Patent US4799780A successfully refreshed from Google Patents.
US4799780A
Expired / Lapsed
US
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Aberrated suppressor mirror
Assignee: Aerospace Corp
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Filing: 1987-01-23
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Granted: 1989-01-24
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Expires: 2007-01-23
Abstract
Abstract The invention described herein is a reverse wave suppressor mirror which is purposefully aberrated in order to decrease its sensitivity to tilt when compared to a conventional reverse wave suppressor mirror.
Inventors
- 👤 Jay M. Bernard
- 👤 Richard A. Chodzko
- 👤 Timothy J. Bixler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:26
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/06; H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/081; H01S3/083
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A reverse wave suppressor mirror apparatus, the improvement comprising mirror surface undulations of a periodic height and width wherein a reverse wave is effectively reinjected in the direction of a forward wave of the apparatus over a wide range of mirror tilt angles from approximately 50 microradians to at least 600 microradians.
Claim 2
Dependent Claim
52 words
A reverse wave suppressor mirror apparatus, the improvement comprising mirror surface undulations of a periodic height and width wherein a reverse wave is effectively reinjected in the direction of a forward wave of the apparatus over a wide range of mirror tilt angles from approximately 50 microradians to at least 600 microradians.
Claim 3
Dependent Claim
73 words
A reverse wave suppressor mirror apparatus for suppressing a reverse wave beam with a wavelength between 100 nanometers and 100 microns and a beam diameter between 1 millimeter and 1 meter, comprising: a mirror with a surface containing a plurality of undulations 1 to 10 wavelengths high and 0.01 to 0.5 beam diameter wide, wherein the undulations are of a periodic height and width and are placed across the surface of the mirror.
Claim 4
Dependent Claim
73 words
A reverse wave suppressor mirror apparatus for suppressing a reverse wave beam with a wavelength between 100 nanometers and 100 microns and a beam diameter between 1 millimeter and 1 meter, comprising: a mirror with a surface containing a plurality of undulations 1 to 10 wavelengths high and 0.01 to 0.5 beam diameter wide, wherein the undulations are of a periodic height and width and are placed across the surface of the mirror.
Claim 5
Dependent Claim
74 words
A reverse wave suppressor mirror apparatus for suppressing a reverse wave beam wherein the wavelength of the beam is about 3 microns and the beam diameter is about 2 centimeters comprising: a mirror with a surface containing a plurality of undulations between 3 to 10 microns high and between 1 to 5 millimeters wide, and wherein the undulations are of a periodic height and width and are placed across the surface of the mirror.
Claim 6
Dependent Claim
74 words
A reverse wave suppressor mirror apparatus for suppressing a reverse wave beam wherein the wavelength of the beam is about 3 microns and the beam diameter is about 2 centimeters comprising: a mirror with a surface containing a plurality of undulations between 3 to 10 microns high and between 1 to 5 millimeters wide, and wherein the undulations are of a periodic height and width and are placed across the surface of the mirror.
References Cited (Backward Citations)
US4492431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |