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:
Jan. 13, 2004
Filed:
Sep. 28, 2000
Naotaro Nakata, Kyoto, JP;
Hironori Endo, Nagano, JP;
Other;
Abstract
The laser sensor comprises: a laser source ( ), a condenser lens ( ) for converging the light from the laser source, and a pin hole plate ( ) disposed adjacent to the condenser lens in the opposite side to the laser source, so that its pin hole ( ) is in the converging beam converged by the condenser lens. A light detecting portion is disposed at a converging portion of the light so as to face to the light beam passed the pin hole. The diameter of the pin hole is 0.4 to 0.7 mm. As a result, a small diameter beam having a constant diameter over a long section, which is longer than 100 mm, is obtained, so that the laser sensor can be used, irrespective to a small change of the detecting position. Further, the laser sensor allows to use a plastics lens as the condenser lens.