Reflecting illumination projecting device

U.S. Patent Number: 5381197

Abstract: A reflecting illumination projecting device includes a light source which emits illuminating light and a mirror which reflects the illuminating light emitted from the light source. A transmission type image forming portion is provided between the light source and the mirror to form a pattern to be projected, and a projecting lens is provided between the light source and the image forming portion. An optical path separating element is disposed in the vicinity of an exit pupil of the projection lens. The optical path separating element includes a first portion for introducing substantially all of the illuminating light to the projecting lens and a second portion for introducing light reflected by the mirror onto the image projection plane.

Inventors: Yoshida; Kazushi (Tokyo, JP), Ogawa; Ryota (Tokyo, JP)

Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha (Tokyo, JP)

Application Number: 08/065,745

Issued: 1995-01-10

Expired: 2007-01-10

Classes: 353/98 ; 353/37

Field of search: 353/63-66,31,37,98-99,DIG.3,DIG.4,20 359/38,70,71

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