US3698790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized optical systems
Assignee: Thales Optronics Ltd
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Filing: 1971-08-31
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Granted: 1972-10-17
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Expires: 1991-08-31
Abstract
Abstract A stabilized optical system comprising a servo-stabilized platform mounted on a support for rotation about a first axis, an objective system secured to said platform, and a mirror mounted on said platform for rotation about said first axis, the reflecting surface of said mirror containing said first axis, the objective system being so located that the focal point thereof lies on said reflecting surface, and the first axis passing through said focal point, and a driving connection between the mirror and the platform whereby the angular movement of the mirror is related to that of the objective system so that a light beam received at said objective system is projected by said mirror along a second axis which is fixed in position with respect to the support.
Inventors
- 👤 Peter John Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:55
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/644; G03; G03B; G03B15/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A stabilized optical system comprising a servo-stabilized platform mounted on a support for rotation about a first axis, an objective system secured to said platform, and a mirror mounted on said platform for rotation about said first axis, the reflecting surface of said mirror containing said first axis, the objective system being so located that the focal point thereof lies on said reflecting surface and the first axis passing through said focal point, and a driving connection between the mirror and the platform whereby the angular movement of the mirror is related to that of the objective system so that a light beam received at said objective system is projected by said mirror along a second axis which is fixed in position with respect to the support.
Claim 2
Dependent Claim
127 words
A stabilized optical system comprising a servo-stabilized platform mounted on a support for rotation about a first axis, an objective system secured to said platform, and a mirror mounted on said platform for rotation about said first axis, the reflecting surface of said mirror containing said first axis, the objective system being so located that the focal point thereof lies on said reflecting surface and the first axis passing through said focal point, and a driving connection between the mirror and the platform whereby the angular movement of the mirror is related to that of the objective system so that a light beam received at said objective system is projected by said mirror along a second axis which is fixed in position with respect to the support.
Claim 3
Dependent Claim
36 words
An optical system according to claim 1, wherein said support is the outer member of a gimbal and said first axis is the inner axis of said gimbal, the gimbal being rotatable about its outer axis.
Claim 4
Dependent Claim
18 words
An optical system according to claim 1, wherein the projected light beam is received by a camera tube.
Claim 5
Dependent Claim
27 words
An optical system according to claim 3, wherein the camera tube is rotatable by servo-motors to compensate for rotation of the light beam in the projection system.
Claim 6
Dependent Claim
16 words
An optical system according to claim 1, wherein the objective system is a Cassegrainian mirror system.
Claim 7
Dependent Claim
29 words
An optical system according to claim 1, including means for separating visible light and laser light when a bundle of light beams are received which includes a laser signal.
Claim 8
Dependent Claim
32 words
An optical system according to claim 6, wherein the light separation means is a dichroic mirror used as the second objective mirror of a Cassegrainian mirror system which forms the objective system.
Claim 9
Dependent Claim
51 words
An optical system according to claim 1, including a laser transmitting device which transmits a laser beam through a projection lens system, part of which is mounted on said platform and thereby projects a laser beam parallel with or co-linear with the rays of incident light received at the objective system.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |