DE19859855C1 - Accessory for video projectors for 3D projection of moving stereo images has retardation filter, mirrors adjusted so polarization direction of light from only one stereo half image is rotated - Google Patents
Accessory for video projectors for 3D projection of moving stereo images has retardation filter, mirrors adjusted so polarization direction of light from only one stereo half image is rotatedInfo
- Publication number
- DE19859855C1 DE19859855C1 DE19859855A DE19859855A DE19859855C1 DE 19859855 C1 DE19859855 C1 DE 19859855C1 DE 19859855 A DE19859855 A DE 19859855A DE 19859855 A DE19859855 A DE 19859855A DE 19859855 C1 DE19859855 C1 DE 19859855C1
- Authority
- DE
- Germany
- Prior art keywords
- stereo
- light
- polarization direction
- projection
- attachment
- 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.)
- Expired - Fee Related
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
- H04N13/363—Image reproducers using image projection screens
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- 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
-
- 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
- H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Description
Bewegte Stereobilder sind bisher über aufwendige Hardware, wie z. B. Workstations mit 3-D- Graphikoptionen und frequenzgesteuerten LC-Brillen, am Bildschirm bzw. durch die Nutzung von teuren Mehrstrahlgeräten auf Projektionsflächen zugänglich (US 45 04 856 sowie IWASAKI et al. 3-Dimensional Personal Computersystem. In: IEEE Transactions on Consumer, Electronics, Vol 34, No 3 August 1988; S. 536-542)Moving stereo images are so far on expensive hardware, such as. B. Workstations with 3-D Graphics options and frequency-controlled LC glasses, on the screen or through use accessible from expensive multi-jet devices on projection surfaces (US 45 04 856 and IWASAKI et al. 3-dimensional personal computer system. In: IEEE Transactions on Consumer, Electronics, Vol 34, No 3 August 1988; Pp. 536-542)
Alternative Lösungen durch Verwendung eines optischen Vorsatzes für Einstrahl- Videoprojektoren wurden als Prismenkonstruktion in JP 09281616 oder als Spiegelkonstruktion in DE 196 08 362 vorgestellt.Alternative solutions by using an optical attachment for single-beam Video projectors have been described as prism construction in JP 09281616 or as Mirror construction presented in DE 196 08 362.
Der im Patentanspruch angegebenen Erfindung liegt das Problem zugrunde, durch einen verbesserten Vorsatz für einen Einstrahl-Videoprojektor bewegte Stereobilder auf einer polarisiertes Licht reflektierenden Leinwand zu erzeugen, die mit einer einfachen Polarisationsbrille betrachtet werden.The invention specified in the claim is based on the problem by improved header for a single-beam video projector moving stereo images on one to produce polarized light reflective canvas with a simple Polarizing glasses can be considered.
Dieses Problem wird durch die im Patentanspruch aufgeführten Merkmale gelöst.This problem is solved by the features listed in the claim.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass die bisherige Konstruktion wesentlich vereinfacht und die Qualität der 3-D-Bildwiedergabe signifikant verbessert wird. Dies wird vor allem dadurch erreicht, dass ein feststehender Spiegel sowie zwei Polarisationsfilter entfallen und ein Retardationsfilter genutzt wird. Dadurch wird die Lichtabsorption des einen Stereo-Halbbildes deutlich und die des anderen sogar auf Null reduziert, so dass brillanterer 3-D-Bilder projiziert werden. Dies hat auch den positiven Effekt, dass die Präsentationsräume nicht so stark abgedunkelt werden müssen. Außerdem ist der Justieraufwand bei dem neuen Vorsatzteil geringer. Der optische Vorsatz kann prinzipiell auf jeden LCD-Einstrahl-Videoprojektor aufgesetzt werden. Die mit einer Graphiksoftware bzw. einer Stereokamera räumlich nebeneinander erzeugten Stereo- Halbbilder sind alternativ von einer Videokassette bzw. On-line per PC oder Graphikworkstation über den Videoprojektor darstellbar.The advantages achieved with the invention are in particular that the previous one Construction significantly simplified and the quality of 3D image reproduction significantly is improved. This is mainly achieved by having a fixed mirror as well two polarization filters are omitted and a retardation filter is used. This will make the Light absorption of one stereo field clearly and that of the other even to zero reduced so that more brilliant 3-D images are projected. This also has the positive Effect that the presentation rooms do not have to be darkened so much. Besides, is the adjustment effort for the new front part is lower. The optical attachment can in principle can be placed on any LCD single-beam video projector. The with graphics software or a stereo camera Fields are alternatively from a video cassette or on-line via PC or Graphics workstation can be displayed on the video projector.
Die Entwicklung bietet insbesondere für die Vortragstätigkeit, z. B. in Lehre und Forschung sowie im Schulunterricht, einen einfachen Zugang zur Projektion von bewegten Stereobildern. Derartige Präsentationen sind vor allem für die Vermittlung des räumlichen Sehens bewegter Bilder in der Chemie, Biochemie, Medizin und Architektur von besonderem Interesse.The development offers especially for lectures, e.g. B. in teaching and research as well as in school lessons, easy access to the projection of moving stereo images. Such presentations are particularly moving for the mediation of spatial vision Images of particular interest in chemistry, biochemistry, medicine and architecture.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and is in the following described in more detail.
