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. 12, 2019
Filed:
Oct. 22, 2014
Applicant:
Lg Electronics Inc., Seoul, KR;
Inventors:
Assignee:
LG ELECTRONICS INC., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 9/31 (2006.01); G02B 26/10 (2006.01); G03B 21/20 (2006.01); G03B 33/12 (2006.01); G02B 5/04 (2006.01); G02B 27/30 (2006.01); G02B 27/14 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3129 (2013.01); G02B 26/10 (2013.01); G03B 21/2033 (2013.01); G03B 33/12 (2013.01); H04N 9/317 (2013.01); G02B 5/04 (2013.01); G02B 27/141 (2013.01); G02B 27/30 (2013.01);
Abstract
An image projection image for projecting an image on a screen includes a light source, a scanning mirror and a prism. The light source includes laser diodes for emitting beams of different wavelengths. The scanning mirror reflects the beams radiated from the light source and projects the reflected beams. The prism is disposed at the rear of the scanning mirror to decenter the beams via the scanning mirror based on the wavelengths. In the image projection apparatus, the laser diodes are fixed to be vertically spaced apart from a reference height, corresponding to the wavelengths of the beams.