Patent US3854800A successfully refreshed from Google Patents.
US3854800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting device construction
Assignee: RTX Corp
•
Filing: 1973-01-26
•
Granted: 1974-12-17
•
Expires: 1993-01-26
Abstract
Abstract A laser mirror is constructed to provide a reflecting surface having a minimum amount of distortion while it is reflecting a high-power high-quality laser beam. The mirror is constructed having a backing plate made of a vitreous ceramic which has a very low coefficient of thermal expansion and a stiffness comparable to many metals. The reflecting surface is formed on a heat exchanger plate means which is bonded to said vitreous ceramic and has a manifold on each end. A coolant is passed through said heat exchanger plate means to reduce internal thermal response. The heat exchanger plate means can be formed from two preformed metal plates or one metal plate with a second plate being formed by plating. The invention herein described was made in the course of or under a contract or subcontract thereunder with the Department of the Air Force.
Inventors
- 👤 J Dye
- 👤 J Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:25
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08059; G; G02; G02B; G02B7/00; G02B7/18; G02B7/181; G02B7/1815
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
212 words
A laser mirror including means for reflecting a high-power high-quality beam while maintaining a high quality, said means including a face plate, a closure plate fixed thereto, one of said plates having a plurality of grooves therein facing the other plate, one of said plates having a first slot connecting the grooves at one end, one of said plates having a second slot connecting the grooves at the other end, a first manifold connected to said plate containing said first slot for directing a coolant to said first slot, said first manifold extending away from said plate to which it is connected, a second manifold connected to said plate containing said second slot for directing a coolant away from said second slot, said second manifold extending away from said plate to which it is connected, a backing member being located between said first and second manifolds, said backing member having a flat surface, said closure plate having a bottom surface bonded to said flat surface of said backing member, said backing member having mounting means fixed thereto, said first and second manifolds extending away from said closure plate in a cantilevered manner, said manifolds being spaced from the sides of the backing member, a reflecting surface being located on said face plate.
Claim 2
Dependent Claim
212 words
A laser mirror including means for reflecting a high-power high-quality beam while maintaining a high quality, said means including a face plate, a closure plate fixed thereto, one of said plates having a plurality of grooves therein facing the other plate, one of said plates having a first slot connecting the grooves at one end, one of said plates having a second slot connecting the grooves at the other end, a first manifold connected to said plate containing said first slot for directing a coolant to said first slot, said first manifold extending away from said plate to which it is connected, a second manifold connected to said plate containing said second slot for directing a coolant away from said second slot, said second manifold extending away from said plate to which it is connected, a backing member being located between said first and second manifolds, said backing member having a flat surface, said closure plate having a bottom surface bonded to said flat surface of said backing member, said backing member having mounting means fixed thereto, said first and second manifolds extending away from said closure plate in a cantilevered manner, said manifolds being spaced from the sides of the backing member, a reflecting surface being located on said face plate.
Claim 3
Dependent Claim
32 words
A laser mirror as set forth in claim 1 wherein the backing member is formed of a vitreous ceramic, providing a stiff backing member having essentially a zero coefficient of thermal expansion.
Claim 4
Dependent Claim
30 words
A laser mirror as set forth in claim 1 wherein the bottom surface of said closure plate is bonded by an epoxy to the flat surface of the backing member.
References Cited (Backward Citations)
US2425022A
Cited
US3713728A
Cited
US3683297A
Cited
US3645608A
Cited
US3637296A
Cited
US3741858A
Cited
US3747771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |