US5016984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal motion picture projector with memory
Assignee: Manchester R&D Partnership
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Filing: 1987-07-30
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Granted: 1991-05-21
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Expires: 2007-07-30
Abstract
Abstract A liquid crystal moving picture projector (1) includes a liquid crystal imager (2) for creating characteristics of an image, and projection optics (3) for projecting images sequentially created by the imager, the imager including a liquid crystal material (4) capable of temporarily storing information at respective areas thereof to create image characteristics capable of being projected sequentially by the projection optics. The temporary storage may be a function of charge storage directly on liquid crystal material or by structural storage characteristics relying on bulk effect of smectic liquid crystal. A method of projecting plural images in sequence includes creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection.
Inventors
- 👤 James L. Fergason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:57
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1334; G03; G03B; G03B21/00; G03B21/132; G03G; G03G15/00; G03G15/04; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3108; G03G15/043; G03G15/0435
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
A liquid crystal moving picture projector comprising a liquid crystal imager means for creating characteristics of an image, and projection optics means for projecting images sequentially created by the imager, said imager means including a liquid crystal material capable of temporarily storing information at respective areas thereof to create image characteristics capable of being projected sequentially by said projection optics means, said liquid crystal material comprising a disk-like structure of liquid crystal in a containment medium,
Claim 2
Dependent Claim
76 words
A liquid crystal moving picture projector comprising a liquid crystal imager means for creating characteristics of an image, and projection optics means for projecting images sequentially created by the imager, said imager means including a liquid crystal material capable of temporarily storing information at respective areas thereof to create image characteristics capable of being projected sequentially by said projection optics means, said liquid crystal material comprising a disk-like structure of liquid crystal in a containment medium,
Claim 3
Dependent Claim
34 words
The projector of claim 1, further comprising means for effecting relative movement between said disk-like structure and said projection optics means thereby sequentially to bring respective information to said projection optics for projection thereby.
Claim 4
Dependent Claim
122 words
A liquid crystal moving picture projector comprising a liquid crystal imager means for creating characteristics of an image, and projection optics means for projecting images sequentially created by the imager, said imager means including a liquid crystal material capable of temporarily storing information at respective areas thereof to create image characteristics capable of being projected sequentially by said projection optics means, further comprising input means for at least one of writing or erasing information with respect to said liquid crystal material for projection by said projection optics means, said input means comprising means for effecting such writing or erasing at a speed different than the speed with which respective areas of said liquid crystal material are projected by said projection optics means.
Claim 5
Dependent Claim
122 words
A liquid crystal moving picture projector comprising a liquid crystal imager means for creating characteristics of an image, and projection optics means for projecting images sequentially created by the imager, said imager means including a liquid crystal material capable of temporarily storing information at respective areas thereof to create image characteristics capable of being projected sequentially by said projection optics means, further comprising input means for at least one of writing or erasing information with respect to said liquid crystal material for projection by said projection optics means, said input means comprising means for effecting such writing or erasing at a speed different than the speed with which respective areas of said liquid crystal material are projected by said projection optics means.
Claim 6
Dependent Claim
110 words
A projector, comprising projecting means for projecting respective images, a substantially continuous transfer medium means for conveying to said projecting means respective sets of image characteristics for projection by said projecting means, said transfer medium means having a storage capability for storing at plural locations thereof respective sets of image characteristics for projection and being capable of being re-written at such respective areas with the same or different respective sets of image characteristics, and said transfer medium means comprising liquid crystal material having structural characteristics responsive to a prescribed input to create such image characteristics, said liquid crystal material comprising a disk-like structure of liquid crystal in a containment medium,
Claim 7
Dependent Claim
110 words
A projector, comprising projecting means for projecting respective images, a substantially continuous transfer medium means for conveying to said projecting means respective sets of image characteristics for projection by said projecting means, said transfer medium means having a storage capability for storing at plural locations thereof respective sets of image characteristics for projection and being capable of being re-written at such respective areas with the same or different respective sets of image characteristics, and said transfer medium means comprising liquid crystal material having structural characteristics responsive to a prescribed input to create such image characteristics, said liquid crystal material comprising a disk-like structure of liquid crystal in a containment medium,
Claim 8
Dependent Claim
156 words
A projector, comprising projecting means for projecting respective images, a substantially continuous transfer medium means for conveying to said projecting means respective sets of image characteristics for projection by said projecting means, said transfer medium means having a storage capability for storing at plural locations thereof respective sets of image characteristics for projection and being capable of being re-written at such respective areas with the same or different respective sets of image characteristics, said transfer medium means comprising liquid crystal material having structural characteristics responsive to a prescribed input to create such image characteristics, and further comprising input means for at least one of writing or erasing information with respect to said liquid crystal material for projection by said projection optics means, said input means comprising means for effecting such writing or erasing at a speed different than the speed with which respective areas of said liquid crystal material are projected by said projection optics means,
Claim 9
Dependent Claim
156 words
A projector, comprising projecting means for projecting respective images, a substantially continuous transfer medium means for conveying to said projecting means respective sets of image characteristics for projection by said projecting means, said transfer medium means having a storage capability for storing at plural locations thereof respective sets of image characteristics for projection and being capable of being re-written at such respective areas with the same or different respective sets of image characteristics, said transfer medium means comprising liquid crystal material having structural characteristics responsive to a prescribed input to create such image characteristics, and further comprising input means for at least one of writing or erasing information with respect to said liquid crystal material for projection by said projection optics means, said input means comprising means for effecting such writing or erasing at a speed different than the speed with which respective areas of said liquid crystal material are projected by said projection optics means,
Claim 10
Independent Claim
179 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein such liquid crystal material has structural storage properties, and said storing comprising causing the structure of such liquid crystal material to assume and to maintain a prescribed structural alignment in the absence of externally applied input, such liquid crystal material comprising liquid crystal in a containment medium that in the absence of prescribed input tends to distort the liquid crystal structure to increase scattering or absorption of incident light, and said storing comprising applying thermal energy to the liquid crystal to heat the same above a temperature which allows the same to undergo structural distortion and cooling the liquid crystal to maintain such distortion absent application of further prescribed input thereto,
Claim 11
Independent Claim
179 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein such liquid crystal material has structural storage properties, and said storing comprising causing the structure of such liquid crystal material to assume and to maintain a prescribed structural alignment in the absence of externally applied input, such liquid crystal material comprising liquid crystal in a containment medium that in the absence of prescribed input tends to distort the liquid crystal structure to increase scattering or absorption of incident light, and said storing comprising applying thermal energy to the liquid crystal to heat the same above a temperature which allows the same to undergo structural distortion and cooling the liquid crystal to maintain such distortion absent application of further prescribed input thereto,
Claim 12
Independent Claim
118 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein such liquid crystal material comprises a rotatable disk-like structure of liquid crystal in a containment medium, said creating steps comprising creating images at plural areas of such disk-like structure, and further comprising rotating such disk-like structure sequentially to move such respective areas into projecting means sequentially to project such images,
Claim 13
Independent Claim
118 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein such liquid crystal material comprises a rotatable disk-like structure of liquid crystal in a containment medium, said creating steps comprising creating images at plural areas of such disk-like structure, and further comprising rotating such disk-like structure sequentially to move such respective areas into projecting means sequentially to project such images,
Claim 14
Independent Claim
140 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein the liquid crystal material comprises liquid crystal in a containment medium, and said creating comprises applying electric field to the liquid crystal material to cause alignment of the liquid crystal structure with respect to such field, and further comprising erasing such image by applying thermal energy to the liquid crystal material to enable the structure alignment of the liquid crystal to assume a distorted alignment under the influence of such containment medium,
Claim 15
Independent Claim
140 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein the liquid crystal material comprises liquid crystal in a containment medium, and said creating comprises applying electric field to the liquid crystal material to cause alignment of the liquid crystal structure with respect to such field, and further comprising erasing such image by applying thermal energy to the liquid crystal material to enable the structure alignment of the liquid crystal to assume a distorted alignment under the influence of such containment medium,
Claim 16
Independent Claim
140 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein the liquid crystal material comprises liquid crystal in a containment medium, and said creating comprises applying thermal energy to the liquid crystal material to enable the structural alignment of the liquid crystal to assume a distorted alignment under the influence of such containment medium, and further comprising erasing such image by applying electric field to the liquid crystal material to cause alignment of the liquid crystal structure with respect to such field.
Claim 17
Independent Claim
140 words
A method of projecting plural images in sequence, comprising: creating an image or characteristics of an image in a liquid crystal material, storing such image in such liquid crystal material, directing light at such liquid crystal material, projecting such image as a function of light transmitted through or scattered by such liquid crystal material, and creating a further image in such liquid crystal material for subsequent projection, wherein the liquid crystal material comprises liquid crystal in a containment medium, and said creating comprises applying thermal energy to the liquid crystal material to enable the structural alignment of the liquid crystal to assume a distorted alignment under the influence of such containment medium, and further comprising erasing such image by applying electric field to the liquid crystal material to cause alignment of the liquid crystal structure with respect to such field.
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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) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |