US3836236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror mount for high power lasers
Assignee: GTE Sylvania Inc
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Filing: 1972-11-24
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Granted: 1974-09-17
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Expires: 1992-11-24
Abstract
Abstract A mirror mount for a high power laser includes a liquid-cooled backing plate resiliently pressed against the fluid-covered back side of a mirror seated in the recess of a mounting ring. The mating surfaces of the backing plate and mirror are lapped or otherwise precisley formed with flat plane shapes and the thin fluid film between them improves thermal conductivity at the junction and prevents shear stress between mirror and plate. The backing plate is resiliently pressed against the mirror by a clamping ring through an O-ring. The portion of the backing plate through which the coolant passes is immediately adjacent to the portion of the mirror from which the incident laser beam is reflected so as to efficiently remove heat generated by mirror absorption of beam energy. The peripheral edges of the backing plate and mirror are loosely held in the mounting ring to accommodate thermal expansion and contraction of the parts without stress or distortion.
Inventors
- 👤 R Kirk
- 👤 F Moreno
- 👤 J Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/18; G02B7/181; G02B7/1815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
A reflector mounting assembly comprising a reflector having a circumferential edge and opposed surfaces extending transversely of the direction of light beam incidence thereon, an outer member surrounding said edge of said reflector and having an interior transverse dimension greater than the corresponding exterior dimension of the reflector whereby said reflector is expandable and contractible within and relative to said outer member, said member having an abutment engageable with the peripheral portion of one of said reflector surfaces and defining the position of the reflecting surface of the relfector, a cooling plate having a surface disposed in heat conducting relation adjacent to and substantially coextensive with and having the same shape as the other surface of the reflector, and means for yieldably axially forcing said plate against said other surface of the reflector whereby to firmly seat said one surface of the reflector against said abutment.
Claim 2
Dependent Claim
146 words
A reflector mounting assembly comprising a reflector having a circumferential edge and opposed surfaces extending transversely of the direction of light beam incidence thereon, an outer member surrounding said edge of said reflector and having an interior transverse dimension greater than the corresponding exterior dimension of the reflector whereby said reflector is expandable and contractible within and relative to said outer member, said member having an abutment engageable with the peripheral portion of one of said reflector surfaces and defining the position of the reflecting surface of the relfector, a cooling plate having a surface disposed in heat conducting relation adjacent to and substantially coextensive with and having the same shape as the other surface of the reflector, and means for yieldably axially forcing said plate against said other surface of the reflector whereby to firmly seat said one surface of the reflector against said abutment.
Claim 3
Dependent Claim
21 words
The mounting assembly according to claim 1 with an antifriction film between the adjacent surfaces of the reflector and cooling plate.
Claim 4
Dependent Claim
14 words
The mounting assembly according to claim 2 in which said adjacent surfaces are plane.
Claim 5
Dependent Claim
35 words
The mounting assembly according to claim 1 in which said last named means comprises a clamp secured to said outer member, and an O-ring disposed between said clamp and the rear surface of said reflector.
Claim 6
Dependent Claim
121 words
An assembly for mounting a mirror on the housing of laser apparatus comprising an annular member secured to said housing, said member having a lip defining a reference position, a mirror disposed within said member in radially movable relation thereto and in abutment with said lip and having a reflecting surface in said reference position, said mirror having a plane back surface opposite said reflecting surface, a cooling plate having a plane surface adjacent to said back surface of said mirror, means for clamping said plate against said mirror for seating the latter against said lip, and lubricant means between adjacent surfaces of said cooling plate and mirror whereby to permit stressless differential radial thermal expansion of the plate and mirror.
Claim 7
Dependent Claim
121 words
An assembly for mounting a mirror on the housing of laser apparatus comprising an annular member secured to said housing, said member having a lip defining a reference position, a mirror disposed within said member in radially movable relation thereto and in abutment with said lip and having a reflecting surface in said reference position, said mirror having a plane back surface opposite said reflecting surface, a cooling plate having a plane surface adjacent to said back surface of said mirror, means for clamping said plate against said mirror for seating the latter against said lip, and lubricant means between adjacent surfaces of said cooling plate and mirror whereby to permit stressless differential radial thermal expansion of the plate and mirror.
Claim 8
Dependent Claim
18 words
The assembly according to claim 5 in which said lubricant means comprises a film of low viscosity fluid.
Claim 9
Dependent Claim
30 words
The assembly according to claim 5 in which said clamp means comprises a ring secured to said member, and a resilient seal element between said ring and said cooling plate.
References Cited (Backward Citations)
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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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |