Predesign of diamond-turned refractive/diffractive elements for IR objectives

Max J. Riedl

doi:10.1117/12.131972

1 July 1992 Predesign of diamond-turned refractive/diffractive elements for IR objectives

Max J. Riedl

Proceedings Volume 10263, Lens Design: A Critical Review; 1026309 (1992) https://doi.org/10.1117/12.131972
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Diffractive lenses have arrived. Literally hundreds of papers have been published^1-25and technology impact reports have been written about the exciting addition of a new tool for the lens designer.¹ Sophisticated computer programs have been developed to aid in the optimization of these diffractive phase profiles for a wide variety of applications. Now, several fabrication methods are being pursued to produce these diffractive elements economically. The best known process is the etching of a multi-level relief grating, known as binary optics.² This process uses sets of computer generated lithographic masks. Another, more recently developed method is Dry Photopolymer Embossing (DPE).³ This replication process uses master holograms. And now, diamond turning is being applied for the machining of these elements.^4,5 Diamond turning is especially well suited for infrared optics. As any process has advantages and limitations, so has diamond turning. These advantages and limitations are discussed and general guidelines are presented to aid the designer and systems engineer in the project predesign stage.

Citation Download Citation

Max J. Riedl "Predesign of diamond-turned refractive/diffractive elements for IR objectives", Proc. SPIE 10263, Lens Design: A Critical Review, 1026309 (1 July 1992); https://doi.org/10.1117/12.131972

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