| US 7,339,735 B2 | ||
| Polarization recovery system for projection displays | ||
| Kenneth K. Li, Arcadia, Calif. (US) | ||
| Assigned to Wavien, Inc., Valencia, Calif. (US) | ||
| Filed on Apr. 28, 2006, as Appl. No. 11/414,755. | ||
| Application 11/414755 is a continuation of application No. 10/850467, filed on May 21, 2004, granted, now 7,092,159. | ||
| Application 10/850467 is a continuation of application No. 10/347522, filed on Jan. 21, 2003, granted, now 6,982,830. | ||
| Application 10/347522 is a continuation of application No. 09/814970, filed on Mar. 23, 2001, granted, now 6,587,269. | ||
| Claims priority of provisional application 60/246583, filed on Nov. 08, 2000. | ||
| Claims priority of provisional application 60/227312, filed on Aug. 24, 2000. | ||
| Prior Publication US 2006/0209409 A1, Sep. 21, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G02B 27/28 (2006.01); G02B 5/30 (2006.01) | ||
| U.S. Cl. 359—496 [359/494; 359/495; 349/9; 353/20] | 5 Claims |
| 1. A light engine comprising:
a beam splitter for splitting light from a source into two or more light components;
a light guide comprising:
at least a source branch for guiding light from the source to the beam splitter; and
at least first and second component branches for guiding the light components away from the beam splitter and to a projection
display system;
each of the source branch and the first and second component branches consisting of at least one straight light guide section
of rectangular cross-section and at least one light coupling element.
|