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:
Jun. 09, 2009
Filed:
Jun. 17, 2004
Applicants:
Ching-chin Wu, Hsinchu, TW;
Ying-tsung LU, Hsinchu, TW;
Inventors:
Ching-Chin Wu, Hsinchu, TW;
Ying-Tsung Lu, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/26 (2006.01); G02B 5/18 (2006.01); G02B 27/42 (2006.01); G02B 21/22 (2006.01); G03B 21/60 (2006.01); G02B 27/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A virtual input element image projection apparatus couples a suitable lens and an optical element to increase the diverging angle of a virtual input element image or generate a plurality of portions of the virtual input element image that are coupled to form the complete virtual input element image without reducing diffraction efficiency. The projection distance for generating the virtual input element image may also be shortened.