Illumination optical arrangement

Details Illumination optical arrangement Illumination optical arrangement

1992-11-24

1993-10-12

Epps, Georgia Y.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

359370, 359371, 359385, 359386, 359577, 359591, 362268, 362259, G02B 2700

Patent

active

052531104

ABSTRACT:
An illumination optical arrangement which uses a laser light source to produce a uniform illumination which is high in brightness and substantially free of interference patterns. The illumination optical arrangement includes light source means for emitting a coherent light beam, optical illuminance distribution uniformizing means for making substantially uniform the intensity distribution in a beam cross-section of illumination by the coherent light beam on a plane to be illuminated, and optical polarizing means for producing from the coherent light beam a plurality of polarized light components which are different in polarized state from each other in such a manner that wavefronts of incident light beams of the polarized light components to the optical illuminance distribution uniformizing means are inclined relative to each other whereby interference patterns produced by the polarized light components are relatively shifted in position in the illuminated plane.

REFERENCES:
patent: 4109304 (1978-08-01), Khvalovsky
patent: 4370026 (1983-01-01), Dubroeucq et al.
patent: 4619508 (1986-10-01), Shibuya et al.
patent: 4851978 (1989-07-01), Ichihara
patent: 4964707 (1990-10-01), Hayashi
patent: 5016149 (1991-05-01), Tanaka etal.

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