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:
Oct. 25, 2011
Filed:
Nov. 29, 2006
Applicant:
Yasutaka Katayama, Tokyo, JP;
Inventor:
Yasutaka Katayama, Tokyo, JP;
Assignee:
Kabushiki Kaisha Topcon, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 40/14 (2006.01); G01C 21/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A level sensor, i.e., a light receiving section (X) having multiple light receiving elements (PDXto PDXn) arranged in parallel. In the level sensor, each two adjacent output terminals of the light receiving elements (PDXto PDXn) are connected by one of resistors (RXto RXn).