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WO1993019394A2 - Systeme de visionnement bi-ecran - Google Patents

Systeme de visionnement bi-ecran Download PDF

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Publication number
WO1993019394A2
WO1993019394A2 PCT/GB1993/000590 GB9300590W WO9319394A2 WO 1993019394 A2 WO1993019394 A2 WO 1993019394A2 GB 9300590 W GB9300590 W GB 9300590W WO 9319394 A2 WO9319394 A2 WO 9319394A2
Authority
WO
WIPO (PCT)
Prior art keywords
screen
decoder
screens
image
wholly
Prior art date
Application number
PCT/GB1993/000590
Other languages
English (en)
Other versions
WO1993019394A3 (fr
Inventor
James Amachi Ashbey
Original Assignee
Delta Systems Design Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delta Systems Design Limited filed Critical Delta Systems Design Limited
Priority to BR9306129A priority Critical patent/BR9306129A/pt
Priority to JP5516390A priority patent/JPH07504766A/ja
Priority to EP93906727A priority patent/EP0724744A1/fr
Publication of WO1993019394A2 publication Critical patent/WO1993019394A2/fr
Publication of WO1993019394A3 publication Critical patent/WO1993019394A3/fr
Priority to KR1019940703267A priority patent/KR950701083A/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/349—Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/346—Image reproducers using prisms or semi-transparent mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
    • H04N13/395—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes

Definitions

  • the present invention relates to a three-dimensional imaging system and, in particular, to an improvement over the imaging systems described in our earlier International applications, nos. PCT/GB91/01318 (published under the number WO92/03021) and PCT/GB91/02313.
  • the system described in our earlier application is a three-dimensional imaging system utilising a single image screen which carries components of both images of the stereoscopic pair which give rise to the three-dimensional effect. Consequently, the image pair must be processed, either electronically or optically, to combine parts of the two images before the combined image is displayed.
  • a decoder screen for use in a three-dimensional imaging system, the decoder screen comprising a substrate and a plurality of parallel, elongate lenticular or prism elements secured to the substrate so that they are arranged edge-to-edge; the substrate having formed thereon a pattern of clear and opaque areas, the screen being characterised in that the pattern of opaque and clear areas is such that the screen defines a plurality of angularly spaced viewing positions from which the screen appears alternately wholly opaque and wholly clear.
  • the invention provides a three-dimensional imaging system, a system comprising a pair of image screens each for displaying one of a stereoscopic pair of images which viewed together can combine to provide a three-dimensional effect and means for re-directing light from at least one of the image screen towards a viewing location such that a viewer at the viewing location is able to view both images characterised in that the system further comprises a decoder screen of the type described above placed between each image screen and the said means for re-directing, the two decoder screens being so arranged that the wholly opaque viewing positions defined by one decoder screen coincide substantially with the wholly clear viewing positions defined by the other decoder screen.
  • Figure 1 shows a two-screen, three-dimensional imaging system
  • Figure 2 shows a decoder screen in accordance with the invention
  • Figure 3 shows, schematically, the alternating viewing positions defined by the decoder screen of Figure 2;
  • Figure 4 shows a two-screen viewing system utilising the decoder screen of Figure 2;
  • Figures 5a and 5b show the angular filter used in the viewing system of Figure 4;
  • Figure 6 shows a first two-screen viewing system using cine-film projectors
  • Figure 7 shows a second such viewing system.
  • FIG. 1 One form of three-dimensional imaging system is shown in Figure 1.
  • the two images which form the stereoscopic pair are displayed on two television monitors 10 and 12 arranged with their screens more or less perpendicular to one another.
  • a beamsplitter 14, for example, a half-silvered mirror is arranged between the two screens 10 and 12 so as to permit a viewer to see both images from the same position.
  • each of the viewer's two eyes receives one, and one only, of the two images.
  • This can, for example, be achieved by placing suitable polarising filters 10a and 12a over the two screens 10 and 12 and providing the viewer with polarising glasses which act to restrict light entering each eye to light of a particular polarity originating from one of the two screens.
  • decoder screen placed between each screen and the viewer, the decoder screen being such that it appears wholly black (opaque) to one eye and wholly clear (transparent) to the other eye.
  • the decoder screen 20 of Figure 2 comprises a substrate 22 to which are secured a plurality of parallel elongate lenticular elements 24. Formed on the surface of the substrate 22 to which the lenticular elements 24 are fixed in a pattern of clear and opaque bands 26 extending parallel to the lenticular elements 24. The bands 26 are so positioned relative to the lenticular elements 24 that the decoder screen 20 defines a series of alternate positions at (or, more accurately, angles along which) the decoder screen 20 appears either wholly opaque or wholly transparent.
  • FIG. 3 This is illustrated schematically in Figure 3 in relation to a single image (a triangle) displayed on a single television monitor screen 30.
  • the decoder screen 32 placed in front of the image defines a plurality of angularly-spaced positions at which the triangle can be seen through the decoder screen 32 (indicated by reference number 34), separated by alternating positions (indicated by reference number 36) at which the triangle cannot be seen and the decoder screen appears to be completely opaque.
  • decoder screen 20 which, at normal viewing distance has adjacent 'opaque' and 'transparent' positions separated by a distance more or less equal to the separation of the viewer's eyes. A viewer located at normal viewing distance will thus perceive the decoder screen 20 as wholly opaque, with one eye, and wholly transparent, with the other.
  • Decoder screens 40a and 40b constructed along the lines of that shown in Figure 2 can be positioned in. front of the two television monitor screens 40 and 42 as shown in Figure 4, in place of the polarising filters 10a and 12a shown in Figure 1.
  • the two decoder screens 40a and 42a are constructed either so that they are offset relative to one another or so that the patterns of viewing positions they define are reversed relative to one another, the net effect of the two decoder screens 40a and 42a will be that the viewer will perceive one screen 40a as wholly transparent with one eye and wholly opaque with the other, and the other screen 42a as wholly opaque with the first eye and wholly transparent with the second.
  • the viewer will see one monitor screen 40 with the first eye and the other monitor screen 42 with the second. He will, as a result, perceive a three-dimensional image without the need for special glasses.
  • the angular filter 44 is made of material known commercially as 'light control film' which consists, as shown in Figure 5a of hundreds of parallel, opaque, rectangular microlouvres. As can be seen from Figure 5b, these act to prevent transmission of light which is not substantially perpendicular to the plane of the filter 44. Consequently, the filter 44 cuts out flicker from the off-axis monitor 42.
  • the decoder screen of Figure 2 can also be used in a two-screen imaging system using projected film, rather than television projectors, provided that the images are back-projected onto the screens as shown in Figures 6 and 7.
  • the projectors 60 are disposed behind the screens 62 and 64 and the decoder screens 62a and 64a are positioned between the screens 62, 64 and a beamsplitter arrangement 66 which acts to direct the two projected images towards the same viewing position.
  • the screens 62 and 64 are generally perpendicular to one another and the beamsplitter 66 is in the form of a single, half-silvered mirror arranged between the screens.
  • the screens 62 and 64 may be arranged parallel to one another, and the beamsplitter arrangement 66 in the form of an X-shaped arrangement ' of half-silvered mirrors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Endoscopes (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Cameras In General (AREA)

Abstract

Un système de visionnement tridimensionnel comporte dux écrans de visualisation, de télévision par exemple (40, 42), disposés à 90°. Un dispositif de fractionnement de faisceau -un miroir à réflexion partielle en l'occurrence- est placé entre ces deux écrans (40, 42) de façon à diriger ces deux images vers le même point de visionnement. Un écran décodeur (40a, 42a) est intercalé entre chacun de ces écrans (40, 42) et ce dispositif de fractionnement de faisceau (46). Chaque écran décodeur (40a, 42a) comprend un substrat sur lequel sont fixés bord à bord de multiples éléments lenticulaires parallèles et allongés. Ce substrat présente de multiples zones transparentes et opaques faisant que l'écran décodeur définit de multiples positions de visionnement alternées depuis lesquelles il apparaît entièrement opaque ou entièrement transparent. Les deux écrans décodeurs (40a, 42a) sont configurés de manière que les positions de visionnement pour lesquelles un écran apparaît totalement opaque coïncident avec celles où l'autre écran décodeur apparaît totalement transparent. Lorsque deux images d'une paire stéréoscopique sont affichées sur les deux écrans de visualisation (40, 42), un spectateur, placé de manière que chacun de ses yeux se trouve à chacune de deux positions adjacentes de visionnement définies par les écrans décodeurs (40a, 42a), verra une image tridimensionnelle sans avoir à porter de lunettes spéciales.
PCT/GB1993/000590 1992-03-20 1993-03-22 Systeme de visionnement bi-ecran WO1993019394A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR9306129A BR9306129A (pt) 1992-03-20 1993-03-22 Sistema de formação de imagem de telas gêmeas
JP5516390A JPH07504766A (ja) 1992-03-20 1993-03-22 ２組のスクリーンによる画像形成システム
EP93906727A EP0724744A1 (fr) 1992-03-20 1993-03-22 Systeme de visionnement bi-ecran
KR1019940703267A KR950701083A (ko) 1992-03-20 1994-09-17 트윈 스크린 영상시스템(twin screen system)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929206048A GB9206048D0 (en) 1992-03-20 1992-03-20 Twin screen raster lenticular hybrid
GB9206048.2 1992-03-20

Publications (2)

Publication Number Publication Date
WO1993019394A2 true WO1993019394A2 (fr) 1993-09-30
WO1993019394A3 WO1993019394A3 (fr) 1993-10-28

Family

ID=10712481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/000590 WO1993019394A2 (fr) 1992-03-20 1993-03-22 Systeme de visionnement bi-ecran

Country Status (8)

Country Link
EP (1) EP0724744A1 (fr)
JP (1) JPH07504766A (fr)
KR (1) KR950701083A (fr)
AU (1) AU3762793A (fr)
BR (1) BR9306129A (fr)
CA (1) CA2132453A1 (fr)
GB (1) GB9206048D0 (fr)
WO (1) WO1993019394A2 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602934A3 (fr) * 1992-12-17 1995-03-01 Sharp Kk Dispositif d'affichage autostéréoscopique.
EP0656555A1 (fr) * 1993-12-01 1995-06-07 SHARP Corporation Système de visualisation d'images 3-dimensionelles
DE19506648A1 (de) * 1995-02-25 1996-08-29 Lueder Ernst Vorrichtung und Verfahren zur autostereoskopischen Darstellung von dreidimensionalen Strukturen
WO1996027145A1 (fr) * 1995-02-27 1996-09-06 HEINRICH-HERTZ-INSTITUT FüR NACHRICHTENTECHNIK BERLIN GMBH Terminal video autostereoscopique
US5644427A (en) * 1994-02-07 1997-07-01 Terumo Kabushiki Kaisha Image display apparatus
GB2312528A (en) * 1996-04-22 1997-10-29 Hughes Aircraft Co Autostereoscopic display and method
US5703717A (en) * 1993-11-12 1997-12-30 Sharp Kabushiki Kaisha Three-dimensional projection display apparatus
US5774261A (en) * 1993-11-19 1998-06-30 Terumo Kabushiki Kaisha Image display system
US5818399A (en) * 1994-02-09 1998-10-06 Terumo Kabushiki Kaisha Image communication apparatus
US5976017A (en) * 1994-02-09 1999-11-02 Terumo Kabushiki Kaisha Stereoscopic-image game playing apparatus
US6011580A (en) * 1994-06-07 2000-01-04 Terumo Kabushiki Kaisha Image display apparatus
US6061489A (en) * 1994-10-12 2000-05-09 Sharp Kabushiki Kaisha Light source and display
US6115058A (en) * 1993-12-03 2000-09-05 Terumo Kabushiki Kaisha Image display system
EP1657586A3 (fr) * 1998-05-21 2006-05-24 Nippon Telegraph & Telephone Corporation Procédé de représentation tridimensionnelle et appareil correspondant
CN102147533A (zh) * 2010-02-10 2011-08-10 介面光电股份有限公司 立体影像成像装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU661959B3 (en) * 1994-03-17 1995-08-10 Jack Newman Stereoscopic camera device
TW201126204A (en) * 2010-01-25 2011-08-01 J Touch Corp Three-dimensional video imaging device
WO2013031819A1 (fr) * 2011-08-30 2013-03-07 株式会社 スピン Dispositif de projection d'images

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807965A (en) * 1987-05-26 1989-02-28 Garakani Reza G Apparatus for three-dimensional viewing
GB9016902D0 (en) * 1990-08-01 1990-09-12 Delta System Design Ltd Deep vision

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0602934A3 (fr) * 1992-12-17 1995-03-01 Sharp Kk Dispositif d'affichage autostéréoscopique.
US5726800A (en) * 1992-12-17 1998-03-10 Sharp Kabushiki Kaisha Autostereoscopic directional display apparatus
US5703717A (en) * 1993-11-12 1997-12-30 Sharp Kabushiki Kaisha Three-dimensional projection display apparatus
EP0654951B1 (fr) * 1993-11-19 1999-12-01 Terumo Kabushiki Kaisha Système d'affichage d'image stéréoscopique
US5774261A (en) * 1993-11-19 1998-06-30 Terumo Kabushiki Kaisha Image display system
EP0656555A1 (fr) * 1993-12-01 1995-06-07 SHARP Corporation Système de visualisation d'images 3-dimensionelles
US6014164A (en) * 1993-12-01 2000-01-11 Sharp Kabushiki Kaisha Display for 3D images
US6115058A (en) * 1993-12-03 2000-09-05 Terumo Kabushiki Kaisha Image display system
US5644427A (en) * 1994-02-07 1997-07-01 Terumo Kabushiki Kaisha Image display apparatus
US5818399A (en) * 1994-02-09 1998-10-06 Terumo Kabushiki Kaisha Image communication apparatus
US5976017A (en) * 1994-02-09 1999-11-02 Terumo Kabushiki Kaisha Stereoscopic-image game playing apparatus
US6011580A (en) * 1994-06-07 2000-01-04 Terumo Kabushiki Kaisha Image display apparatus
US6061489A (en) * 1994-10-12 2000-05-09 Sharp Kabushiki Kaisha Light source and display
DE19506648C2 (de) * 1995-02-25 1998-08-06 Lueder Ernst Verfahren und Vorrichtung zur autostereoskopischen Darstellung von dreidimensionalen Strukturen
DE19506648A1 (de) * 1995-02-25 1996-08-29 Lueder Ernst Vorrichtung und Verfahren zur autostereoskopischen Darstellung von dreidimensionalen Strukturen
WO1996027145A1 (fr) * 1995-02-27 1996-09-06 HEINRICH-HERTZ-INSTITUT FüR NACHRICHTENTECHNIK BERLIN GMBH Terminal video autostereoscopique
US5825540A (en) * 1996-04-22 1998-10-20 Raytheon Company Autostereoscopic display and method
GB2312528A (en) * 1996-04-22 1997-10-29 Hughes Aircraft Co Autostereoscopic display and method
GB2312528B (en) * 1996-04-22 2000-02-09 Hughes Aircraft Co Autostereoscopic display and method
EP1657586A3 (fr) * 1998-05-21 2006-05-24 Nippon Telegraph & Telephone Corporation Procédé de représentation tridimensionnelle et appareil correspondant
US7148859B2 (en) 1998-05-21 2006-12-12 Nippon Telegraph And Telephone Corporation Three-dimensional representation method and an apparatus thereof
CN102147533A (zh) * 2010-02-10 2011-08-10 介面光电股份有限公司 立体影像成像装置

Also Published As

Publication number Publication date
EP0724744A1 (fr) 1996-08-07
BR9306129A (pt) 1998-01-13
JPH07504766A (ja) 1995-05-25
CA2132453A1 (fr) 1993-09-30
AU3762793A (en) 1993-10-21
GB9206048D0 (en) 1992-05-06
WO1993019394A3 (fr) 1993-10-28
KR950701083A (ko) 1995-02-20

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