US4814232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for depositing laser mirror coatings
Assignee: Adaptive Optics Associates Inc
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Filing: 1987-03-25
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Granted: 1989-03-21
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Expires: 2007-03-25
Abstract
Abstract Methods are described for making a mirror useful in reflecting high energy laser radiation. The mirrors are comprised of an intermediate coating layer applied to the mirror substrate and a reflective coating layer applied to the intermediate layer. Plasma spray techniques are used to apply a readily polishable intermediate coating layer at high deposition rates.
Inventors
- 👤 John H. Bluege
- 👤 Curtis A. Sudduth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:31
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/0883; C; C23; C23C; C23C14/00; C23C14/02; C23C14/028; C23C16/00; C23C16/02; C23C16/0272; C23C4/00; C23C4/02; G02B5/0816; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
67 words
A method for making a mirror comprising a substrate, an intermediate layer, and a reflective layer thereover, comprising the steps of generating a plasma stream of substantially nonreactive gases, and injecting powder particles into the stream such that the particles are plasma sprayed onto the substrate to form the intermediate layer; polishing the intermediate layer; and applying the reflective layer over the polished plasma sprayed intermediate layer.
Claim 2
Independent Claim
67 words
A method for making a mirror comprising a substrate, an intermediate layer, and a reflective layer thereover, comprising the steps of generating a plasma stream of substantially nonreactive gases, and injecting powder particles into the stream such that the particles are plasma sprayed onto the substrate to form the intermediate layer; polishing the intermediate layer; and applying the reflective layer over the polished plasma sprayed intermediate layer.
Claim 3
Dependent Claim
16 words
The method of claim 1, wherein the intermediate layer is polished by mechanical or manual means.
Claim 4
Dependent Claim
27 words
The method of claim 1, wherein the intermediate layer is polished by melting and densifying the outer portion of the intermediate layer with a high energy beam.
Claim 5
Dependent Claim
23 words
The method of claim 1, wherein said step of spraying is performed to produce an intermediate layer having graded compositional or mechanical properties.
Claim 6
Dependent Claim
18 words
The method of claim 4, wherein said step of spraying is performed to produce a porous intermediate layer.
Claim 7
Independent Claim
74 words
A method for making a laser mirror having a substrate, an intermediate layer, and a reflective layer thereover, wherein the improvement comprises generating a plasma stream of substantially nonreactive gases and injecting powder particles into the stream such that the particles are plasma sprayed onto the substrate to form a layer which is at least about 10 microns thick wherein said layer has substantially the same composition as the composition of the powder particles.
Claim 8
Independent Claim
74 words
A method for making a laser mirror having a substrate, an intermediate layer, and a reflective layer thereover, wherein the improvement comprises generating a plasma stream of substantially nonreactive gases and injecting powder particles into the stream such that the particles are plasma sprayed onto the substrate to form a layer which is at least about 10 microns thick wherein said layer has substantially the same composition as the composition of the powder particles.
Claim 9
Dependent Claim
70 words
A laser mirror comprising a substrate, an intermediate layer over the substrate, and a reflective layer over the intermediate layer, wherein the intermediate layer is comprised of powder particles deposited onto the substrate by a process characterized by injecting said particles into a plasma stream of nonreactive gases, wherein said particles are heated in the stream and propelled by the stream onto the substrate surface where they cool and solidify.
Claim 10
Dependent Claim
70 words
A laser mirror comprising a substrate, an intermediate layer over the substrate, and a reflective layer over the intermediate layer, wherein the intermediate layer is comprised of powder particles deposited onto the substrate by a process characterized by injecting said particles into a plasma stream of nonreactive gases, wherein said particles are heated in the stream and propelled by the stream onto the substrate surface where they cool and solidify.
Claim 11
Dependent Claim
13 words
The mirror of claim 7, wherein the intermediate layer has a graded composition.
Claim 12
Dependent Claim
14 words
The mirror of claim 8, wherein the intermediate layer has a graded oxide content.
Claim 13
Dependent Claim
11 words
The mirror of claim 7, wherein the intermediate layer is porous.
Claim 14
Dependent Claim
12 words
The mirror of claim 10, wherein the intermediate layer porosity is graded.
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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |