning.

关键词

Keywords

references

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卢振武,李凤有,刘华,等.利用曲面计算全息图进行凸面非球面检测[J] .光电子*激光,2004,15(9):1088-1090.

LIU H,LU ZH W,LI F Y,et al.Testing aspheric in interferometric setups: removal of adjustment errors from measurement result[J] . Opt. Commu,2004,242:339-344.(in Chinese)

LIU H,LU ZH W ,LI F Y,et al.Full-aperture measurement of convex surfaces in interferometric test using holographic test plate[J] .Opt. Commu,2004,241:231-236.(in Chinese)

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