EP1145547A2 - Procede de creation d'un decor d'une vue frontale au moyen d'une projection frontale directe - Google Patents

Procede de creation d'un decor d'une vue frontale au moyen d'une projection frontale directe

Info

Publication number
EP1145547A2
EP1145547A2 EP00971408A EP00971408A EP1145547A2 EP 1145547 A2 EP1145547 A2 EP 1145547A2 EP 00971408 A EP00971408 A EP 00971408A EP 00971408 A EP00971408 A EP 00971408A EP 1145547 A2 EP1145547 A2 EP 1145547A2
Authority
EP
European Patent Office
Prior art keywords
projection
image
person
projectors
curvature
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.)
Pending
Application number
EP00971408A
Other languages
German (de)
English (en)
Other versions
EP1145547A3 (fr
Inventor
Klaus Hiller
Christhard Deter
Hans-Werner Kuhlmann
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.)
LDT Laser Display Technology GmbH
Original Assignee
Schneider Laser Technologies AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7927778&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1145547(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schneider Laser Technologies AG filed Critical Schneider Laser Technologies AG
Publication of EP1145547A2 publication Critical patent/EP1145547A2/fr
Publication of EP1145547A3 publication Critical patent/EP1145547A3/fr
Pending legal-status Critical Current

Links

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
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
    • G09B9/30—Simulation of view from aircraft
    • G09B9/32—Simulation of view from aircraft by projected image
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/04—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of land vehicles
    • G09B9/05—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of land vehicles the view from a vehicle being simulated

Definitions

  • the invention relates to a device for generating a scene image from the front by means of a reflected light projection, in particular for the image display in a training station or in a simulator or in an adventure world
  • a training station is known from EP 0 836 169 B1, in which three projectors generate split images that are displayed on a screen.
  • the image generated on the screen is deflected onto a projection surface by a collimation mirror and is presented to the acting person due to the optical image an image from an object plane into a
  • the projectors are arranged far behind the back of the person acting and far above their head. It is necessary to have the mirror in order to generate part of the scene at all in an area that is usually perceived from a driving position.
  • These simulators for example, are used for the Driving school training are used, the projectors are located approx. 2 m above the head of the acting person and approx. 1 meter behind the head of the acting person.This is necessary due to the optical laws of the optical image and the size of the image, because shading of the scene to be displayed exclude the front view through the person or through the construction of a driver's cabin. Such simulators are therefore very large.
  • the image projectors usually used have a shallow depth of field and do not show a satisfactory image resolution, especially at the edge of the image
  • the aim of the invention is to reduce the effort involved in the implementation of training systems, simulation systems or worlds of experience, and to reduce the reality to one
  • the invention should be suitable both for simulators with a movement system ("flying screen”) and for simulators without a movement system ("fixed screen")
  • a device for generating a scene image of a front view by means of a reflected light projection in particular for the image display in a training station or in a simulator or in a world of experience by means of a projector
  • the object is achieved according to the invention in that at least one projector has the scene image of the front view with one in lines - and image deflected, brightness and / or color-modulated light beam from a point of origin writes out within a projection cone on a projection surface and each projector is arranged so that its point of origin lies in the direction of view in front of an acting person
  • the arrangement of the projector in front of the acting person has the advantage that possible shadowing of parts of the image caused by structures or the observer is drastically reduced.
  • the projector can thus be arranged closer to the eye level of the observer. This has the particular advantage that image distortion should be relatively low Image errors can also be eliminated, the necessary corrective measures can be taken on
  • the principle of the invention can also be realized with several projectors, for example two or three, if the scene is composed of partial images
  • the principle of the invention can also be applied when two people, such as driver and front passenger, or a group of People are present projectors that line the scene with a distracted brightness and / or color-modulated light beam from a point of origin in line and image size within a
  • Imaging projection cones onto a projection surface are particularly inexpensive. They are also known under the name "laser projector". Such projectors differ fundamentally in terms of the imaging laws of the light beam from conventional image-imaging projectors, such as LCD projectors or CRT projectors. Projector "a red-green-blue light bundle for writing the pixels of a line is deflected and there is no classic optical imaging from a device-internal object plane into an image plane, considerably larger projection angles can be achieved and the distance between the projector and the projection surface can be free within wide limits With such a projector, extensive geometry corrections can be carried out so that image distortions as a result of an oblique projection or as a result of the shape of the
  • Projection area can be largely corrected Furthermore, the image of such a projector is sharp in a very large depth range, so that the projection distance to the projection area can vary greatly.
  • a projector and the corresponding correction possibilities of the image display are described in DE 197 37 374 C2
  • the scene image is corrected for the position of the eye point in relation to the projection surface, an image recording camera or an image computer recording and / or calculating the scene image for this eye point.
  • the point of origin of the projection is when a transformation optic, for example according to DE 43 24 849 C2, is used that Exit pupil of the transformation optics, otherwise, if no transformation optics are used, the
  • the projector is advantageously arranged in a position in which the point of origin of the projection beams is in front of (ventral) the frontal plane in which the eye point of the person acting is in this position, the range is possible
  • a projection surface which has at least one center of curvature is expediently used in the device.
  • the scene image of a frontal view can be represented particularly favorably with a cylindrical or curved projection surface, since the field of vision of the acting person can be completely filled with realistic image content.
  • the projection surface can be in particular the inner surface of a circular barrel body, for example a ball or a parabolic barrel body
  • An advantageous development of the invention is then to choose the geometry so that the eye point of the acting person or the point of origin of the projection beams is at a center of curvature of the projection surface can fail or even be omitted In any other position, larger image distortions occur, which can only be corrected with increased technical effort and partial loss of image quality at the bottom
  • the projection surface has more than one center of curvature, as is the case with a parabolic or barrel-shaped projection surface, it is expedient for the reasons mentioned above if the point of origin of the projection beams is in a first center of curvature and the eye point of the person acting in a second center of curvature of the projection surface draines
  • each projector should be arranged so that its projection cone also a selected level Center of curvature intersects.
  • the projector has a main projection axis, which is determined by the intersection of two planes: a horizontal plane, which is defined by its parallel position to the line direction in the center of the image height of the projection cone and by the origin of the deflected light beam, and a vertical plane, which is defined by its perpendicular Position to the line direction in the middle of the image width of the projection cone and by the origin of the deflected light beam is determined.
  • a horizontal plane which is defined by its parallel position to the line direction in the center of the image height of the projection cone and by the origin of the deflected light beam
  • a vertical plane which is defined by its perpendicular Position to the line direction in the middle of the image width of the projection cone and by the origin of the deflected light beam is determined.
  • Low image distortion is achieved if the vertical plane or the horizontal plane or both planes contain one or both of the centers of curvature.
  • the correction effort for the projection is also significantly reduced when the person acting is in a defined position relative to the projection surface. This is the case when the median plane and / or the frontal plane contains one or both centers of curvature through the eye point of the acting person.
  • At least two projectors are arranged in such a way that the main projection axes of these projectors intersect at a point which lies at the back (dorsal) of the acting person and are aligned with one another in such a way that there are two images produced on their respective side edges on the Touch the projection surface seamlessly.
  • the point of origin of the projection rays is (ventrally) one of the frontal planes of the acting person.
  • one of the excellent planes In order for there to be an intersection between the main projection axes of the projectors, one of the excellent planes, the horizontal plane or the vertical plane, must be identical for the projectors.
  • the projectors are arranged and aligned with one another in such a way that two adjacent images are placed seamlessly together on their common side edges.
  • the divided images of the projectors can be placed next to one another with pixel accuracy and then appear on the projection surface combined to form a scene image.
  • An overlap area such as with CRT projectors, is not required.
  • intersection of the main projection axes coincides with a center of curvature of the projection surface. In this case they are
  • each projector includes one or both centers of curvature of the projection surface. Then the intersection of the main projection axes does not lie in a center of curvature.
  • Projection beams of each projector transversely less than 1 meter above (cranial) the
  • the eye point of the acting person lies in relation to the transversal plane through the eye point of the acting person.
  • the simulator cabin serves as an outer shell in which, for example, a driver's cabin, one or more projectors and one or more projection surfaces assigned to these projectors are arranged.
  • a projector that works with a writing light bundle, a much larger projection angle can be realized than can be achieved with a conventional object-enlarging image projection. This has the advantage that, for example, a 180 ° projection can be realized with two projectors instead of with four CRT
  • a further advantageous embodiment of the device is that the transverse plane intersects the projection surface through the eye point of the acting person and this cutting line, seen by the acting person, lies in the range of +/- 10 ° of a further cutting line which extends through the horizontal axis of the projector the projection surface is generated.
  • Fig. 1 shows a simulator with a reflected light projection according to the general
  • FIG. 2 shows a simulator according to FIG. 1 in a top view of the operating ones
  • Fig. 3 shows a simulator with a projector for reflected light projection
  • FIG. 4 shows a simulator according to FIG. 3 in a top view of the one acting
  • FIG. 6 shows a simulator according to FIG. 5 in a top view of the one acting
  • FIG. 7 a simulator similar to FIG. 3 in a top view of the operating one
  • Fig. 1 shows a simulator for train driver training according to the prior art in the view of an acting person 7.
  • Fig. 2 shows a plan view of the simulator according to Fig. 1.
  • a movement system is not shown in the figures, for the sake of clarity true.
  • a driver's cab 10 is only drawn schematically. This should represent the driver's cab of a locomotive.
  • Projectors should be installed high above the driver's cab.
  • deflection mirrors are used according to the prior art, as is known for example from EP 0 836 169 B1.
  • the projectors are over 1 m behind and over 1 m above the position of the acting person 7 This is particularly disadvantageous if the projectors 2 and 3 are subject to the dynamics of the simulator in a "flying screen system". Then relatively massive projectors are located very far from the movement axes
  • a projection cone of approximately 2 ° to 4 ° is required in order to achieve the desired seamless joining of images 4 and 5 by the so-called "edgeblending". It is characteristic that there is an intersection point S of the main projection beams which, as in the example according to FIGS Fig. 2 can be seen, far behind the position of the acting person and far above this, and that the projection beams intersect
  • FIG. 3 shows a device according to the invention for generating a scene image with a single projector 2 in the view of the person 7 acting.
  • FIG. 4 shows the device according to FIG. 3 in plan view.
  • a single projector 2 serves to display a scene image which is larger than that der Fig 1
  • the projector is not an imaging projector, but writes with a deflected beam of light and / or color modulated from a
  • These projectors are also referred to as laser projectors.
  • An example of such projectors are also referred to as laser projectors.
  • FIG. 3 shows the substantially lower overall height of the simulator than in FIG.
  • the center of the spherical projection surface 6 lies in a vertical plane 8 of the projector 2 and in the median plane of the acting person 7. This positioning of the projector 2 and the acting person 7 reduces the correction effort for the projection of a low-distortion scene image 1.
  • the image projection if the projector 2 or the acting person 7 are as close as possible to the center of curvature M of a curved projection surface 6. In the arrangement of FIG. 4 this can be achieved in that the projector 2, the acting person 7 and the
  • Driver's cab 10 are displaced in the direction of the center M so that the point of origin of the projection is identical to the center of the projection surface.
  • This modification is shown in FIG. 7 and leads to a greater overall depth, which then corresponds approximately to that according to FIG. 2.
  • this does not result in any significant disadvantages, since the reduced height of the simulator compared to FIG. 1 is retained.
  • FIG. 5 shows the device according to the invention for generating a scene image with two projectors 2 and 3 in the view of the acting person 7.
  • FIG. 6 shows the device of FIG. 5 in a top view.
  • the projectors 2 and 3 are also arranged here in front of (ventrally) a frontal plane of the acting person 7. Furthermore, the intersect
  • FIG. 2 Main projection axes of the projectors in the center of curvature M of the partially spherical projection surface 6.
  • the center of curvature M lies further in the frontal plane containing the eye point of the person acting.
  • the projectors are arranged at a significantly lower height above the eye point of the person 7 acting.
  • FIG. 2 shows that the projectors 2 and 3 are located clearly in front of the eye point AP of the acting person 7.
  • the projectors 2 and 3 can be arranged directly above a front window of the driver's cab 10, for example in a locomotive simulator. This prevents shadowing from the driver's cabin.
  • Fig. 5 it can also be seen that the eye point AP of the acting
  • Horizontal plane 9 containing person 7 lies approximately in the vertical image center of the projected scene image 1.

Abstract

L'invention concerne un procédé de création d'un décor (1) d'une vue frontale au moyen d'une projection frontale directe, en particulier pour la représentation d'images dans une unité d'entraînement, un simulateur, ou un parc d'attractions, faisant intervenir un projecteur (2, 3). Ladite invention est caractérisée en ce qu'un ou plusieurs projecteurs (2, 3) projettent le décor (1) de la vue frontale au moyen d'un faisceau lumineux diffracté à modulation de clarté et/ou chromatique, à partir d'un point d'origine, sous forme de lignes et d'images dans un cône de projection sur une surface de projection (6), et ces projecteurs (2, 3) sont disposés dans une position dans laquelle le point d'origine des rayons de projection est situé devant le plan frontal d'une personne (7) en action.
EP00971408A 1999-11-03 2000-11-02 Procede de creation d'un decor d'une vue frontale au moyen d'une projection frontale directe Pending EP1145547A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19952896A DE19952896C5 (de) 1999-11-03 1999-11-03 Vorrichtung zur Erzeugung eines Szenenbildes einer Frontsicht durch eine Auflichtprojektion
DE19952896 1999-11-03
PCT/EP2000/010807 WO2001033841A2 (fr) 1999-11-03 2000-11-02 Procede de creation d'un decor d'une vue frontale au moyen d'une projection frontale directe

Publications (2)

Publication Number Publication Date
EP1145547A2 true EP1145547A2 (fr) 2001-10-17
EP1145547A3 EP1145547A3 (fr) 2002-09-18

Family

ID=7927778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00971408A Pending EP1145547A3 (fr) 1999-11-03 2000-11-02 Procede de creation d'un decor d'une vue frontale au moyen d'une projection frontale directe

Country Status (8)

Country Link
EP (1) EP1145547A3 (fr)
JP (1) JP2003513322A (fr)
KR (1) KR20010101368A (fr)
CN (1) CN1336073A (fr)
CA (1) CA2355323A1 (fr)
DE (1) DE19952896C5 (fr)
IL (1) IL144088A0 (fr)
WO (1) WO2001033841A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202325B4 (de) * 2002-01-23 2004-06-24 Jenoptik Ldt Gmbh Projektionsanordnung
CN110047354B (zh) * 2019-03-22 2021-01-01 湖州师范学院 一种直线投影演示方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB906042A (en) * 1957-09-23 1962-09-19 General Precision Systems Ltd Improvements in or relating to optical apparatus for creating the illusion of movement in simulated vehicles
US3718989A (en) * 1970-09-28 1973-03-06 Singer Co Aircraft simulator visual system
US3895861A (en) * 1974-09-13 1975-07-22 Us Navy Rear-screen wide-angle on-axis projection system
US4297723A (en) * 1980-01-28 1981-10-27 The Singer Company Wide angle laser display system
FR2636459B1 (fr) * 1988-09-09 1990-10-19 Thomson Csf Systeme de restitution de l'environnement visuel d'un pilote en simulateur
FR2680017B1 (fr) * 1991-07-30 1994-08-26 Thomson Csf Visuel a zone d'interet, en particulier pour simulateur.
FR2689652A1 (fr) * 1992-04-03 1993-10-08 Thomson Csf Dispositif simple de visualisation pour simulateur de véhicule à cabinet de conduite large.
DE4324849C2 (de) * 1993-07-23 1995-07-13 Schneider Rundfunkwerke Ag Videosystem zum Erzeugen eines Farbvideobilds auf einem Schirm
EP0836169B1 (fr) * 1996-09-16 1999-04-28 Oerlikon Contraves Ag Station de travail d'entraínement et son utilisation
DE19737374C2 (de) * 1997-08-27 1999-09-02 Ldt Gmbh & Co Verfahren zur Kompensation geometrischer Bildfehler bei Videobildern sowie ein Projektor zur Durchführung des Verfahrens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0133841A2 *

Also Published As

Publication number Publication date
CN1336073A (zh) 2002-02-13
DE19952896C1 (de) 2001-07-26
EP1145547A3 (fr) 2002-09-18
KR20010101368A (ko) 2001-11-14
CA2355323A1 (fr) 2001-05-10
WO2001033841A2 (fr) 2001-05-10
JP2003513322A (ja) 2003-04-08
DE19952896C5 (de) 2005-05-12
IL144088A0 (en) 2002-05-23
WO2001033841A3 (fr) 2001-12-13

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