WO1998036320A1 - Device for representing static and moving images using a screen, screen and representation and production method - Google Patents

Device for representing static and moving images using a screen, screen and representation and production method

Info

Publication number
WO1998036320A1
WO1998036320A1 PCT/EP1998/000664 EP9800664W WO9836320A1 WO 1998036320 A1 WO1998036320 A1 WO 1998036320A1 EP 9800664 W EP9800664 W EP 9800664W WO 9836320 A1 WO9836320 A1 WO 9836320A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
screen
layer
light
according
ƒ
Prior art date
Application number
PCT/EP1998/000664
Other languages
German (de)
French (fr)
Inventor
Claus-Peter Klages
Michael Vergöhl
Andreas Weber
Albert Engelhardt
Original Assignee
Ldt Gmbh & Co. Laser-Display-Technologie Kg
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3129Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/567Projection screens for colour projection
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/60Projection screens characterised by the nature of the surface
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/16Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00Miscellaneous advertising or display means not provided for elsewhere
    • G09F19/12Miscellaneous advertising or display means not provided for elsewhere using special optical effects

Abstract

The invention relates to a device for representing static or moving images using a screen. Said device comprises one or several monochromatic laser light sources whereby laser light from the laser light sources projects onto the screen. Said screen performs selective spectral reflection, is essentially dark in aspect, remains unaffected by parasitic light of a wavelength differing from those of the monochromatic laser light, and strongly reflects the monochromatic laser light.

Description

Apparatus for representation of static and moving images, using a projection screen, projection screen and method for displaying and for the preparation

The invention relates to a device for displaying static or moving images using a projection screen, the projection screen for use in such an apparatus, a method for displaying static or moving images using the screen, and the apparatus, and a method for manufacturing the screen.

Devices for displaying static or moving images using a screen are known, for example as a slide projector or movie projectors. To projected images to view unaffected as possible by daylight or artificial lighting, the reflection of disturbing light should be minimized. The invention is based on the finding that with a flat front projection of color images with monochromatic light, such as may be produced, for example, lasers (Laserfemsehen, film projection with laser light sources) are desirable projection or screens which show a strongly wavelength-selective reflection characteristics. Under front projection is to be understood 190 45 part 4 in the sense of DIN that the viewer on the same side of the canvas or screen is located as the projector. The reflection should therefore in the range of wavelengths corresponding to the radiation from the monochromatic light sources, such as the laser light sources used, which emit, for example, a red, green and blue radiation, not be low. At these wavelengths, the reflection in general should be very high. For blue light, the wavelengths are about 430 to 460 nm for green light at about 510 to 540 nm and for red light at about 620 to 630 nm. Such selective reflection should (for a radiation angle 8 2 defined in DIN

190 45, part 4) be placed in a range of up to + 45 degrees (see also DIN 19045, Part 2). The object underlying the invention is to provide a device for displaying static or moving images using a screen, the screen itself, a method of displaying static or moving images by using the screen as well as a process for preparing the screen, wherein the static or moving images on the screen or other ambient light or stray light to be perceived clearly and undisturbed by the day, even in daylight. An occurring in known projection screens effect that the light incident on the projection screen daylight or other ambient light is also reflected from the wall and as an interference light enters the eye of the viewer, so that the image appears to be eclipsed, is to be avoided.

The object is achieved by a device according to the preamble of claim 1 in that the device comprises one or more monochromatic laser light sources that a front projection is provided by the laser light of the laser light sources on the screen, and that the screen is spectrally selectively reflecting, wherein they unaffected effect of disturbance light deviates from the wavelengths of the monochromatic laser light wavelength is substantially dark, and the monochromatic Laseriicht strongly re- flexed. The object is achieved by a projection screen for use in such a device characterized in that the screen is spectrally selectively reflecting and has a contrast which is in the range of wavelengths it λoi monochromatichen laser light exceeds a predeterminable or predetermined threshold value, wherein the contrast K (λ 0 ι) the ratio value of medium spatially integrated reflectance R (λ 0 ι) to the Y-tristimulus value. The object is achieved by a method for displaying static or moving images using a screen, and an above-mentioned device in that the images through Abrastem the screen surface with one or more temporally modulated laser beams or by spatial modulation of one or more flared laser beams, in particular by an LCD matrix, or in the manner of a projection of a provided on a transparent carrier material image using the light of one or more flared laser beams are generated. Such a carrier material with image may be, for example, a slide or a film of an overhead projector. The object is achieved by a method for manufacturing such a screen by providing a substantially flat or provided with a topography of substrate is either transparent for all wavelengths of visible light, or with a lichtsabsorbierenden coating is provided, and that a multi-layer system on the substrate is or indirectly applied. Further developments of the invention are defined in the respective subclaims.

