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:
Dec. 18, 2008
Takahiro Watanabe, Itabashi-ku, JP;
Kenichi Watanabe, Itabashi-ku, JP;
Kenji Miyashita, Itabashi-ku, JP;
Masahiro Jinbo, Shinjuku-ku, JP;
Takahiro Watanabe, Itabashi-ku, JP;
Kenichi Watanabe, Itabashi-ku, JP;
Kenji Miyashita, Itabashi-ku, JP;
Masahiro Jinbo, Shinjuku-ku, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
An arithmetic control circuit () is configured to bring the measuring element () for a lens into contact with at least two points (measurement points P, P) of one of two refracting surfaces of the lens Lm held in the lens holder by controlling the measuring element shifter (driving motor), obtain the coordinates of the two points according to the detection signal from the position detector (linear scales), and obtain a curve value Cv of one refracting surface of the lens from the difference of the coordinates of the two points.