US5465175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autostereoscopic display device
Assignee: Sharp Corp
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Filing: 1993-11-10
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Granted: 1995-11-07
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Expires: 2013-11-10
Abstract
Abstract An auto stereoscopic 3D display comprises a hybrid sandwich comprising a first lenticular screen, a spatial light modulator, a diffuser, and second lenticular screen. A plurality of light sources produce in turn divergent light beams which are modulated by the modulator with two interlaced views. The hybrid sandwich projects the views in different directions towards an observer. The different 2D views are thus visible from directions corresponding to the directions in which the views were captured during recording of a 3D image. Each eye of the observer sees a single view across the whole of the display.
Inventors
- 👤 Graham J. Woodgate
- 👤 David Ezra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:58
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/14; G02; G02B; G02B30/00; G02B30/20; G02B30/26; G02B30/27; G09F19/125; H; H04; H04N; H04N13/00; H04N13/30; H04N13/302; H04N13/32; H04N13/305; H04N13/31
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
142 words
A display for producing an autostereoscopic image, comprising: at least one light source for producing a divergent beam of light; a spatial light modulator comprising a plurality of light modulating cells for modulating light passing therethrough from the at least one light source in accordance with image data; a first array of optical components arranged to receive the divergent light beam from the at least one light source, each of the optical components being arranged to produce an image of the at least one source at a common image plane such that each image is laterally displaced by a respective predetermined amount from an optical axis of the corresponding optical component and the respective predetermined amounts vary progressively across the common image plane; and a second array of optical components having a common object plane which coincides with the common image plane.
Claim 2
Dependent Claim
142 words
A display for producing an autostereoscopic image, comprising: at least one light source for producing a divergent beam of light; a spatial light modulator comprising a plurality of light modulating cells for modulating light passing therethrough from the at least one light source in accordance with image data; a first array of optical components arranged to receive the divergent light beam from the at least one light source, each of the optical components being arranged to produce an image of the at least one source at a common image plane such that each image is laterally displaced by a respective predetermined amount from an optical axis of the corresponding optical component and the respective predetermined amounts vary progressively across the common image plane; and a second array of optical components having a common object plane which coincides with the common image plane.
Claim 3
Dependent Claim
28 words
A display as claimed in claim 1, wherein the first array of optical components is located between the at least one light source and the spatial light modulator.
Claim 4
Dependent Claim
28 words
A display as claimed in claim 1, wherein the spatial light modulator is located between the at least one light source and the first array of optical components.
Claim 5
Dependent Claim
18 words
A display as claimed in claim 1, wherein the optical components of the first array are converging lenses.
Claim 6
Dependent Claim
18 words
A display as claimed in claim 1, wherein the optical components of the second array are converging lenses.
Claim 7
Dependent Claim
31 words
A display as claimed in claim 4, wherein the optical components of the second array are converging lenses, and the first and second arrays comprise first and second lenticular screens, respectively.
Claim 8
Dependent Claim
27 words
A display as claimed in claim 6, wherein each of the first and second lenticular screens comprises a plurality of parallel elongate lenticules having cylindrical convergent properties.
Claim 9
Dependent Claim
26 words
A display as claimed in claim 7, wherein the at least on light source comprises a linear array of light sources extending perpendicularly to the lenticules.
Claim 10
Dependent Claim
34 words
A display as claimed in claim 4, wherein the optical components of the second array are converging lenses, end the first end second arrays comprise first and second two dimensional arrays of lenses, respectively.
Claim 11
Dependent Claim
21 words
A display as claimed in claim 9, wherein the optical components of the first and second arrays have spherical convergent properties.
Claim 12
Dependent Claim
22 words
A display as claimed in claim 9, wherein the at least one light source comprises a two dimensional array of light sources.
Claim 13
Dependent Claim
34 words
A display as claimed in claim 1, wherein the pitch of the optical components of the first array is substantially equal to the pinch of the light modulating cells of the spatial light modulator.
Claim 14
Dependent Claim
31 words
A display as claimed in claim 12, wherein the pitch of the optical components of the second array is greater than the pitch of the optical components of the first array.
Claim 15
Dependent Claim
41 words
A display as claimed in claim 13, wherein the pitch of the optical components of the second array is substantially equal to the product of the pitch of the optical components of the first array and an integer greater than 1.
Claim 16
Dependent Claim
17 words
A display as claimed in claim 1, wherein a diffuser is disposed at the common image plane.
Claim 17
Dependent Claim
18 words
A display as claimed in claim 1, wherein a field lens is disposed at the common image plane.
Claim 18
Dependent Claim
17 words
A display as claimed in claim 1, wherein the spatial light modulator comprises a liquid crystal device.
Claim 19
Dependent Claim
37 words
A display as claimed in claim 1, wherein the at least one light source comprises a plurality of light sources and in that each of the light sources is contiguous with the or each adjacent light source.
Claim 20
Dependent Claim
17 words
A display as claimed in claim 18, further comprising control means for sequentially illuminating the light sources.
Claim 21
Dependent Claim
43 words
A display as claimed in claim 19, wherein the control means is arranged to control the spatial light modulator in accordance with a plurality of sequentially presented images representing a frame of a three dimensional image, each image comprising at least one view.
Claim 22
Dependent Claim
32 words
A display as claimed in claim 1, wherein the optical components of the first array produce the image of the at least one light source by refracting the received divergent light beam.
References Cited (Backward Citations)
GB1273062A
Cited
US3858001A
Cited
EP0262955A2
Cited
GB2206763A
Cited
US5132839A
Cited
US4957351A
Cited
EP0354851A2
Cited
EP0389842A1
Cited
US5062689A
Cited
GB2252175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-06 | 1999-05-08 | 1999-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-06 | 2003-05-08 | 2003-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-06 | 2007-05-08 | 2007-11-07 | $7700.00 | Window Closed / Lapsed |