Patent JPS642001A successfully refreshed from Google Patents.
JPS642001A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Optical refractive member coated with diamond-like carbon
Assignee: Idemitsu Petrochemical Co Ltd
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Filing: 1987-06-24
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Granted: —
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Expires: 2007-06-24
Abstract
Abstract PURPOSE: To improve mechanical strength, environmental resistance and durability by providing a thin film layer of diamond-like carbon on the surface. CONSTITUTION: The thin film of the diamond-like carbon is formed by a thin film forming method using methane, etc., as a reactive gas under plasma discharge on the surface of a glass lens or plastic lens which is an optical refractive member. The mechanical strength, environmental resistance and durability of the lens are enhanced by such surface coating without degrading the optical characteristic such as light transmittability. COPYRIGHT: (C)1989,JPO&Japio
Inventors
- 👤 Osamu Nakamura
- 👤 Tomio Kazahaya
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
—
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