US4494826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface deformation image device
Assignee: Individual
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Filing: 1979-12-31
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Granted: 1985-01-22
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Expires: 1999-12-31
Abstract
Abstract A device capable of spatially modulating a collimated read-out light beam with an input image is described. The most essential elements of the key unit in this device include a photoconducting layer, charged grille-structure, an elastomer, and a thin metal anode. Real-time and storage operation is possible.
Inventors
- 👤 James L. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:31
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/041; G02; G02B; G02B26/00; G02B26/08; G02B26/0816; G02B26/0825
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A surface deformation image device comprising a plurality of laminated layers; a first layer being a transparent supporting substrate; a second layer being a grille structure layer; a third layer being photoconducting layer in electrical contact with said grille structure layer; a fourth layer being an elastomer layer; a thin metal film coating layer on said elastomer layer; terminals being connected to said thin metal film layer and said grille structure layer such that electrical potential can be applied across said layers, excepting said first layer, causing selective declination of the elastomer layer and therefore the metal film coating, said elastomer layer relaxing in corresponding areas of said photoconductive layer which are struck by electromagnetic energy; an electrical switch; and said grille structure being made up of a plurality of lines connected to said electrical switch such that alternate lines are connected to given voltage polarity and the lines remaining may be switched to either similar or opposite voltage.
Claim 2
Dependent Claim
159 words
A surface deformation image device comprising a plurality of laminated layers; a first layer being a transparent supporting substrate; a second layer being a grille structure layer; a third layer being photoconducting layer in electrical contact with said grille structure layer; a fourth layer being an elastomer layer; a thin metal film coating layer on said elastomer layer; terminals being connected to said thin metal film layer and said grille structure layer such that electrical potential can be applied across said layers, excepting said first layer, causing selective declination of the elastomer layer and therefore the metal film coating, said elastomer layer relaxing in corresponding areas of said photoconductive layer which are struck by electromagnetic energy; an electrical switch; and said grille structure being made up of a plurality of lines connected to said electrical switch such that alternate lines are connected to given voltage polarity and the lines remaining may be switched to either similar or opposite voltage.
Claim 3
Dependent Claim
18 words
A device as set forth in claim 1 wherein said grille structure layer is inside said photoconductive layer.
Claim 4
Dependent Claim
32 words
A device as set forth in claim 1 or 2 wherein said photoconductor layer is of the type which requires high electric field for significant photoconduction such as CdS powder in plastic.
Claim 5
Dependent Claim
23 words
A device as set forth in claim 1 wherein a nonconducting light blocking layer is situated between said photoconductor and said elastomer layers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |