JPS63214701A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Difficult-to-contaminate lens
Assignee: Nikon Corp
•
Filing: 1987-03-03
•
Granted: —
•
Expires: 2007-03-03
Abstract
Abstract PURPOSE:To obtain a water-repellent surface by providing the hard thin film of a specified material on an antireflection film. CONSTITUTION:A plastic lens 1 is coated with a polysiloxane-based hard layer 2, a reflecting film 3 is formed on the layer 2, and a hard thin carbon film 4 contg. small amts. of hydrogen and fluorine and having specified thickness is provided on the film 3. The surface is made water-repellent by the film 4, hence the yellowing by water is prevented, and dirt is hardly deposited on the lens.
Inventors
- 👤 Hiroyuki Sugimura
- 👤 博之 杉村
- 👤 Haruhiko Fujisawa
- 👤 晴彦 藤澤
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-31 21:42
CPC Classifications
—
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
JPS6388503A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.