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:
Dec. 11, 2000
Filed:
Oct. 28, 1998
Raymond J Beach, Livermore, CA (US);
Eric C Honea, Sunol, CA (US);
Camille Bibeau, Dublin, CA (US);
Scott Mitchell, Tracy, CA (US);
John Lang, Pleasanton, CA (US);
Dennis Maderas, Pleasanton, CA (US);
Joel Speth, San Ramon, CA (US);
Stephen A Payne, Castro Valley, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A hollow lensing duct to condense (intensify) light using a combination of focusing using a spherical or cylindrical lens followed by reflective waveguiding. The hollow duct tapers down from a wide input side to a narrow output side, with the input side consisting of a lens that may be coated with an antireflective coating for more efficient transmission into the duct. The inside surfaces of the hollow lens duct are appropriately coated to be reflective, preventing light from escaping by reflection as it travels along the duct (reflective waveguiding). The hollow duct has various applications for intensifying light, such as in the coupling of diode array pump light to solid state lasing materials.