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Proceedings Paper

Design of adjustable laser beam high-resolution particle size measuring lens
Author(s): Zhi-jie Cao; Ming Li; Shu-wei Yang; Li-juan Hong
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Paper Abstract

On the basis of research on the theory of the Fourier transform lens, according to the observation and test requirements of a fine particle and the geometrical optics aberration theory, a particle size measuring lens of adjustable high resolution laser beam that worked for wavelength of 660 nm is designed, the laser beam can be controlled through the aperture adjusting device of the lens, and can high definition imaging for the semiconductor fiber laser that core diameter is 4.5μm, numerical aperture N.A is 0.13, the output wavelength is 660nm. In the case of object distance for the next 129.5mm, the spot diameter approximately equal to the theoretical amplification value, the main image spot is clear and no flare.

Paper Details

Date Published: 19 October 2016
PDF: 5 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101551O (19 October 2016); doi: 10.1117/12.2246630
Show Author Affiliations
Zhi-jie Cao, Ministry of Public Security (China)
Ming Li, Ministry of Public Security (China)
Shu-wei Yang, Ministry of Public Security (China)
Li-juan Hong, Ministry of Public Security (China)

Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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