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:
Aug. 04, 1998
Filed:
Apr. 05, 1996
Shinji Mizuhata, Kyoto, JP;
Hayami Hosokawa, Kyoto, JP;
Arata Nakamura, Osaka, JP;
Nobuharu Ishikawa, Kyoto, JP;
Hiroyuki Inoue, Kyoto, JP;
Satoru Shimokawa, Shiga, JP;
Masahiro Kurokawa, Osaka, JP;
Kohei Tomita, Kyoto, JP;
Norimasa Yamanaka, Kyoto, JP;
Omron Corporation, Kyoto, JP;
Abstract
Each of a detection sample object and a non-detection sample object is illuminated with S-polarization light, for instance. S-polarization light and P-polarization light reflected from each sample object are detected by different photodetecting elements. Glossiness values and light quantities of the detection and non-detection sample objects are judged based on detection outputs of the photodetecting elements, and a glossiness difference and a light quantity difference are calculated. An evaluation function having at least one of the glossiness and the light quantity as a variable is determined by using the glossiness difference and the light quantity difference. Thresholds for object discrimination are calculated based on evaluation function values of the detection and non-detection sample objects.