Details of a Hybrid Lens

doi:10.1117/3.835815.ch18

Book: Optical Design: Applying the Fundamentals

Author(s): Max J. Riedl

Published: 2009

https://doi.org/10.1117/3.835815.ch18

Author Affiliations +

Abstract

18.1 Introduction Hybrid lenses are being frequently used in infrared systems, primarily forcolor correction. We shall analyze one such lens, which is the third element of the MWIR objective shown in Fig. 18.1. 18.2 Hybrid The prescription of the diffractive surface (front surface) is as follows: 1. Radius R 1 =21.246406mm 2. Conic constant Îº 1 =â0.151513 (prolate ellipse) 3. Phase coefficient P 2 =â5975.55048. 4. S 2 =Î»P 2 2ÏR 2 0 =0.004Ã(â5975.550548) 2ÏÃ100 2 =â3.804Ã10 â4 5. Free aperture D=11.84mm