Characterized a device with a screen, and a screen will provide overall, in which the reflectance of the screen as high as possible (ideally R = 100%) (for the wavelengths of the monochromatic laser light, in particular red, green and blue radiation, referred to as RGB - wavelengths) and as low as possible for other wavelengths (ideally R = 0). Preferably, the

Reflection as a function of radiation angle 8 2 a selectable within certain pre-defined limits angle characteristic.

Preferably, a surface of a screen, in particular a substrate, first highly absorbent, ideally colored black. preferably transparent layers, which are applied to the highly absorbent substrate, increasing the reflectivity at the wavelengths of the electromagnetic spectrum, which are emitted from the Laseriicht or from the laser light sources is subsequently using a multilayer system with a plurality of.

Alternatively, it is possible to use a transparent for all wavelengths of visible light substrate and in particular additionally lowers to this, as already described, to apply a multi-layer system, which increases the reflectivity for the wavelength of the monochromatic laser light and those outside this wavelength range, similarly to the effect of Aritirefiexschicht.

The multi-layer system may be the one applied directly to the absorbent or transparent substrate. Secondly, the multi-layer system may be a component of a pigment which is applied for example in a transparent lacquer layer on the substrate.

Characterized a screen is provided which spectrally selective strongly reflected the light emitted by the monochromatic laser light sources of laser light, but at the same time, in comparison to a known image projection or wall has greatly lowered brightness (see also DIN 50 32). As a result of the thereby occurring increased contrast a representation of static and moving images on the screen is made possible such that the observer can perceive those images in daylight. Ideally, the screen for the viewer's eye under normal daylight appears black, but provides for the monochromatic Laseriicht the same reflection as a white screen.

a spatially integrated reflection for the RGB light of respectively at least 50% and an average over the visible spectral range of reflection of a maximum of 40% is particularly preferably selected.

For generating the spectral selectivity of the screen, two methods can be applied Alternatively preferably. In a first method, the screen may be particularly preferably coated with a coating effect, which in a transparent organic matrix embedded pigments, especially platelet-shaped pigments contains. The pigments are provided with interference layers so that they are highly reflective in one or more of the RGB wavelength regions, and only weakly reflect in the other wavelength ranges.

Preferably, the painting process is chosen so that the pigments comprise in the resist layer a defined angular distribution of their surface normal to the perpendicular to the screen around. The Winkeiverteilung can (rotationally) be symmetric or unbalanced. The totality of the embedded in the resist layer on the screen pigments can thereby selectively reflect light emitted from the laser light. In the light, however, having a continuous distribution of the wavelengths over a larger area, as ambient light or backlight does, the pigments preferably have a low brightness.

suitable for this invention using pigments have examples play, on a transparent carrier material, in particular glass flakes or mica flakes and a one or both sides applied multi-layer system. This may consist of at least two transparent layer materials having different refractive indices. These two coating materials are then preferably brought up alternately on the substrate. The desired selective reflection for example, red, green or blue light can, depending on the Schichtsystemart, optionally by a single RGB pigment, by a mixture of two pigments (RG + B or R + GB or RB + G) or by a mixture of three pigments (red and green and blue) are met.

The pigments which consist of a support material having thereon aufgefügtem suitable multilayer system can be preferably hold by the deposition of inorganic materials such as oxides, from liquids by chemical or physical vapor deposition ER. The wet-chemical and chemical vapor deposition are preferably used for the production of effect pigments. For the inventive use with a screen, a physical vapor deposition (PVD, physical vapor Deposition) method is particularly preferably provided. The physical vapor deposition allows the deposition of very dense, stable layers with good reproducibility. Particularly preferred is a adapted for the coating of bulk sputtering process may be employed.

Alternatively, it is also possible to produce an appropriate interference pigment without a supporting substrate solely by a PVD process, a suitable layer sequence is first applied to a, for example, strip-shaped substrate and then peeled from the substrate and comminuted. Such a method is used, for example, by the company Flex Products. Alternatively to the use of a selectively reflexionserhδhenden pigment which is coated on a highly absorbent or transparent substrate in a transparent lacquer layer, a correspondingly predefined area or a corresponding substrate may be provided directly with a suitable multi-layer coating system. this blackening of the substrate is first carried out, for example, by a suitably chosen lacquer, preferably. Subsequently, the blackened substrate may be subjected to a coating process itself, wherein a layer system is applied to the blackened substrate having the gewünschen optical properties. a vapor deposition method or a sputtering method may proceed as coating preferably be provided. The substrate is preferably substantially planar and more preferably a plastic impregnated fabric web. Preferably, the surface of the substantially planar substrate is provided with a defined roughness or surface topography prior to application of the multilayer system. As a result unpleasant for the viewer specular reflection is advantageously avoided and also achieved that a reflection takes place in a defined emission angle. A defined roughness or topography, for example, by using an appropriate fabric or by an embossing process in the laminated plastic layer or by using a suitable filled with solid particles varnish, or Alternatively produced by a combination of the methods mentioned.

this can be also formed as a transparent substrate, instead of providing a blackened substrate. Here, too, the desired suppression of Störlichtreflexion is achieved from the substrate. Particularly advantageous can also be a projection on clear glass or plastic surfaces in particular on windows or the like. The screen can thereby be for example a head-up display in an aircraft or a simulator. For further explanation of the invention will be described in the following embodiments with reference to the drawing.

These show in:

Figure 1 is a schematic diagram of a screen according to the invention to illustrate the selective reflection of red, green and blue light, Figure 2 is a schematic diagram of the realization of a screen according to the invention with an interference pigments containing of transparent lacquer layer against a dark background,

3 shows a reflection spectrum of an embodiment of a screen according to the invention with six periods each having a high refractive and low refractive index layer,

Figure 4 is a reflection spectrum of a screen according to spectrum according to Figure 3 when using anatase titanium dioxide rather than,

Figure 5 is a reflection spectrum of a screen according to the invention consisting of nine layers of alternately a high refractive and low refractive index layer and

6 shows a reflection spectrum of a screen according to the invention, wherein a superposition of three individual pigments in a paint layer is provided.

Figure 1 shows a schematic diagram of a section of an inventive shaped screen 1, on which light rays impinge. both the RGB laser light falls on the screen in the form of light rays 11, 12, 13 and white background light, by way of example by the arrows 14, 15, 16, shown 17 that characterize wavelengths which are different from the RGB light on. A radiation having wavelengths that correspond exactly to the red, green or blue is not relektiert not corresponding to the desired spectral reflection. A reflection will be held only for the Laseriicht with the RGB wave catches. Although the proportion of the white background light corresponding to these wavelengths is reflected from the screen. Because of the small half-value width of the reflection peaks (see also Figures 3 to 6), however, the resulting brightness impression so small that the screen for the eye of the viewer when off laser light appears dark.

One possible embodiment of the screen provides one figure. 2 Here, the blackened substrate is provided with a transparent varnish layer 30, 40, into which interference pigments 50 embedded. By the individual arrows a selective reflection is again indicated with the uppermost red light is not reflected beam 12, but passes through the interference pigment 50 and is absorbed by the dark substrate 40th The same applies to the yellow light beam 14. Only the green light beam 11 and the blue light beam 13 reflected at the respective interference pigments 50. The angular distribution of the reflection results from the arrangement and the arrangement angles of the respective pigments 50th

Such a coated pigment 51 is shown in, an enlarged view in the lower right corner of the image. The substrate 52 may be, for example, SiO particular with a thickness of 200 nm to 1 micron. By applying a multi-layer coating system on the support material in the form of the substrate 52 (here represented by the three layers 53, 54, 55) is a selective reflector is provided, which is comparable with the functions of a laser mirror. The coating of the carrier material can be effected or wet-chemically by an aqueous solution, however, by deposition from the gas phase by means of a chemical process, in particular CVD (chemical vapor deposition) method or a physical method, particularly the PVD method (physical vapor Deposition procedure) take place. Such pigments are produced, for example, by the company Merck as from an aqueous solution, and from BASF as by chemical deposition (CVD) offered recovered.

The peculiarity of pearlescent pigments is that a coherent reflection is provided. The electric field strengths are added together for overall visible light. The interference at thin layers is ultimately a light division. One indication of this is that each of the complementing to the reflection color is visible in transmitted light. In addition to the mutually complementary colors of the reflection and transmission is a further feature of the interference at thin layers that change color depending on the angle of incidence of the light. In the preparation of the interference pigments according to the invention used mica, for example, provided with a metal oxide film. First metal oxide is used here, for example. A crystal lattice of the titanium oxide is the substance known as anatase. By adding small amounts of tin oxide of the rutile modification can be produced.

3 shows a reflection spectrum (shown in the spatially integrated reflection on the wavelength. It is thus the spectral curve of the reflection of an interference stack shown. Preferably, in the interference stack to a component of a pigment which directly onto an appropriate substrate as the basis of screen is applied. on the substrate 62, a low refractive index layer 63 and a high refractive index layer 64 is arranged alternately. the refractive indices of the high refractive and low refractive index layer 64, 63 in this case correspond to those of titanium dioxide in the rutile phase, and silica. in this embodiment, six periods are of each having a high refractive index and a low refractive index layer 64, 63 is provided. the high refractive index layer in each case has beispielsweie a layer thickness of 496 nm, whereas the low refractive index layer has a layer thickness of 217 nm. the selective reduction of Ref lexion due to the different, above the other laminated high and low refractive index layers, the lightness L * (L *, a * and b * are calculated according to DIN 5302 for D 65 illuminant) to a value of 67 (the standard value of a Lambert emitter with a constant reflectance of 100% at 100 is located), the Y tristimulus value of the standard value of 100 to 37.6 reduced. The contrast K, defined as the ratio of RGB reflectivity to the Y-tristimulus value for projection increases accordingly by a factor of 2.7, wherein a screen having a spectral reflectivity constant a contrast of 1, having 0th Instead of providing a pigment 60 but also the interference stack can be a layer system that is applied directly to a suitable substrate as a basis of the screen.

The lowest layer 62 may for example consist of mica or silica, or other substrate. This layer does not enter into the calculation, wherein the substrate is considered to be semi-infinite medium.

4 shows a further embodiment of an image according to the invention is examined wall 1, in which the high refractive index layer of titanium dioxide is in the anatase phase. All other conditions correspond to the described for FIG. 3 By using an alternative high refractive Mate riales the individual peaks are narrower and at the same time the amplitudes 3 according to FIG Since the shift shown here System 64 has a lower lightness L * and a lower standard color value Y has in comparison to the spectrum is smaller than the layer system 64 according to Figure 3, the RGB reflectivity but is only slightly lowered, the contrast enhancement is further increased. On average, the contrast in the embodiment is increased by a factor of 5.3 of FIG. 4

Figure 5 shows a further alternative embodiment of a reflection spectrum of a screen according to the invention 1. In this embodiment, nine different layers 71-79 are provided. The individual layer thicknesses are not provided periodically in contrast to FIGS. 3 and 4 The bottom high-index layer 71 has a film thickness of 260 nm provided over low-index layer 72, a layer thickness of 420 nm provided over high refractive index layer 73, a layer thickness of 380 nm provided over low-index layer 74, a layer thickness of 100 nm, the above provided high refractive index layer 75, a layer thickness of 600 nm, which in turn provided above low refractive index layer 76, a layer thickness of 100 nm provided over high refractive index layer 77, a layer thickness of 380 nm provided over low-index layer 78, a layer thickness of 420 nm and as top provided high refractive index layer 79, a layer thickness of 260 nm. the brightness L * is thus reduced to an amount of 52, the Y-tristimulus value to a value of 20. the contrast increases, taking into account the reduced response of the RGB light by a factor of 2.5.

6 shows the reflectance spectrum of a further embodiment of a screen 1 according to the invention. Here, three different types of pigments 80, 90, 100 incorporated in a layer of varnish. Each of these pigments has its own coating and reflects only a single narrow wavelength range. For example, 16 periods of a low refractive index layer 82, 92, 102 as well as a high refractive index layer 83, 93 applied to a carrier 81, 91, 101 103rd A system Siι -X, for example, as the material.y O x N y is used with a variable layer thickness, wherein the refractive index by varying the nitride concentration Y can be adjusted. The brightness is thus reduced to L * = 33, the Y-tristimulus value Y = 7.87. The contrast increases by a factor of 5. The material used, the layer thicknesses to Nitridkonzentrationen are different selectable.

Claims

A nspr ├╝ che
1. A device for displaying static or moving images under INTENT a screen, characterized in that the device comprises a plurality of monochromatic daß one or laser light sources, a front projection of the daß Laseriichts the laser light sources is provided onto the screen, and daß the screen is spectrally selectively reflective, thereby acting unbeeinflußt of Störlicht a direction deviating from the Wellenlängen of the monochromatic laser light Wellenlänge substantially dark and strongly reflecting the monochromatic Laseriicht.
2. screen for use in an apparatus gemäß claim 1, characterized in that the screen daß spectrally selective reflective and has a contrast of a predeterminable in the range of 0 Wellenlängen λ ι of monochromatic laser light, übersteigt or predetermined threshold value, wherein the contrast K (0 λ j) (0 λ j) is to the Y-tristimulus value of Verhältniswert medium räumlich integrated reflection R.
3. Picture wall according to claim 2, characterized in that the screen daß an absorbent or transmissive substrate includes up.
4. Picture wall according to claim 2 or 3, characterized in that daß the screen for generating the spectral Selektivität selectively re- flexionserhöhende pigments having or having a direct, selective reflection erhöhende coating having at least two layers ,
5. Picture wall according to one of Ansprüche 2 to 4, characterized in that daß selectively reflexionserhöhende pigments on an absorbent layer are provided.
6. screen according to one of Ansprüche 2 to 4, characterized in that a direct daß selectively reflexionserhöhende coating on an absorbent layer is provided.
7. screen according to one of Ansprüche 2 to 4, characterized in that daß selectively reflexionserhöhende pigments to a transparent layer are provided.
8. screen according to one of Ansprüche 1 to 4, characterized in that a direct daß selectively reflexionserhöhende coating on a transparent layer is provided.
9. screen according to claim 5, characterized in that the selectively daß reflexionserhöhenden pigments in a paint layer are arranged.
10.Bildwand according to claim 5 or 9, characterized in that the selectively daß reflexionserhöhenden pigments predeterminable and wählbare irradiation angle and have daß an adjustable angular distribution of the pigments is provided.
11.Bildwand according to one of Ansprüche 5, 9 or 10, characterized in that the selectively daß reflexionserhöhenden pigments are prepared naßchemisch.
12.Bildwand according to one of Ansprüche 5, 9 or 10, characterized in that the pigments daß in a gas phase are produced.
13.Bildwand according to one of Ansprüche 5 or 9 to 12, characterized in that the pigments daß plättchenförmig are.
14.Bildwand according to one of Ansprüche 5 or 9 to 12, characterized in that the pigments are daß kugelförmig.
15. roll screen according to claim 6, characterized in that daß a dielectric layer as a coating system is provided comprising one or more metallic layers and / or oxides or nitrides of silicon, aluminum, titanium, zirconium or hafnium.
16. roll screen according to claim 6, characterized in daß the coating is produced by vapor deposition.
17.Bildwand according to claim 6, characterized in daß the coating is formed by sputtering.
18.Bildwand according to claim 6, characterized in daß the coating is naßchemisch prepared.
19 screen according to one of Ansprüche 2 to 18, characterized in that the absorbent layer daß a predetermined application-specific angepaßte Oberflächentopographie has.
20.Bildwand according to claim 19, characterized in that the Oberflächentopographie daß by providing a fabric with ausgewählt angepaßter structuring is produced.
21.Bildwand according to claim 19, characterized in that the angepaßte Oberflächentopographie daß by providing a plastic material having a predetermined structured by mechanical machining Oberfläche is generated.
22.Bildwand according to claim 19, characterized in that the Oberflächentopographie daß by providing an absorbent coating with angepaßt ausgewählter generated or structuring is produced.
23 screen according to claim 7, characterized in that the selectively reflexionserhöhenden daß pigments in a paint layer superiors are seen.
24.Bildwand according to claim 7 or 23, characterized in that the selectively daß reflexionserhöhenden pigments predeterminable and wählbare irradiation angle and have an adjustable angular misaligne- daß distribution of the pigments is provided.
25.Bildwand according to one of Ansprüche 7, 23 or 24, characterized daß selectively reflexionserhöhenden naßchemisch pigments are produced.
26.Bildwand according to one of Ansprüche 7, 23 or 24, characterized in that the pigments daß in a gas phase are produced.
27.Bildwand according to one of Ansprüche 7 or 23 to 26, characterized in that the pigments daß plättchenfόrmig are.
28.Bildwand according to one of Ansprüche 7 or 23 to 26, characterized in that the pigments daß kugelförmig are.
29 is screen according to claim 8, characterized in that daß a dielectric layer as a coating system is provided which comprises one or more metallic layers and / or oxides or nitrides of silicon, aluminum, titanium, zirconium or hafnium.
30 screen according to claim 8, characterized in daß the coating is produced by vapor deposition.
31 screen according to claim 8, characterized in daß the coating is prepared by sputtering.
32.Bildwand according to claim 8, characterized in daß the coating is naßchemisch prepared.
33.Bildwand according to one of Ansprüche 7, 8 or 23 to 32, characterized in that daß the transparent layer has a predetermined application-specific angepaßte Oberflächentopographie.
34.Bildwand according to claim 33, characterized in that the Oberflächentopographie daß by Prägen the substrate layer occurs.
35.Bildwand according to claim 33, characterized in that the angepaßte Oberflächentopographie daß by providing a plastic material having a predetermined structured by mechanical machining Oberfläche is generated.
36.Bildwand according to claim 33, characterized in that the Oberflächentopographie daß by providing a transparent coating with angepaßt ausgewählter generated or structuring is produced.
Nerfahren for displaying static or moving images by using an image of the wall gemäß a Ansprüche 2 to 36 and / or a device gemäß claim 1, characterized in that the images daß by Abrastem the Bildwandfl äche with one or more time-modulated laser beams, or by modulating one or more flared räumliche laser beams, in particular through an LCD matrix, or in the manner of a projection of a provided on a translucent Trägermaterial image using the light of one or more widened laser beams are generated.
Nerfahren for manufacturing a screen according to one of Ansprüche 2 to 36, characterized in that a substantially daß flächiges and / or provided with a topography of the substrate (40) is transparent either für all Wellenlängen of visible light or provided with a light absorbing coating, and daß a multi-layer system on the substrate is directly or indirectly applied.
Nerfahren according to claim 38, characterized in that the substrate daß with a resist layer is provided, which enthält in a transparent organic matrix embedded plättchenförmige pigments, which are provided with interference layers.
Nerfahren according to claim 39, characterized in that the pigments in the paint layer daß während be provided on the screen around the painting process with a defined angular distribution of their Flächennormalen to the vertical.
41. roll screen according to claim 38, characterized in that the substrate is daß geschwärzt and daß geschwärzten on the substrate a layer system with the gewünschten optical properties is carried up.
42Nerfahren according to claim 38, characterized in that daß the transparent substrate with the layer system having the optical properties gewünschten is coated.
PCT/EP1998/000664 1997-02-12 1998-02-06 Device for representing static and moving images using a screen, screen and representation and production method WO1998036320A1 (en)

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DE19705213 1997-02-12
DE19705213.4 1997-02-12
DE19747597.3 1997-10-28
DE1997147597 DE19747597B4 (en) 1997-02-12 1997-10-28 Apparatus for representation of static and moving images, using a projection screen, projection screen and method for displaying and for the preparation

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