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:
Nov. 11, 2003
Filed:
Dec. 21, 2001
Waqidi Falicoff, San Diego, CA (US);
Juan C. Miñano, Madrid, ES;
Yong Qiao, Acton, MA (US);
Roberto Alvarez, South Pasadena, CA (US);
Light Prescriptions Innovators, LLC., Irvine, CA (US);
Abstract
Optical transformer devices described herein provide a variety of area output patterns from a small light source ( ). A light ejector ( ) is described for transversely ejecting light injected by a light source, including a plurality of partially reflective interfaces ( ) arranged along a central axis ( ), the interfaces arranged so that light injected by the light source travels through each of the interfaces, the reflected light providing an area light output of the light reflected. The interfaces may utilize Fresnel reflectance or may comprise metallic or dielectric coatings. A variety of embodiments are described, such as a cylindrical configuration, a rectangular block configuration, or an N-sided polygonal configuration. In some embodiments a turning reflector ( ) and polarization retarder ( ) are provided to reverse the direction of light and rotate polarization on the side opposite the light source. In one embodiment, a stripe ejector ( ) can be used to illuminate an LCD display.