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:
Jul. 16, 2002
Filed:
Feb. 27, 2001
Moriyasu Shirayanagi, Saitama-ken, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The manufacturing system of spectacle lenses includes a computer, an input device to input data to the computer, a display and an aspherical surface processing machine. An operator input customer's data to the computer with the input device. The computer selects and determines a substantially common shape for front surfaces of the right and left lenses among predetermined shapes according to a selecting program based on the input specifications. The selecting program selects the common shape that stands midway between shapes of the front surfaces of the right and left lenses when these lenses are independently designed. The computer calculates shape data of the back surfaces, on the basis of the specifications and the selected shape of the front surfaces. Then the operator places the semifinished lens blank whose front surface agrees with the selected common shape on the machine. After the placement, the computer controls the machine to process (grind) the back surface of the semifinished lens blank based on the shape data.