US4384759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic corrector element
Assignee: United States Department of the Navy
•
Filing: 1980-06-03
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Granted: 1983-05-24
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Expires: 2000-06-03
Abstract
Abstract One or more holographic optical elements are placed within an aerodynamic front enclosure. Each element redirects a transmitted electro-magnetic wave to a radiation detector. The holographic optical elements correct by diffraction the aberration in a wavefront caused by transmission through the aerodynamic frontal enclosure. Each holographic optical element corrects for wavefronts coming from different directions.
Inventors
- 👤 Ronald A. Ferrante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:03
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
In an aerodynamic frontal enclosure with an ogive shape that transmits light the improvement comprising: a shell of holographic material divided into a plurality of sections placed within said ogive shaped frontal enclosure such that it forms a lining to said ogive shaped frontal enclosure for reshaping light transmitted through said frontal enclosure from a field-of-view limited to a direction unique to each section, said plurality of sections having one section centered at the top of said ogive shaped frontal enclosure and the remaining sections arranged to form sectors in at least one concentric ring about said centered section; a detector within said liner shell of holographic material for measuring said reshaped transmitted light; and a gimballed support attached to said detector for pointing the detector at each section, such that said detector determines whether predetermined reshaped light has been transmitted by any of said sections.
Claim 2
Dependent Claim
146 words
In an aerodynamic frontal enclosure with an ogive shape that transmits light the improvement comprising: a shell of holographic material divided into a plurality of sections placed within said ogive shaped frontal enclosure such that it forms a lining to said ogive shaped frontal enclosure for reshaping light transmitted through said frontal enclosure from a field-of-view limited to a direction unique to each section, said plurality of sections having one section centered at the top of said ogive shaped frontal enclosure and the remaining sections arranged to form sectors in at least one concentric ring about said centered section; a detector within said liner shell of holographic material for measuring said reshaped transmitted light; and a gimballed support attached to said detector for pointing the detector at each section, such that said detector determines whether predetermined reshaped light has been transmitted by any of said sections.
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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) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |