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:
Feb. 22, 2011
Filed:
Dec. 17, 2007
H. Yang Pang, San Jose, CA (US);
Murray K. Reed, Menlo Park, CA (US);
Alexander O. W. Wiessner, Santa Clara, CA (US);
R. Russel Austin, Cool, CA (US);
H. Yang Pang, San Jose, CA (US);
Murray K. Reed, Menlo Park, CA (US);
Alexander O. W. Wiessner, Santa Clara, CA (US);
R. Russel Austin, Cool, CA (US);
Coherent, Inc., Santa Clara, CA (US);
Abstract
An original laser-radiation beam having a symmetrical Mbut poor beam quality is sliced in one transverse axis, by a fanned-out stack of parallel transparent plates, into a plurality of beam slices. The beam-slices are also spread by the stack of plates in another transverse axis perpendicular to the first axis. A fanned-out stack of glass blocks aligns the spread beam-slices in the first axis to form what is effectively a single beam having an asymmetric M, with beam quality improved in one axis and degraded in the other compared with the original beam. The effective single beam is projected into a line of radiation by a cylindrical lens, or by a homogenizing projector including spaced apart cylindrical lens arrays followed by a spherical condenser lens.