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:
Sep. 21, 2010
Filed:
Sep. 29, 2008
Bily Wang, Hsin Chu, TW;
Kuei-pao Chen, Hsin Chu, TW;
Chih-ming Wang, Hsinchu, TW;
Jui-wen Pan, Sinyi Township, Nantou County, TW;
Bily Wang, Hsin Chu, TW;
Kuei-Pao Chen, Hsin Chu, TW;
Chih-Ming Wang, Hsinchu, TW;
Jui-Wen Pan, Sinyi Township, Nantou County, TW;
Youngtek Electronics Corporation, Hsinchu, TW;
Abstract
An optical object distance simulation device for reducing total optical path includes: a lens, an achromatic lens set, a first image lens, and a second image lens. The achromatic lens set disposes beside one side of the lens, the first image lens disposes beside one side of the achromatic lens set, and the second image lens disposes beside one side of the first image lens. The achromatic lens set is composed of a first lens and a second lens. The first lens is a double-concave lens. The second lens is a double-convex lens. One concave face of the double-concave tightly contacts with one convex face of the double-convex lens. Therefore, the lens, the achromatic lens set, the first image lens, and the second image lens match with each other in order to simulate real object distance for reducing an object distance between a test camera lens and a corresponding chart.