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:
Jul. 10, 2012

Filed:

Jan. 13, 2010
Applicants:

Sung-nan Chen, Hsinchu, TW;

Chin-yuan Cheng, Hsinchu, TW;

Inventors:

Sung-Nan Chen, Hsinchu, TW;

Chin-Yuan Cheng, Hsinchu, TW;

Assignee:

Young Optics Inc., Hsinchu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 3/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical engine including an illumination system, a beam splitting element, a second dichroic unit, and a light valve is provided. The illumination system provides a visible beam and an invisible beam. The beam splitting element is disposed in transmission paths of the visible and invisible beams. After the visible and invisible beams leave the beam splitting element, the optical axes of the visible and invisible beams are separated from each other. The second dichroic unit is disposed in the transmission paths of the visible and invisible beams from the beam splitting element. The visible beam passes through the second dichroic unit, and the invisible beam is reflected by the second dichroic unit. The light valve is disposed in the transmission path of the visible beam from the second dichroic unit and converts the visible beam into an image beam. The image beam passes through the second dichroic unit.


Find Patent Forward Citations

Chen, Sung-Nan. (2012). Optical engine having a beam splitting element comprising a first dichroic unit and an optical path turning unit disposed in transmission paths of a visible beam and an invisible beam (U.S. Patent No. 8217332). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8217332

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