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Proceedings Paper

Design and fabrication of low-cost thermal imaging optics using precision chalcogenide glass molding
Author(s): George Curatu
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Paper Abstract

Aspheric and diffractive surfaces in infrared materials are traditionally fabricated by single point diamond turning, which is a high-cost, low-throughput process, not suitable for low-cost, high-volume applications. Precision molding of chalcogenide glasses is a novel process we developed to allow the efficient fabrication of quality infrared optics in large volumes. In this paper we present the advantages and particularities of designing thermal imaging lenses for high-volume applications using precision molded chalcogenide glasses. As an example, we present a compact 19 mm F/1.1 infrared lens design for a 320 × 240 uncooled detector array operating from 8 to 14 microns. The excellent image quality and transmission of tested prototypes prove that precision molding of chalcogenide glasses is an ideal optical fabrication technology for the high-volume production of infrared optics.

Paper Details

Date Published: 29 August 2008
PDF: 7 pages
Proc. SPIE 7060, Current Developments in Lens Design and Optical Engineering IX, 706008 (29 August 2008); doi: 10.1117/12.797785
Show Author Affiliations
George Curatu, LightPath Technologies (United States)

Published in SPIE Proceedings Vol. 7060:
Current Developments in Lens Design and Optical Engineering IX
Pantazis Z Mouroulis; Warren J. Smith; R. Barry Johnson, Editor(s)

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