WO1989006825A1 - An arrangement of a projection screen - Google Patents
An arrangement of a projection screen Download PDFInfo
- Publication number
- WO1989006825A1 WO1989006825A1 PCT/NO1989/000007 NO8900007W WO8906825A1 WO 1989006825 A1 WO1989006825 A1 WO 1989006825A1 NO 8900007 W NO8900007 W NO 8900007W WO 8906825 A1 WO8906825 A1 WO 8906825A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arrangement
- lamella members
- lamella
- screen
- plane
- Prior art date
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
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent 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
- G03B2227/00—Photographic printing apparatus
- G03B2227/32—Projection printing apparatus, e.g. enlarging apparatus, copying camera
- G03B2227/325—Microcapsule copiers
Definitions
- the present invention relates to an arrangement of a project ⁇ ion screen for displaying a projected image.
- the invention is mainly intended to be used for advertising or demonstration purposes, and it is intended for displaying stills and moving images.
- an object of the present invention to provide a projection screen covering the entire, or an essential part of the window area, at the same time as it permits a view of the display behind said screen.
- a projection screen which is characterized by the fact that the screen comprises a number of elongated lamella members of a dull translucent material, which are provided at a mutual distance in a common screen plane and with their own plane (the viewed surface) enclose an angle with the common screen plane.
- the lamella members are arrang ⁇ ed at such a mutual distance, and at such an angle that their projection on the common plane covers the whole plane.
- FIG. 1 is a perspective view of a screen according to the invention with lamelle 45 tilted position on the main plane of the screen
- Figure 2 shows a detail of the lamella suspension
- Figure 3 is a diagrammatical view of a back projected screen according to the invention, seen from above.
- Projecting screen 1 in Figure 1 comprises a number of lamelle 2, which are arranged at a mutual distance a.
- Lamelle 2 are provided with their longitudinal axes 3 in a common vertical plane.
- the lamella members are turnable about their axes 3, and
- Figure 2 shows an embodiment of a turnable suspension of a lamella.
- the lamella member in Figure 2 is provided with a bent back lug 4 at its upper end.
- a pin 5 extends through an aperture 6 at upper external flap 4 1 of lug 4 and a head 6 is in contact with the lower side of flap 4 1 to hold lamella 2.
- Pin 5 is attached to a slide member 7 which is slidably arranged in a slide rail 8 which may, e.g.
- the angle of lamella members 2 is adjustable by the aid of a common adjustment means which in a simple embodiment, as shown in Figure 1, may comprise two cords 9 and 10 which are secured at the lower corners of each lamella 2.
- Cords 9 and 10 are movable in the direction of arrows 11 and 12 by the aid of a common member, not shown.
- Lamella members 2 are manufactured from an opaque material, i.e. they are translucent, but not transparent. An image will, thus, appear on the screen, which may be viewed by an observer on the opposite side of the screen, as diagrammatically indicated by an eye 14, when the observ ⁇ er stands at a certain distance from the screen looking straight at the screen. If the observer moves close to the window where screen 1 is suspended, he may view a display 15 by looking in the direction of arrows 16 between lamella members 2.
- the screen may readily be removed from the window, since lamella members 2 can slide, via slides 7, to one side along slide rail 8.
- the screen By the aid of the screen according to the invention, it is, thus, possible to show advertising images and films, instructive films, and the like, at the same time as people can view a window display.
- the screen may also serve as a common sun shade. It will then be especially suitable that lamella members 2 can be placed at a desired angle to provide optimal view at the same time as sufficient sun shading is achieved.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO880150 | 1988-01-14 | ||
NO880150A NO164323C (en) | 1988-01-14 | 1988-01-14 | IMAGE SCREEN DEVICE. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989006825A1 true WO1989006825A1 (en) | 1989-07-27 |
Family
ID=19890561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1989/000007 WO1989006825A1 (en) | 1988-01-14 | 1989-01-13 | An arrangement of a projection screen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0394340A1 (en) |
JP (1) | JPH03503939A (en) |
AU (1) | AU2912489A (en) |
NO (1) | NO164323C (en) |
WO (1) | WO1989006825A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160274449A1 (en) * | 2015-03-18 | 2016-09-22 | Kabushiki Kaisha Yaskawa Denki | Screen device, image display system, and image display method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1671126A (en) * | 1927-01-14 | 1928-05-29 | William G Reeder | Change-sign apparatus |
US1791573A (en) * | 1926-11-18 | 1931-02-10 | Parolini Cesar | Device for making luminous projections in broad daylight or in a lighted room |
US3463569A (en) * | 1965-10-22 | 1969-08-26 | Freen Ltd | Rear projection screen |
-
1988
- 1988-01-14 NO NO880150A patent/NO164323C/en unknown
-
1989
- 1989-01-13 AU AU29124/89A patent/AU2912489A/en not_active Abandoned
- 1989-01-13 WO PCT/NO1989/000007 patent/WO1989006825A1/en not_active Application Discontinuation
- 1989-01-13 EP EP19890901322 patent/EP0394340A1/en not_active Ceased
- 1989-01-13 JP JP50106489A patent/JPH03503939A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1791573A (en) * | 1926-11-18 | 1931-02-10 | Parolini Cesar | Device for making luminous projections in broad daylight or in a lighted room |
US1671126A (en) * | 1927-01-14 | 1928-05-29 | William G Reeder | Change-sign apparatus |
US3463569A (en) * | 1965-10-22 | 1969-08-26 | Freen Ltd | Rear projection screen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160274449A1 (en) * | 2015-03-18 | 2016-09-22 | Kabushiki Kaisha Yaskawa Denki | Screen device, image display system, and image display method |
US10031408B2 (en) | 2015-03-18 | 2018-07-24 | Kabushiki Kaisha Yaskawa Denki | Screen device, image display system, and image display method for displaying an image with a screen part having at least one polyhedron |
Also Published As
Publication number | Publication date |
---|---|
NO164323C (en) | 1990-09-19 |
NO880150D0 (en) | 1988-01-14 |
NO164323B (en) | 1990-06-11 |
JPH03503939A (en) | 1991-08-29 |
NO880150L (en) | 1989-07-17 |
EP0394340A1 (en) | 1990-10-31 |
AU2912489A (en) | 1989-08-11 |
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