The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Jan. 30, 1998
Tomoki Gunjima, Yokohamashi, JP;
Yoshiharu Ooi, Yokohamashi, JP;
Masao Ozeki, Yokohamashi, JP;
Hiroaki Ito, Yokohamashi, JP;
Hiroshi Hasebe, Kowloon, HK;
Tetsuro Matsumoto, Yokohama, JP;
Yutaka Nakagawa, Yokohama, JP;
Asahi Glass Company, Ltd., Tokyo, JP;
Abstract
An illumination device for a direct viewing type display element comprising a flat light guide; a light source set such that light is incident on a side portion of said flat light guide; a polarized light separating flat set on a first side of a light emitting side of the flat light guide for transmitting a p polarized light component and reflecting at least a portion of an s polarized light component with respect to a light ray substantially having a predetermined direction of incidence; and a light reflecting sheet disposed on a second side opposite to said light emitting side of the flat light guide in parallel with the light emitting site.