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:
Jun. 20, 2000
Filed:
Jan. 23, 1998
John R DiLoreto, Campbell, CA (US);
Dennis W Vance, Paso Robles, CA (US);
Jenmar Visual Systems, Sunnyvale, CA (US);
Abstract
Single-layer and multi-layer light filters each having an array of light transmissive beads provide substantially independent and simultaneously optimized control of optical properties such as gain, contrast, transmittance, dispersion, and ambient light rejection using additional light transmissive layers. Such light filters can include light transmissive layers defining a lens curved over a plurality of the beads for effecting greater dispersion of image light horizontally or vertically, and conformal layers defining a lens curved over individual beads for increasing an effective radius of curvature of such beads. Additional pluralities of smaller beads are included in interstitial gaps in an array of larger beads for improving transmittance of some embodiments of light filters of the present invention. Light filters of the present invention are beneficially used as rear projection screens and light diffusers, and are ideal for use in or with flat-panel displays and the like.