EP1399779A2 - Systeme de projection - Google Patents

Systeme de projection

Info

Publication number
EP1399779A2
EP1399779A2 EP02747207A EP02747207A EP1399779A2 EP 1399779 A2 EP1399779 A2 EP 1399779A2 EP 02747207 A EP02747207 A EP 02747207A EP 02747207 A EP02747207 A EP 02747207A EP 1399779 A2 EP1399779 A2 EP 1399779A2
Authority
EP
European Patent Office
Prior art keywords
projection
section
projection system
contact area
projection surfaces
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Withdrawn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
EP02747207A
Other languages
German (de)
English (en)
Inventor
Florian Hetmann
Rainer Herpers
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.)
Square Vision AG
Original Assignee
Square Vision 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
Application filed by Square Vision AG filed Critical Square Vision AG
Publication of EP1399779A2 publication Critical patent/EP1399779A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor

Definitions

  • the present invention relates to a projection system with at least two projection surfaces, the projection surfaces each having a front side and a rear side and forming a contact area with one of their side edges in each case.
  • Such projection systems are used, for example, to create projection spaces.
  • Multidimensional data can be visualized within these projection spaces, which are generally formed from at least three vertically extending projection surfaces, so that a three-dimensionally represented space results (virtual reality simulation environment).
  • the projection space consists of a front projection surface and side projection surfaces which laterally adjoin this front projection surface and extend in the direction of the viewer.
  • the projection surfaces are formed by screens.
  • a projector is assigned to each screen, which projects a part of the overall image.
  • the projectors are controlled using special software so that a coherent three-dimensional image is created.
  • the user stands within the projection space and is completely surrounded by the three-dimensional world shown and is virtually integrated into it.
  • the projectors can project their images onto the side facing the viewer, or so-called rear projection screens can be used, onto which the image is projected from the rear and shines through it.
  • canvases are merely placed next to one another, so that the three-dimensional effect is considerably disturbed by the inevitable gap between the canvases. This is due, among other things, to the fact that projection rooms of this type generally have to be designed to be removable so that they can be assembled and disassembled at different locations.
  • the object of the present invention is to provide a removable projection system in which the projection surfaces are arranged in such a way that an image that is as undisturbed as possible can also be generated in the contact area.
  • the projection system should be easy and quick to assemble or disassemble and be easy to transport. It should continue to be easy and inexpensive to manufacture.
  • edge regions of the projection surfaces are connected to one another in such a way that the front sides of the edge regions lie one on top of the other and thus the contact region is formed by folding lines from the folded projection surfaces, b) the edge regions of the projection surfaces are continuously connected to one another over an entire length of the contact region , c) the clamping section is fastened to a rigid holding element running approximately parallel to the contact area.
  • the contact area is thus sharp and has no gap.
  • the term “contact area” is to be understood as the contact between two projection surfaces that can be seen by the viewer. That by the or Image generated in projectors is not disturbed in the contact area by elements located in the beam path of the projector or projectors.
  • the projection system according to the invention is particularly suitable for the formation of a removable, three-walled projection space, in which three-dimensional projection spaces with a size of approx. 3 x 2.25 m, which are arranged in front of, to the left and to the right of the viewer, d. H. Scenes can be displayed with 3D information.
  • the projection area formed by one or more screens has a total size of 9 x 2.25 m.
  • the canvases are stretched smoothly and do not create any folds or waves, they are integrated into a frame construction.
  • the edge areas of the projection surfaces which should each have contact with an adjacent screen, are folded over in the direction of the back of the projection surfaces and each with an edge area folded over in the same way adjacent projection surface connected. From the point of view of the beholder, an immediate transition of the front sides of two projection surfaces is thus achieved.
  • the edge areas connected to one another on the rear sides of the projection surfaces are braced against a rigid holding element.
  • This holding element can in particular be a removable rod, advantageously made of steel or light metal.
  • edge regions connecting the contact area of the projection surfaces and the holding element run in the bisector of the angle enclosed by the two projection surfaces. This means that when the two projection surfaces are braced into the of direction of the holding element, ie in the direction of the front of the projection surfaces, these are stretched and aligned optimally and prevent creasing.
  • the two edge areas can be connected by gluing or sewing.
  • Other connection options can also be used as long as the connection runs continuously over the entire contact area, since it is precisely this continuous course that prevents creasing.
