US4314742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance cooled laser mirror
Assignee: RTX Corp
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Filing: 1980-06-02
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Granted: 1982-02-09
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Expires: 2000-06-02
Abstract
Abstract A high power laser mirror is described with minimized heat distortion. The mirror contains a multiplate heat exchanger with a criss-cross channel cooling pattern which significantly increases heat transfer coefficient of the mirror. Mirrors according to the present invention have heat transfer coefficients of up to 40,000.
Inventors
- 👤 John A. Dye
- 👤 Peter E. Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:10
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28F3/00; F28F3/12; G; G02; G02B; G02B5/00; G02B5/08; G02B7/00; G02B7/18; G02B7/181; G02B7/1815
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A high power, cooled, laser mirror comprising: a mirror surface; a heat exchanger in heat transfer communication with the mirror surface; the mirror surface and the heat exchanger supported on a mirror substrate; wherein the heat exchanger contains fluid cooling channels formed by, in combination, the opposing cooling channels of a first plate and second plate, the cooling channels in each plate being angularly offset with respect to the nearest adjacent cooling channel of the opposing plate thereby forming a criss-cross cooling channel pattern and the opposing, angularly offset cooling channels disposed in direct fluid flow communication with each other.
Claim 2
Dependent Claim
100 words
A high power, cooled, laser mirror comprising: a mirror surface; a heat exchanger in heat transfer communication with the mirror surface; the mirror surface and the heat exchanger supported on a mirror substrate; wherein the heat exchanger contains fluid cooling channels formed by, in combination, the opposing cooling channels of a first plate and second plate, the cooling channels in each plate being angularly offset with respect to the nearest adjacent cooling channel of the opposing plate thereby forming a criss-cross cooling channel pattern and the opposing, angularly offset cooling channels disposed in direct fluid flow communication with each other.
Claim 3
Dependent Claim
114 words
A high power, cooled, laser mirror comprising: a mirror surface; a heat exchanger in heat transfer communication with the mirror surface; the mirror surface and the heat exchanger supported on a mirror substrate; wherein the heat exchanger contains fluid cooling channels formed by, in combination, the opposing cooling channels of a first plate and second plate, the cooling channels in each plate being angularly offset with respect to the nearest adjacent cooling channel of the opposing plate thereby forming a criss-cross cooling channel pattern and containing an intervening heat conductive fluid smearing layer between the first and second plates preventing direct fluid flow communication between the cooling channels of the first and second plates.
Claim 4
Dependent Claim
114 words
A high power, cooled, laser mirror comprising: a mirror surface; a heat exchanger in heat transfer communication with the mirror surface; the mirror surface and the heat exchanger supported on a mirror substrate; wherein the heat exchanger contains fluid cooling channels formed by, in combination, the opposing cooling channels of a first plate and second plate, the cooling channels in each plate being angularly offset with respect to the nearest adjacent cooling channel of the opposing plate thereby forming a criss-cross cooling channel pattern and containing an intervening heat conductive fluid smearing layer between the first and second plates preventing direct fluid flow communication between the cooling channels of the first and second plates.
Claim 5
Dependent Claim
19 words
The laser mirror of claims 1, or 2 having a cooling coefficient of up to 40,000 BTU/hr/ft 2 /°F.
Claim 6
Dependent Claim
18 words
The laser mirror of claims 1, or 2 wherein the cooling channels in each plate are substantially parallel.
Claim 7
Dependent Claim
21 words
The laser mirror of claims 1, or 2 wherein the cooling channels in each plate are in a substantially spiral pattern.
Claim 8
Dependent Claim
16 words
The laser mirror of claim 5 wherein the channels of the spiral pattern are substantially parallel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |