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:
Feb. 13, 2001
Filed:
Apr. 01, 1999
Hoya Corporation, Tokyo, JP;
Abstract
Antireflection films are coated on the both sides of an optical lens by sputtering in a sputtering system. In a vacuum processing chamber (,) for performing the sputtering, a plurality of optical lens base materials are placed transversely on a substrate holder (,). The holder (,) is set rotatably in a vacuum atmosphere. The optical lens base materials are embedded to holes (,) formed in the holder (,), facing their concave surface up, by using ring-shaped holding tools (,). The height of the ring-shaped holding tool (,) is larger than the height of the edge of the optical lens base material (,) within the limits of 2 mm when the thickness of the lens edge of the optical lens base material is large. Part of the ring-shaped holding tool (,) which is put together with the upper surface of the optical lens base material (,) is tapered when the thickness of the lens edge of the optical lens base material is small.