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:
Apr. 01, 2008
Filed:
Dec. 28, 2006
Applicant:
Makoto Ogusu, Shimotsuke, JP;
Inventor:
Makoto Ogusu, Shimotsuke, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 27/54 (2006.01); G03B 27/72 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor unit includes a substrate that has a first mark, and a second mark used to specify a position of the first mark, a sensor for detecting light that has transmitted through the first mark and the substrate, and a light shielding portion, provided between the second mark and the sensor, for shielding the light from the second mark against the sensor.