EP1574078A2 - Arrangement for two-dimensional or three-dimensional representation - Google Patents

Arrangement for two-dimensional or three-dimensional representation

Info

Publication number
EP1574078A2
EP1574078A2 EP03799495A EP03799495A EP1574078A2 EP 1574078 A2 EP1574078 A2 EP 1574078A2 EP 03799495 A EP03799495 A EP 03799495A EP 03799495 A EP03799495 A EP 03799495A EP 1574078 A2 EP1574078 A2 EP 1574078A2
Authority
EP
European Patent Office
Prior art keywords
light
mode
filter array
characterized
arrangement according
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03799495A
Other languages
German (de)
French (fr)
Inventor
Wolfgang Tzschoppe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
X3D TECHNOLOGIES GmbH
Original Assignee
X3D TECHNOLOGIES GmbH
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
Priority to DE10261657 priority Critical
Priority to DE10261657A priority patent/DE10261657A1/en
Priority to DE10317614A priority patent/DE10317614A1/en
Priority to DE10317614 priority
Application filed by X3D TECHNOLOGIES GmbH filed Critical X3D TECHNOLOGIES GmbH
Priority to PCT/EP2003/014605 priority patent/WO2004057878A2/en
Publication of EP1574078A2 publication Critical patent/EP1574078A2/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30Image reproducers
    • H04N13/356Image reproducers having separate monoscopic and stereoscopic modes
    • H04N13/359Switching between monoscopic and stereoscopic modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30Image reproducers
    • H04N13/302Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/32Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using arrays of controllable light sources; using moving apertures or moving light sources

Abstract

The invention relates to an arrangement for two-dimensional or three-dimensional representation, comprising a pictorial reproduction device (1) that encompasses a plurality of translucent image elements on which image information can be represented from different perspectives, a wavelength filter array (3), an illumination device that operates in at least two modes and can be triggered. Light reaches the viewer (7) from a first source of illumination (2) that is disposed behind the wavelength filter array (3) through at least one portion of the translucent filter elements and then through an associated portion of the image elements of the pictorial reproduction device (1) in a first mode of operation such that the scene or the object can be seen in a three-dimensional manner by the viewer. Light is emitted by a second source of illumination (4) and reaches the viewer (7) through the image elements of the pictorial reproduction device (1) without passing through the filter elements of the wavelength filter array (3) in a second mode of operation such that the scene or the object can be seen at least in part in a two-dimensional manner by the viewer (7). The inventive arrangement also comprises means providing uniform illumination in the second mode of operation.

Description

title

Arrangement for two- or three-dimensional representation

Field of the Invention The present invention relates to an arrangement for two- or three-dimensional representation.

Many prior art autostereoscopic display method is based on the principle optically reproducing a plurality of different perspective views of the object or the scene at the same time, but in each case to take appropriate measures so each eye of an observer only a selection of these perspective views separately visible. This creates a parallax effect that a spatial perceive allows the viewer tion with a clear focus and depth.

In the course of research in the field autostereoscopic display a variety of methods and devices have been developed which impart one or more viewers tool free spatial impressions. However, these arrangements often allow only a limited playback ordinary text or two-dimensional graphics ler, as for example in the US 5,457,574 and US 5,606,455 the case. For the user, however, it is of great advantage if he can selectively switch between a glasses-free 3D display and a high resolution, undisturbed as possible 2D display on one and the same device.

For visualizing the perspective views of an object in autostereosko- pischer representation among other electronically controllable color LCD displays are used, which are suitable for driving in the conventional manner and the two-dimensional image reproduction. In many applications, there is a GRO SSES interest (which will be referred to due to the strong spatial impression as a three-dimensional representation) to be able to make in a two-dimensional representation of the same scene or the same object a switch from the spatial autostereoscopic display. This is particularly relevant to the readability of text, because the image quality is better in the two-dimensional mode due to the higher image resolution.

With regard to such a switch from 2D to 3D and vice versa, a number of arrangements are known. Thus, WO 01/56265 of the Applicant describes a method for spatial representation, wherein the at least one wavelength filter array for a spatially perceptible representation provides. In a particular embodiment of this invention, an LCD screen acts as a wavelength filter array with variable transmittance. In order to switch between 2D and 3D display is achieved. A disadvantage here, however, that the light carrier substrates must penetrate through two LC displays, that is, by a plurality of polarization filters, color filters, liquid crystal layers, and other devices such as, so that the brightness is reduced in both the 2D and the 3D display ,

WO 02/35277 discloses a 3D display having a substrate containing strip first optical properties, and intermediate strips of second optical properties as well as a polarizer. Among other things, the 2D / 3D switching is achieved by polarization rotation or adding / removing a polarizer.

In the US 6.1 57.424 2D / 3D display is described in which two LC displays are connected in series and one of them serves as a switchable barrier.

Also, a 2D / 3D switchable display is known from US 6,337,721. Several light sources, a lenticular and a functionally essential diffuser are provided for hen. These components provide different illumination to achieve each a 2D or 3D display.

From US 5,897,1 84 an autostereoscopic display with a reduced thickness in the lighting device for portable computer systems is known which allows the zone-wise switching from 3D to 2D or vice versa. The disadvantage here is that it is a two-channel 3D display for only one viewer, who also still has to be in a fixed viewing position is. Further, the image brightness in 3D mode is less than the comparable two-channel 3D displays (meant are those 3D displays that represent exactly one left and exactly one right). In addition, strong and disturbing moire effects are to be exercised in not correctly selected in the depth of 3D display viewing positions. In 2D mode, the available for the 3D mode light is scattered with the aim, among other things, set aside by a homogenization of the lighting, the 3D image separation. Thus, gene is accomplished with switchable scattering disc only a lower image brightness than in the 3D mode in the 2D mode in the arrange-, since the scattering state of such lenses has a transmittance of less than 1. Appliances must be otherwise only with a high production expense.

Further, US 5,500,765 describes how the action of a lenticular itself by virtue of the folding In a complementary lens arrangement can be reversed. Thus, the 3D display is virtually shut down. This approach works, initially with lenti- kularsystemen and also requires the production of an exactly complementary lens array.

In DE 100 53 868 C2 of the Applicant, an arrangement for selectively 2D or 3D display will be described. Here, two light sources are provided, always off the 3D lighting for 2D display or the partial 2D display or the light emitted by their light is blocked. Disadvantageous festzuhal- here is th that the 2D illumination light with respect. Luminance can not be made sufficiently homogeneous. Further, the use of a commercially available optical fiber illumination as 2D usually whose macroscopic structure for the viewer or viewers is visible and generates a disturbing pattern. However, a visually invisible microscopic structure is complicated and expensive to manufacture.

Description of the Invention

From this state of the art on the basis of the invention is the object of the switchability of the above-mentioned arrangement between a 3D mode, in which at least one, but preferably several viewers without aids perceive a spatial image, and to simplify a 2D mode and the to improve image quality, especially in 3D mode. Further, the image quality in the 2D mode is not inferior to that of conventional 2D monitors substantially, ie to the viewer or the bright, full-resolution images can be displayed. Optional larger image brightness in 2D than in 3D mode to be achieved. For the 2D mode in particular to a very homogeneous illumination, ie a contrast of almost zero for the appropriate lighting can be achieved. The arrangement should be dimensioned so that there is sufficient space for the component to the 2D / 3D switching is present, moreover, they should be able to be implemented with largely commercially available assemblies.

This object is inventively achieved by an arrangement according to the preamble handle of claim 1 comprising the characterizing features of claim 1.

For purposes of the 2D representation that is, a second illumination source is switched on in the second mode. Furthermore, means are for the uniform, that is as homogeneous as possible illumination in the second mode is provided.

As a second illumination source is a transparent plate may be used, for example, of fluorescent material. This is laterally arranged, for example, vertically irradiated thin rod-shaped fluorescent lamps and excited to fluoresce.

In an advantageous embodiment of the invention designed as a plate-like light conductor flat illumination source is provided as the second illumination source, wherein the light guide is formed with two opposing major surfaces and circumferential narrow surfaces and facing away from the image playback device and / or facing major surface of the radiation plane or the Abstrahlebenen corresponds, and the light guide from one or more laterally arranged light sources is fed, wherein the light is coupled through one or more of the narrow surfaces of the light guide, there partially reciprocated by total reflection on the major surfaces and is herreflektiert and partly in the radiation plane corresponding upper surface or the Abstrahlebenen the corresponding large area is extracted.

In a preferred embodiment of the invention, which allows a homogeneous and bright illumination in the second mode, the first illumination source is in the second mode in addition to the second illumination source switched on, is provided as a waste beam plane, only the image reproducing device remote from large area is provided, and are useful for uniform illumination provided only such regions in the radiation plane, which are congruent in projection along the plane normal to the wavelength filter array at substantially the space occupied by the opaque areas of filter elements. So the second illumination source emits substantially at the points of light that correspond to the area occupied by opaque filter elements areas on the wavelength filter array.

The two sources of illumination are dimmable advantageous designed, that its brightness can be adapted to the ambient brightness. The wavelength filter array is applied, for example on the radiation plane of the corresponding upper surface. Subarray all arrays of filter elements are meant, in addition to a grid-shaped arrangement including strip-shaped arrangements, the strips vertically, but may also run with large deviations from the vertical, if a three-dimensional viewing in the first mode of operation is still possible. Moreover, translucent and opaque filter elements equivalent grayscale filter elements and polarizing filters can be used in addition to (in the visible range), of course.

Further, it may be provided that the corresponding one of the radiation plane large surface is provided with a total reflection in the interfering structure provided for radiating areas. This structure may for example consist of particles. Preference is given to the interference capacity of the particles is on the extension of the radiation plane across inhomogeneous between two limit values, the limit values ​​are dependent on the particle density in the coating. The interference capacity of the particles can also be substantially constant taken in each of the coated areas in itself.

In a further advantageous embodiment, two opposing parallel narrow faces are provided for coupling light, and the interference capacity of the coated areas is xl with growing distances, aligned x2 in parallel to the narrow faces, the strip-shaped surface portions up to a common maximum increasingly formed progressively.

Another embodiment provides contrast that the interference capacity of the particles is homogeneous across both in each of the regions as well as over the extension of the radiation plane substantially. These preferably two opposing narrow faces in the vertical direction are provided for coupling light. In selected regions of the wavelength filter array, which is in each case one or more row and / or cleavage th comprise non-overlapping and completely cover the wavelength filter array in its entirety, the ratio of the area contents of the area occupied by the translucent in predetermined wavelength ranges filter elements surface areas to the light-opaque filter elements occupied area fields each defined as a function of the maximum achievable luminance in those surface sections in the radiation plane of the flat illumination source, each corresponding to a so-selected region of the wavelength filter array in projection along the surface normal. In this connection, it is to some extent the filter structure (row-wise and / or column-wise) adapted to the respective conditions in the light guide: serving at constant interference capacity of the coupling-out particles is usually at the edge, that is close to the narrow surfaces for coupling light, by virtue of the second illumination source comprises a relatively large luminance to be obtained, which decreases towards the center. To compensate for this luminance drop the ratio of the area contents of the area occupied by the translucent in predetermined wavelength ranges filter elements surface regions is related to the space occupied by opaque filter elements surface areas now to the Einkoppelschmalflächen selected to covered with opaque filter elements surface areas smaller towards the edge than in the middle of the second illumination source , Essential function is enhanced by coupled in the middle of the light guide on account of the particles with respect to the edge of light from the light guide. Overall, this situation compensates the property of the light guide to emit as much light as close to the input surfaces, straight. Thereby, the second illumination source acts substantially as a homogeneous light source.

Said ratio of opaque to in predetermined wavelength ranges light transmissive filter elements may be on the edge to the narrow faces, which serve the coupling of light, for example 7: 1. If now with the second source of illumination, ie the flat illumination source, approximately in the middle (ie between the two narrow faces, is injected via the light), achievable luminance is slightly smaller than at the edge, one can there, for example to the ratio of opaque in predetermined wavelength ranges light transmissive filter elements about select 1 0 to 1, so that there, due to the larger particle surfaces or the greater number of the particles - more light is coupled out - which are so arranged on the provided with opaque filter elements surface sections. Overall, the second illumination source is achieved in this way by virtue of such a uniform luminance distribution. Of course, still other provided between the surface sections with the above-defined ratios of 7 to 1 and 10 to 1, such as ratios of 8: 1 and 9: 1 or even non-integer ratios.

that even the perceived 3D effect will be affected due to the thus influenced wavelength filter array, it remains to be noted; this is particular to recirculate to-that the monocular each visible range of views and ratio described in particular of the relative proportion of image information from different views by said above is directly affected. Further, the total reflection coating disturbing another, the light absorbing substantially cover layer may be applied.

the inventive arrangements described so far are also characterized in that the lighting device is provided with a control for the first illumination source for generating a luminance with respect to the plane of the wavelength filter array advantageous. Thus, inhomogeneities of the brightness of the second illumination source may be compensated, whereby shortcomings in terms of homogeneity of the perceived brightness of the 2D image to be compensated in the second mode. Also, the luminance gradient in the first illumination source for homogenizing the luminance in 3D mode, ie in the first mode, to serve.

Instead of additionally turn on the first illumination source, a homogeneous loading can lighting alone reach the second light source when a weak diffusion plate is inserted behind the image display device.

a discharge lamp with a plane parallel to the wavelength filter array cover glass on the side facing the wavelength filter array side is provided by way of example in the lighting device as the first illumination source. Depending on the configuration of the first illumination source having a discharge lamp can be achieved in this case via a corresponding control of the aforementioned luminance gradient also switchable. On the inside of the final glass a coating of phosphor is applied.

The coating with phosphor is advantageously applied only in areas that are coextensive with the area occupied by the translucent in predetermined wavelength ranges filter elements areas in projection along the plane normal to the wavelength filter array substantially. This ensures that all the light emitted by the phosphor is essentially not absorbed by opaque element filter or blocked, but rather back-sided illuminated image reproduction device is ensured.

It is advantageous if the wavelength filter array is applied to the outside of the final glass.

Furthermore, it can be provided that is coupled out by means of optical elements in the second mode, a part of the light of the first illumination source and coupled back into the second illumination source, said part of the area occupied by the translucent in predetermined wavelength ranges filter elements surface areas by the ratio of the light-opaque filter elements area occupied areas in the wavelength filter array is fixed. For training and coupling in particular light conductor and / or reflective elements are suitable in this context.

Moreover, an optically active material, preferably a filter plate or a thin film with prismatic acting micro may be between the first and second illumination source krostruktur be arranged, whereby the light of the first illumination source having angles of incidence greater than the (border) angle of total reflection of the second illumination source in the substantially does not enter the second illumination source. A filter plate with egg nem several millimeters thick filter array for vignetting of the light beams is also applicable here. The order of the thickness of the filter layer corresponds approximately to the magnitude of the light transmitting filter elements, it may for example be between 0.1 mm and 0.3 mm.

Another embodiment of the inventive arrangement provides that individually controllable as a second illumination source, a plurality of, radiating in the direction of the image display device light light sources are provided, which are also formed as opaque filter elements in the wavelength filter array. The light sources may be provided substantially flat polymer layers in this context, for example, light.

The object of the invention is also achieved by an arrangement for the display of images of a scene or an object, with an image reproduction device from a plurality of translucent pixels on which image information of a plurality of perspective views of the scene or object can be displayed, with an in sight of a viewer the image reproducing device downstream array, which are arranged a plurality of rows and / or columns addressable and individually contains provided in predetermined wavelength ranges of light emission lighting sources, light is emitted in a first mode only for such an illumination sources from which light by an illumination source, respectively associated part of the image elements of the image display device passes through to the viewer, so that the image reproduction is performed three-dimensionally, and in a second mode in addition by at least one further s part of the illumination sources is emitted light passes from the light without any particular assignment by picture elements of the image reproduction device to pass to the viewer, so that the image is at least partially reproduced two-dimensionally. As illumination sources substantially flat, light-emitting polymer layers can be provided here. In contrast, it is also possible to use as illumination sources, a liquid-crystal display.

The object of the invention is also achieved by an arrangement according to the preamble of claim 2, wherein a connectable and disconnectable light outcoupling is mounted as a means for uniform illumination in the second mode at least one of the large surfaces.

When switched on and off light outcoupling is preferably a switchable scattering layer, which is located at a small distance from the wavelength filter array, preferably in contact with just that.

The switchable scattering layer is switched scattering transparent in the first mode and in the second mode. the switchable scattering layer is preferred in this case connected in full-surface scattering in the second mode. This corresponds to the case where a two-dimensionally perceptible image is displayed on the entire image area of ​​the image display device.

Further embodiments of the invention provide that only partial areas of the switchable scattering layer scattering are switched in the second mode. The partial surfaces are preferably narrow and strip-shaped and can have various widths. In this case, each two next adjacent such a strip-shaped part surfaces may layer be separate, so that the light output level from the light guide pro (sufficiently large) area unit at different locations of the optical waveguide is different in size by permanently transparent strip-shaped part surfaces on the switchable scattering. Permanent transparent strip-shaped part surfaces may be permanently transparent conductor sections connected in a switchable scattering layer or blank, is not provided with a switchable light scattering material areas of the particular.

It is thus by local variation of the width and the local frequency of the strip-like partial surfaces of the switchable scattering layer and the respective local light output level is determined ( "geometric adaptation of the light-outcoupling degree" with the aim of Leuchtdichtehomogenisierung). This makes it possible, in total a more homogeneous illumination of the image display device by virtue of the second to achieve illumination source, such as when the light output level close to the light in-coupling side arranged light sources is less than a certain distance away. it is also possible that the switchable scattering layer is switched to the second mode at different locations to different degrees springy, so that the light extraction degree from the light guide at different points of the light guide is also different in size. in order to achieve different degrees of scattering bodies at various places of the switchable scattering layer ibid are applied pairwise different control signals.

This latter "electrical adjustment of the light extraction degree" can be combined with the previously described geometric adaptation also to achieve a particularly homogeneous 2D lighting.

It is also advantageous if the opaque filter elements of the wavelength filter arrays on the side facing the observer side diffusely scattering provided, for example, with a matt white coating, are. In this way, light which is at the side facing filter array coupled back diffusely scattered, whereby the light in the second mode is effective and lighter. Alternatively, the opaque filter elements can also be provided with a reflective, mirror-like layer.

The light conductors in the second illumination source comprises also preferably planar and / or structured surface portions on its major surfaces. Such structuring can take further influence on the respective local Lichtauskoppelgrade.

The switchable scattering layer is for example a liquid crystal scattering layer - in particular those having a cholesteric-nematic transition - which light scattering effect at a suitable applied electric voltage and transparent in the absence of voltage. Preferably, a switchable scattering disc of the type "Polymer Dispersed Liquid Crystal (PDLC) film" of the company Sniaricerche (Italy) is used as switchable scattering layer used.

Further, it is possible to further improve the homogeneity and to increase the brightness to turn in the second mode in addition to the second light source and the first illumination source. At the same brightness on the surfaces of the opaque (corresponding to the light of the second illumination source) and the light permeable filter elements (corresponding to the light of the first illumination source) produces a (macroscopically) homogeneous 2D lighting for the second mode.

The advantages of this last embodiment are versatile. Specifically, the light guides for the second illumination source is easy to manufacture, since no expensive Masterher- positions for injection molding tools for the microstructuring of the surface light guide are needed. When using liquid crystals in the switchable scattering layer a microscopic light outcoupling is generated immanent that in the 2D mode (second mode) can not be resolved with the naked eye. The Va above-described variants to the geometric and / or electrical homogenization of the lighting in the second mode allows an optimization of the second illumination source for various types and sizes of displays. An essential advantage of the invention is that no visually disturbing or visible Lichtauskoppelstrukturen on the light guide or moire phenomena are seen in the first mode. Compared to the prior art, the light guide must not be placed in close contact with the filter array, which brings production-related advantages.

The object of the invention is further achieved by an arrangement according to the preamble of claim 2, wherein a switchable scattering disc is disposed as a means for the uniform illumination in the second mode between the light guide and the image display device, the transparent in the first mode the second and in the mode is switched at least part of the surface scattering so that the contrast of the brightness in the second mode permeating through the switchable scattering disc light is reduced. The reduction in contrast is the homogenization of the lighting in the second mode, that is in the mode to the two-dimensional representation.

Also in the latter arrangement of the invention as well as the first illumination source may be switched on in addition to the second illumination source in the second mode. In contrast to the first, front-described embodiment of the invention, however, the brightness of the first light source (which light is radiated through the light-permeable filter elements and other assembly components toward the viewer) can be very much greater than the brightness of the second illumination source (whose light in particular the opaque radiated filter elements towards the viewer). An even higher brightness is achieved in the second mode.

The embodiment of the invention described above offers the further advantage of a particularly high brightness in the second mode, as a feedback of light into the light guide is achieved. When switching on the second illumination source and the first loading in the second mode occurring brightness contrasts are compensated for by the use of springy connected lens. Especially in this embodiment, the light guide must advantageous not necessarily structured microscopic, since its structure in the second mode by the Streuschei- be made visually invisible. Overall, a very good homogenisation and brightness of the illumination light for the second mode is achieved.

Furthermore, the object of the invention is also achieved by an arrangement according to demanding 38th

Because two relatively slidable wavelength filter arrays are used, this embodiment also allows for the variation of the image brightness in the first and / or second mode of operation, such as when different relative positions of the filter arrays to be taken to each other. In the variation in the first mode, it is also possible to adapt the respectively resulting "summary" filter array for different numbers of views to be displayed.

which are arranged to prevent re-MOI effects without optical distance from one another two identical filter arrays are preferably used. The filter array can be formed entirely without opaque filter elements for the rest.

but it can also be provided more than two wavelength filter array having a (total) number W, of which at least Wl wavelength filter array are displaceable bar.

Preferably, the displacement of each movable wavelength filter array is provided in the line direction of the grid of image elements of the image reproducing device. Particularly preferably, the displacement is provided for each movable wavelengths, if such a period is genfilterarrays smaller than the horizontal period of the located on the respective wavelength filter array light transmissive filter elements available.

The displacement of each displaceable wavelength filter array is usually ensured by an electro-mechanical actuator such as a piezo actuator.

The object of the invention is further achieved by an arrangement according to the preamble of claim 2, wherein the triebsart as agents for uniform illumination in the second loading an optical scattering film is provided between wavelength filter array and optical fiber, which is preferably the light white diffusely reflecting or . remitting is configured. Such a film is amorphous in its simplest form and has homogeneous optical characteristics such that it scatters incident light diffusely. It can therefore also be carried out not only thin but mechanically very flexible and is also inexpensive to produce. In a preferred embodiment of the invention is therefore intended to remove the film for switching to the first mode between the wavelength filter and light guide. This can but preferably by means of an up-and-roll-off mechanism done by hand.

The achievable brightness in the second mode of operation is therefore the same as the brightness of conventional 2D displays, the additional illumination by the first illumination source may be omitted to save energy. The lighting in the second mode is homogeneous, it will not occur moire stripes.

However, it is also possible to additionally turn on the first illumination source when the film, for example, has a non-zero transmissivity, whereby the image brightness can be increased.

In a further embodiment of the invention, the film is designed as an electrophoretic component. It is transparent in the first mode, and optically diffuse scattering in the second mode. The switching between the second and first operating mode takes place by influencing the electrophoretic properties. The essential advantage of this embodiment is that can be dispensed with the mechanical removal or introduction of the foil.

Also, the wavelength filter array can be designed as an electrophoretic component. It is in this case provided with a driver for driving the opaque filter elements. These are light-absorbing and light-reflecting in the second mode in the first mode, ie, the light connected diffusely scattering or remitting.

Finally, the object is also achieved by an arrangement for the display of images of a scene or an object, with an image reproduction device from a plurality of light-transmitting, arranged in a grid of rows and / or columns pixels on which image information of a plurality of perspective views of the scene or are displayed object, with an in sight of a viewer of the image display device downstream, planar, controllable wavelength filter array consisting of a plurality of arrayed in rows and / or columns of filter elements, a portion of which is translucent in predetermined wavelength ranges, with in viewing direction behind the wavelength filter array angeordne- th illumination source, which is preferably a flat illumination source, wherein in a first mode the remaining portion of the filter elements is opaque and controlled by the illumination source light through at least a portion of the light transmissive filter elements and passes subsequently through an associated portion of the image elements of the image reproduction device to pass to the viewer, so that the scene or object for the viewer is perceived three-dimensionally, wherein the wavelength filter array is configured as an electrophoretic component and in a second mode of the rest of the part of the filter elements is translucent controlled so that the scene or object for the viewer is two-dimensional perceptible.

With this arrangement to dispense with the additional second source of illumination in the second mode all, so it omitted components such as the light guide and the illumination thereof. Thereby the quality of the display is improved in the first mode.

It may also be advantageous if predominantly in any of the so far described embodiments of the inventive arrangements in the respective first operating mode for at least partially three-dimensional representation of each observer eye, but not limited to a particular selection from the displayed image information from sev- eral perspective views of the scene or object looks, creating a spatial impression is created in the viewer. Examples for generating a spatial impression on this premise are, for example described in DE 201 21 318 U and WO 01/56265 of the Applicant.

The embodiments described can in this case be all designed such that an image during the remainder of a different image is displayed two-dimensionally, in the image reproduction device on only a part displayed three-dimensionally, and vice versa, that is, each different part surfaces are driven in different modes.

Of course, should be in the respective second operating mode, only a two-dimensional image - and not a composite of a plurality of views of image - are displayed, which is easily allows a suitable control of the image reproducing device.

Brief Description of Drawings

The invention is explained in more detail below with reference to drawings. It shows - usually not to scale -

Fig.l is a general schematic diagram of a first embodiment of inventive arrangements,

2 shows an exemplary wavelength filter array for use in the first embodiment of inventive arrangements (sectional representation),

Figure 3 is an image combining procedure for the representation of image information of different (here 9) are views on the image reproduction device (detail view),

4 shows a monocular view example in the conditions prevailing according to Fig.2 and Fig.3, Fig.5 another exemplary wavelength filter array for use in the first embodiment of inventive arrangements (sectional representation),

6 shows a further image combining procedure for the representation of image information of different (in this case 8) are views on the image reproduction device (detail view), Figure 7 a monocular vision example, in the basis of the ratios according to Fig.5 and Fig.6,

