Patent US3204845A successfully refreshed from Google Patents.
Patent US4237183A successfully refreshed from Google Patents.
US4237183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the surface treatment of a synthetic resin lens and the product thereof
Assignee: Ulvac Inc
•
Filing: 1978-04-07
•
Granted: 1980-12-02
•
Expires: 1998-04-07
Abstract
Abstract A process for the surface treatment of a synthetic resin lens comprising applying to the surface of a lens body made of synthetic resin such as allyl resin or the like a coating film of glass by a high-vacuum electric-field vapor deposition treatment. The glass coated lens body may then be formed with an anti-reflection coating film of magnesium fluoride or the like, also by a high-vacuum electric-field vapor deposition treatment.
Inventors
- 👤 Junichi Fujiwara
- 👤 Kazuo Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:34
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/10; B; B29; B29D; B29D11/00; B29D11/00009; B29D11/0073; B29D11/00865; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C23C14/22; C23C14/24; C23C14/32; G; G02; G02B; G02B1/00; G02B1/10; G02B1/18; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/938; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/269; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A process for the surface treatment of a synthetic resin lens comprising applying to the surface of a lens body made of synthetic resin a coating film of glass by a high-vacuum electric-field vapor deposition treatment including the steps of mounting the resin lens body in a treating chamber, introducing an evaporation source in the chamber, evacuating the chamber to a comparatively high vacuum of about from 1×10 -4 to 2×10 -5 torr and generating between the lens body and the evaporation source an electric field of about 50 to 100 volts/cm, the evaporation source being formed as a crucible containing the glass with an electron gun for irradiation thereof.
Claim 2
Dependent Claim
110 words
A process for the surface treatment of a synthetic resin lens comprising applying to the surface of a lens body made of synthetic resin a coating film of glass by a high-vacuum electric-field vapor deposition treatment including the steps of mounting the resin lens body in a treating chamber, introducing an evaporation source in the chamber, evacuating the chamber to a comparatively high vacuum of about from 1×10 -4 to 2×10 -5 torr and generating between the lens body and the evaporation source an electric field of about 50 to 100 volts/cm, the evaporation source being formed as a crucible containing the glass with an electron gun for irradiation thereof.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1 comprising applying to the glass-coated lens body an anti-reflection coating film by the high-vacuum electric-field vapor deposition treatment.
Claim 4
Dependent Claim
38 words
A process as claimed in claim 2 comprising applying a water-repelling substance on the lens body before the formation of the glass coating film and on the anti-reflection coating film after the formation of the anti-reflection coating film.
Claim 5
Dependent Claim
11 words
The product obtained by the process as claimed in claim 2.
Claim 6
Dependent Claim
18 words
The product as claimed in claim 4, wherein the glass coating has a thickness from 1 to 10μ.
Claim 7
Dependent Claim
19 words
The product as claimed in claim 4, wherein the anti-reflection coating film has a thickness of about 1500 Angstroms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |