US4247829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silent discharge type gas laser device
Assignee: Mitsubishi Electric Corp
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Filing: 1978-09-27
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Granted: 1981-01-27
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Expires: 1998-09-27
Abstract
Abstract A silent discharge type gas laser device comprises a high voltage side electrode and a low voltage side electrode which are disposed through a discharge space wherein substantial surface area of at least one of the electrodes is covered with a dielectric and an equivalent diameter of the covered dielectric is less than several times the length of the discharge space.
Inventors
- 👤 Shigenori Yagi
- 👤 Norikazu Tabata
- 👤 Shuji Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/038; H01S3/036
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
In a silent discharge type gas laser device comprising a high voltage side electrode and a low voltage side electrode with the space therebetween forming a discharging space, the improvement being that all of the surface area of at least one of the electrodes is covered with a dielectric and an equivalent diameter of the electrode covered with said dielectric is in a range up to 3 times the length of the discharge space.
Claim 2
Dependent Claim
74 words
In a silent discharge type gas laser device comprising a high voltage side electrode and a low voltage side electrode with the space therebetween forming a discharging space, the improvement being that all of the surface area of at least one of the electrodes is covered with a dielectric and an equivalent diameter of the electrode covered with said dielectric is in a range up to 3 times the length of the discharge space.
Claim 3
Dependent Claim
42 words
A silent discharge type gas laser device according to claim 1 wherein at least one of the high voltage side electrode and the low voltage side electrode is formed by a plurality of electrodes whose whole surfaces are covered with the dielectric.
Claim 4
Dependent Claim
30 words
A silent discharge type gas laser device according to claim 2 wherein the plurality of electrodes are arranged in the flow path of a gas flow through said discharging space.
Claim 5
Dependent Claim
37 words
A silent discharge type gas laser device according to claim 2 wherein the plurality of electrodes are arranged with a specified space therebetween so as to pass a laser gas in the direction of the discharging space.
Claim 6
Dependent Claim
39 words
A silent discharge type gas laser device according to claim 4 wherein one of the high voltage side electrode and the low voltage side electrode is formed by a flat metallic plate whose front surface faces the discharging space.
Claim 7
Dependent Claim
67 words
A silent discharge type gas laser device according to claim 1, 2, 3 or 4 wherein one of the high voltage side electrode and the low voltage side electrode is formed by a flat net electrode in the for of a wire gauze whose front surface faces to the discharge space whereby a part of a laser gas is passed through the gauze into the discharging space.
Claim 8
Dependent Claim
66 words
A silent discharge type gas laser device according to claim 1, 2, 3 or 4 wherein one of the high voltage side electrode and the low voltage side electrode is formed by a flat metallic substrate having lattice or slits whose front surface faces to the discharge space whereby a part of a laser gas is passed through the lattice or slits into the discharging space.
References Cited (Backward Citations)
US3745481A
Cited
JPS516693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |