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Proceedings Paper

Binary optics pyroelectric chopper technology
Author(s): Xu Hu; Jun Yuan; Li Long
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Paper Abstract

It is obvious character that the chopper must be used in Uncooled pyroelectric imaging system. At present, three mainly type chopper which are linear chopper, Archimedean spiral chopper and Fresnel zone plate array (FLA) chopper. The FLA has some advantages than the others, which used diffraction solution. The paper report pyroelectric focal plane binary optics chopper which was processed by laser direct writing etched Fresnel zone plate array shape, and draw the test results: the sub-beam ratio of 1.2 x 103; diffraction efficiency more than 40%; non-uniformity: multi-point test better than 10% in the FLA chopper.

Paper Details

Date Published: 31 December 2010
PDF: 7 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75443H (31 December 2010); doi: 10.1117/12.885670
Show Author Affiliations
Xu Hu, Kunming Institute of Physics (China)
Jun Yuan, Kunming Institute of Physics (China)
Li Long, Kunming Institute of Physics (China)

Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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