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. 21, 2005
Filed:
Aug. 29, 2000
Norbert Kleiner, Scottsdale, AZ (US);
Diana C. Chen, Gilbert, AZ (US);
James W. Bishop, Jr., Chandler, AZ (US);
Norbert Kleiner, Scottsdale, AZ (US);
Diana C. Chen, Gilbert, AZ (US);
James W. Bishop, Jr., Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An optical wireless communications system () comprises a server or transceiver hub () transmitting and/or receiving optical communications with geographically dispersed subscriber units () via optical beams. The transceiver hub () transmits a beam pattern that has an efficient, rectangular, flat-topped far field optical profile, thus permitting less complex and less expensive transceiver equipment to be employed in the transceiver hub () and in the subscriber units (). In one embodiment, the transceiver hub () comprises an optical source (, FIG.), an asymmetrical lens such as a cylindrical lens (, FIG.), and a diffraction element such as a diffractive phase plate (, FIG.). Various methods of shaping an optical transmission profile are also described.