Binary optics pyroelectric chopper technology

Xu Hu; Jun Yuan; Li Long

doi:10.1117/12.885670

31 December 2010 Binary optics pyroelectric chopper technology

Xu Hu, Jun Yuan, Li Long

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75443H (2010) https://doi.org/10.1117/12.885670
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

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.

Citation Download Citation

Xu Hu, Jun Yuan, and Li Long "Binary optics pyroelectric chopper technology", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75443H (31 December 2010); https://doi.org/10.1117/12.885670

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