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:
Apr. 13, 2010
Filed:
Nov. 21, 2005
Pavel Serafimovich, Suwon-si, KR;
Sungha Kim, Seoul, KR;
Byoungho Cheong, Seoul, KR;
Sangwhoe Dho, Suwon-si, KR;
Pavel Serafimovich, Suwon-si, KR;
Sungha Kim, Seoul, KR;
Byoungho Cheong, Seoul, KR;
Sangwhoe Dho, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
Provided are an illumination system and a projection TV employing the same. The illumination system includes: a laser light source including a plurality of lasers which emit laser beams including a plurality of beamlets; a first diffractive optical element which separates the laser beams according to wavelength and which focuses the separated beams onto different segments of a second refractive optical element; and the second diffractive optical element which focuses and superimposes a plurality of beamlets, of the laser beams transmitted by the first diffractive optical element, in order to spatially average the laser beams and to eliminate laser speckle.