  • the projection surfaces can also be implemented by a continuous one-piece screen.
  • a non-permanent type of connection can be selected as the type of connection of the edge regions which extend to the rear, that is to say in the direction of the rear sides of the projection surface.
  • the edge regions can, for example, be passed through a gap located between two profile bars and held by subsequent closing of the gap.
  • the free ends of the edge areas are braced against the rigid rod, which can be done by moving the canvas in the direction away from the rod.
  • the edge areas can be attached to the rod by starting from the contact area of the two projection surfaces on the back, first passing a region of the edge areas through the profile rods and then connecting a sufficiently large loop into which the rod can be inserted.
  • the projection surfaces can also be sewn or glued together. Disassembly is then achieved by pulling the rod out of the loop or inserting it into it.
  • the projection surfaces themselves are clamped in a frame, which ensures the necessary tightening and smoothing of the material. It is particularly advantageous if the canvas can be clamped into the frame, which can be made of light metal, for example, with the aid of button strips or push-button connections. The smallest possible distance between the buttons or snaps must be selected so that the material is tightened as evenly as possible.
  • the projection system can be assembled, for example, by first inserting the rods into the loops resulting from the edge regions and then inserting them into a floor element.
  • This floor element also serves as a connecting element for the frame of two adjacent projection surfaces.
  • the side projection surfaces can be pivotally attached to the floor element.
  • the canvas material is then buttoned into the frame and the side projection surfaces finally pivoted into the correct position.
  • the pivoting of the side projection surfaces simultaneously leads to tension in the entire projection surface.
  • projection means are suitable, as are known, for example, from US Pat. No. 4,003,080 and European Patent Application 0 938 694.
  • FIG. 1 a projection system in perspective
  • FIG. 2 a first embodiment variant according to the invention of a contact area of the projection surfaces in section
  • FIG. 3 a second embodiment variant of the configuration of the contact area according to the invention in section
  • FIG. 4 a third embodiment variant of the configuration of the contact area according to the invention in section
  • FIG. 5 an embodiment variant of the bracing of the projection system in a perspective view
  • Figure 6 an inventive connecting element from below.
  • FIG. 1 shows a possible basic structure of a projection system 1.
  • This advantageously consists of three projection surfaces 2, one of which forms a front projection surface 4, to each of which a side projection surface 8 angled in the direction of an observer 6 is connected on two opposite sides.
  • the viewer 6 thus stands in front of the front projection surface 4, to which side projection surfaces 8 are connected on the right and left.
  • the front projection surface 4 and the side projection surfaces 8 can also be aligned at right angles to one another be so that a kind of square space is formed in which the viewer 6 is positioned.
  • Sub-images of the overall image appear on each of the projection surfaces 4, 8, as a result of which the viewer 6 is completely enclosed and integrated into the three-dimensional world shown.
  • the three-dimensional representation is advantageously calculated in real time, ie it is not videos or rigid images that are shown, but interactive scenes.
  • the projection surfaces 2 are formed from a continuous screen or from several screens.
  • these are so-called rear projection screens, onto which images are generated from a rear side 12 with the aid of powerful projectors 14 or so-called projectors, which can be seen by a viewer 6 from a front side 16.
  • reflecting screens can also be used, onto which the image is projected from the front 16.
  • the projection surfaces 2 are installed in such a way that their contact areas 18, which result from the joining of side edges of the projection surfaces 2, are as sharp as possible.
  • the projected images of two projection surfaces 2 should merge directly into one another in the contact area 18, so there should not be any disruptive frames or elements disrupting the beam path of the projector.
  • the canvas is therefore held in a frame 22, preferably a tenter frame.
  • the canvas can be inserted into this frame with the aid of buttons, push buttons, zippers or the like. The formation of bumps such as waves should be avoided because these negatively affect the quality of the projected image.
  • the frame or frames 22 can be removed from plastic or metal, in particular light metal. Standard parts from a stand construction system (multitube pipe system) can prove to be suitable.
  • the maximum component length is 150 cm.
  • the small size of the individual components makes transportation and assembly much easier.
  • a car station wagon or a small van is sufficient as a means of transport.
  • adjustable feet 24 with a height of their cantilever legs of maximum 20 mm are used, which do not cover the required projection surface 2.
  • the projection area size of a projection area 2 is 3 ⁇ 2.25 m, without the projected image being covered at the contact areas 18.
  • the inventive and advantageous creation of a sharp contact area 18 is explained with reference to Figures 2, 3 and 4.
  • the projection surfaces 2 have edge regions 26 which are folded over in the region of the mutually aligned side edges in the direction of the rear side 12 of the projection surfaces 2 and are subsequently connected to one another.
  • the front sides 16 of two projection surfaces 2 thus lie one on top of the other.
  • These superimposed edge areas 26 are continuously connected to one another over the entire length of the contact area 18 and form a clamping section 27.
  • This clamping section 27 pointing in the direction of the rear side 12 of the projection surfaces 2 is to create a sharp contact area 18 on a holding means which runs essentially parallel to the contact area 18 28 attached.
  • This holding means 28 can be a rod made of plastic or light metal and is rigid, that is, in the direction the back 12 or the front 16 is not movable.
  • the canvas can thus be stretched on the holding means 28 by pulling in the direction of the front side 16.
  • the clamping section 27 advantageously runs along an bisector of an angle ⁇ enclosed by the projection surfaces 2.
  • the frame or frames 22 are rigid and immovable and the canvas can be stretched by moving the holding means 28.
  • FIGS. 2, 3 and 4 show different possibilities for fastening the clamping section 27 to the holding means 28.
  • edge regions 26 it is possible to sew or glue the edge regions 26 to one another and releasably connect them with the aid of a zipper, push buttons or the like to a tab 30 which is firmly connected to the holding means 28.
  • FIG. 3 shows the possibility of releasably bracing the tensioning section 27 of two screens.
  • the edge regions 26 are inserted between two clamping means 32, for example flat iron, running parallel to the desired contact region 18 and are held by bringing the clamping means 32 together, for example with the aid of spring force or the like.
  • the clamping means 32 are in turn firmly connected to the holding means 28.
  • Figure 4 shows a particularly advantageous embodiment of the arrangement according to the invention.
  • a continuously continuous screen is used for all, preferably three, projection surfaces 2.
  • the canvas is in each case around the holding guided means 28 and connected between the holding means 28 and the projection surfaces 2.
  • a loop 34 is formed.
  • sewing or gluing of the edge regions 26 is appropriate, whereby tensioning may also be possible.
  • the assembly is then carried out, for example, by inserting the holding means 28, in particular a rod, into the loop 34.
  • the canvas is thus pre-assembled with two loops 34.
  • FIG. 5 shows a basic illustration of a further possibility for optimizing the contact area 18.
  • the tensioning section 27, which extends from the contact area 18 to the holding means 28, can be designed in such a way that deflection of the holding means 28 during the tensioning is compensated for.
  • a width B2 in the outer region of the clamping section 27 exceeds a width Bi in the central region of the clamping section 27.
  • the exact cut of the connected edge regions 26 can be determined when the project system 1 is installed for the first time, so that the dimensions in a second or later construction are optimally coordinated.
  • the cutting of the clamping section 27 can be adapted accordingly.
  • FIG. 6 shows a connecting element 36 from below, which is connected to the holding means 28 (not shown here) and two frames 22.
  • a frame rod 38 is connected to a first semicircular section 37 and a second semicircular second section 39.
  • the first section 37 is rigidly integrated into the projection system 1, the second section 39, on the other hand, is pivotably mounted relative to the first section 37.
  • a pivot axis S runs along the centers of rotation M of both sections 37, 39.
  • the fixed first section 37 has in its outer region an elongated hole 40 which extends along the circumference, through which extends a screw section fastened to the pivotable second section 39, on which in turn a nut 42 is screwed on.
  • the pivotable section 39 can be pivoted, the pivoting movement being limited by the stop of the screw section on end edges of the elongated hole 40.
  • the elongated hole 40 is designed such that the canvas is optimally stretched when the screw section strikes an end edge of the elongated hole 40.
  • the projection system 1 according to the invention can be produced in a cost-saving manner, with good transportability being provided in the disassembled state. Assembly and disassembly is quick and easy.
  • the projection system 1 can be set up on the ceiling, walls or the floor of the respective installation room without further attachment.
  • the contact area 18 is sharp and allows an optimal representation of the image or images.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un système de projection (1) comportant au moins deux surfaces de projection (2) présentant chacune un côté avant (16) et un côté arrière (18), lesdites surfaces formant une zone de contact (18) avec une de leurs arêtes latérales respectives. Des zones périphériques (26) des surfaces de projection (2) sont reliées afin de former une section de tension (27) de manière que les côtés avant (16) des surfaces de projection (2) s'appuient l'un contre l'autre, et que la zone de contact (18) soit par conséquent constituée de lignes de pliage des surfaces de projection repliées (2). Les zones périphériques (26) des surfaces de projection (2) sont reliées en continu sur toute la longueur de la zone de contact (18), et la section de tension (27) est fixée à un élément de maintien fixe (28) s'étendant parallèlement à la zone de contact (18).
EP02747207A 2001-06-13 2002-06-10 Systeme de projection Withdrawn EP1399779A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10128347 2001-06-13
DE2001128347 DE10128347A1 (de) 2001-06-13 2001-06-13 Projektionssystem
PCT/DE2002/002104 WO2002101452A2 (fr) 2001-06-13 2002-06-10 Systeme de projection

Publications (1)

Publication Number Publication Date
EP1399779A2 true EP1399779A2 (fr) 2004-03-24

Family

ID=7687953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02747207A Withdrawn EP1399779A2 (fr) 2001-06-13 2002-06-10 Systeme de projection

Country Status (3)

Country Link
EP (1) EP1399779A2 (fr)
DE (1) DE10128347A1 (fr)
WO (1) WO2002101452A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036391A1 (de) * 2007-07-31 2009-02-05 Zink, geb. Hopp, Armin, Dr. Leinwandanordnung zur Projektion einer dreidimensionalen Illusionswelt
CN105143975A (zh) * 2013-04-30 2015-12-09 Cjcgv株式会社 具有包括非固体材料的投影表面的多投影系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB444824A (en) * 1934-10-02 1936-03-30 Edward George Turner Improvements relating to projection screens for cinematographs
EP0514045A1 (fr) * 1991-05-13 1992-11-19 Hughes Aircraft Company Dôme à plusieures facettes pour projection par transparence

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751807A (en) * 1929-01-24 1930-03-25 Hannibal C Ford Foldable screen
US3277781A (en) * 1965-06-17 1966-10-11 Guilford L Moutray Tri-fold rear projection screen
US3601916A (en) * 1969-10-13 1971-08-31 Weight Watchers International Paperboard foldable screen
US5734513A (en) * 1996-04-03 1998-03-31 Industrial Technology Research Institute Electronic apparatus with a foldable display

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB444824A (en) * 1934-10-02 1936-03-30 Edward George Turner Improvements relating to projection screens for cinematographs
EP0514045A1 (fr) * 1991-05-13 1992-11-19 Hughes Aircraft Company Dôme à plusieures facettes pour projection par transparence

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO02101452A3 *

Also Published As

Publication number Publication date
DE10128347A1 (de) 2003-01-09
WO2002101452A2 (fr) 2002-12-19
WO2002101452A3 (fr) 2003-08-21

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