Optical system and method for use in projection systems

Optical: systems and elements – Single channel simultaneously to or from plural channels

Reexamination Certificate

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C359S619000

Reexamination Certificate

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08009358

ABSTRACT:
An optical system and method are presented to produce a desired illuminating light pattern. The system comprises a light source system configured and operable to produce structured light in the form of a plurality of spatially separated light beams; and a beam shaping arrangement. The beam shaping arrangement is configured as a diffractive optical unit configured and operable to carry out at least one of the following: (i) combining an array of the spatially separated light beams into a single light beam thereby significantly increasing intensity of the illuminating light; (ii) affecting intensity profile of the light beam to provide the illuminating light of a substantially rectangular uniform intensity profile.

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International Search report issued by the European Patent Office on Jul. 22, 2009, in Application No. 04770619.7.
Roberts, N.C. “Beam Shaping by Holographic Filters,” Applied Optics, OSA, Optical Society of America, Washington D.C., 28(1): 31-32 (Jan. 1, 1989).
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