Patent US3778361A successfully refreshed from Google Patents.
US3750049A
Expired / Lapsed
US
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Laser trimming tool
Assignee: Individual
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Filing: 1970-09-30
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Granted: 1973-07-31
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Expires: 1990-09-30
Abstract
Abstract A laser trimming tool includes a laser, means for directing the output beam from the laser onto the workpiece being trimmed, and a gas jet directed obliquely at the workpiece in the region of the intersection with the laser beam during the trimming operation. An improved Q-switch, forming an integral part of the laser cavity, is used to provide a pulsed beam output. To insure that the proper amount of the workpiece is trimmed, a fast response resistance level detector is used.
Inventors
- 👤 M Dowley
- 👤 W Mefferd
- 👤 R Rorden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/351; B23K26/14; B23K26/142; B23K26/1435; B23K26/1438; B23K26/1462; B23K26/1464; B23K26/147; H; H01; H01C; H01C17/00; H01C17/22; H01C17/24; H01C17/242; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/121
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
A Q-switch within the optical resonator cavity of a laser comprising: a. an optical assembly for focusing the laser beam and then recollimating the same within the optical resonator cavity comprising i. a reflector mirror forming a part of said optical resonator cavity, said mirror having a radius of curvature for focusing the laser beam within the resonator cavity, and ii. a single lens axially disposed adjacent to said reflector mirror within said resonator cavity, b. shutter means for periodically interrupting the laser beam at the focusing point between said single lens and said reflector mirror for Q-switching the laser output, c. said shutter means comprising a light-reflective motor-driven rotary chopper wheel located in a plane normal to the laser beam, said chopper wheel including a circumferentially extending peripheral portion through which are provided a plurality of spaced apart slots distributed around said peripheral portion, said peripheral portion forming an angle theta with the remaining part of said chopper wheel for deflecting the laser beam impinging thereon out of the resonator cavity, and wherein said chopper wheel is positioned so that the said slots go in and out of alignment with said laser beam.
Claim 2
Dependent Claim
194 words
A Q-switch within the optical resonator cavity of a laser comprising: a. an optical assembly for focusing the laser beam and then recollimating the same within the optical resonator cavity comprising i. a reflector mirror forming a part of said optical resonator cavity, said mirror having a radius of curvature for focusing the laser beam within the resonator cavity, and ii. a single lens axially disposed adjacent to said reflector mirror within said resonator cavity, b. shutter means for periodically interrupting the laser beam at the focusing point between said single lens and said reflector mirror for Q-switching the laser output, c. said shutter means comprising a light-reflective motor-driven rotary chopper wheel located in a plane normal to the laser beam, said chopper wheel including a circumferentially extending peripheral portion through which are provided a plurality of spaced apart slots distributed around said peripheral portion, said peripheral portion forming an angle theta with the remaining part of said chopper wheel for deflecting the laser beam impinging thereon out of the resonator cavity, and wherein said chopper wheel is positioned so that the said slots go in and out of alignment with said laser beam.
Claim 3
Dependent Claim
179 words
A Q-switch within the optical resonator cavity of a laser comprising: a. an optical assembly for focusing the laser beam and then re-collimating the same within the optical resonator cavity comprising i. a reflector mirror forming a part of said optical resonator cavity, said mirror having a radius of curvature for focusing the laser beam within the resonator cavity, and ii. a single lens axially disposed adjacent to said reflector mirror within said resonator cavity, b. shutter means for periodically interrupting the laser beam at the focusing point between said single lens and said reflector mirror for Q-switching the laser output, c. said shutter means comprising a light-reflective motor-driven rotary chopper wheel, said chooper wheel having a plurality of slots located around the periphery thereof, said chopper wheel being positioned so that said slots go in and out of alignment with said laser beam, and wherein said plurality of slots are located on a surface inclined from a plane normal to the direction of the laser beam for deflecting the laser beam impinging thereon out of the resonator cavity.
Claim 4
Dependent Claim
179 words
A Q-switch within the optical resonator cavity of a laser comprising: a. an optical assembly for focusing the laser beam and then re-collimating the same within the optical resonator cavity comprising i. a reflector mirror forming a part of said optical resonator cavity, said mirror having a radius of curvature for focusing the laser beam within the resonator cavity, and ii. a single lens axially disposed adjacent to said reflector mirror within said resonator cavity, b. shutter means for periodically interrupting the laser beam at the focusing point between said single lens and said reflector mirror for Q-switching the laser output, c. said shutter means comprising a light-reflective motor-driven rotary chopper wheel, said chooper wheel having a plurality of slots located around the periphery thereof, said chopper wheel being positioned so that said slots go in and out of alignment with said laser beam, and wherein said plurality of slots are located on a surface inclined from a plane normal to the direction of the laser beam for deflecting the laser beam impinging thereon out of the resonator cavity.
References Cited (Backward Citations)
US3281712A
Cited
US3286193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |