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:
Sep. 18, 2007
Filed:
Mar. 07, 2005
Kuldeep Kumar Saxena, Singapore, SG;
Wee Sin Tan, Singapore, SG;
Peng Yam NG, Singapore, SG;
Sin Heng Lim, Singapore, SG;
Kuldeep Kumar Saxena, Singapore, SG;
Wee Sin Tan, Singapore, SG;
Peng Yam Ng, Singapore, SG;
Sin Heng Lim, Singapore, SG;
Avago Technologies ECBU IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A bi-curvature lens for diodes in an infrared wireless communication transceiver is disclosed. Devices having such a bi-curvature lens, such as a light emitting device, a light detecting device, and a transceiver are also disclosed. A method for designing such a lens, and a method for fabricating a device having such a lens are also disclosed. The bi-curvature lens disclosed has a bottom hemispherical portion and a top aspherical portion. Light emitting diodes and photo detectors used in conjunction with bi-curvature lenses display symmetrical radiation intensity profiles, in accordance with Infrared Data Association standards and protocols.