Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
  • H04N13/30—Image reproducers
  • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
  • H04N13/359—Switching between monoscopic and stereoscopic modes

Definitions

• the invention relates to an arrangement for optionally three-dimensionally perceptible or two-dimensional representation of images. It concerns auto-stereoscopic screens, which optionally present a two-dimensional image with the usual display quality.
• electronically controllable color LCD panels are used, among other things, which are also suitable for two-dimensional image reproduction when activated in the conventional manner.
• an autostereoscopic representation which is also referred to as a three-dimensional representation in the following due to the strong spatial impression
• This is particularly relevant for the legibility of texts, since the image quality is better in the two-dimensional mode due to the higher image resolution.
• WO 01/56265 describes a method for spatial representation in which at least one wavelength filter array provides a spatially perceptible representation.
• an LCD panel acts as a wavelength filter array with a variable transmittance. This enables switching between 2D and 3D display.
• the disadvantage here is that the light through two LCD panels, i.e. through a variety of components, e.g. Polarization filters, liquid crystal layers and other components such as carrier substrates must penetrate so that the brightness is reduced both in the 2D and in the 3D representation.
• No. 6,157,424 describes a 2D / 3D display in which two LCD panels are connected in series and one of them serves as a switchable barrier.
• WO 02/35277 describes a 3D display with a substrate which contains strips of first optical properties and intermediate strips of second optical properties and a polarizer.
• 2D / 3D switching is achieved by rotating the polarization or by adding or deleting a polarizer.
• a 2D / 3D switchable display is also known from US Pat. No. 6,337,721.
• Several light sources, a lenticular and at least one functionally essential switchable lens are provided. These components ensure different lighting modes to achieve a 2D or 3D representation.
• US Pat. No. 5,897,184 discloses an autostereoscopic display with a reduced-thickness lighting component for portable computer systems, which enables zone-by-zone switching from 3D to 2D and vice versa.
• the disadvantage here is that it is a two-channel 3D display for only one viewer, who must also be in a fixed viewing position.
• the image brightness in 3D mode is lower than that of comparable two-channel SD displays. This refers to those 3D displays that show exactly one left and exactly one right image.
• strong and disruptive moiré effects can be perceived when the viewing positions are not correctly selected in depth in front of the 3D display.
• the light available for 3D mode is scattered with the aim of eliminating the 3D image separation by homogenizing the lighting.
• the image brightness is thus reduced in 2D mode in the case of arrangements with a switchable diffuser, since the scattering state of such diffusers has a transmittance less than 1 (for example approx. 50%).
• the device can only be produced with a high level of manufacturing complexity.
• Another disadvantage is that by inserting a switchable lens, the distance between the lighting component and the image display panel is increased, which prevents normal viewing distances, particularly in the case of 3D displays with small pixels and / or high resolution.
• US Pat. No. 5,134,345 describes a lighting system for high-resolution and SD displays, which initially generates lighting patterns that are determined sequentially (stroboscopically).
• a further embodiment provides a spreading disc which can be switched between transparent and scattering modes and which is switched to scattering for the 2D mode.
• No. 5,500,765 describes how the effect of a lenticular can be canceled out if a complementary lens arrangement is folded over it. This virtually turns off the 3D display. This approach only works with lenticular systems and requires the production of an exactly complementary lens arrangement. Other disadvantages are sensitivity to dust and increased reflection losses.
• DE 1 00 53 868 C2 describes an arrangement for optionally 2D or SD display with two light sources, the SD lighting always being switched off for the 2D display or the light emitted by it being blocked.
• the disadvantage here is that the 2D illuminating light cannot be made sufficiently homogeneous with respect to the luminance.
• a commercially available light guide is used as 2D lighting, its macroscopic structure is usually visible to the viewer (s) and generates an annoying pattern. art. Visually invisible microscopic structuring is, however, complex and expensive to manufacture.
• JP 1 0268805 is based on the task of achieving a bright 2D image and the same brightness in 2D and 3D representation. This is aimed at by using a lenticular grid as an illumination barrier, which is located behind an imaging device. Furthermore, a weakly scattering disc for temporary cancellation of the lens effect is movably arranged there.
• a 3D / 2D switchover with "diffusing means” is provided.
• the 3D / 2D display contains additional “converting means” compared to a pure 3D display, these "converting means” consist in “the second condition ", by which the 2D mode is meant here, from” diffusing means ", which are intended to produce a 2D representation in various ways.
• a disadvantage of this arrangement is that the resolution in 2D mode is very poor and a full resolution (“fill resolution”) is not achieved in 2D mode. For this reason, text displayed in 2D mode, for example, remains illegible 9 and 10 in US 2003/001 1 884 AI with switchable scattering layer 94 in the interior of the lens grid 15, the optical distance between the scattering layer and subpixels may be smaller, but is nevertheless relatively large also complex to manufacture and expensive and has more because of the additional switchable spreading properties Disadvantage. The ambient light suitability of conventional 2D displays is also not achieved.
• a lens grid is preferably used for image separation.
• the image-separating lenticular screen is intended to serve as a "light-scattering" component by bringing it closer to the imager.
• the lenticular screen itself is not designed to be light-scattering on its convex or flat surface or on the inside.
• the scattering effect should occur in the lenticular screen itself a finite distance from the image generator and virtually 0 mm from the image separator. As a result, the scattering layer must deteriorate the 2D image on the image generator and cannot cancel out the image-separating effect of the lenticular grid. Therefore, even with these arrangements, text displayed in 2D mode remains illegible, furthermore, the ambient light suitability of conventional 2D displays is not achieved.
• an object of the present invention to provide an arrangement of the type mentioned at the outset which can be implemented using simple means.
• 3D mode the arrangement is intended to present several viewers simultaneously with a spatially perceptible image.
• 2D mode a high-resolution image, preferably a full-resolution image, should be able to be displayed.
• the image brightness should be the same in 2D and 3D mode, preferably without the image brightness in 3D mode being reduced in comparison to a pure 3D display by the 2D / 3D switching measures.
• a further object of the present invention is to realize typical — preferably small — viewing distances, in particular also with high-resolution 3D displays.
• the arrangement to be created should preferably have an unchanged suitability for ambient light compared to pure 2D displays.
• an arrangement for optionally three-dimensionally perceptible or two-dimensional representation comprising: an illuminating device which emits light distributed over a large area, at least one filter array located in the viewing direction in front of the illuminating device for structuring the light originating from the illuminating device, at least one scattering layer located in front of the filter array in the viewing direction, one transmissive image display device located in front of or behind the scattering layer, preferably in the form of a TFT-LCD panel, the distance a between the filter array and the scattering layer being variable, so that in a first Position in which the scattering layer is arranged at a distance from the filter array, the structuring of the light originating from the illumination device caused by the filter array due to the light scattering effect of the scattering layer is essentially canceled, preferably below the contrast threshold of human vision, and a two-dimensional image the image display device is shown in its full resolution, and - in a second position, in which the scattering layer is arranged in
• Variant 1 a transmissive image display device located behind the scattering layer in the viewing direction; Image display device, diffusion layer and lighting device are arranged rigidly; the filter array is applied to a transparent substrate; the transparent substrate with the filter array is movable relative to the scattering layer in order to change the distance a.
• Variant 1 b transmissive image display device located in front of the scattering layer in the viewing direction; Image display device, scattering layer and lighting device are arranged rigidly; the scattering layer can optionally be applied to a transparent substrate; the filter array is applied to a transparent substrate; the transparent substrate with the filter array is movable relative to the scattering layer in order to change the distance a.
• Variant 2a transmissive image display device located behind the scattering layer in the viewing direction; the filter array is applied to a transparent substrate; the transparent substrate with the filter array is rigidly connected to the lighting device (the filter array can also be applied directly to the lighting device); The transparent substrate, filter array and lighting device can be moved together relative to the scattering layer and image display device in order to change the distance a.
• Variant 2b transmissive image display device located in front of the scattering layer in the viewing direction; the scattering layer can optionally be applied to a transparent substrate; the filter array is applied to a transparent substrate; the transparent substrate with the filter array is rigidly connected to the lighting device (the filter array can also be applied directly to the lighting device); In order to change the distance a, the transparent substrate, filter array and illumination device can be moved together relative to the scattering layer and image display device.
• Variant 3a transmissive image display device located behind the diffusion layer in the viewing direction; the scattering layer and the image display device are rigidly connected to one another; the filter array is applied to a transparent substrate; the transparent substrate with the filter array is rigidly connected to the lighting device; The image display device and the scattering layer can be moved relative to the filter array and the lighting device in order to change the distance a.
• Variant 3b transmissive image display device located in front of the scattering layer in the viewing direction; the scattering layer is applied to a transparent substrate; the filter array is arranged on the lighting device; The transparent substrate and scattering layer can be moved relative to the filter array and the lighting device in order to change the distance a.
• the image display device with the scattering layer and the transparent substrate is also moved.
• the distance a depends in particular on the nature of the scattering layer, the pixel size of the image display device and the size or conspicuity of the filter structure, it can be in the first position, for example, in the range from 10 mm to 30 mm or else larger or preferably be smaller. In the second position, the distance a can be, for example, 0.2 mm or more.
• the above-mentioned variants 1 a, 2a, 3a are particularly preferred, since they offer the advantageous possibility of setting the distance z between the filter array and the image display device to zero.
• the distance z is to be understood as the distance between the image display device and the filter array, measured from the side of the image display device facing the filter array.
• the transmissive image display device can be suitable for color or grayscale reproduction.
• the scattering layer which is advantageously located in front of and on the image display device, is preferably an antiglare matting layer on the polarization filter on the observer side, as is customary in the case of LCD panels. In this case, only this one scattering layer is present in the specified form. However, it can also be advantageous if, in addition to this first scattering layer, there is a second one, which is then located behind the image display device, for example in the viewing direction.
• the (then) only scatter layer can be arranged in front of or behind the image display device, depending on the design variant.
• the word “scattering layer” is used, regardless of the specific design variant.
• a conventional backlight consisting of CCFL tubes arranged in parallel
• a sidelight consisting of a light guide with CCFL tubes including control and various foils (e.g. Brightness Enhancement Film and Dual Brightness Enhancement Film from 3M) can be used.
• the filter array is an example of an exposed and developed photographic film, which preferably contains transparent and opaque surface sections. These surface sections are arranged in a defined two-dimensional structure.
• DE 201 21 31 8 U1 WO 01/56265, PCT / EP2004 / 004464, PCT / EP2004 / 001 833 and DE 1 01 45 1 33.
• Both the filter array and the scattering layer can also be used without a substrate; for this you can e.g. are each clamped onto a frame so that they have a flat surface.
• the field of view may vignette. This means that when looking obliquely at the edge of the screen / the screen edges past the filter array or the lighting device, the 2D image (and possibly the 3D image) is not sufficiently illuminated in full size.
• this reflects the light of the lighting device or the light of the lighting device penetrating through the filter array, as a result of which the vignetting becomes invisible.
• the mirror shaft is realized with front surface mirrors that run vertically (90 ° ) to the surface of the filter array with a high degree of reflection (for example p> 98%, 3M “Enhanced Specular Reflector” film, laminated onto a flat carrier substrate).
• the slits necessary for the respective movement implementation (see the variants mentioned above) for the passage of mechanical components for movement should be kept as minimal as possible.
• the mirror surface should be scratch-resistant.
• a further variant for circumventing the aforementioned vignetting is the use of a lighting device with a correspondingly enlarged filter array, which is enlarged in area compared to the image display device, preferably on all sides. The result of this is that even with an oblique view at the edge of the image surface of the image display device, the filter array or the illuminating surface of the lighting device is still looked through, and vignetting is thus avoided.
• the anti-vignetting by means of a mirror shaft has the advantage over the last-mentioned variant that the virtual enlargement of the lighting device and possibly the filter array is virtually infinite, which is why all oblique viewing angles are vignetting-free, ie also large oblique viewing angles.
• an additional weakly scattering scatter film can also be laminated on the inside of the image display device. This minimizes the scattering requirements for the scattering layer (e.g. the antiglare matting layer of the image display device) and / or for the size of the distance a in the first position of the arrangement according to the invention.
• the scattering layer e.g. the antiglare matting layer of the image display device
• an intensely scattering antiglare matting as a scattering layer on the image display device, for example a color LCD panel, in order to minimize the displacement ⁇ a of the corresponding components between the first and second positions.
• the area under the luminance / scatter The indicatrix of the antiglare matting is enlarged, in particular by improving the near-angle scatter and / or, for example, increasing the half-value angle of the indicatrix.
• the pixel pitch / the pixel size on the image display device can be reduced.
• the structures on the filter array also have a smaller size or period and are therefore more difficult to resolve for the human eye, which is desirable both for the first position (2D mode) and for the second position (3D mode).
• means for controlling the image display device can be provided, so that partial information from several views of a scene or an object can be displayed in a defined assignment on the same, whereby on a smallest physical picture element of the image display device either only partial information of a view or partial information from at least two Views mixed information, see also DE 101 45 1 33 C2.
• said means for controlling the image display device from partial information of several views also work according to other image combination rules, e.g. according to DE 1 01 1 8 461 or other documents, as they were mentioned above.
• the antiglare matting of the polarizing film is replaced by an antireflective coating of the polarizing film very bright TFT-LCD panels, the anti-glare matting
• the scattering layer in question is provided as an additional component.
• the scattering layer used - if it is not designed as an anti-glare matting, but as a separate layer - is advantageously designed to be permanently (light) scattering. It preferably has a high light transmittance, which should exceed at least 50%. It can practically be formed as an optically scattering layer on a transparent substrate, hereinafter referred to as the diffusing screen. Practical configurations see, for example, a scattering film laminated on a glass substrate for LCD panel backlights or sidelights (eg from the manufacturer 3M) or parchment paper or the roughened layer and / or etched surface of a glass substrate. Scatter layer and substrate should be as thin as possible.
• the scattering layer can be designed so that it can be controlled so that in a first mode it has a scattering effect in the first position of the arrangement and in a second mode in the second position of the arrangement as a transparent medium.
• Such electrically switchable scattering layers are known in the prior art and are available, for example, from INNOPTEC (Rovereto, Italy) as a PDLC film.
• the substrate with the scattering layer preferably functions as a spacer for the image display device (here: a TFT-LCD panel) in 3D mode, i.e. in the second position, at a desired distance z from the filter array.
• the image display device here: a TFT-LCD panel
• this distance z (preferably in the form of an air gap, ie no additional optically active components are necessary here) between the filter array and the image display device in the second position of the arrangement is generally between 0 mm and 20 mm.
• the distance z mentioned depends in particular on the pixel pitch of the image display device and on the optimal viewing distance for the spatial representation.
• struts attached laterally, with the aid of which the components are moved.
• the struts form a mechanical bridge to a drive.
• At least one stepper motor and / or at least one piezo element and / or at least one electromagnet and / or pump serves as the drive for the movement.
• various electromagnetic assemblies can be used, which allow translation.
• a pump can influence the air pressure between the filter array and the image display device in such a way that that the scattering layer moves into the desired first or second position depending on it.
• the scattering layer is designed as an additional scattering layer and not as an anti-glare matting layer, it can also be flexible and without a transparent substrate, e.g. be designed as a scattering film, its position being changed via the air pressure. To a certain extent, it is then sucked or pressed onto the filter array. Furthermore, an air-dynamic positioning of the flexible scattering layer is also possible in that forces resulting from an air flow act on the scattering layer. Hydraulic movement arrangements can also be used. Conversely, the filter array can also be moved in this way, depending on the movement variant implemented.
• the movement of one or more of the components of the arrangement is initiated manually by the user, with wheels or wings with eccentric curves being provided on the side of the arrangement according to the invention for simple handling, which are mechanically connected to the component for movement thereof.
• the user then exerts the driving force to move this component (with other components if necessary, such as with the transparent substrate).
• the scattering layer is segmented into surface sections and that the first and second positions can be predetermined independently for selectable surface sections of the scattering layer. This enables a partial switchover from a two-dimensional to a three-dimensional perceptible representation and vice versa, that is, a simultaneous 2D and SD representation.
• the lighting device which emits light distributed over a large area, and the filter array located in front of it can also be replaced by a light source which emits structured light in accordance with the filter array structure.
• a light source generally has a large number of small luminous surfaces, which are defined between black or opaque surface sections in a two-dimensional sional structure are arranged. Additional operating principles for the 2D / 3D switchability of autostereoscopic screens in the arrangement according to the invention can also be used, which are described in WO 2004/057878.
• FIG. 1 shows a schematic diagram of the arrangement according to the invention in a first, preferred embodiment variant
• FIG. 2 shows a schematic diagram of the embodiment variant according to FIG. 3 shows a schematic diagram of the embodiment variant according to FIG. 1 in a first position
• FIG. 5 shows a schematic diagram of the embodiment variant according to FIG. 4 in the second position
• FIG. 6 shows a schematic diagram of the embodiment variant according to FIG. 4 in the first position
• FIG. 7 shows a schematic diagram of the arrangement according to the invention in a third variant
• FIG. 8 shows a schematic diagram of the variant according to FIG. 7 in the second position
• FIG. 9 shows a schematic diagram of the embodiment variant according to FIG. 7 in the first position
• FIG. 10 shows a schematic diagram of the arrangement according to the invention in a fourth embodiment variant
• FIG. 11 shows a schematic diagram of the arrangement according to the invention in a fifth embodiment variant
• FIG. 1 2 shows a schematic diagram of the design variant according to FIG. 10 in the second position
• FIG. 1 shows a schematic diagram of the design variant according to FIG. 10 in the first position
• Fig. 4 shows a schematic diagram of the configuration variant according to Fig. 10 in a further possible second position
• Fig. 5 shows a schematic diagram of the configuration variant according to Fig. 11 in the second position
• Fig. 6 shows a schematic diagram of a sixth configuration variant in a second Position.
• the arrangement comprises an illuminating device 1 which emits light distributed over a large area, a filter array 2 located in the viewing direction B in front of the illuminating device 1 for structuring the light originating from the illuminating device 1, and in the viewing direction B in front of the filter array 2 and the image display device 4 arranged scattering layer 3a and a transmissive image display device 4 located here, for example, in the viewing direction B behind the scattering layer 3a.
• the scattering layer 3a on the image display device is preferably a conventional anti-glare matting, as is typical for LCD panels.
• the image display device 4 is rigidly connected to the lighting device 1 via device assemblies, which are not shown in the drawing.
• the filter array 2 is, for example, laminated onto a transparent substrate 6.
• the arrangement changes from a 2D display mode (FIG. 3) to one 3D display mode (Fig. 2) switched.
• FIG. 3 the structuring of the light originating from the illumination device 1 caused by the filter array 2 is essentially canceled due to the light scattering effect of the scattering layer 3a, and a fully resolved two-dimensional image is displayed on the image display device 4.
• An observer (not shown) can see the latter from viewing direction B, among other things.
• This image can be, for example, a perspective view of a scene or an object or text.
• the arrangement according to variant 1a is shown in FIG. 2, the scattering layer 3a being in a second position here.
• Such a 3D image can be, for example, an image composed of eight or more views of a scene or an object, as is known in the prior art.
• a scattering layer 3a, an image display device 4, a filter array 2, which is applied to a transparent substrate 6, and an illumination device 1 are again provided in the viewing direction.
• the transparent substrate 6 and the filter array 2 are rigidly connected to the lighting device 1, and the transparent substrate 6, filter array 2 and lighting device 1 are arranged to be movable together for the purpose of changing the distance a, as is also indicated here by arrow A.
• the movement can be implemented very easily.
• a 3D display mode second position of the arrangement
• a 2D display mode first position of the arrangement
• the mode of operation for achieving the 2D or 3D mode is analogous to that described in FIGS. 2 and 3 and therefore need not be repeated here.
• a third embodiment variant will be explained with reference to FIG. 7.
• the order of the individual assemblies corresponds to the order of the configuration variants already explained, the difference, however, is that the image display device 4 with the scattering layer 3a is arranged to be movable together for the purpose of changing the distance a, while an assembly of filter array 2, transparent substrate 6 and lighting device 1 is in relative rest or is arranged fixed to the frame. This corresponds to the configuration according to variant 3a.
• a 3D viewing mode is also set here for the distance a shown in FIG. 8 and a 2D viewing mode for the distance a shown in FIG.
• FIG. 10 The arrangement according to the invention is shown in FIG. 10 in a fourth embodiment variant, specifically with a transmissive image display device 4 located in the viewing direction B in front of the diffusion layer 3b, which is preferably designed as a TFT-LCD panel.
• the distance a between the filter array 2 and the scattering layer 3b can be changed, as indicated by the arrow A drawn on the scattering layer 3b.
• the dashed line indicates that the image display device 4 can, however, also be moved.
• Fig.l 1 shows a schematic diagram of the arrangement according to the invention in a modification of the fifth embodiment.
• Two scatter layers 3a and 3b are provided.
• the scattering layer 3a is (as in the first to third embodiment variants) preferably a customary anti-glare matting on a TFT-LCD panel (which corresponds to the image display device 4).
• the scattering layer 3b is a separately inserted one, as in the embodiment according to Fig.l 0.
• FIG. 1 A further schematic diagram of the embodiment variant according to FIG. 10 can be seen in FIG. 1 3, the scattering layer 3 b being in a first position.
• This image can be, for example, a perspective view of a scene or an object or text.
• FIG. 1 2 shows a schematic diagram of the fourth embodiment variant according to FIG. 10, but here the scattering layer 3 b is in a second position.
• the scattering layer 3b used is advantageously designed to be permanently light-scattering. It preferably has a high light transmittance, which should exceed at least 50%.
• the scattering layer 3b is formed as an optically scattering layer on a transparent substrate 5.
• Practical refinements provide, for example, a scattering film 3b which is customary for backlights of LCD panels and which is laminated onto a glass substrate.
• the laminated scatter foil preferably points towards the filter array 2.
• the scattering layer 3b and the transparent substrate 5 are moved, while the filter array 2 and the image display device 4 rigid, ie with an invariable distance from each other.
• the lighting device 1 is also immobile, i.e. arranged at a fixed distance from the filter array 2 and the image display device 4.
• the distance a between the filter array 2 and the scattering layer 3b is moved together with the image display device 4 and - if present - the transparent substrate 5 relative to the filter array 2, while the filter array 2 is rigidly arranged.
• This application is shown in Fig.l 3 and Fig.l 4 and corresponds to variant 3b.
• the lighting device 1 is also designed to be immobile.
• Fig.l 3 is to be interpreted here in connection with Fig.l 4 and the above description; not in connection with Fig.l 2, as above.
• the substrate 5 with the scattering layer 3 functions as a spacer in order to surround the image display device 4 in 3D mode, i.e. in the second position of the arrangement, to keep a defined distance z from the filter array 2.
• Fig.l 5 shows a schematic diagram of the embodiment of Fig.l 1, in which a separate scattering layer 3b and a scattering layer 3a are each in a second position.
• the image display device 4 including the scattering layers 3a and 3b and their transparent substrate 5 were moved.
• Fig. 6 shows a schematic diagram of a sixth embodiment variant, in which a static scattering layer 3al in the form of an anti-glare matting and a switchable scattering layer 3a2 are present, the embodiment being in a second position (3D mode) and an image display device 4 including both scattering layers 3al, 3a2 was moved. In this second position, the switchable scattering layer 3a2 is switched transparently.
• a 5 mm
• the first scattering layer 3a1 in the viewing direction corresponds to the anti-glare matting of an LCD panel.
• the second scattering layer 3a2 is located between the front polarizer and said anti-glare matting of the LCD panel.
• the LCD panel designed as an image display device 4 can, for example, be the LCD panel of a commercially available ViewSonic VX900 LC display with "anti-glare front polarizer” or Sharp LQ64D142 with “anti-reflective front polarizer” his.
• a conventional sidelight consisting of a light guide with CCFL tubes, or a backlight consisting of, for example, 16 CCFL tubes including control and various foils (e.g. diffuser, brightness enhancement films or dual brightness enhancement films) can be used as the lighting device 1 become.
• various foils e.g. diffuser, brightness enhancement films or dual brightness enhancement films
• An illuminated or plotted and developed photographic film which contains transparent and opaque surface sections, is preferably used as the filter array 2. These surface sections are arranged in a defined two-dimensional structure.
• the filter array can also be applied to the transparent substrate 6 in the form of printable ink. It is also possible to filter the filter array by inert structuring of a surface, for example by using laser beams.
• All substrates 5, 6 should be anti-reflective as well as possible by multiple coating.
• struts which have been attached laterally and can be used to move the respective components, can be present, as has already been explained in more detail above.
• the movement is carried out, for example, by at least one stepper motor and / or at least one piezo element and / or at least one electromagnet (not shown in the drawing).
• the respective actuator is mechanically connected to the component to be moved.
• the movement of the filter array 2 or other / further components can be carried out manually by the user, with wheels or wings with eccentric curves being provided on the side of the arrangement according to the invention for simple handling, which mechanically with the filter array 2 (and / or other components) are connected to move them. The user then exerts the appropriate force to move.

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• 2003
  • 2003-11-11 DE DE10353417A patent/DE10353417A1/de not_active Withdrawn
• 2004
  • 2004-09-02 US US10/532,951 patent/US8238024B2/en not_active Expired - Fee Related
  • 2004-09-02 WO PCT/EP2004/009761 patent/WO2005053320A1/de active Application Filing
  • 2004-09-02 EP EP04764720A patent/EP1683366A1/de not_active Withdrawn
  • 2004-09-02 JP JP2006538666A patent/JP2007515666A/ja active Pending
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