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:
Jan. 19, 2010
Filed:
Jul. 27, 2005
Kye-hoon Lee, Suwon-si, KR;
Dae-sik Kim, Suwon-si, KR;
Kye-hoon Lee, Suwon-si, KR;
Dae-sik Kim, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An illuminating unit with a compact design capable of improving collimating characteristics of beams emitted from a plurality of light sources positioned at different locations, and a projection-type image display apparatus employing the illuminating unit. The illuminating unit includes a base, a plurality of light sources to emit beams of different wavelength bands, and at least one color filter with a predetermined curvature to reflect one or more beams of predetermined wavelengths from among the beams emitted by the plurality of light sources such that the reflected one or more beams propagate in a first direction and to pass one or more remaining beams of other wavelength bands. The projection-type image display apparatus includes the illuminating unit, an optical integrator, an image-forming system, a beam splitter, and a projection lens.