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:
Oct. 17, 1989
Filed:
Jul. 30, 1987
Osamu Umeda, Gifu, JP;
Tohru Nakakusu, Tokyo, JP;
Makoto Sato, Tokyo, JP;
Tatsuo Shimazaki, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A projection lens, for enlarging and projecting an image displayed on a liquid crystal display panel onto a transmission type screen provided at a display window of a projector case, is arranged so that its optical axis is perpendicular to the optical axis of projection toward the transmission type screen. At least one mirror, for reflecting an image projected through the projection lens toward the transmission type screen, is arranged between the projection lens and the transmission type screen. The liquid crystal display panel is arranged such that its optical axis is perpendicular to the optical axis of the projection lens. At least one mirror, for reflecting an image displayed on the liquid crystal display panel toward the projection lens, is arranged between the liquid crystal display panel and the projection lens.