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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.:

US 9703110 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Dec. 23, 2013

Optical system and image projection apparatus having the same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Jun Park, Seoul, KR;

Sangok Yeo, Seoul, KR;

Honglyeol Oh, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Bao-Luan Le

Int. Cl.
CPC ...
G02B 27/26 (2006.01); G03B 21/14 (2006.01); G02B 27/01 (2006.01); G03B 21/28 (2006.01); G02B 13/00 (2006.01); G02B 13/16 (2006.01); G02B 17/08 (2006.01);
U.S. Cl.
CPC ...
G02B 27/26 (2013.01); G02B 13/002 (2013.01); G02B 13/16 (2013.01); G02B 17/08 (2013.01); G02B 27/0101 (2013.01); G03B 21/14 (2013.01); G03B 21/28 (2013.01); G02B 2027/015 (2013.01); G02B 2027/0134 (2013.01);
Abstract

An image projection apparatus includes a light source for emitting a light bundle, a display element forming an image by using the light bundle, and a projection system having: a lens unit refracting the light bundle so as to magnify and project the image and including first and second aspheric lenses, which are spaced from each other and change the refraction of the light bundle, and at least one spherical lens disposed between the first and second aspheric lenses; and a mirror for reflecting, toward the outside, the light bundle delivered by the lens unit.

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Park, Jun. (2017). Optical system and image projection apparatus having the same (U.S. Patent No. 9703110). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9703110

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