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Proceedings Paper

Measuring refractive index of plate glass using joint transform correlative technique
Author(s): Xueju Shen; Hongqi Gao; Yongzhong Wang; Wensheng Hua; R. Xue; Yong Zhang
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Paper Abstract

A method for measuring refractive index of plate glass by joint transform correlative technique is given. In the one of two correlative light beams passing through the two correlative images of certain separation in input plane, a unknown refractive index and known thickness plate glass is inserted with a certainty angle (θ). Joint transform power spectrum (JPS) is recorded separately at the back focal plane of the lens by a CCD detector when Θ = 90° or Θ = 45°, the JPS is sent to the LCD on the input plane by the computer. Then two groups of correlative points will be recorded separately by the CCD detector. On the basis of the interval difference value between two groups of altered correlative points, the refractive index is calculated. Theory analysis and examination result are given.

Paper Details

Date Published: 11 January 2005
PDF: 5 pages
Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005); doi: 10.1117/12.572958
Show Author Affiliations
Xueju Shen, Shijiazhuang Mechanical Engineering College (China)
Hongqi Gao, Shijiazhuang Mechanical Engineering College (China)
Yongzhong Wang, Shijiazhuang Mechanical Engineering College (China)
Wensheng Hua, Shijiazhuang Mechanical Engineering College (China)
R. Xue, Shijiazhuang Mechanical Engineering College (China)
Yong Zhang, Shijiazhuang Mechanical Engineering College (China)


Published in SPIE Proceedings Vol. 5642:
Information Optics and Photonics Technology
Guoguang Mu; Francis T. S. Yu; Suganda Jutamulia, Editor(s)

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