WO2005059640A1 - Bildwand - Google Patents
Bildwand Download PDFInfo
- Publication number
- WO2005059640A1 WO2005059640A1 PCT/DE2004/002641 DE2004002641W WO2005059640A1 WO 2005059640 A1 WO2005059640 A1 WO 2005059640A1 DE 2004002641 W DE2004002641 W DE 2004002641W WO 2005059640 A1 WO2005059640 A1 WO 2005059640A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screen
- micromirrors
- screen according
- predetermined
- film
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00596—Mirrors
Definitions
- incident light screens which are known so far, either white surfaces are used which reflect uniformly over the solid angle or the preferred direction of reflection is given to the screen surface, e.g. by adding glass beads to the surface coating material.
- incident light screens which are known so far, either white surfaces are used which reflect uniformly over the solid angle or the preferred direction of reflection is given to the screen surface, e.g. by adding glass beads to the surface coating material.
- Preferred reflection direction which have metallic reflective screen surfaces, which have a parabolically curved surface.
- the common feature is a relatively low suitability for projection in bright rooms or under the influence of daylight or stray light, because the projected image is insufficiently bright compared to the ambient brightness, or because it is reflected by the screen Disturbing light (e.g. ceiling light) overexposes the projected image.
- Disturbing light e.g. ceiling light
- stray light is normally diffusely reflected from the surface of the known picture walls in the direction of the viewer, like the projected picture, which considerably reduces the contrast of the projected picture in bright room lighting or in strong outside brightness.
- the projected image then appears contrastless and colorless.
- the suitability for bright room projections is better with the parabolic or elliptically curved screens or with the directionally reflecting glass periwalls, but these screen types have the disadvantage of low side vision because the projected image is only reflected in a small horizontal solid angle or angle of reflection.
- the invention was therefore based on the object of developing a novel incident light projection screen which can be used above all in bright rooms (for example conference rooms) with overhead light and under the influence of daylight, without having to accept strong contrast or brightness losses in the projection display.
- the aim was to develop an incident light screen in which the projected image is reflected in a large horizontal but in a small vertical solid angle in order to achieve high light amplification.
- Another goal was to be able to precisely define the horizontal and vertical solid angle in which the projected image is reflected.
- Another goal was to develop a reflected light projection screen in which the entire three-dimensional space in which the image is reflected , can be defined extremely precisely.
- An incident-light projection screen according to the invention is shown in FIG. 1 using an example.
- the screen 1 in the shown embodiment 1 according to the invention consists of a spherically, ellipsoidally or paraboloidally curved surface, the reflecting surface of which consists of the micromirror surface structure 2 according to the invention.
- Fig. 2 The micromirror surface structure 2 according to the invention consists of concave or domed mirrors of small dimensions (micromirrors), which are arranged next to one another in a predetermined grid on the screen surface. the screen surface are arranged side by side.
- the grid preferred according to the invention is a grid with a honeycomb-shaped structure 3.
- the micromirror surface structure 2 can either be composed of individual micromirrors or consist of a continuous medium into which the micromirrors are molded adjacent to one another in a defined manner.
- the mirror surface of the micromirrors preferred according to the invention is a shiny metallic mirror surface.
- the size of the micromirrors should be chosen so small that the pixel-dependent image sharpness of the most common projectors can be fully used, or so that the viewer does not feel disturbed by a "halftone dot effect".
- the micromirrors used in the micromirror structure according to the invention have a defined elliptical outline shape 4, a defined oval outline shape 65, a defined elongated hexagonal outline shape 5, or an outline shape that corresponds to a defined polygonal shape that approximates an ellipse or an oval 66 (e.g. a Defined elongated hexagon, square, octagon, decagon, pentagon, etc.) The higher the number of corners of the polygon, the better the approximation.
- the preferred outline shapes according to the invention are the defined elliptical outline shape 4, the defined oval outline shape 65 or the defined hexagonal outline shape 5. depending on the use of concave or vaulted mirrors) of a dome from a defined hollow (or thin-walled) ellipsoid, ovaloid, rotational ellipsoid or rotational ovaloid 71.
- the micromirrors are based on a vertically mounted screen (screen in user position) with its long semiaxis exactly in the direction of the screen height or in the vertical (Y) direction and with its short semiaxis exactly in the direction of the screen width or in horizontal (X) direction oriented on the screen surface when it is in the user position.
- the micromirrors used according to the invention with their long semiaxis oriented in the vertical direction (or in the direction of the screen height) have the property that they receive the incoming projector radiation 6 in the form of an elliptical or oval light cone 7 or in the form of an approximately elliptical or approximately reflect the oval light cone 8 (in the case of the polygonal outline shape, which approximates an ellipse or an oval) towards the viewer.
- the micromirrors used in the surface structure described according to the invention with the long mirror half-axis 9 oriented in the vertical (Y) direction and the short mirror half-axis 10 oriented in the horizontal direction have a weak vertical curvature 11 (or a large vertical radius of curvature) and a strong one horizontal curvature 12 (or a small horizontal radius of curvature).
- the vertical reflection angle 13 ( ⁇ y ) of the micromirror becomes substantially smaller than the horizontal reflection angle 14 ( ⁇ x ), which has a considerably light-intensifying effect, but permits a large horizontal reflection angle of the screen.
- the mentioned curvature of the micromirrors can be either a (concave) curvature inwards (concave mirror) or a (convex) curvature outwards (arched mirror).
- the ratio of the vertical reflection angle 13 to the horizontal reflection angle 14 of the micromirrors depends directly on the ratio of the short mirror half-axis 10 to the long mirror half-axis 9 of the micromirrors.
- FIG. 2 The shape of the reflected elliptical or oval light cone 7 or the shape of the approximately elliptical or approximately oval light cone 8 (in the case of the polygonal outline shape of the micromirrors) is thus exactly due to the ratio of the long mirror half-axis 9 of the micromirrors to their short mirror half-axis 10, as well as definable by the strength of the micromirror curvature and the precise outline shape of the micromirror.
- FIG. 8/9 This makes it possible to realize picture walls in which the vertical reflection angle of the picture wall 16 is substantially smaller than the horizontal reflection angle of the picture wall 15, which results in a high light amplification effect without the restriction of a too small horizontal beam angle.
- the aim is to orient all micromirrors as possible so that their mirror normals (optical axes) all intersect at a previously defined intersection 18 or on a section line of a defined length, at a certain distance from the screen on the screen normal 26 , or that they intersect the screen normal at a certain position in a predetermined narrow area around the screen normal.
- the reflection behavior of the projection screen and the achievement of the most optimal shape of the projection zone 17 with the highest possible light amplification essentially depend on the defined position of this intersection or the intersection line or the intersection area. In addition, this ensures that the loss region 19, in which not all of the light cones reflected by the micromirrors overlap, is minimized, as a result of which the projector performance can be used optimally.
- the optimal area of the projection zone is located in a narrow vertical area 20 parallel to the screen, which passes through the projection zone near the defined intersection 18, because here the cover light cones reflected by all micromirrors almost 100%.
- this area is very narrow and it is related to the vertical and horizontal reflection behavior of the screen (see horizontal and vertical section through the projection zone - e.g. FIG. 8) approximately in the same plane, which is possible, for example, by a precise definition of the curvature of the Screen (in version 1) or can be further optimized by a precise definition of the line of intersection of the optical axes of all micromirrors (e.g.
- 3 versions were developed to achieve a defined spatial orientation of the micromirrors in in such a way that their optical axes intersect on the screen normal at a common intersection point or on a line of intersection of a predetermined length, or that their optical axes intersect in a predetermined narrow spatial area around the screen normal.
- Design 1 according to the invention FIG. 8: Spatial orientation of the micromirrors through a defined spherical, ellipsoidal or paraboloidally curved screen 21. The following applies: The optical axis of each micromirror is perpendicular to the curved surface of the screen.
- the optical axes of all the micromirrors intersect at the center of the sphere 22 of the spherically curved screen surface.
- FIG. 8 In the exemplary embodiment shown of a spherically curved screen 21, the projector position was assumed to be congruent with the spherical center 22 of the spherically curved screen to simplify the illustration.
- the vertical and horizontal reflection angles of the screen change, which must be taken into account in the design of the screen by a corresponding choice of the reflection angles of the micromirrors.
- Positioning the projector outside the screen normal 26 e.g. when the projector is mounted on the ceiling) can be corrected to a certain extent by slightly pivoting the screen about its horizontal central axis.
- Each sector has a defined micromirror surface structure 2 which is specifically dependent on its position on the screen.
- the micromirrors have a uniform spatial orientation 27 of their optical axes in each sector.
- FIG. 9 The spatial orientation of the micromirrors in the individual sectors is chosen such that the optical axes, the micromirrors located in the center of the sector, intersect at a previously defined intersection point 18 or on a straight line with a defined length, the intersection point or the line of intersection lies at a certain distance in front of the plane screen 23 on the surface normal 26.
- FIG. 9 The spatial orientation of the micromirrors in the individual sectors is chosen such that the optical axes, the micromirrors located in the center of the sector, intersect at a previously defined intersection point 18 or on a straight line with a defined length, the intersection point or the line
- FIG. 7 shows a three-dimensional representation of a small partial section from such a corner sector.
- the micromirrors (concave mirrors) have a hexagonal shape stretched in the direction of the screen height.
- FIG. 6 In the sectors which lie on the horizontal (X) central axis or on the vertical (Y) - central axis of the screen, the micromirrors are only inclined in the horizontal or vertical direction according to their position towards the screen normal , Only in the sector in the center of the screen 29 are the optical axes of the micromirrors perpendicular to the screen surface, so there they have no angular orientation to the screen normal.
- FIG. 5 The planar screen 23 can be divided into sectors in different ways.
- a division into square or rectangular sectors 30 or a concentric division into circular, elliptical or oval-shaped ring segments 31 starting from the center of the screen or a concentric division into polygonal ring segments 32 of different sizes is preferred, the sector in the center of the screen correspondingly the ring shape has a circular shape, an ellipse shape, an oval shape or a polygon shape. See examples in FIG. 5
- the finer the division of the screen surface into defined sectors with different spatial orientation or angular orientation of the optical axes of the micromirror structure the more optimally the reflection behavior of the screen can be designed, or the smaller the loss area 19 of the unusable areas reflected projector light radiation (see FIG. 9).
- FIG. 9 In the exemplary embodiment shown, a flat screen 23 can be seen, which has been divided into 25 rectangular sectors 30 of the same size in a grid pattern.
- the projector position was assumed to be congruent with the intersection point 18 defined for the example.
- the intersection 18 is the intersection of the optical axes of the micromirrors, which are located in the sector centers.
- the projection zone 17 in which the light cones reflected by all the micromirrors overlap and in which the complete projected image can be seen is shown hatched in the sections shown.
- Concave mirrors are preferred for the micromirror structure in this embodiment of the projection screen according to the invention, since in the case of concave mirrors the reflected radiation first converges to a focal point before it is dispersed.
- FIG. 7 concave mirrors are therefore advantageous in this embodiment, since in the case of the step-shaped offset 33, the micromirror that results when the micromirrors are inserted obliquely into the screen surface can thereby prevent the reflected light radiation from being partially shadowed by the step-like offset , Design 3 according to the invention:
- FIG.4 The third possibility is the exact spatial orientation of each individual micromirror on a flat screen 23 according to its position on the screen surface.
- This defined intersection 18 or the intersection line lies at a certain distance in front of the screen on its surface normal 26.
- the resulting projection zone 17 corresponds almost identically to the projection zone 17 of a screen according to the embodiment 1 according to the invention (see embodiment example FIG. 8 ), in which each individual micromirror has a different spatial orientation, corresponding to its position on the, in this case, curved surface.
- FIG. 10 Here the poor reflection behavior of a screen is shown as a comparison, in which the optical axes of the micromirrors are not oriented towards a common intersection or a common intersection line.
- the optical axes of the micromirrors are parallel to one another.
- Version 1 is the preferred method according to the invention for plate-shaped curved picture walls
- version 2 is the preferred method according to the invention for film-like or canvas-shaped (rollable) picture walls.
- the optical axes of the micromirrors can only be brought approximately to cover in a defined spatial area, the center of which lies on the screen normal, which means that the reflection behavior or the projection zone 17 of the screen cannot be designed as optimally as in Application of version 1, but version 2 can be used for the very economical production of flat film or canvas (rollable) projection screens.
- version 2 can be used for the very economical production of flat film or canvas (rollable) projection screens.
- the complex micromirror surface structure divided into sectors can be inexpensively embossed into a corresponding film or canvas in accordance with embodiment 2.
- a mirror coating eg by metallizing
- Arched screens according to version 1 can be used, for example, with a two-part press or Stamping tool can be produced. It would be possible to give the screen the desired curvature and the desired micromirror surface structure in the same work step.
- the screen according to the invention (versions 1-3) is largely insensitive to stray light if, above all, the vertical reflection angle of the screen has been defined accordingly small. If you choose the smallest possible vertical reflection angle for the micromirrors of the screen, then many stray light reflections can be almost completely prevented from the outset. This is to be illustrated in FIG. 11, on which a corresponding screen according to the invention with a small vertical reflection angle is shown in a sectional view. The screen shown here has the same reflection properties as the screen shown in the exemplary embodiment shown in FIG.
- an interference light source 34 and its interference reflections on two micromirrors 35 and 36 located on the edges of the projection screen are also shown.
- stray light reflections (light cone) 37 and 38 which emanate from the micromirrors 35 (top) and 36 (bottom) located on the edges of the screen, it can be seen that stray light sources which lie within the critical angular range 40 cause interference reflections, some of which are reflected into the projection zone 17, whereas stray light sources which lie within the uncritical angular range 39 only cause stray light reflections which are reflected past the projection zone 17 and thus do not reach the viewers in the projection zone.
- the smallest possible vertical reflection angle 13 of the micromirrors must be achieved (with a given projector position and projection screen position).
- FIG.12 (sectional view): It is also interesting to realize a continuous change in the curvature of the mirrors used. As a result, the horizontal and the vertical reflection angle of the micromirrors used and thus also the horizontal and the vertical reflection angle of the screen can be changed continuously (at the same time).
- the required change in the micromirror curvature can be done by a device for Generate an electrostatic or electromagnetic field 67, which is in operative connection with the micromirrors.
- micromirrors are designed such that the curvature of the micromirrors is changed by changing the electrostatic or electromagnetic field.
- FIG.12 The change in the micromirror curvature can also be determined by a predefined one
- Pressure change of a fluid 45 happen, which is enclosed in a chamber and is in contact with the micromirrors.
- the pressure change is achieved by means of a device for generating a predetermined pressure 46, which is operatively connected to said chamber via a line system and the fluid 45.
- the micromirrors are designed such that a change in pressure in the fluid causes a change in the micromirror curvature.
- Such a screen (device) will now be described here, in which the change in the micromirror curvature occurs by means of a change in pressure of air in a gas-tight frame structure 42.
- an elastic, metallic reflective (metallized) film 43 forms the screen surface.
- the film lies gas-tight on a grid with defined grid openings, which forms the front of the frame construction.
- the film is connected to the frame construction in a gas-tight manner.
- the outline shape of the grating openings of the grating described corresponds to the desired outline shape of the micromirrors.
- a honeycomb-shaped grid 44 is preferred here, the preferred outline shape of a honeycomb being a predetermined hexagon 70 stretched in the direction of the screen height.
- This honeycomb grid 44 which forms the front of the frame structure 42, is supported by means of a substructure 69 (not shown).
- the substructure 69 can be flat or have a predetermined curvature. If a curved substructure is used, a curved screen according to embodiment 1 (FIG. 8) can be produced in this way.
- the metallic reflective film 43 Due to a negative pressure 45 generated in the interior of the gas-tight frame construction 42, the metallic reflective film 43 is drawn into the honeycomb grid 44 and thereby forms a micromirror surface structure 2, in which all micromirrors have approximately the same curvature, the same outline shape and the same dimensions have.
- the entire screen surface takes on the specified shape of the substructure. (eg a defined curvature).
- the possible setting range of the vertical and horizontal reflection angle of this screen is essentially dependent on the elastic material properties of the film used.
- the described screen can also have an adjustable screen curvature, which e.g. can be done by a deformable elastic plate, which is used as a substructure 69 for the grating described, which serves to produce the micromirror surface structure.
