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Proceedings Paper

Measurement of focal length of a lens with holographic grating and thin beam
Author(s): Guilin Sun; Xiaoxing Zhang
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Paper Abstract

A new versatile method to measure the focal length of conventional imaging lens, Fourier transform objective and linear scanning objective using laser as light source is reported, which uses a holographic grating and thin laser beam, and the measurement accuracy is analyzed and relative issues are discussed in the paper. The method has the advantages of versatility, high measurement accuracy, no complex auxiliary needed and easy adjustment. In addition, the spherical aberration of the lens undertest can also be obtained from the same set of testing data by some transformation and processing.

Paper Details

Date Published: 15 May 1997
PDF: 5 pages
Proc. SPIE 3010, Diffractive and Holographic Device Technologies and Applications IV, (15 May 1997); doi: 10.1117/12.274435
Show Author Affiliations
Guilin Sun, Beijing Institute of Machinery (China)
Xiaoxing Zhang, Beijing Institute of Machinery (China)


Published in SPIE Proceedings Vol. 3010:
Diffractive and Holographic Device Technologies and Applications IV
Ivan Cindrich; Sing H. Lee, Editor(s)

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