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Proceedings Paper

Null lens design for small aspherical surface with large NA
Author(s): Peiji Guo; Jingchi Yu
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Paper Abstract

To test the small aspherical mold surface with large NA, we develop a kind of null lens system which is made up of four thin lenses, the first two thin lenses form a system with small NA which is mainly used to produce positive spherical aberration; the other two thin lens form a large NA system which offers negative spherical aberration; the latter together with that of the front two elements meets the null testing need. The wavefront variation of testing system due to the manufacture & test & assembly and adjustments error is analyzed, by this analyses, we know that we are capable of measuring the aspherical surface to the accuracy of 0.05λ, it is enough to satisfy the testing of mold surface of compact disc object lenses.

Paper Details

Date Published: 6 October 2000
PDF: 6 pages
Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); doi: 10.1117/12.402793
Show Author Affiliations
Peiji Guo, Changchun Institute of Optics and Fine Mechanics (China)
Jingchi Yu, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 4231:
Advanced Optical Manufacturing and Testing Technology 2000
Li Yang; Harvey M. Pollicove; Qiming Xin; James C. Wyant, Editor(s)

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