Patent US4853769A successfully refreshed from Google Patents.
US4853769A
Expired / Lapsed
US
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Time multiplexed auto-stereoscopic three-dimensional imaging system
Assignee: Massachusetts Institute of Technology
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Filing: 1987-06-16
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Granted: 1989-08-01
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Expires: 2007-06-16
Abstract
Abstract Light reflected from a three-dimensional scene is sequentially scanned according to its direction as it passes through a window. At any given time only light traveling in one direction can pass through the window to be recorded. These sequentially recorded collimated views can be recorded, altered, transmitted, and displayed as desired. The views are displayed through a synchronized directional scanner which sequentially displays the views through respective angles, providing a scene with parallax as well as depth. The directional scanner may be a louver structure or a device for steering a collimated display.
Inventors
- 👤 Joel S. Kollin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:29
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/349; H04N13/354; H04N13/20; H04N13/204; H04N13/207; H04N13/211; H04N13/282; H04N13/302; H04N13/32
Claims Analysis
Total Claims: 73
Claim 1
Independent Claim
93 words
Display apparatus for presenting a three-dimensional display to a viewer comprising: an image generator for generating a sequence of images in a common display field to be viewed by a viewer; and a directional scanner between the display field and viewer for directing collimated light from the images in the common display field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception by the viewer of a single three-dimensional view through the common display field.
Claim 2
Dependent Claim
93 words
Display apparatus for presenting a three-dimensional display to a viewer comprising: an image generator for generating a sequence of images in a common display field to be viewed by a viewer; and a directional scanner between the display field and viewer for directing collimated light from the images in the common display field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception by the viewer of a single three-dimensional view through the common display field.
Claim 3
Dependent Claim
14 words
Display apparatus as claimed in claim 1 wherein the directional scanner comprises liquid crystals.
Claim 4
Dependent Claim
15 words
Display apparatus as claimed in claim 1 wherein the directional scanner comprises an electro-optic modulator.
Claim 5
Dependent Claim
15 words
Display apparatus as claimed in claim 1 wherein the directional scanner is an acousto-optic device.
Claim 6
Dependent Claim
17 words
Display apparatus as claimed in claim 1 wherein the image generator generates a sequence of collimated images.
Claim 7
Dependent Claim
15 words
Display apparatus as claimed in claim 5 wherein the directional scanner comprises an electro-optic device.
Claim 8
Dependent Claim
15 words
Display apparatus as claimed in claim 5 wherein the directional scanner is a scanning reflector.
Claim 9
Dependent Claim
80 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images in a common field; and a directional scanner for directing collimated light from the images in the common field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception of a single three-dimensional view through the common field, the directional scanner comprising a plurality of louvers.
Claim 10
Dependent Claim
80 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images in a common field; and a directional scanner for directing collimated light from the images in the common field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception of a single three-dimensional view through the common field, the directional scanner comprising a plurality of louvers.
Claim 11
Dependent Claim
25 words
Display apparatus as claimed in claim 8 wherein the louvers are of fixed orientation relative to each other and are rotated about a common axis.
Claim 12
Dependent Claim
15 words
Display apparatus as claimed in claim 8 wherein the louvers are rotated about individual axes.
Claim 13
Dependent Claim
24 words
Display apparatus as claimed in claim 8 further comprising a second set of louvers orthogonal to the first to provide vertical and horizontal parallax.
Claim 14
Dependent Claim
142 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of collimated images in a common field; and a directional scanner for directing collimated light from the images in the common field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception of a single three-dimensional view through the common field, and wherein the directional scanner comprises a first lenticular lens sheet which receives collimated light from the image generator and focuses that light on a focal plane and a second lenticular lens sheet having a focal plane in common with the focal plane of the first sheet, the first and second sheets being axially translatable relative to each other to directionally scan the collimated light from the image generator.
Claim 15
Dependent Claim
142 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of collimated images in a common field; and a directional scanner for directing collimated light from the images in the common field such that successive images are viewed from different angles, the images being generated and the collimated light being scanned at a sufficient rate to create a perception of a single three-dimensional view through the common field, and wherein the directional scanner comprises a first lenticular lens sheet which receives collimated light from the image generator and focuses that light on a focal plane and a second lenticular lens sheet having a focal plane in common with the focal plane of the first sheet, the first and second sheets being axially translatable relative to each other to directionally scan the collimated light from the image generator.
Claim 16
Dependent Claim
76 words
Display apparatus for presenting a three-dimensional display comprising: a viewing window; view limiting means for limiting the viewing direction from which the viewing window may be viewed and for changing the viewing direction; and imaging means for generating successive images in a common field at the viewing window with changes in the viewing direction such that a binocular viewer may view a different image from the viewing window with each eye to perceive a three-dimensional scene.
Claim 17
Dependent Claim
76 words
Display apparatus for presenting a three-dimensional display comprising: a viewing window; view limiting means for limiting the viewing direction from which the viewing window may be viewed and for changing the viewing direction; and imaging means for generating successive images in a common field at the viewing window with changes in the viewing direction such that a binocular viewer may view a different image from the viewing window with each eye to perceive a three-dimensional scene.
Claim 18
Dependent Claim
79 words
Display apparatus for presenting a three-dimensional display comprising: a viewing window; view limiting means for limiting the direction from which the viewing window may be viewed and for scanning through a range of viewing directions; and imaging means for generating successive images in a common field at the viewing window through each of plural scans of the view limiting means such that binocular viewers viewing from any of plural directions may perceive different three-dimensional images from the viewing window.
Claim 19
Dependent Claim
79 words
Display apparatus for presenting a three-dimensional display comprising: a viewing window; view limiting means for limiting the direction from which the viewing window may be viewed and for scanning through a range of viewing directions; and imaging means for generating successive images in a common field at the viewing window through each of plural scans of the view limiting means such that binocular viewers viewing from any of plural directions may perceive different three-dimensional images from the viewing window.
Claim 20
Dependent Claim
17 words
Display apparatus as claimed in claim 14 wherein the view limiting means comprises a plurality of louvers.
Claim 21
Dependent Claim
14 words
Display apparatus as claimed in claim 14 wherein the imaging means generates collimated images.
Claim 22
Dependent Claim
70 words
Display apparatus for presenting a three-dimensional display to a viewer comprising: an image generator for generating a sequence of images in collimated light from a common display field to be viewed by a viewer; and a directional scanner between the display field and viewer for steering collimated images through a range of directions such that successive images from the common display field are viewed by the viewer from different angles.
Claim 23
Dependent Claim
70 words
Display apparatus for presenting a three-dimensional display to a viewer comprising: an image generator for generating a sequence of images in collimated light from a common display field to be viewed by a viewer; and a directional scanner between the display field and viewer for steering collimated images through a range of directions such that successive images from the common display field are viewed by the viewer from different angles.
Claim 24
Dependent Claim
116 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images in collimated light from a common field; and a directional scanner for steering collimated images through a range of directions such that successive images from the common field are viewed from different angles, wherein the directional scanner comprises a first lenticular lens sheet which receives collimated light from the image generator and focuses that light on a focal plane and a second lenticular lens sheet having a focal plane in common with the focal plane of the first sheet, the first and second sheets being translatable relative each other to directionally scan the collimated light from the image generator.
Claim 25
Dependent Claim
116 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images in collimated light from a common field; and a directional scanner for steering collimated images through a range of directions such that successive images from the common field are viewed from different angles, wherein the directional scanner comprises a first lenticular lens sheet which receives collimated light from the image generator and focuses that light on a focal plane and a second lenticular lens sheet having a focal plane in common with the focal plane of the first sheet, the first and second sheets being translatable relative each other to directionally scan the collimated light from the image generator.
Claim 26
Dependent Claim
15 words
Display apparatus as claimed in claim 17 wherein the directional scanner comprises an electro-optic device.
Claim 27
Dependent Claim
15 words
Display apparatus as claimed in claim 17 wherein the directional scanner is a scanning reflector.
Claim 28
Independent Claim
55 words
A method of providing a three-dimensional display, the method comprising generating successive images in a common field at a viewing window while simultaneously changing the direction from which the viewing window may be viewed such that a binocular viewer may view different images from the common field with different eyes to perceive a three-dimensional image.
Claim 29
Independent Claim
55 words
A method of providing a three-dimensional display, the method comprising generating successive images in a common field at a viewing window while simultaneously changing the direction from which the viewing window may be viewed such that a binocular viewer may view different images from the common field with different eyes to perceive a three-dimensional image.
Claim 30
Dependent Claim
24 words
A method as claimed in claim 21 wherein the step of changing direction from which the viewing window may be viewed comprises rotating louvers.
Claim 31
Dependent Claim
18 words
A method as claimed in claim 21 comprising generating collimated images in the step of generating successive images.
Claim 32
Dependent Claim
34 words
A method as claimed in claim 23 wherein the step of changing the direction from which the viewing window may be viewed comprises translating a pair of lenticular lens sheets relative to each other.
Claim 33
Dependent Claim
20 words
A method as claimed in claim 23 comprising electro-optically changing the direction from which the viewing window may be viewed.
Claim 34
Dependent Claim
26 words
A method as claimed in claim 23 wherein the step of changing the direction from which the viewing window may be viewed comprises scanning a reflector.
Claim 35
Dependent Claim
25 words
A method as claimed in claim 21 further comprising providing a different set of images with each scan to provide a motion picture three-dimensional display.
Claim 36
Independent Claim
83 words
A device for recording successive images of an object field to be displayed as a three-dimensional image, the device comprising an image recorder for recording successive images presented in a common recording field, view limiting means between the object field and the recording field for limiting the viewing direction of the recorder from the common recording field in viewing the object field, and means for scanning the view limiting means through plural directions as successive images are recorded from the common recording field.
Claim 37
Independent Claim
83 words
A device for recording successive images of an object field to be displayed as a three-dimensional image, the device comprising an image recorder for recording successive images presented in a common recording field, view limiting means between the object field and the recording field for limiting the viewing direction of the recorder from the common recording field in viewing the object field, and means for scanning the view limiting means through plural directions as successive images are recorded from the common recording field.
Claim 38
Independent Claim
53 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the view limiting means comprising louvers.
Claim 39
Independent Claim
53 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the view limiting means comprising louvers.
Claim 40
Dependent Claim
22 words
A device as claimed in claim 29 wherein the view limiting means comprises orthogonal sets of louvers for horizontal and vertical parallax.
Claim 41
Independent Claim
54 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the means for scanning comprising liquid crystals.
Claim 42
Independent Claim
54 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the means for scanning comprising liquid crystals.
Claim 43
Dependent Claim
16 words
A device as claimed in claim 28 wherein the means for scanning comprises an electro-optic modulator.
Claim 44
Dependent Claim
16 words
A device as claimed in claim 28 wherein the means for scanning comprises an acousto-optic device.
Claim 45
Independent Claim
66 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the means for limiting the viewing direction comprising a set of fixed louvers positioned behind the means for scanning.
Claim 46
Independent Claim
66 words
A device for recording successive images to be displayed as a three-dimensional image, the device comprising view limiting means for limiting the viewing direction of the device and means for scanning the view limiting means through plural directions as successive images are recorded in a common field, the means for limiting the viewing direction comprising a set of fixed louvers positioned behind the means for scanning.
Claim 47
Dependent Claim
76 words
A device as claimed in claim 34 wherein the means for scanning comprises a first lenticular lens sheet which receives collimated light from the image generator and focuses that light on a focal plane and a second lenticular lens sheet having a focal plane in common wit the focal plane of the first sheet, the first and second sheets being axially translatable relative to each other to directionally scan the collimated light from the image generator.
Claim 48
Dependent Claim
16 words
A device as claimed in claim 34 wherein the means for scanning comprises an electro-optic device.
Claim 49
Dependent Claim
16 words
A device as claimed in claim 34 wherein the means for scanning is a scanning reflector.
Claim 50
Independent Claim
52 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device from a recording field to an object field and scanning through plural limited viewing directions from the recording field to the object field while recording successive images from different respective directions.
Claim 51
Independent Claim
52 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device from a recording field to an object field and scanning through plural limited viewing directions from the recording field to the object field while recording successive images from different respective directions.
Claim 52
Independent Claim
43 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device and scanning through plural limited directions while recording successive images from different respective directions, the method comprising limiting the view by louvers.
Claim 53
Independent Claim
43 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device and scanning through plural limited directions while recording successive images from different respective directions, the method comprising limiting the view by louvers.
Claim 54
Independent Claim
47 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device and scanning through plural limited directions while recording successive images from different respective directions, the method comprising limiting the view by a set of fixed louvers.
Claim 55
Independent Claim
47 words
A method of recording a set of images for a three-dimensional display comprising limiting the viewing direction of a recording device and scanning through plural limited directions while recording successive images from different respective directions, the method comprising limiting the view by a set of fixed louvers.
Claim 56
Dependent Claim
29 words
A method as claimed in claim 40 wherein the step of scanning comprises translating first and second lenticular lens sheets, having a common focal plane, relative to each other.
Claim 57
Dependent Claim
14 words
A method as claimed in claim 40 comprising electro-optically scanning through plural limited directions
Claim 58
Dependent Claim
16 words
A method as claimed in claim 40 wherein the step of scanning comprises scanning a reflector.
Claim 59
Independent Claim
30 words
A method of creating a three-dimensional display comprising optically multiplexing in time a plurality of images from a common display field as approximate plane waves traveling in different respective directions.
Claim 60
Independent Claim
30 words
A method of creating a three-dimensional display comprising optically multiplexing in time a plurality of images from a common display field as approximate plane waves traveling in different respective directions.
Claim 61
Independent Claim
66 words
A method of creating a three-dimensional display comprising generating a plurality of electronically stored images to be displayed in a common display field and optically multiplexed in time as approximate plane waves traveling in different respective directions and electronically processing the electronically stored images to modify a three-dimensional scene displayed in the common display field to be perceived by a viewer viewing the multiplexed plane waves.
Claim 62
Independent Claim
66 words
A method of creating a three-dimensional display comprising generating a plurality of electronically stored images to be displayed in a common display field and optically multiplexed in time as approximate plane waves traveling in different respective directions and electronically processing the electronically stored images to modify a three-dimensional scene displayed in the common display field to be perceived by a viewer viewing the multiplexed plane waves.
Claim 63
Dependent Claim
28 words
A method as claimed in claim 45 wherein the step of electronically processing the electronically stored images comprises changing the perceived depth of an object in the scene.
Claim 64
Dependent Claim
29 words
A method as claimed in claim 45 wherein the step of electronically processing the electronically stored images comprises changing the perceived relative position of an object in the scene.
Claim 65
Dependent Claim
29 words
A method as claimed in claim 45 wherein the step of electronically processing the electronically stored images comprises interposing computer generated images with images generated from a real scene.
Claim 66
Dependent Claim
43 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of image; and a directional scanner comprising a plurality of rotating louvers for directing collimated light from the images such that successive images are viewed from different angles.
Claim 67
Dependent Claim
43 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of image; and a directional scanner comprising a plurality of rotating louvers for directing collimated light from the images such that successive images are viewed from different angles.
Claim 68
Dependent Claim
26 words
Display apparatus as claimed in claim 49 wherein the louvers are of a fixed orientation relative to each other and are rotated about a common axis.
Claim 69
Dependent Claim
15 words
Display apparatus as claimed in claim 49 wherein the louvers are rotated about individual axes.
Claim 70
Dependent Claim
53 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images; and a directional scanner for directing collimated light from the images such that successive images are viewed from different angles, the scanner comprising first and second sets of orthogonal louvers which provide vertical and horizontal parallax.
Claim 71
Dependent Claim
53 words
Display apparatus for presenting a three-dimensional display comprising: an image generator for generating a sequence of images; and a directional scanner for directing collimated light from the images such that successive images are viewed from different angles, the scanner comprising first and second sets of orthogonal louvers which provide vertical and horizontal parallax.
Claim 72
Independent Claim
50 words
A method of providing a three-dimensional display, the method comprising generating successive images at a viewing window while simultaneously rotating louvers to change the direction from which the viewing window may be viewed such that a binocular viewer may view different images with different eyes to perceive a three-dimensional image.
Claim 73
Independent Claim
50 words
A method of providing a three-dimensional display, the method comprising generating successive images at a viewing window while simultaneously rotating louvers to change the direction from which the viewing window may be viewed such that a binocular viewer may view different images with different eyes to perceive a three-dimensional image.
References Cited (Backward Citations)
US2961486A
Cited
US3140415A
Cited
US3097261A
Cited
US3529082A
Cited
US3852524A
Cited
US3829838A
Cited
US3674332A
Cited
US4023158A
Cited
US4142772A
Cited
US4359758A
Cited
US4290083A
Cited
US4367486A
Cited
US4323920A
Cited
US4376950A
Cited
US4616217A
Cited
US4415996A
Cited
US4462044A
Cited
US4584604A
Cited
US4472737A
Cited
US4649425A
Cited
US4607255A
Cited
US4567513A
Cited
US4566031A
Cited
US4671632A
Cited
US4631580A
Cited
JPH0287291A
Cited
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