Diffractive-optics-based micromirror scanning system

John Barnett Hammond; Thomas J. Suleski; Eric G. Johnson; Charles S. Koehler; John E. Childers; Michael M. Johnson

doi:10.1117/12.351634

2 July 1999 Diffractive-optics-based micromirror scanning system

John Barnett Hammond, Thomas J. Suleski, Eric G. Johnson, Charles S. Koehler, John E. Childers, Michael M. Johnson

Proceedings Volume 3787, Optical Scanning: Design and Application; (1999) https://doi.org/10.1117/12.351634
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Most laser projectors for LADAR systems are limited to small scan angles as they utilize acousto-optic devices, spatial light modulators, or fine-steering mirrors for beam steering. Additionally, the projected beam is usually circular and Gaussian. In order to improve the functionality of such systems, MEMS-based mirrors and diffractive optics may be used. This paper describes Digital Optics Corporation's work in developing and demonstrating a novel LADAR scanning system that incorporates a MEMS scanning mirror coupled with diffractive optical elements in a compact breadboard system. The MedCam MEMS mirror has been demonstrated with a 2D scan mode across large scan angles. The MEMS mirror system is experimentally compared to a Liquid Crystal Spatial Light Modulator based system. The diffractive elements generate spot arrays or other patterns that are more conductive to target detection schemes that an ordinary gaussian beam shape.

Citation Download Citation

John Barnett Hammond, Thomas J. Suleski, Eric G. Johnson, Charles S. Koehler, John E. Childers, and Michael M. Johnson "Diffractive-optics-based micromirror scanning system", Proc. SPIE 3787, Optical Scanning: Design and Application, (2 July 1999); https://doi.org/10.1117/12.351634

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