Optical design of a diode laser based dynamic IR scene projector

John B. Cooper; D. Brett Beasley

doi:10.1117/12.210585

2 June 1995 Optical design of a diode-laser-based dynamic IR scene projector

John B. Cooper, D. Brett Beasley

Proceedings Volume 2469, Targets and Backgrounds: Characterization and Representation; (1995) https://doi.org/10.1117/12.210585
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

As IR sensor systems become more sophisticated, more stringent requirements are also placed on in-band IR scene projectors for hardware-in-the-loop (HWIL) applications. In general, the projector must be as good as, if not better than, the seeker in its performance. High scene fidelity, wide dynamic range, and high frame rates are now firm requirements, rather than idealized design goals. A novel type of projector system using diode lasers as sources offers several performance advantages over other currently available projector technologies. A projector of this type has been designed, built, and delivered to USAMICOM RDEC's HWIL branch under a Phase II Small Business Innovative Research (SBIR) award. The projector demonstrates high dynamic range, 128 X 128 scene size, and 8 KHz frame rates. The optical design for this system presents challenges not usually seen in projector systems, as it combines characteristics both of scanning and imaging systems. The optical system can best be described as a type of `reverse FLIR,' and uses anamorphic elements, an unusual polygon scan mirror, and a 2:1 telescopic relay.

Citation Download Citation

John B. Cooper and D. Brett Beasley "Optical design of a diode-laser-based dynamic IR scene projector", Proc. SPIE 2469, Targets and Backgrounds: Characterization and Representation, (2 June 1995); https://doi.org/10.1117/12.210585

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