Patent US4812016A successfully refreshed from Google Patents.
US4812016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antireflection film
Assignee: Panasonic Holdings Corp
•
Filing: 1987-08-14
•
Granted: 1989-03-14
•
Expires: 2007-08-14
Abstract
Abstract A method of operating a laser is disclosed which includes irradiating an optical component in an atmosphere of dry air or dry inert gas with a laser beam, wherein the optical component is provided with an antireflection film having at least a layer of calcogenide glass and a layer of potassium chloride or lead fluoride.
Inventors
- 👤 Takeo Miyata
- 👤 Takuhiro Ono
- 👤 Takashi Iwabuchi
- 👤 Masaru Ikedo
- 👤 Masafumi Watari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4207; G02B1/00; G02B1/10; G02B1/11; G02B1/113; G02B1/115; G02B6/02; G02B6/02052; G02B6/10; G02B6/241; G02B6/4296; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A method of operating a laser comprising the steps of: generating a laser beam; providing an optical component in an atmosphere of dry air or dry inert gas; irradiating said optical component with said laser beam, said optical component being provided with an optical film through which said laser beam passes, which comprises at least a layer of calcogenide glass and a layer of potassium chloride or lead fluoride.
Claim 2
Independent Claim
69 words
A method of operating a laser comprising the steps of: generating a laser beam; providing an optical component in an atmosphere of dry air or dry inert gas; irradiating said optical component with said laser beam, said optical component being provided with an optical film through which said laser beam passes, which comprises at least a layer of calcogenide glass and a layer of potassium chloride or lead fluoride.
Claim 3
Dependent Claim
16 words
A method as in claim 1 wherein said calcogenide glass is As 2 Se 3 .
Claim 4
Dependent Claim
32 words
A method as in claim 1 wherein said optical film comprises a layer of As 2 Se 3 , a layer of KCl and another layer of As 2 Se 3 .
Claim 5
Dependent Claim
21 words
A method as in claim 1 wherein the relative humidity of said dry air or dry inert gas is below 30%.
References Cited (Backward Citations)
US4043929A
Cited
US4092163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |