WO1996010212A1 - Luminescent and transparent projection screen - Google Patents
Luminescent and transparent projection screen Download PDFInfo
- Publication number
- WO1996010212A1 WO1996010212A1 PCT/FR1994/001130 FR9401130W WO9610212A1 WO 1996010212 A1 WO1996010212 A1 WO 1996010212A1 FR 9401130 W FR9401130 W FR 9401130W WO 9610212 A1 WO9610212 A1 WO 9610212A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- projection screen
- screen
- transparent
- luminescent
- projection
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
Definitions
- the present invention relates to a transparent projection screen which allows a reproduction and a diffusion of a projected image in full light without chromatic and optical alteration.
- the subject of the invention is a projection screen characterized in that it comprises a transparent holographic film recorded on a laser bench according to holographic techniques.
- This film is then laminated on transparent supports such as glass plates or transparent plexiglass, which will constitute once assembled, the projection screen, which can then be installed in any exhibition space.
- This transparent projection screen provided with a recorded holographic film allows the reproduction of a two-dimensional image by reflection or by transmission with excellent light output on both sides and without loss of chromatic and optical quality. What allows, the installation of this screen, in a place from which emanates a strong external uminosity without the spectators or the televiewers being embarrassed.
- This screen can also be produced from a transparent plate coated with a photosensitive layer treated according to the same process.
- the screen can also be used for the projection of still views (slides) or cinematographic films.
- the screen will consist of a holographic photosensitive film recorded on a laser bench, the holography object of which will preferably be a white, matt and flat surface (reflecting wavelengths between 400 and 800 nanometers) .
- This process causes a particular modification of the sensitive surface, which remains transparent, since particular of the sensitive surface, which while remaining transparent, since the "object" holography is a uniform white surface acquires the property of stopping a light beam and reflect it on both sides.
- This surface will for example be a painted or frosted glass slab.
- a holographic film once recorded, it can be laminated on a glass or transparent plastic sheet.
- a projection screen of this type in order to reproduce at a lower cost, in series, a projection screen of this type, we will proceed as follows: from the holographic film thus produced, a sensitized metal plate is printed on which we will deposit nickel by electrolysis. This plate will then serve as a matrix for embossing a transparent organic film which will have the same properties as the original holographic film.
- This transparent organic film intended for embossing chosen for its resistance qualities (thermal shocks) will then be able to provide the same function as the metal plate.
- This process has the advantage of being able to produce screens from materials whose mechanical and thermal resistance can be chosen according to their use.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU78158/94A AU7815894A (en) | 1994-09-27 | 1994-09-27 | Luminescent and transparent projection screen |
PCT/FR1994/001130 WO1996010212A1 (en) | 1994-09-27 | 1994-09-27 | Luminescent and transparent projection screen |
EP94928921A EP0759184A1 (en) | 1994-09-27 | 1994-09-27 | Luminescent and transparent projection screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR1994/001130 WO1996010212A1 (en) | 1994-09-27 | 1994-09-27 | Luminescent and transparent projection screen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996010212A1 true WO1996010212A1 (en) | 1996-04-04 |
Family
ID=9459666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1994/001130 WO1996010212A1 (en) | 1994-09-27 | 1994-09-27 | Luminescent and transparent projection screen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0759184A1 (en) |
AU (1) | AU7815894A (en) |
WO (1) | WO1996010212A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2104678A (en) * | 1981-07-29 | 1983-03-09 | Singer Co | Holographic projection screen |
EP0348137A2 (en) * | 1988-06-22 | 1989-12-27 | Third Dimension Limited | Optical display apparatus |
FR2640772A1 (en) * | 1989-06-01 | 1990-06-22 | Lunazzi Jose | Procedure and device for projecting and observing differentiated or stereoscopic images, drawings, photographs, cinematographic films or videos |
US5046793A (en) * | 1989-05-26 | 1991-09-10 | Litton Systems, Inc. | Chromatically corrected directional diffusing screen |
FR2699289A1 (en) * | 1992-12-15 | 1994-06-17 | Thomson Csf | Holographic screen for forward and back-projection of images using LC projector - has holographic plate with photosensitive layer absorbing diffuse light whilst passing required light input |
FR2704076A1 (en) * | 1993-04-15 | 1994-10-21 | Cohen Jonathan Joseph | Transparent luminescent projection screen |
-
1994
- 1994-09-27 WO PCT/FR1994/001130 patent/WO1996010212A1/en active Application Filing
- 1994-09-27 EP EP94928921A patent/EP0759184A1/en not_active Withdrawn
- 1994-09-27 AU AU78158/94A patent/AU7815894A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2104678A (en) * | 1981-07-29 | 1983-03-09 | Singer Co | Holographic projection screen |
EP0348137A2 (en) * | 1988-06-22 | 1989-12-27 | Third Dimension Limited | Optical display apparatus |
US5046793A (en) * | 1989-05-26 | 1991-09-10 | Litton Systems, Inc. | Chromatically corrected directional diffusing screen |
FR2640772A1 (en) * | 1989-06-01 | 1990-06-22 | Lunazzi Jose | Procedure and device for projecting and observing differentiated or stereoscopic images, drawings, photographs, cinematographic films or videos |
FR2699289A1 (en) * | 1992-12-15 | 1994-06-17 | Thomson Csf | Holographic screen for forward and back-projection of images using LC projector - has holographic plate with photosensitive layer absorbing diffuse light whilst passing required light input |
FR2704076A1 (en) * | 1993-04-15 | 1994-10-21 | Cohen Jonathan Joseph | Transparent luminescent projection screen |
Also Published As
Publication number | Publication date |
---|---|
EP0759184A1 (en) | 1997-02-26 |
AU7815894A (en) | 1996-04-19 |
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