Fig. 1 zeigt eine Skizze des optischen Vorsatzteils in Draufsicht. Fig. 1 shows a sketch of the optical front part in plan view.
Mittels eines optischen Vorsatzes (Fig. 1) für einen linear polarisiertes Licht ausstrahlenden Videoprojektor (1) bestehend aus zwei drehbar angeordneten Spiegeln (2) und einem entsprechend positionierten Filter mit einer Retardationsfolie (3), die so zueinander justiert sind, dass die Polarisationsrichtung des Lichtstrahles nur von einem Stereo-Halbbild um 90° gedreht wird und die beiden räumlich nebeneinander erzeugten Stereo-Halbbilder der stereoskopischen Darstellung auf einer Projektionsfläche (5) aufeinander projiziert werden. Am Vorsatz ist eine Blende (4) derart angebracht, dass dadurch durch Streulicht vom Vorsatz auf die Ränder der Projektionsfläche hervorgerufene störende Reflexionen verhindert werden. Mit Hilfe einfacher Polarisationsbrillen und unter Verwendung einer polarisiertes Licht reflektierenden Projektionsfläche können die 3-D-Bilder betrachte werden.By means of an optical attachment ( Fig. 1) for a linearly polarized light emitting video projector ( 1 ) consisting of two rotatably arranged mirrors ( 2 ) and a correspondingly positioned filter with a retardation film ( 3 ), which are adjusted so that the polarization direction of the Light beam is only rotated by 90 ° from a stereo field and the two stereo fields of the stereoscopic representation generated next to one another are projected onto one another on a projection surface ( 5 ). A diaphragm ( 4 ) is attached to the attachment in such a way that disturbing reflections caused by scattered light from the attachment on the edges of the projection surface are prevented. With the help of simple polarizing glasses and using a polarized light reflecting projection surface, the 3-D images can be viewed.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19859855A DE19859855C1 (en) | 1998-12-23 | 1998-12-23 | Accessory for video projectors for 3D projection of moving stereo images has retardation filter, mirrors adjusted so polarization direction of light from only one stereo half image is rotated |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19859855A DE19859855C1 (en) | 1998-12-23 | 1998-12-23 | Accessory for video projectors for 3D projection of moving stereo images has retardation filter, mirrors adjusted so polarization direction of light from only one stereo half image is rotated |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19859855C1 true DE19859855C1 (en) | 2000-07-06 |
Family
ID=7892528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19859855A Expired - Fee Related DE19859855C1 (en) | 1998-12-23 | 1998-12-23 | Accessory for video projectors for 3D projection of moving stereo images has retardation filter, mirrors adjusted so polarization direction of light from only one stereo half image is rotated |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19859855C1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4504856A (en) * | 1982-09-29 | 1985-03-12 | Honeywell Inc. | Stereo television system |
US5270751A (en) * | 1989-09-13 | 1993-12-14 | Christian John A | Steroscopic optical apparatus for use with television and video recording equipment |
DE19525871C1 (en) * | 1995-07-15 | 1996-06-27 | Christian Dilk | Electronic stereo image recording system |
DE19608362C1 (en) * | 1996-03-05 | 1997-04-10 | Univ Halle Wittenberg | Optical system for video projector for moving 3-dimensional stereo images |
JPH09281616A (en) * | 1996-04-19 | 1997-10-31 | Sony Corp | Video projecting device, adapter device therefor and optical member |
DE69219434T2 (en) * | 1991-11-05 | 1998-01-22 | Sharp Kk | A three-dimensional imaging system |
-
1998
- 1998-12-23 DE DE19859855A patent/DE19859855C1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4504856A (en) * | 1982-09-29 | 1985-03-12 | Honeywell Inc. | Stereo television system |
US5270751A (en) * | 1989-09-13 | 1993-12-14 | Christian John A | Steroscopic optical apparatus for use with television and video recording equipment |
DE69219434T2 (en) * | 1991-11-05 | 1998-01-22 | Sharp Kk | A three-dimensional imaging system |
DE19525871C1 (en) * | 1995-07-15 | 1996-06-27 | Christian Dilk | Electronic stereo image recording system |
DE19608362C1 (en) * | 1996-03-05 | 1997-04-10 | Univ Halle Wittenberg | Optical system for video projector for moving 3-dimensional stereo images |
JPH09281616A (en) * | 1996-04-19 | 1997-10-31 | Sony Corp | Video projecting device, adapter device therefor and optical member |
Non-Patent Citations (1)
Title |
---|
Iwasaki et al.:"3-Dimensional Personal Computer System", In: IEEE Trans. on Consumer Electronics, Vol. 34, No.3, Aug. 1988, S. 536-542 * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CODIXX AG, 39179 BARLEBEN, DE |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |