US5757522A
Expired / Lapsed
US
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Method for electro-optically rendering a holographic image
Assignee: University of Alabama in Huntsville
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Filing: 1996-12-02
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Granted: 1998-05-26
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Expires: 2016-12-02
Abstract
Abstract A display method for producing a plurality of different views of an object scene simultaneously is provided. A series of two-dimensional projections of an object is produced for the plane of a display device. Wavefront interference information, independent of the two-dimensional projections is produced for an intermediate plane. The two-dimensional projections and the wavefront interference information are combined to create a diffraction grating in the display device to provide a holographic image of the object scene from a number of positions relative to the display device.
Inventors
- 👤 Jeffrey H. Kulick
- 👤 Stephen T. Kowel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:52
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/001; G09G3/003; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136277; G02F1/29; G02F1/292; G03; G03H; G03H1/00; G03H1/04; G03H1/08; G03H1/26; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G03H2225/00; G03H2225/20; G03H2225/23; Y; Y10; Y10S; Y10S345/00; Y10S345/903; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
A method of rendering a holographic image of a three dimensional object, the method comprising the steps of: producing a series of two dimensional projections of the object for a plane which is coincident with a plane of a display device; producing wavefront interference information, independent of the object data in the series of two dimensional projections of the object, relative to an intermediate plane located at a predetermined position relative to the display device; combining the two dimensional projections and the wavefront interference information following said steps of producing the series of two dimensional projections of the object and producing wavefront interference information; and creating a diffraction grating in the display device following said combining step based upon a combination of the two dimensional projections and the wavefront interference information to thereby provide a holographic image of the object from a number of positions relative to the display device.
Claim 2
Independent Claim
150 words
A method of rendering a holographic image of a three dimensional object, the method comprising the steps of: producing a series of two dimensional projections of the object for a plane which is coincident with a plane of a display device; producing wavefront interference information, independent of the object data in the series of two dimensional projections of the object, relative to an intermediate plane located at a predetermined position relative to the display device; combining the two dimensional projections and the wavefront interference information following said steps of producing the series of two dimensional projections of the object and producing wavefront interference information; and creating a diffraction grating in the display device following said combining step based upon a combination of the two dimensional projections and the wavefront interference information to thereby provide a holographic image of the object from a number of positions relative to the display device.
Claim 3
Dependent Claim
23 words
A method according to claim 1 wherein said step of producing the series of two dimensional projections comprises performing a ray tracing operation.
Claim 4
Dependent Claim
88 words
A method according to claim 1 wherein the display device includes an electro-optic material and a pair of electrodes disposed in operable contact with the electro-optic material, and wherein said step of creating a diffraction grating in the display device comprises the steps of: transmitting an electrical signal to the pair of electrodes in response to the combination of the two dimensional projections and the wavefront interference information; and creating a diffraction grating within the electro-optic material of the display device in response to the transmitted electrical signal.
Claim 5
Dependent Claim
127 words
A method according to claim 1 wherein the display device includes a multilayer display module and wherein said step of a creating diffraction grating in the display device comprises the steps of: generating an electrical signal; applying the generated electrical signal to a drive transistor located in a first layer of the multilayer display module which produces a drive signal in response thereto; transmitting the drive signal through at least a second layer of the multilayer display module to an electrical contact layer of the multilayer display module; transmitting the drive signal from the electrical contact layer to an electro-optic layer comprised of an electro-optic material; and altering the electro-optic material of the electro-optic layer in response to the drive signal transmitted to the electrical contact layer.
Claim 6
Dependent Claim
37 words
A method according to claim 1 further comprising the steps of: illuminating the display device; and diffracting light with the diffraction grating created within the display device to render a holographic image of the three dimensional object.
Claim 7
Independent Claim
171 words
A method of rendering a holographic image comprising the steps of: acquiring a three dimensional representation of an object; producing a series of two dimensional projections of the object for a plane which is coincident with a plane of a display device, wherein the series of two dimensional projections of the object are based upon the three dimensional representation of the object; producing wavefront interference information, independent of the object data in the series of two dimensional projections of the object, relative to an intermediate plane located at a predetermined position relative to the display device; combining the two dimensional projections and the wavefront interference information following said steps of producing the series of two dimensional projections of the object and producing wavefront interference information; and creating a diffraction grating in the display device following said combining step based upon a combination of the two dimensional projections and the wavefront interference information to thereby provide a holographic image of the object from a number of positions relative to the display device.
Claim 8
Independent Claim
171 words
A method of rendering a holographic image comprising the steps of: acquiring a three dimensional representation of an object; producing a series of two dimensional projections of the object for a plane which is coincident with a plane of a display device, wherein the series of two dimensional projections of the object are based upon the three dimensional representation of the object; producing wavefront interference information, independent of the object data in the series of two dimensional projections of the object, relative to an intermediate plane located at a predetermined position relative to the display device; combining the two dimensional projections and the wavefront interference information following said steps of producing the series of two dimensional projections of the object and producing wavefront interference information; and creating a diffraction grating in the display device following said combining step based upon a combination of the two dimensional projections and the wavefront interference information to thereby provide a holographic image of the object from a number of positions relative to the display device.
Claim 9
Dependent Claim
23 words
A method according to claim 6 wherein said step of producing the series of two dimensional projections comprises performing a ray tracing operation.
Claim 10
Dependent Claim
88 words
A method according to claim 6 wherein the display device includes an electro-optic material and a pair of electrodes disposed in operable contact with the electro-optic material, and wherein said step of creating a diffraction grating in the display device comprises the steps of: transmitting an electrical signal to the pair of electrodes in response to the combination of the two dimensional projections and the wavefront interference information; and creating a diffraction grating within the electro-optic material of the display device in response to the transmitted electrical signal.
Claim 11
Dependent Claim
127 words
A method according to claim 6 wherein the display device includes a multilayer display module and wherein said step of a creating diffraction grating in the display device comprises the steps of: generating an electrical signal; applying the generated electrical signal to a drive transistor located in a first layer of the multilayer display module which produces a drive signal in response thereto; transmitting the drive signal through at least a second layer of the multilayer display module to an electrical contact layer of the multilayer display module; transmitting the drive signal from the electrical contact layer to an electro-optic layer comprised of an electro-optic material; and altering the electro-optic material of the electro-optic layer in response to the drive signal transmitted to the electrical contact layer.
Claim 12
Dependent Claim
37 words
A method according to claim 6 further comprising the steps of: illuminating the display device; and diffracting light with the diffraction grating created within the display device to render a holographic image of the three dimensional object.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |