Electrooptic TIR light modulator image bar having illumination c

Details Electrooptic TIR light modulator image bar having illumination c Electrooptic TIR light modulator image bar having illumination c

1991-12-31

1993-06-08

Arnold, Bruce Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359263, 359277, 359315, G02F 103, G02F 101, G02F 129

Patent

active

052184692

ABSTRACT:
A technique for reducing interpixel crosstalk by selecting particular illumination conditions and thus tailoring a portion of the spatial frequency response of an optical image bar. A desirable frequency response is one that approximates sin(.pi.Pf) for absolute values of f less than about 1/P, where f is the spatial frequency and P is the minimum pixel pitch. A skew angle of zero and a grazing angle that is approximately twice the interorder diffraction angle provides the desired cutoff of the response for absolute values of f above about 1/P. The desired frequency response for absolute values of f near zero can be achieved by selecting appropriate values for other physical parameters.

REFERENCES:
patent: 4281904 (1981-08-01), Sprague et al.
patent: 4369457 (1983-01-01), Sprague
patent: 4396252 (1983-08-01), Turner
patent: 4450459 (1984-05-01), Turner et al.
patent: 4514739 (1985-04-01), Johnson et al.
patent: 4557563 (1985-12-01), Sprague
patent: 4673953 (1987-06-01), Hecht
patent: 4940314 (1990-07-01), Hecht
William D. Turner et al, "Advances in Laser Scanning Technology", Proceedings of SPIE, Aug. 27-28, 1981, vol. 299.
Robert A. Sprague et al, "Linear total internal reflection spatial light modulator . . . ", SPIE, 1982, vol. 299.
Robert A. Sprague et al, "Advances in Laser Scanning . . . ", Proceedings of SPIE, Apr. 19-20, 1983, vol. 396, pp. 44-49.
Richard V. Johnson et al, "Characteristics of The Linear Array Total Reflection . . . ", Optical Engineering, Nov./Dec. 1983, vol. 22, No. 6, pp. 665-674.

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