- the elastic plate can be deformed by various forces (e.g. an electrostatic, electromagnetic or mechanical force).
- the distance between the focal point or focal area to which the optical axes of the micromirrors are aligned can be shifted along the normal to the screen by means of an adjustable screen curvature, which enables a spatially adjustable projection zone 17.
- an adjustable screen curvature which enables a spatially adjustable projection zone 17.
- FIG. 13 In this illustration, a method is to be described with which an image wall according to embodiment 1 according to the invention (see FIG. 8) can be produced in a simple manner.
- Steps A-G The same device as described in FIG. 12 is used in this method.
- the device described in FIG. 12 serves as a kind of vacuum drawing tool with which the micromirror surface for a screen according to FIG. 8 can be produced.
- the complete manufacturing process of a screen according to version 1 (FIG. 8) will be briefly described here using a few work steps. (Steps A-G):
- Step A An elastic, metallic reflective (metallized) film 43 is placed on the honeycomb grid 44 and slightly stretched towards the edges of the gas-tight frame construction 42. The film is then attached to the edges of the gas-tight frame construction in a gas-tight manner, for example by means of a sealing adhesive 47, and is held in position under slight tension.
- Step B After the metallic reflective film 43 has been correctly positioned on the frame structure 42 and fixed with slight tension, a vacuum 45 is generated inside the frame structure by means of a device for generating a predetermined pressure 46. As a result, the metallic reflective film 43 is inserted into the grid openings of the honeycomb shaped grating 44 and forms a micromirror surface structure, as described in FIG.12.
- the fixing of the film with the curvatures or micromirrors formed in the individual lattice openings begins when this negative pressure is maintained.
- the outward side (towards the ambient pressure) of the side, which is deformed by the vacuum, is covered with a hardening material, e.g. B. sprayed with a fast curing resin 49. This can e.g. by means of an automatic spray system 51. This can be followed by a drying process using hot air for faster curing of the resin. ( not shown )
- This illustration shows the film deformed by negative pressure, with the fixed micromirror surface structure 50.
- the film with the fixed micromirror surface structure 50 is applied to a carrier plate 55. This is done in a mold with press surfaces, which consists of an upper mold part 52 and a lower mold part 53.
- a molding tool with defined curved pressing surfaces and a carrier plate 55 with a predetermined curvature are preferably used.
- an adhesive substance 54 is applied in a uniformly thick layer to the concavely curved side of the carrier plate 55.
- the film is then connected to the fixed micromirror surface structure 50 by moving the upper mold part 52 and lower mold part 53 together.
- a cross section through the closed molding tool 57 can be seen in illustration F.
- the connection by gluing is done with a slight pressure.
- the curing process of the adhesive layer can be accelerated by a heated mold.
- the pressing surface of the pressing tool upper part 52 should also be somewhat elastic (e.g. rubberized) in order to prevent damage to the micromirror structure during pressing.
- Step G After the adhesive substance (adhesive layer) 54 has hardened, the finished screen can be removed from the molding tool. The picture shows the finished screen 56.
- a non-metallized film eg transparent plastic film
- the mirroring or metallization of the micromirror surface structure would take place after work step C or G. Similar to the manufacturing process described, a manufacturing process is also conceivable that works with overpressure instead of underpressure.
- the method described in FIG. 13 can also be used for the production of so-called "master forms” and thereby serve as the basis for a further production method. (3 steps A -C) This process is not shown in the drawing.
- the "original" picture wall thus produced then serves as a molding tool from which embossing plates 58 (not shown) are molded.
- the embossing plates 58 produced are then used in embossing tools for the mass production of picture walls.
- tools with stamping rollers 59 can also be used.
- the embossing plates 58 produced are converted into embossing rollers, e.g. by attaching to the peripheral surface of suitable rollers.
- the micromirror surface structure of the embossing plates or rollers 60 can then be processed in a rapid manufacturing process, e.g. be embossed in thermoplastic sheets or thermoplastic films.
- embossed plates or foils which then have the same micromirror surface structure as the "original" screen, then only have to be coated with a reflecting surface, for example by means of a metallization process 61, as a result of which the micromirror surface structure then receives its metallic reflecting surface 62.
- the metallized screen plates or foils 63 produced in this way can then, depending on the application, also receive additional coatings (for example protective coatings or coatings with optical properties) 64.
- the incident light projection screen consist, in particular, in that the mirror-like surface, the micromirror structure reflects the incident projector radiation almost without losses, and in principle the vertical and the horizontal reflection angle of the projection screen due to the exact definition of the reflection behavior of the micromirror structure according to the invention can be precisely defined, which makes almost any conceivable light amplification of the projected image possible at the expense of the reflection angle. that in the interaction of the given reflection behavior of the micromirrors and the defined spatial orientation of the optical axes of the micromirrors, an exact definition of the three-dimensional projection space into which the projected image is reflected is possible. According to the projection screen variant described in FIG. 12, the entire reflection behavior is this Screen can even be flexibly adjusted at any time in a wide range.
- the spatial reflection behavior of the screen can be optimally designed for each special application in order to achieve the maximum possible light amplification, that a flat or screen-shaped screen with high light intensity can be realized with a flat screen according to the embodiment 2 or 3 according to the invention, as is the case was previously not possible with flat or rollable screens.
- the vertical reflection angle of the screen can be chosen to be very small, which is advantageous because it enables a considerable increase in light to be achieved without the horizontal reflection angle of the screen having to be restricted, which is of greater importance for the viewer since the eye levels of all viewers are on approximately the same horizontal level.
- the screen according to the invention is best suited for image projection in bright rooms or under the influence of daylight or stray light.
- very high light amplifications very good contrast and a very low susceptibility to interference are achievable, which makes the screen according to the invention (in all versions) particularly suitable for this application.
- Another interesting area of application of the screen according to the invention is the home cinema area.
- the embodiment 2 according to the invention (tarpaulin screen with sectorally divided micromirror surface structure) seems to be particularly suitable for this area. With this embodiment, flat rollable film or canvas-like picture walls with very high light amplification are possible, which can be manufactured inexpensively in large quantities by stamping technology and subsequent metallization.
- the screen according to the invention can be irradiated with a wide variety of light sources instead of with a projection device, so that the screen converts the incoming light radiation almost without loss into a defined beam with a defined vertical and horizontal reflection angle. This defined beam with a defined angle of reflection can then e.g. can be used for lighting purposes.
- the screen according to the invention can also have very large dimensions (length x width), with a significantly enlarged micromirror structure (micromirror structure then becomes a reflection mirror structure!). If a screen design is used as described in FIG.
- the screen in which the reflection angle of the micromirrors and additionally the screen curvature can be adjusted continuously at any time, then the screen can even be used for very precise and targeted lighting or deflection of light radiation.
- the incident light projection screen according to the invention can be used in this way for inexpensive large-area lighting of dark building areas or for lighting building areas located far inside by means of sunlight.
- the screen can be aligned very precisely to a specific light source (e.g. sun).
- the screen can be automatically aligned with the light source, for example by means of control electronics and light-sensitive sensors. This allows the screen to automatically track a light source that is moving (e.g. the sun).
- the screen can also be used, for example, for the defined redirection of solar radiation in solar systems, for example in a solar tower system or in general in a concentration mirror solar system (eg a concentration mirror solar system in earth's orbit).
- the screen described can then take on enormous dimensions, with micromirrors (or better, reflection mirrors!) That have dimensions of several meters!
- the screen according to the invention with a defined micromirror surface structure can also serve as an advertising screen or notice board, for example in road or rail traffic. If you apply a metallic reflective colored image in a thin layer (e.g. metallized) to the micromirror surface structure, the screen, this colored image is very bright to see if you are at a certain distance with a bright white
- the lamp on the screen lights up, even in the reflection zone of the
- Vehicle occupants have an almost self-illuminating image or information sign or text, since the screen reflects the image illuminated by the headlight back to the vehicle in a concentrated manner.
- micromirrors with an oval outline shape micromirrors with an outline shape that corresponds to a polygonal shape that approximates an ellipse or an oval Device for generating an electrostatic or electromagnetic field Device for generating an specified pressure substructure in the direction of the screen stretched hexagon inner or outer surface (depending on the use of concave or arched mirrors) of a dome from a defined hollow (or thin-walled) ellipsoids, ovaloids, rotating ellipsoids or rotating ovaloids 72 concave curvature (concave mirror)
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004299885A AU2004299885A1 (en) | 2003-12-17 | 2004-11-30 | Viewing screen |
CA002550510A CA2550510A1 (en) | 2003-12-17 | 2004-11-30 | Viewing screen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003159084 DE10359084A1 (de) | 2003-12-17 | 2003-12-17 | Bildwand |
DE10359084.6 | 2003-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005059640A1 true WO2005059640A1 (de) | 2005-06-30 |
Family
ID=34683425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002641 WO2005059640A1 (de) | 2003-12-17 | 2004-11-30 | Bildwand |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2004299885A1 (de) |
CA (1) | CA2550510A1 (de) |
DE (1) | DE10359084A1 (de) |
WO (1) | WO2005059640A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006044039A1 (en) * | 2004-10-15 | 2006-04-27 | Hewlett-Packard Development Company, L.P. | Screen |
JP2017513035A (ja) * | 2014-03-10 | 2017-05-25 | ドルビー ラボラトリーズ ライセンシング コーポレイション | レーザ投影用高性能スクリーン |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2010008120A (es) | 2008-01-28 | 2010-11-30 | Reald Inc | Pantalla de proyeccion que reserva la polarizacion. |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB638141A (en) * | 1945-10-05 | 1950-05-31 | Philco Corp | Projection screen |
US2763184A (en) * | 1952-06-23 | 1956-09-18 | Jackson James Gordon | Projection screens |
US2974709A (en) * | 1954-04-09 | 1961-03-14 | Edgar Gretener A G Dr | Process for the manufacture of embossed screens |
US3263561A (en) * | 1963-05-13 | 1966-08-02 | Solar Projection Screens Ltd | High light reflecting screens |
DE1572655A1 (de) * | 1966-11-21 | 1970-06-25 | Eastman Kodak Co | Bildschirm und Verfahren zur Herstellung desselben |
DE2255937A1 (de) * | 1972-11-15 | 1974-05-22 | Braun Ag | Spiegel mit einstellbarer brennweite |
DE2525863A1 (de) * | 1975-06-10 | 1977-05-12 | Siemens Ag | Optisches schichtsystem |
DE2655527B1 (de) * | 1976-11-16 | 1978-04-27 | Landis & Gyr Ag | Projektionsschirm und Verfahren zu dessen Herstellung |
DE2805960A1 (de) * | 1977-03-21 | 1978-10-05 | Conrad R Schudel | Verfahren zur herstellung von reflektoren, insbesondere von betrachtungsschirmen |
JPS5720725A (en) * | 1980-07-11 | 1982-02-03 | Mitsubishi Electric Corp | Production of reflection type screen |
US20030011859A1 (en) * | 2000-01-17 | 2003-01-16 | Jacques Paris | Scanning device for a laser beam focus |
-
2003
- 2003-12-17 DE DE2003159084 patent/DE10359084A1/de not_active Withdrawn
-
2004
- 2004-11-30 WO PCT/DE2004/002641 patent/WO2005059640A1/de active Application Filing
- 2004-11-30 CA CA002550510A patent/CA2550510A1/en not_active Abandoned
- 2004-11-30 AU AU2004299885A patent/AU2004299885A1/en not_active Abandoned
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB638141A (en) * | 1945-10-05 | 1950-05-31 | Philco Corp | Projection screen |
US2763184A (en) * | 1952-06-23 | 1956-09-18 | Jackson James Gordon | Projection screens |
US2974709A (en) * | 1954-04-09 | 1961-03-14 | Edgar Gretener A G Dr | Process for the manufacture of embossed screens |
US3263561A (en) * | 1963-05-13 | 1966-08-02 | Solar Projection Screens Ltd | High light reflecting screens |
DE1572655A1 (de) * | 1966-11-21 | 1970-06-25 | Eastman Kodak Co | Bildschirm und Verfahren zur Herstellung desselben |
DE2255937A1 (de) * | 1972-11-15 | 1974-05-22 | Braun Ag | Spiegel mit einstellbarer brennweite |
DE2525863A1 (de) * | 1975-06-10 | 1977-05-12 | Siemens Ag | Optisches schichtsystem |
DE2655527B1 (de) * | 1976-11-16 | 1978-04-27 | Landis & Gyr Ag | Projektionsschirm und Verfahren zu dessen Herstellung |
DE2805960A1 (de) * | 1977-03-21 | 1978-10-05 | Conrad R Schudel | Verfahren zur herstellung von reflektoren, insbesondere von betrachtungsschirmen |
JPS5720725A (en) * | 1980-07-11 | 1982-02-03 | Mitsubishi Electric Corp | Production of reflection type screen |
US20030011859A1 (en) * | 2000-01-17 | 2003-01-16 | Jacques Paris | Scanning device for a laser beam focus |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 084 (P - 117) 22 May 1982 (1982-05-22) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006044039A1 (en) * | 2004-10-15 | 2006-04-27 | Hewlett-Packard Development Company, L.P. | Screen |
GB2434655A (en) * | 2004-10-15 | 2007-08-01 | Hewlett Packard Development Co | Screen |
US7274508B2 (en) | 2004-10-15 | 2007-09-25 | Hewlett-Packard Development Company, L.P. | Reflective projection screen with angled sidewalls |
GB2434655B (en) * | 2004-10-15 | 2009-04-15 | Hewlett Packard Development Co | Screen |
JP2017513035A (ja) * | 2014-03-10 | 2017-05-25 | ドルビー ラボラトリーズ ライセンシング コーポレイション | レーザ投影用高性能スクリーン |
Also Published As
Publication number | Publication date |
---|---|
DE10359084A1 (de) | 2005-07-21 |
AU2004299885A1 (en) | 2005-06-30 |
CA2550510A1 (en) | 2005-06-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69209736T2 (de) | LED-Lampe mit Linse | |
EP1697686B1 (de) | Stufenlinsenscheinwerfer | |
DE2124021A1 (de) | ||
EP1700152A1 (de) | Mikrospiegelarray | |
DE2357060A1 (de) | Streuscheibe fuer beleuchtungstechnische zwecke | |
EP0200876A1 (de) | Anordnung zur Ausleuchtung eines Raumes mit Tageslicht | |
EP3203140A1 (de) | Beleuchtungseinrichtung für ein fahrzeug und zugehöriges betriebsverfahren | |
DE1572655A1 (de) | Bildschirm und Verfahren zur Herstellung desselben | |
DE2655527C2 (de) | Projektionsschirm und Verfahren zu dessen Herstellung | |
WO2005059640A1 (de) | Bildwand | |
DE1622245A1 (de) | Optisches Abtastverfahren | |
DE102019207073B4 (de) | Bilderzeugungseinrichtung für ein scannendes Projektionsverfahren mit Bessel-ähnlichen Strahlen | |
DE69510463T2 (de) | Optische fenster | |
EP1232363B2 (de) | Entblendungstransparent für leuchtkörper | |
EP0813026A2 (de) | Beleuchtungseinrichtung | |
EP1685348B1 (de) | Leuchte mit transparentem lichtaustrittselement | |
EP3112747B1 (de) | Optisches element zur beeinflussung der lichtabgabe einer länglichen lichtquelle | |
WO2006040133A1 (de) | Beleuchtungsverfahren | |
WO1988009546A1 (en) | Display device with a display field and a lamellar grid, process for producing the lamellar grid | |
WO2018073207A1 (de) | Verfahren zur bemusterung einer oberfläche, zum beispiel einer glasoberfläche | |
EP2339225A1 (de) | Anordnung zur Lichtabgabe mit mehreren punktförmigen Lichtquellen | |
EP1900998B1 (de) | Reflektor mit einer lichtaufweitenden Struktur | |
DE2460115A1 (de) | Rasterabdeckung fuer leuchtende decken und leuchten | |
DE10135450A1 (de) | Projektionssystem | |
DE69032676T2 (de) | Verteiler von elektromagnetischer Strahlung, insbesondere Projektionsschirm |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004299885 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2550510 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 2004299885 Country of ref document: AU Date of ref document: 20041130 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2004299885 Country of ref document: AU |
|
122 | Ep: pct application non-entry in european phase |