US4361383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam directional deviation and noise stabilization device
Assignee: United States Department of the Navy
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Filing: 1980-08-22
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Granted: 1982-11-30
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Expires: 2000-08-22
Abstract
Abstract A laser beam directional deviation and noise stabilization device is disclosed as incorporating a laser which broadcast a monochromatic laser light beam along a predetermined optical path, and a plurality of optical elements which eliminate from the laser light beam any beam wander, and power level fluctuations inherent within the laser light beam.
Inventors
- 👤 Robert K. McMahan, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
199 words
A laser beam directional deviation and noise stabilization device comprising, in combination: means for projecting a monochromatic first light beam along a predetermined light path, said monochromatic first light beam having a predetermined beam diameter; means spatially disposed from said first light beam projecting means on said predetermined light path for collimating said monochromatic first light beam so as to form a collimated monochromatic second light beam, said collimated monochromatic second light beam having removed therefrom any beam directional deviation inherent within said monochromatic first light beam; means spatially disposed from said collimating means on said predetermined light path for reconstructing said collimated monochromatic second light beam so as to form a monochromatic third light beam, said monochromatic third light beam having a beam diameter the same as the beam diameter of said monochromatic first light beam without the beam directional deviations inherent within said monochromatic first light beam; and stabilizing means spatially disposed from said reconstructing means on said predetermined light path for maintaining the output power of said monochromatic third light beam at a constant value by eliminating from said monochromatic third light beam any power level deviations and noise inherent within said monochromatic third light beam.
Claim 2
Dependent Claim
199 words
A laser beam directional deviation and noise stabilization device comprising, in combination: means for projecting a monochromatic first light beam along a predetermined light path, said monochromatic first light beam having a predetermined beam diameter; means spatially disposed from said first light beam projecting means on said predetermined light path for collimating said monochromatic first light beam so as to form a collimated monochromatic second light beam, said collimated monochromatic second light beam having removed therefrom any beam directional deviation inherent within said monochromatic first light beam; means spatially disposed from said collimating means on said predetermined light path for reconstructing said collimated monochromatic second light beam so as to form a monochromatic third light beam, said monochromatic third light beam having a beam diameter the same as the beam diameter of said monochromatic first light beam without the beam directional deviations inherent within said monochromatic first light beam; and stabilizing means spatially disposed from said reconstructing means on said predetermined light path for maintaining the output power of said monochromatic third light beam at a constant value by eliminating from said monochromatic third light beam any power level deviations and noise inherent within said monochromatic third light beam.
Claim 3
Dependent Claim
16 words
The device according to claim 1, wherein said first light beam projecting means comprises a laser.
Claim 4
Dependent Claim
15 words
The device according to claim 1, wherein said collimating means comprises a spatially filtered collimator.
Claim 5
Dependent Claim
14 words
The device according to claim 1, wherein said reconstructing means comprises a Galilean collimator.
Claim 6
Dependent Claim
17 words
The device according to claim 1, wherein said stabilizing means comprises a broadband electro-optic feedback loop servomechanism.
Claim 7
Dependent Claim
29 words
The device according to claim 1, further characterized by means effectively connected to each of the elements thereof for the mounting and supporting thereof in predetermined relative dispositions respectively.
Claim 8
Dependent Claim
45 words
The device according to claim 1, further characterized by: an acousto-optic modulator spatially disposed from said stabilizing means on said predetermined light path, said acousto-optic modulator having an input; and a video signal generator having an output connected to the input of said acousto-optic modulator.
Claim 9
Independent Claim
94 words
An apparatus having a plurality of optical elements disposed along a predetermined optical path for removing from a monochromatic laser light beam broadcast along said predetermined optical light path any directional deviation inherent therein, and for stabilizing the output power of said monochromatic laser light beam comprising, in combination: a spatially filtered collimator disposed on said predetermined optical path; a Galilean collimator spatially disposed downstream from said spatially filtered collimator on said predetermined optical path; and a broadband electro-optic feedback loop servomechanism spatially disposed downstream from said Galilean collimator on said predetermined optical path.
Claim 10
Independent Claim
94 words
An apparatus having a plurality of optical elements disposed along a predetermined optical path for removing from a monochromatic laser light beam broadcast along said predetermined optical light path any directional deviation inherent therein, and for stabilizing the output power of said monochromatic laser light beam comprising, in combination: a spatially filtered collimator disposed on said predetermined optical path; a Galilean collimator spatially disposed downstream from said spatially filtered collimator on said predetermined optical path; and a broadband electro-optic feedback loop servomechanism spatially disposed downstream from said Galilean collimator on said predetermined optical path.
Claim 11
Dependent Claim
35 words
The apparatus of claim 8 further characterized by a laser spatially disposed upstream from said spatially filtered collimator on said predetermined optical path for broadcasting said monochromatic laser light beam on said predetermined optical path.
Claim 12
Dependent Claim
22 words
The apparatus of claim 8 further characterized by a mounting and support apparatus effectively connected to each of the optical elements thereof.
Claim 13
Dependent Claim
43 words
The apparatus of claim 8 further characterized by: an acousto-optic modulator spatially disposed downstream from said broadband electro-optic feedback loop servomechanism, said acousto-optic modulator having an input; and a video signal generator having an input connected to the output of said acousto-optic modulator.
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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |