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.

Date of Patent:
May. 22, 2012

Filed:

Feb. 20, 2008
Applicants:

Alexey Vladimirovich Bratishchev, Moscow, RU;

Irina Vladimirovna Sergievskaya, Moscow, RU;

Maria Valerievna Potapova, Moscow, RU;

Yung-jun Park, Yongin-si, KR;

Sang-hyun Sohn, Yongin-si, KR;

Kirill Sergeevich Sokolov, Suwon-si, KR;

Sang-soo Lee, Seoul, KR;

Inventors:

Alexey Vladimirovich Bratishchev, Moscow, RU;

Irina Vladimirovna Sergievskaya, Moscow, RU;

Maria Valerievna Potapova, Moscow, RU;

Yung-jun Park, Yongin-si, KR;

Sang-hyun Sohn, Yongin-si, KR;

Kirill Sergeevich Sokolov, Suwon-si, KR;

Sang-soo Lee, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/28 (2006.01); G02B 9/62 (2006.01);
U.S. Cl.
CPC ...
Abstract

Provided is a projection optical system. The projection optical system includes: A projection optical system comprising: a first optical part that comprises at least one optical lens, and projects and displays light beams; a second optical part that comprises an image forming element and at least one optical lens, and emits incident light beams as light beams with images; and a third optical part that comprises a light source unit and a deflector that is located between the first and second optical parts, and directs light beams emitted from the light source unit to the second optical part and directs the light beams with images emitted from the second optical part to the first optical part.


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