Optical scanning system having multi-pass acoustic traveling wav

Details Optical scanning system having multi-pass acoustic traveling wav Optical scanning system having multi-pass acoustic traveling wav

1996-06-25

1998-09-01

McGraw, Vincent P.

Optical: systems and elements

Optical modulator

Light wave directional modulation

359307, 359310, G02F 133

Patent

active

058018743

ABSTRACT:
A folded acoustic traveling wave lens arrangement imparts multiple passes of an incident optical beam through the traveling wave lens, and thereby effectively maximize utilization of acoustic power. A lens of optically transmissive bulk material, such as quartz, is disposed in the path of an incident light beam which is spatially scanned by a light beam deflector. The bulk material of the lens element has a reflective layer disposed upon at least one of its surfaces, and is configured such that an incident light beam undergoes multiple passes through the acoustic wavefront propagating through the lens, prior to emerging from the lens. Aberration in the emerging beam due to multiple passes through the bulk material is corrected by a pupil plane correction plate.

REFERENCES:
patent: 4182543 (1980-01-01), Wied et al.
patent: 4257016 (1981-03-01), Kramer, Jr. et al.
"Quartz Acoustooptical Filter", Vizen et al., Instrum & Exp Tech. (USA), vol. 22, No. 6, p. 2, Nov.-Dec. 1979.
"Guided Acoustic Traveling Wave Lens for High-Speed Optical Scanners" by S.K. Yao, D. Weid and R.M. Montgomery, reprinted from Applied Optics, vol. 18, p. 446, Feb. 15, 1979, pp. 446-453.
"Optical Beam Deflection Using Acoustic-Traveling-Wave Technology" by R.H. Johnson and R.M. Montgomery, an article presented at the SPIE Symposium on Optical, Electro-Optical, Laser and Photographic Technology, Aug., 1976.

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