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. 12, 2005
Filed:
Aug. 21, 2003
Kun-ho Cho, Gyeonggi-do, KR;
Dae-sik Kim, Gyeonggi-do, KR;
Sungha Kim, Seoul, KR;
Heejoong Lee, Gyeonggi-do, KR;
Kun-ho Cho, Gyeonggi-do, KR;
Dae-sik Kim, Gyeonggi-do, KR;
Sungha Kim, Seoul, KR;
HeeJoong Lee, Gyeonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A highly efficient projection system, including a light source, a scrolling unit, a color separation hologram, a light valve, and a projection lens unit. The scrolling unit includes spirally arranged cylinder lens cells to scroll/cycle incident beams while rotating. The color separation hologram separates a beam radiated from the light source into beams with different wavelengths. The light valve forms a color image by turning on or off pixels according to an input image signal. The projection lens unit magnifies the image formed by the light valve and projects the magnified image toward a screen. In this projection system three color beams from the light source are scrolled simultaneously to produce a picture, resulting in a highly light efficient projection system.