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Proceedings Paper

Hybrid singlet lens applied to visible telescope objective design
Author(s): Liping Zhao; Minxian Wu; Yingbai Yan; Guofan Jin
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Paper Abstract

The design of a hybrid diffractive-refractive singlet to replace a conventional doublet objective lens is studied. The method for designing the initial configuration is presented based on the correction of the spherochromatism and spherical aberration. The examples given in this paper show that by using the modified formula one can get a better initial configuration without the significant spherochromatic aberration introduced by the aspheric term of DOE's polynomial. Finally a hybrid singlet in visible wave band ( ? from 656.3nm to 486.1 mn) is successfully designed. In comparison with traditional doublet, this hybrid singlet has smaller aberration, simplified configuration and only one material BK7 used. Experimental results show that the diffraction efficiency of DOE is the bottleneck for the hybrid optical system to be actually used in the image field.

Paper Details

Date Published: 25 September 1997
PDF: 8 pages
Proc. SPIE 3130, Lens Design, Illumination, and Optomechanical Modeling, (25 September 1997); doi: 10.1117/12.284049
Show Author Affiliations
Liping Zhao, Tsinghua Univ. (United States)
Minxian Wu, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 3130:
Lens Design, Illumination, and Optomechanical Modeling
R. Barry Johnson; Robert E. Fischer; R. Barry Johnson; Richard C. Juergens; Richard C. Juergens; Paul R. Yoder Jr.; Warren J. Smith; Paul R. Yoder Jr., Editor(s)

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