US3906394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regulating distance between reflection mirrors of laser resonator
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1974-03-06
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Granted: 1975-09-16
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Expires: 1994-03-06
Abstract
Abstract The distance between reflection mirrors of a laser resonator is finely regulated over a wide range by driving a servo-motor upon an error signal produced due to a variation of frequency of a laser beam, converting the rotational movement of the servomotor to a linear movement by using a rotation screw means, converting the linear movement to a linear fine movement by using a lever means and transmitting the linear fine movement to one of the reflection mirrors by using a spring means which exerts a linear force on the one mirror upon the linear fine movement.
Inventors
- 👤 Keiichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:08
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/139; H01S3/05; H01S3/08; H01S3/086
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
An apparatus for regulating distance between reflection mirrors of a laser resonator, comprising in combination, a rotational means driven by an error signal obtainable from a frequency variation of laser beam, means for converting the rotational movement of said rotational means to a linear movement, means for reducing the linear movement of said converting means to a fine linear movement and means for transmitting the fine linear movement to one of said mirrors.
Claim 2
Independent Claim
73 words
An apparatus for regulating distance between reflection mirrors of a laser resonator, comprising in combination, a rotational means driven by an error signal obtainable from a frequency variation of laser beam, means for converting the rotational movement of said rotational means to a linear movement, means for reducing the linear movement of said converting means to a fine linear movement and means for transmitting the fine linear movement to one of said mirrors.
Claim 3
Dependent Claim
41 words
An apparatus as set forth in claim 1, wherein said rotational means is a servo-motor, said converting means is a rotational screw, said reducing means comprises at least one lever means and said transmitting means comprises a balance type spring device.
Claim 4
Dependent Claim
55 words
An apparatus as set forth in claim 2, wherein the transmission of the rotational movement of said servo-motor to said screw is performed through a circular plate fixedly mounted on the output shaft of said servo-motor and provided with notches on the periphery thereof and pins planted in said screw and inserted into said notches.
Claim 5
Dependent Claim
17 words
An apparatus as set forth in claim 2, wherein said servo-motor is supported by a gimbal mechanism.
References Cited (Backward Citations)
US3753150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |