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:
Sep. 08, 1998
Filed:
Jul. 12, 1996
Toshiaki Mizuno, Aichi, JP;
Ryoji Shibata, Aichi, JP;
Masahiko Kobayashi, Aichi, JP;
Yoshinori Matsuyama, Aichi, JP;
Hirokatsu Ohbayashi, Aichi, JP;
Masakazu Funakura, Aichi, JP;
Nidek Co., Ltd., Gamagori, JP;
Abstract
A subject lens is held by two chuck shafts, which are rotated synchronously by pulse motors during a grinding operation. Chamfering and other grinding wheels are mounted on a rotary shaft of a lens grinding part. A desired grinding wheel for each processing is selected by moving the rotary shaft vertically. In the case of rough processing, the rotary shaft is moved by a pulse motor toward the center of the chuck shafts based on lens frame shape data. In the case of chamfering, the rotary shaft is moved toward the center of the chuck shafts as well as vertically based on chamfering data. To produce part of the chamfering data, a lens measuring section measures the shapes of the front and rear surfaces of the subject lens.