US4930135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser oscillator device
Assignee: Fanuc Corp
•
Filing: 1988-04-28
•
Granted: 1990-05-29
•
Expires: 2008-04-28
Abstract
Abstract A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. Various interferences in the laser oscillator device are prevented to allow the device to produce a stable output. The laser oscillator device includes DC power supplies (DC12a, DC13a, DC13c, DC13d) and high-frequency power supplies (RF12b, RF13b, RF14b, RF15b) which are integrally coupled to prevent electromagnetic interference through cables for allowing stable laser oscillation and also to prevent various other interferences.
Inventors
- 👤 Norio Karube
- 👤 Akira Egawa
- 👤 Etsuo Yamazaki
- 👤 Nobuaki Iehisa
- 👤 Mitsuo Manabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:01
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0975
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A laser oscillator device for applying a high-frequency voltage to a plurality of discharge regions through a dielectric to produce a high-frequency discharge for laser pumping, comprising: DC power supply means for providing a DC voltage; and high-frequency power supply means for converting the DC voltage into a high-frequency voltage, the DC power supply coupled to each other to prevent electromagnetic and other interferences, thereby stabilizing said laser oscillator.
Claim 2
Dependent Claim
69 words
A laser oscillator device for applying a high-frequency voltage to a plurality of discharge regions through a dielectric to produce a high-frequency discharge for laser pumping, comprising: DC power supply means for providing a DC voltage; and high-frequency power supply means for converting the DC voltage into a high-frequency voltage, the DC power supply coupled to each other to prevent electromagnetic and other interferences, thereby stabilizing said laser oscillator.
Claim 3
Dependent Claim
26 words
A laser oscillator device according to claim 1, further including an impedance matching circuit disposed near said integrally coupled DC power supply and high-frequency power supply.
Claim 4
Dependent Claim
20 words
A laser oscillator device according to claim 2, wherein said impedance matching circuit includes a coil having an air core.
Claim 5
Dependent Claim
20 words
A laser oscillator device according to claim 2, wherein said impedance matching circuit includes a coil having a ferrite core.
Claim 6
Dependent Claim
14 words
A laser oscillator device according to claim 4, wherein said ferrite core is slidable.
Claim 7
Dependent Claim
28 words
A laser oscillator device according to claim 1 further comprising: discharge tubes connected to receive the high-frequency voltage; and a shield positioned to electromagnetically shield the discharge tubes.
Claim 8
Dependent Claim
15 words
A laser oscillator device according to claim 6, wherein said shield comprises a metal mesh.
Claim 9
Dependent Claim
25 words
A laser oscillator device according to claim 6, wherein said shield is positioned in a plane perpendicular to an axial direction of the discharge times.
Claim 10
Dependent Claim
21 words
A laser oscillator device according to claim 6, wherein said shield comprises a shield metal plate disposed between the discharge tubes.
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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |