DE19601049A1 - Screen to reflect multiple images for stereoscopic films - Google Patents

Screen to reflect multiple images for stereoscopic films

Info

Publication number
DE19601049A1
DE19601049A1 DE1996101049 DE19601049A DE19601049A1 DE 19601049 A1 DE19601049 A1 DE 19601049A1 DE 1996101049 DE1996101049 DE 1996101049 DE 19601049 A DE19601049 A DE 19601049A DE 19601049 A1 DE19601049 A1 DE 19601049A1
Authority
DE
Germany
Prior art keywords
screen
segments
light rays
curvature
reflection screen
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE1996101049
Other languages
German (de)
Inventor
Sebastian Heinz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1996101049 priority Critical patent/DE19601049A1/en
Publication of DE19601049A1 publication Critical patent/DE19601049A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C9/00—Stereo-photographic or similar processes
    • G03C9/02—Parallax-stereogram
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • 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
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

The screen is used to display images from projectors which are arranged close to one another, and whose light rays are focussed vertically, and totally reflected horizontally. It may have reflecting segments (2) which form a grid pattern (1), and which may have a convex or concave vertical curvature in order to create scattering angles in the vertical plane. The segments may also have a horizontal curvature, in order to scatter light in the horizontal plane. The arrangement of the reflecting segments on the screen, so that the left and right eyes of an observer in a viewing region each receive the corresponding component of a stereoscopic image, is also discussed.

Description

Der in den Patentansprüchen 1-3 angegebenen Vorrichtung liegt das Problem zugrunde, ein oder mehrere stereosko­ pische Bilder oder Bildfolgen, beispielsweise Stereofilm­ aufnahmen, die auf den Mehrfachbild-Reflexionsschirm pro­ jiziert werden, einem oder mehreren Betrachtern räumlich (dreidimensional) erscheinen zu lassen.The device specified in claims 1-3 the underlying problem is one or more stereosco Typical images or sequences of images, for example stereo film recordings on the multi-image reflection screen pro be spatially jected to one or more viewers to make it appear (three-dimensional).

Dieses Problem wird durch die in den Patentansprüchen 1-3 aufgeführten Merkmale gelöst.This problem is solved by the in claims 1-3 listed features solved.

Hierbei ist von Vorteil, daß der Betrachter zur räumlichen Wahrnehmung keine Zusatzeinrichtung am Körper tragen muß (Beispiel Polarisationsbrille).The advantage here is that the viewer to the spatial Perception does not have to wear any additional equipment on the body (Example polarized glasses).

Gleichzeitig können mehrere Betrachter mit nur einem Mehr­ fachbild-Reflexionsschirm unterschiedliche stereoskopische Bilder oder Bildfolgen anschauen.At the same time, multiple viewers can do just one more Fachbild reflection screen different stereoscopic Look at pictures or sequences of pictures.

Ein Ausführungsbeispiel ist in den Zeichnungen dargestellt und wird im folgenden naher beschrieben.An embodiment is shown in the drawings and will be described in more detail below.

Es zeigenShow it

Fig. 1 Raster Fig. 1 grid

Fig. 2 Reflexionssegment. Fig. 2 reflection segment.

Der Mehrfachbild-Reflexionsschirm ist in einem Abstand zum Betrachter aufgestellt oder befestigt, der dem Gesamtkrüm­ mungsradius ungefähr entspricht. Je näher dieser dem Wert des Abstandes ist, desto geringer sind die Abweichungen der reflektierten Lichtstrahlen vom Sichtbarkeitsfenster. Diese Abweichungen verringern sich mit der Entfernung des Projektors zum jeweiligen Auge eines Betrachters. Das Sichtbarkeitsfenster liegt im Bereich der Senkrechten des Projektors. Aufgrund des 90-Grad-Winkels zwischen zwei zu einander zeigenden Reflexionssegmenten werden die,vom Pro­ jektor ausgehenden Lichtstrahlen bezüglich der Horizon­ talen totalreflektiert und die zeilenabhängige,vertikale Schrägstellung der Reflexionssegmente bündelt die Licht­ strahlen so, daß diese direkt in das Sichtbarkeitsfenster hineinfallen. Um die Lichtstrahlen gleichmäßig im Sicht­ barkeitsfenster zu verteilen und Helligkeitsschwankungen für den Betrachter zu vermeiden, erfolgt eine Streuung der Lichtstrahlen durch die Vertikal- und Horizontalkrümmung der Reflexionssegmente ohne daß ein benachbartes anderes Sichtbarkeitsfenster erfaßt wird.The multi-image reflection screen is at a distance from The viewer erected or fastened to the overall crumb radius approximately corresponds. The closer this is to the value the distance, the smaller the deviations of the reflected light rays from the visibility window. These deviations decrease with the removal of the Projector to the respective eye of a viewer. The Visibility window lies in the area of the vertical of the Projector. Due to the 90 degree angle between two to reflection segments pointing to each other are those of the Pro jector outgoing light rays with respect to the horizon totally reflected and the line-dependent, vertical Tilting the reflection segments focuses the light shine so that they go directly into the visibility window fall into it. To keep the light rays in view distribution windows and brightness fluctuations to avoid for the viewer, the Rays of light through the vertical and horizontal curvature of the reflection segments without an adjacent other Visibility window is captured.

Damit es für den Betrachter zu einer räumlichen Wahrneh­ mung kommt, befindet sich das linke Auge des Betrachters ausschließlich im Sichtbarkeitsfenster des Projektors für die Linkskomponente des stereoskopischen Bildes oder der Bildfolge, und das rechte Auge dieses Betrachters wird gleichzeitig von der zugehörigen Rechtskomponente über das Sichtfenster des anderen Projektors erfaßt.So that it becomes a spatial perception for the viewer mung comes, the viewer's left eye is only in the projector's visibility window for the left component of the stereoscopic image or the Sequence of images, and the right eye of this viewer will at the same time from the associated legal component the other projector's window.

Claims (3)

1. Mehrfachbild-Reflexionsschirm für mehrere nebeneinan­ der angeordnete Projektoren, deren Lichtstrahlen ver­ tikal vom Mehrfachbild-Reflexionsschirm gebündelt und horizontal von diesem totalreflektiert wird.1. Multi-image reflection screen for several side by side the arranged projectors whose light rays ver tically bundled by the multi-image reflection screen and horizontally totally reflected by it. 2. Mehrfachbild-Reflexionsschirm nach Anspruch 1, dadurch gekennzeichnet, daß der Vertikalstreuwinkel der re­ flektierten Lichtstrahlen durch den Vertikalkrüm­ mungsradius der, zum Raster (1) zusammengesetzten, konvex beziehungsweise konkav gekrümmten Reflexions­ segmente (2) festgelegt ist.2. Multiple image reflection screen according to claim 1, characterized in that the vertical scattering angle of the re reflected light rays by the vertical radius of curvature of the, to the grid ( 1 ) composed, convex or concave curved reflection segments ( 2 ) is fixed. 3. Mehrfachbild-Reflexionsschirm nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Horizontalstreuwin­ kel der reflektierten Lichtstrahlen durch den Hori­ zontalkrümmungsradius der Reflexionssegmente (2) des Rasters (1) festgelegt ist.3. Multiple image reflection screen according to claim 1 and 2, characterized in that the horizontal Streuwin angle of the reflected light rays by the Hori zontalkrümmungsradius of the reflection segments ( 2 ) of the grid ( 1 ) is fixed.
DE1996101049 1996-01-08 1996-01-08 Screen to reflect multiple images for stereoscopic films Withdrawn DE19601049A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996101049 DE19601049A1 (en) 1996-01-08 1996-01-08 Screen to reflect multiple images for stereoscopic films

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996101049 DE19601049A1 (en) 1996-01-08 1996-01-08 Screen to reflect multiple images for stereoscopic films

Publications (1)

Publication Number Publication Date
DE19601049A1 true DE19601049A1 (en) 1996-07-18

Family

ID=7782678

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996101049 Withdrawn DE19601049A1 (en) 1996-01-08 1996-01-08 Screen to reflect multiple images for stereoscopic films

Country Status (1)

Country Link
DE (1) DE19601049A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103631080A (en) * 2013-12-12 2014-03-12 北京理工大学 Periscopic three-dimensional display device based on single projector and reflective scattering screen
CN103676449A (en) * 2013-12-12 2014-03-26 北京理工大学 Non-scanningtype naked eye three-dimensional display device based on reflection-type scattering screen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103631080A (en) * 2013-12-12 2014-03-12 北京理工大学 Periscopic three-dimensional display device based on single projector and reflective scattering screen
CN103676449A (en) * 2013-12-12 2014-03-26 北京理工大学 Non-scanningtype naked eye three-dimensional display device based on reflection-type scattering screen
CN103631080B (en) * 2013-12-12 2017-01-11 北京理工大学 Periscopic three-dimensional display device based on single projector and reflective scattering screen

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Legal Events

Date Code Title Description
OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
8122 Nonbinding interest in granting licenses declared
8139 Disposal/non-payment of the annual fee