WO1991007696A1 - Procede et appareil de projection d'images cinematographiques tridimensionnelles - Google Patents

Procede et appareil de projection d'images cinematographiques tridimensionnelles Download PDF

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Publication number
WO1991007696A1
WO1991007696A1 PCT/CA1990/000403 CA9000403W WO9107696A1 WO 1991007696 A1 WO1991007696 A1 WO 1991007696A1 CA 9000403 W CA9000403 W CA 9000403W WO 9107696 A1 WO9107696 A1 WO 9107696A1
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WO
WIPO (PCT)
Prior art keywords
lenses
projection
eye
screen
images
Prior art date
Application number
PCT/CA1990/000403
Other languages
English (en)
Inventor
William C. Shaw
I. Graeme Ferguson
Roman B. Kroitor
Gordon W. Harris
Ken T. Baker
Paul D. Panabaker
Marian F. Toporkiewickz
Original Assignee
Imax Systems Corporation
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 Imax Systems Corporation filed Critical Imax Systems Corporation
Publication of WO1991007696A1 publication Critical patent/WO1991007696A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/16—Stereoscopic photography by sequential viewing
    • 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
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • 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
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/334—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
    • 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
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing

Definitions

  • This invention relates to a method and apparatus for presenting stereoscopic or three-dimensional motion pictures (hereafter called 3-D motion pictures). BACKGROUND OF THE INVENTION
  • 3-D motion pictures are generally made by simultaneously photographing a subject using two motion picture cameras positioned to provide "left eye” and "right eye” views of the subject.
  • the images recorded by the cameras are projected onto a screen and are optically coded in some way so that the left eye of a viewer sees only the images that were recorded by the "left eye” camera while the viewer's right eye sees only the "right eye” images.
  • the viewer then perceives a stereoscopic or 3-D effect.
  • DESCRIPTION OF THE PRIOR ART One method of coding the images involves using colour filters (anaglypta) .
  • the right eye images may be coloured blue and the left eye images red and the viewer provided with spectacles having filters that are coloured so that the viewer's right eye sees only blue images and the left eye sees only red images.
  • a disadvantage of this technique is of course that it can be used with two colour images only. This method was used by the assignee of the present invention (Imax Systems Corporation) to present computer generated 3-D images in a dome at the Tsukuba Expo '85 fair in Japan.
  • Full colour 3-D images may be coded by a technique referred to as "alternate eye". This involves the use of what are in effect shuttered spectacles worn by a viewer. The shutters effectively block and unblock the view from each eye alternately in timed relation to and vice versa. This technique is discussed, for example, in United States Patent No. 4,424,529 (Roese et al.).
  • Another coding technique involves the use of crossed polarized filters (axes of polarization at 90° to each other) on the projection lenses for the respective images and correspondingly polarized filters in glasses worn by a viewer.
  • This technique was used by Imax Systems Corporation to present full colour 3-D motion pictures at Expo '86 in Vancouver, Canada using large format films such as those that are available under the registered trade marks IMAX and OMNIMAX.
  • the use of large format films is possible as a result of development of the so- called "rolling loop" film transport mechanism for cameras and projectors.
  • United States Patent No. 3,494,524 to Jones discloses the principle of a rolling loop transport mechanism and a number of improvements are disclosed in United States Patents Nos. 3,600,073, 4,365,877 and 4,441,796 (Shaw).
  • An object of the present invention is to provide an improved method and apparatus for presenting 3-D motion pictures.
  • the invention involves the steps of providing a dome-shaped projection screen and alternately projecting corresponding left-eye and right- eye images onto the screen.
  • the left and right eyes of each person viewing the motion picture are alternately blocked in synchronism with the appearance of right-eye and left-eye images respectively on the screen, so that a stereoscopic effect is perceived.
  • the images are projected from two separate film strips through separate wide-angle lenses having respective projection axes.
  • the lenses are positioned with their projection axes in a common vertical or horizontal plane for co-incidence of the projected images on the screen in a direction at right angles to said plane.
  • the lenses are oriented within the said common plane to achieve co ⁇ incidence of the projected images on the screen in the direction of the plane.
  • the invention preferably provides a dome-shaped projection screen and means for alternately projecting corresponding left-eye and right-eye images onto said screen from two separate film strips.
  • the projection means includes separate wide- angle lenses for the respective film strips, the lenses having respective projection axes and being positioned directly adjacent one another with their respective axes in a common vertical or horizontal plane for co-incidence of the projected images on the screen in a direction at right angles to that plane and with the lens axes oriented within the said common plane to achieve co-incidence of the images on the screen in the direction of that plane.
  • the apparatus also includes means for alternately blocking the left and right eyes of each person viewing the motion picture in synchronism with the appearance of right-eye and left-eye images respectively on the screen, so that a stereoscopic effect is perceived.
  • IMAX IMAX
  • OMNIMAX COMNIMAX
  • This format is characterized by a large frame size (so-called 70 millimeter 15 perf. film) and high quality film stock. While this particular format is not essential to the invention, it is believed that a large frame size should be used having a usable image area of at least 1200 square millimeters (approximately two square inches) .
  • Fig. 1 is a schematic vertical sectional view through a theatre for projecting motion pictures in accordance with the invention
  • Fig. 2 is a simplified perspective view showing the principal components of a 3-D motion picture projector used in the theatre of Fig. 1;
  • Fig. 3 is a schematic view showing the two rotors of the projector of Fig. 2;
  • Fig. 4 is a somewhat schematic side elevational view of the projection lenses of the projector of Fig. 2;
  • Figs. 5 and 6 are schematic perspective views illustrating alternate eye 3-D projection.
  • Fig. 7 shows a typical frame format for a filmstrip used in the method of the invention.
  • a motion picture projection theatre is shown to include a dome-shaped structure 10, the internal surface of which forms a projection screen 12.
  • a structure generally indicated at 14 that defines seating areas for the audience and a projection room 16 for a projector 20.
  • the projector is designed to alternately project corresponding left-eye and right-eye images onto the screen 12 from two separate filmstrips through separate wide-angle lenses having respective projection axes oriented to promote a high degree of lateral and vertical co-incidence of the projected images.
  • the viewing audience is provided with glasses that operate in synchronism with the projector to alternately block the left and right eyes of each person in synchronism with the appearance of right-eye and left- eye images on the screen 12, so that a stereoscopic effect is perceived.
  • the projector 20 has a frame 22 which includes three horizontally disposed baseplates 24, 26 and 28 supported in vertically spaced positions by various legs 30.
  • Baseplates 24 and 26 support respective upper and lower rolling loop transport mechanisms that are generally indicated at 32 and 34 respectively. Parts of respective film strips to be transported by the mechanisms are indicated at 38 and 40.
  • Corresponding projection lenses are indicated at 42 and 44, while a common lamphouse containing projection lamps, mirrors and associated lenses is generally indicated at 46.
  • Lenses 42 and 44 are identical wide-angle "fisheye" lenses.
  • FIG. 2 shows that the rolling loop mechanism 32 includes stator means made up of an inlet stator assembly 48 and outlet stator assembly 50 with an aperture plate 52 between the two stator assemblies. Part of a rotor of the mechanism is visible at 54. The rotor co-operates with the stator to define a film passage, and has gaps for receiving film loops, all as described in the Shaw patent. Rotor 54 is supported for rotation about a vertical axis indicated at X in Fig. 2.
  • Mechanism 32 also includes means for moving film strip 38 through the passage between the rotor and stator, in the form of driven inlet and outlet sprockets 56 and 58 respectively.
  • Mechanism 32 also includes means for
  • SUBSTITUTE SHEET locating the filmstrip in registration with the aperture in aperture plate 52, in the form of fixed film registration pins that are located adjacent the film projection aperture for engagement in the marginal perforations typically provided in motion picture film (see Fig. 7) .
  • the film is decelerated as it is located on these registration pins, by a cam unit immediately adjacent to and upstream of the aperture plate 52.
  • the cam unit of mechanism 32 is generally indicated at 60 in Fig. 2.
  • the lower rolling loop transport mechanism 34 is essentially identical with mechanism 32 and includes a film decelerating cam unit 62.
  • the two cam units are driven by a common drive shaft 63.
  • the other components of mechanism 34 are denoted by primed reference numerals corresponding to the numerals used for the components of mechanism 32.
  • the rotors 54 and 54' of the two mechanisms are identical and are positively coupled together for rotation about axis X.
  • the two rotors are rotationally offset from one another (see Fig. 3) to an extent sufficient to cause alternate projection of images from the respective filmstrips 38 and 40. However, all of the other components of the two mechanisms will be aligned with one another.
  • the two input sprockets 56 and 56 ' are aligned and are mounted on a common driven shaft 64.
  • the output sprocket 58 and the corresponding sprocket for mechanism 34 are mounted on a common drive shaft 66.
  • the two drive shafts 64 and 66 are driven from the main drive motor of the projector so that the sprockets are driven in synchronism with the other components of the projector.
  • Two separate aperture plates are in fact used for the respective mechanisms but the plates are mounted in a common housing indicated at 68.
  • the two projection lenses 42 and 44 are vertically aligned and mounted in a common housing 70.
  • the two rotors 54 and 54' are shown as seen in plan but with the lower rotor 54 ' shown as being of larger diameter than the upper rotor simply for the purpose of illustrating the rotor offset discussed previously; in fact, the two rotors are of identical diameter.
  • the gaps in the two rotors are denoted respectively by the letters G and G' and the lines denoted A and B indicate the gap offset between the respective rotors.
  • Each of the rotors is provided with a curved plate behind each gap that forms a main shutter, and with a "flicker" shutter midway between each pair of gaps, again as described in Shaw '073 patent. As a result of this shutter configuration, each frame in each filmstrip is projected twice.
  • Fig. 3 shows a practical projector in which each rotor has eight gaps and sixteen shutters.
  • the rotor offset necessary to achieve alternate eye projection is one quarter of the gap spacing.
  • the angular amount of the offset will therefore amount to one quarter of 45° (the angular spacing of the gaps). If no secondary shutters are used, the offset should be one half of the gap spacing. This amount should be further divided by two for each secondary shutter added between each adjacent pair of gaps.
  • the two lenses 42 and 44 are vertically aligned in a plane of alignment indicated at P in Fig. 2. This lens orientation ensures that the projected images are laterally co-incident on the projection screen 12 (Fig. 1) .
  • Vertical co-incidence is achieved by appropriate orientation of the projection axes of the two lenses as shown in Fig. 4. That view is a schematic illustration taken in plane P.
  • the two lenses 42 and 44 are shown as are their respective axes 42a and 44a. In this particular embodiment, image co-incidence in the vertical direction
  • SUBSTITUTE SHEET is accomplished by shifting the two lenses towards one another as indicated by arrows 64. This has the effect of deflecting the images that are projected through lens 42 so that they meet at the screen.
  • the normal "straight ahead" positions of the lenses 42 and 44 are indicated in ghost outline in Fig. 4. In these positions, the projection axes 42a and 44a would be co-incident with the respective centrelines 66 of the apertures through which the images are projected. However, the lenses are shifted towards one another to the offset positions shown in Fig. 4.
  • the offset between the aperture centrelines 66 and the respective projection axes 42a, 44a is generally denoted by arrows 68 in Fig. 4.
  • this offset will depend on the particular dimensions of the theatre and the spacing between the two projection lenses but in one practical embodiment was 0.102 millimeters (per lens).
  • the offset will normally be fixed once set and may be applied at either or both of the lenses as shown or at only one lens.
  • a technique for accomplishing this lens shift is disclosed in United States patent application Serial No. 365,633 filed June 13, 1989.
  • Figs. 5 and 6 illustrate schematically the step of alternately blocking the left and right eyes of each person viewing the motion picture in synchronism with the appearance of right-eye and left-eye images respectively on the screen.
  • the projector is generally indicated by a cylinder denoted 20 and the two views may be taken as illustrating projection of sequential frames, namely a right-eye frame 70 from the upper filmstrip 38 through projection lens 42 (Fig. 5) and a left-eye frame 72 from the lower filmstrip 40 through projection lens 44.
  • Each viewer of the motion picture is provided with a pair of
  • TITUTE SHEET glasses 74 comprising a headband 76 and respective left- eye and right-eye lenses 78 and 80 carried in a frame 82 which is suspended from the headband 76.
  • the two lenses 78 and 80 are liquid crystal cells that can be electrically actuated to alternate between an opaque state and a transmissive state.
  • the left-eye lens 78 is shown as opaque while the right-eye lens 80 is transmissive so that the viewer will see the right-eye image 70 on the screen.
  • the lens states have been reversed so that the viewer can see the left-eye image 72.
  • the circuitry includes an infrared receiver which receives infrared synchronizing signals illustrated at 86 from a transmitter 88 that is triggered in synchronism with the projection of right-eye and left-eye images from projector 20.
  • this synchronization is shown schematically as being derived from a rotary timing shutter 90 that is driven by a mechanical drive mechanism 92 from the main drive shaft of the projector.
  • Shutter 90 has peripheral notches 94 and has associated therewith an optical detector 96 that is respectively blocked and unblocked as the shutter rotates and the notches 94 move through the detector.
  • SUBSTITUTE SHEET restriction to this particular technology In principle, mechanically shuttered glasses could be used and/or a different synchronization technique could be employed (e.g. through an electrical cord).
  • projector 20 projects alternate left- and right-eye images and at the same time transmits infrared synchronizing signals to the glasses 74 so that the viewer's eyes are alternately blocked and unblocked in synchronism with the projection of the left- and right-eye images onto the screen so that a stereoscopic effect is perceived.
  • the images are projected onto the projection screen 12 at the inside surface of the dome 10.
  • the dome has the shape of a segment of a hemisphere, the centre of which is indicated at 98.
  • the overall size of the dome will depend on audience seating capacity and other factors and may, for example, be of approximately 24 metres in diameter (d) .
  • the dome has an angular extent about centre 98 of 160° defined by the two chain-dotted lines denoted 100 and 102 respectively, each of a length d/2.
  • the dome is inclined at an angle of approximately 28° indicated at 104 in Fig. 1 and defined between the horizontal and a line 106 between diametrally opposed points at the bottom of the dome-shaped surface.
  • the audience will be seated on structure 14; as such, the dome is in effect tilted down in front of the audience for better viewing the projected images.
  • each of the steps 14a of structure 14 will accommodate a row of seats.
  • Projector 20 is located within projection room 16 and is oriented so that the projection axis 108 is tilted upwardly, in this case at an angle 110 of 13.5° to a horizontal reference line R.
  • the particular wide-angle projection lenses used are designed to give a field of view represented by angle 112 of 123° comprising 35° below the projection axis 108 and 88° above that axis.
  • SUBSTITUTE SHEET lateral field of view (not illustrated) is 180°.
  • Projector 20 is located laterally so that its projections lenses 42 and 44 are located in the common vertical plane P referred to previously with plane P extending through the centre 98 of the dome.
  • the lenses are spaced from one another so that the separation between the lens axes is 101.6 millimeters. It is believed that the lenses should be positioned as close together as possible preferably at a spacing in the range 100 to 160 millimeters.
  • the projector itself is positioned slightly above the geometric centre of the dome. Specifically, the projector is located so that the projection point (the midpoint of a line joining the rear "nodal" points of the two projection lenses is located a distance (a) above centre point 98 and a distance (b) forward of that point (closer to the screen) .
  • the "nodal" points of a lens are two points on the optical axis of the lens so located that any incident ray directed at one such point will produce a parallel emergent ray directed through the other point.
  • the rear nodal point is the point closest to the film.
  • the light reflecting properties of the screen 12 are selected to provide high "gain” (defined as the relationship between the intensity of the incident and reflected light rays). This can be accomplished by a combination of surface texture and metallic paint.
  • the on- axis gain (normal to the screen surface) should preferably be in the range of 1.5 - 2.0 and the off-axis gain should taper off to levels of less than 0.5 at angles of about 40°. At angles greater than 45°, the gain should quickly decrease to avoid unwanted reflection of light onto other locations of the screen.
  • SUBSTITUTE SHEET gain projection are known in the art. For example, reference may be made to United States Patent No. 3,354,738 (Forehand, et al.) entitled "Front Projection Screen with Precision Gain Control” .
  • a high gain screen is at least highly desirable, particulary where the liquid crystal cells used in the viewing glasses (74) have relatively low light transmission properties in the transmissive state. However, high screen gain may be of less importance where the transmission properties of the cells are higher.
  • Fig. 7 shows a typical frame format that might be used for the filmstrips 38 and 40 in accordance with the method of the invention.
  • the format shown is the existing OMNIMAX format of Imax Systems Corporation.
  • the filmstrip itself is generally denoted by reference numeral 114; only one frame on the filmstrip is shown and is denoted 116.
  • the images on the filmstrip were shot using fisheye lenses, as a result of which the actual image recorded on the film has an overall shape which resembles a circle that has been flattened at the bottom as shown by the area denoted 118 in Fig. 7.
  • the film is shot using fisheye lenses and then projected using fisheye lenses, distortion of the projected image is minimized. However, in some cases, such distortion may be acceptable or even desirable, in which case the film could be shot using lenses of longer focal length which would result in a rectangular image on the film.
  • the usable image area of the frame is the rectangular area 120 between the marginal perforations 122 and within which the image area 118 is located.
  • the particular frame format shown is known as 70 mm 15 perf. because the film is 70 millimeters wide and the length of each frame corresponds to fifteen of the perforations 122 (which are of standard size and pitch) .
  • the usable image area 120 for each frame in OMNIMAX format is 3,376 sq. mm and the actual image area 118 is 2,653 sq. mm.
  • the dimen ⁇ sions of the usable image area 120 are 69.6 mm x 48.5 mm.
  • so-called 4 perf. 35 mm film has a usable image area of 306 sq. mm (20.1 mm x 15.2 mm) and the actual image where a fisheye lens is used to shoot the film is 241 sq. mm. It has been found that this frame format is unacceptable for use in the method of the invention and that the usable image area (as area 120 in Fig. 7) should be at least 1,200 sq. mm in order to achieve satisfactory resolution of the projected image.
  • OMNIMAX format film projected using a twin stacked rotor rolling loop projector refers specifically to use of OMNIMAX format film projected using a twin stacked rotor rolling loop projector, and while this film format and method of projection is preferred, others may be used. For example, two separate projectors could be employed (rolling loop or conventional) and the projected images could be brought together for projection
  • the projection screen itself should be dome- shaped as described previously, preferably but not essentially a segment of a true hemisphere.
  • the dome itself can be a non-structural screen erected within a larger building or can form a structural enclosure for the audience.
  • the images are projected from a projection point in the vicinity of the geometrical centre of the dome as discussed previously.
  • the images could be projected into the dome from outside, for example from below the bottom edge of the dome in the embodiment illustrated in Fig. 1.
  • references to the projection lenses being located in a "vertical" plane are to be interpreted as meaning that the plane is vertical relative to the normal orientation of the projector when supported on a horizontal surface. For example, if the projector were to be located on an inclined surface, the "vertical" plane would be at right angles to that surface.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

On produit des images cinématographiques tridimensionnelles haute fidélité donnant au spectateur l'impression d'une immersion dans l'image, en projetant alternativement des images ÷il gauche et ÷il droit correspondantes (70, 72) sur un écran de projection en forme de dôme (12) à partir de deux bandes de film séparées (38, 40) et à travers des objectifs à grand angle séparés (42, 44). Les objectifs sont placés proches l'un de l'autre avec leurs axes de projection situés dans un plan vertical commun (P) pour permettre une coïncidence latérale des images projetées (70, 72) et orientés dans ce plan pour assurer une coïncidence verticale des images. Chaque spectateur est équipé de lunettes (74) ayant des verres (78, 80) en forme de cellules à cristaux liquides destinées à obturer alternativement l'÷il gauche et l'÷il droit du spectateur en synchronisme avec la projection des images ÷il droit et ÷il gauche, respectivement, de façon à ce qu'un effet stéréoscopique soit perçu.
PCT/CA1990/000403 1989-11-22 1990-11-20 Procede et appareil de projection d'images cinematographiques tridimensionnelles WO1991007696A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002003661A CA2003661A1 (fr) 1989-11-22 1989-11-22 Appareil et methode pour presenter un film en 3 dimensions
CA2,003,661 1989-11-22

Publications (1)

Publication Number Publication Date
WO1991007696A1 true WO1991007696A1 (fr) 1991-05-30

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CA (1) CA2003661A1 (fr)
PL (1) PL287879A1 (fr)
WO (1) WO1991007696A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997029402A2 (fr) * 1996-01-29 1997-08-14 Alternate Realities Corporation Systemes optiques de projection hemispherique inclinables assurant une separation angulaire constante des pixels projetes et procedes de mise en oeuvre
US5724775A (en) * 1996-01-29 1998-03-10 Alternate Realities Corporation Multi-pieced, portable projection dome and method of assembling the same
US5762413A (en) * 1996-01-29 1998-06-09 Alternate Realities Corporation Tiltable hemispherical optical projection systems and methods having constant angular separation of projected pixels
WO1999056173A2 (fr) * 1998-04-27 1999-11-04 Imax Corporation Salle de cinema d'immersion et procede
EP1356349A1 (fr) * 2001-01-05 2003-10-29 Disney Enterprises, Inc. Dispositif et procede de projection sur ecran incurve
WO2010054413A1 (fr) * 2008-11-14 2010-05-20 Gast & Kunde Beteiligungsgesellschaft M.B.H. Surface de projection et scène
EP2408217A2 (fr) 2010-07-12 2012-01-18 DiagNova Technologies Spólka Cywilna Marcin Pawel Just, Michal Hugo Tyc, Monika Morawska-Kochman Procédé pour la présentation d'images 3D et appareil pour la présentation d'images 3D virtuelles
FR2969349A1 (fr) * 2010-12-20 2012-06-22 Inst Telecom Telecom Bretagne Procede de creation et de report sur un support argentique d'imagettes stereoscopiques, procede de traitement d'un tel support et dispositifs correspondants.
CN105159023A (zh) * 2015-09-28 2015-12-16 北京方瑞博石数字技术有限公司 沉浸式视网膜解析度的影院显示银幕

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555703A1 (de) * 1975-12-11 1977-06-16 Helmut Seifert Wiedergabevorrichtung fuer stereo- film- und fernsehbilder
US4354738A (en) * 1981-03-23 1982-10-19 The Singer Company Front projection screen with precision gain control
FR2626387A1 (fr) * 1988-01-25 1989-07-28 Mirica Gheorghe Systeme d'enregistrement et restitution en relief d'images cinematographiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555703A1 (de) * 1975-12-11 1977-06-16 Helmut Seifert Wiedergabevorrichtung fuer stereo- film- und fernsehbilder
US4354738A (en) * 1981-03-23 1982-10-19 The Singer Company Front projection screen with precision gain control
FR2626387A1 (fr) * 1988-01-25 1989-07-28 Mirica Gheorghe Systeme d'enregistrement et restitution en relief d'images cinematographiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SMPTE JOURNAL. vol.93, no.1, part 1, January 1984, Scarsdale, New York, US pages 14 - 17; C. Low: "Large Screen 3-D: Aesthetic and Technical Considerations" see the whole document *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6231189B1 (en) 1996-01-29 2001-05-15 Elumens Corporation Dual polarization optical projection systems and methods
WO1997029402A3 (fr) * 1996-01-29 1997-09-25 Alternate Realities Corp Systemes optiques de projection hemispherique inclinables assurant une separation angulaire constante des pixels projetes et procedes de mise en oeuvre
US5724775A (en) * 1996-01-29 1998-03-10 Alternate Realities Corporation Multi-pieced, portable projection dome and method of assembling the same
US5762413A (en) * 1996-01-29 1998-06-09 Alternate Realities Corporation Tiltable hemispherical optical projection systems and methods having constant angular separation of projected pixels
WO1997029402A2 (fr) * 1996-01-29 1997-08-14 Alternate Realities Corporation Systemes optiques de projection hemispherique inclinables assurant une separation angulaire constante des pixels projetes et procedes de mise en oeuvre
WO1999056173A2 (fr) * 1998-04-27 1999-11-04 Imax Corporation Salle de cinema d'immersion et procede
WO1999056173A3 (fr) * 1998-04-27 1999-12-29 Imax Corp Salle de cinema d'immersion et procede
EP1356349A1 (fr) * 2001-01-05 2003-10-29 Disney Enterprises, Inc. Dispositif et procede de projection sur ecran incurve
EP1356349A4 (fr) * 2001-01-05 2005-11-16 Disney Entpr Inc Dispositif et procede de projection sur ecran incurve
WO2010054413A1 (fr) * 2008-11-14 2010-05-20 Gast & Kunde Beteiligungsgesellschaft M.B.H. Surface de projection et scène
EP2408217A2 (fr) 2010-07-12 2012-01-18 DiagNova Technologies Spólka Cywilna Marcin Pawel Just, Michal Hugo Tyc, Monika Morawska-Kochman Procédé pour la présentation d'images 3D et appareil pour la présentation d'images 3D virtuelles
FR2969349A1 (fr) * 2010-12-20 2012-06-22 Inst Telecom Telecom Bretagne Procede de creation et de report sur un support argentique d'imagettes stereoscopiques, procede de traitement d'un tel support et dispositifs correspondants.
WO2012084542A1 (fr) * 2010-12-20 2012-06-28 Institut Telecom - Telecom Bretagne Procédé de création et de report sur un support argentique d'imagettes stéréoscopiques, procédé de traitement d'un tel support et dispositifs correspondants
CN105159023A (zh) * 2015-09-28 2015-12-16 北京方瑞博石数字技术有限公司 沉浸式视网膜解析度的影院显示银幕

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AU6727890A (en) 1991-06-13
CA2003661A1 (fr) 1991-05-22

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