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:
Mar. 30, 1993
Filed:
Apr. 21, 1992
Jianzhong Jiao, Anderson, IN (US);
Jeffrey J Calderas, Anderson, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A device for providing large area uniform illumination of display panels comprises a light transmitting member including a light receiver for receiving light from a light source and reflecting that light within the light transmitting member in at least a first direction parallel to a first axis and parallel to the plane of the light transmitting member. A plurality of first reflectors reflect a first portion of the light from the first direction to an exit direction orthogonal to the plane of the light transmitting member and reflect a second portion of the light from the first direction to a second direction parallel to the plane of the light transmitting member and parallel to a second axis that is perpendicular to the first axis. A plurality of second light reflectors reflect the light from the second direction to the exit direction.