8 is a schematic representation of the interaction of the first and second illumination source for the purposes of the homogeneous illumination of the image reproducing device, Figure 9 a further exemplary wavelength filter array for use in the first embodiment of inventive arrangements (sectional representation),

Fig.l 0 is a further image combining procedure for the representation of image information of different (here, 1: 1) views on the image reproduction device (detail view), Fig.l 1 is a monocular view example in the conditions prevailing by Fig.l 9 and 0,

Fig.l 2 is another exemplary wavelength filter array for use in the first embodiment of inventive arrangements (sectional representation),

Fig.l 3 is a further image combining procedure for the preparation of image information of different (here 9) are views on the image reproduction device (detail view),

Fig.l 4 a monocular vision example, in the basis of the ratios according to Fig.l and 2 Fig.l 3,

Fig.l 5 planning a special form of the first embodiment of the arrange- invention, in the light of the first illumination source having angles of incidence greater than the angle of total reflection of the second illumination source substantially does not enter the second illumination source,

Fig.l 6 is a further exemplary wavelength filter array for use in the first embodiment of the inventive arrangements (detail view), Fig. 1 7 another exemplary wavelength filter array for use in the first embodiment of the inventive arrangements (detail view),

Fig.l 8A is a schematic diagram of a second embodiment of inventive arrangements, 8b Fig.l a schematic diagram of the possible structure of a connectable and disconnectable light outcoupling,

Fig.l 8c a schematic diagram to another possible design of a switched on and off light outcoupling,

Fig.l 9 is a schematic diagram for the first mode of the second embodiment according inventions dung arrangements,

20 is a schematic diagram for the second mode of the second embodiment of inventive arrangements,

Figures 20A another schematic diagram for the second mode of the second embodiment of inventive arrangements, Fig. 1 is a schematic diagram for a particular embodiment of connectable and disconnectable light outcoupling structure, which will ensure that the light output level from the light guide per unit area at different points of the light guide is different in size,

22 shows a schematic diagram of another particular embodiment of the switched on and off switchable light outcoupling which shall ensure that the light output level of the optical fiber per unit area varies in size at different points of the light guide,

Figure 23 is a schematic diagram for a third embodiment of inventive arrangements, Figure 24 is a schematic diagram for a fourth embodiment of inventive arrangements, shown here in the first operating mode,

Fig.25 a schematic diagram of a fourth embodiment of inventive arrangements, shown here in the second mode,

Figure 26 illustrates an exemplary filter array for use in the third embodiment according inventions dung arrangements,

Fig.27 is a relative position of two filter array for use with each other in the first mode in the third embodiment of inventive arrangements,

Fig. 28 is a particular embodiment of a wavelength filter array,

Fig. 29, a further particular embodiment of a wavelength filter array, Fig. 30 an electrophoretic wavelength filter array,

Fig. 31 is a disconnectable electrophoretic wavelength filter array,

Fig. 32 is an electrophoretic, optical scattering sheet, and

Fig. 33 is a mechanically scrollable up and optically scattering sheet. Detailed Description of the Drawings

Fig.l shows a general schematic diagram of a first embodiment of an inventive arrangement with a picture display device 1 elements of a plurality of images, the in sight of a viewer 7, a wavelength filter array 3 with filter elements, of which one part, the other part is transparent opaque is followed. In a first mode passes from one arranged behind the wavelength filter array 3 first illumination source 2 through at least part of the light transmissive filter elements of the wavelength filter array 3, and subsequently by an assigned part of the image elements of the image display device 1 through to the viewer 7, so that the scene or object is three-dimensionally perceived by the viewer. 7 In a second mode additionally passes from a second illumination source 4, which is arranged an intermediate wavelength filter array 3 and the image display device 1, having a substantially paral- Lele radiation plane to the wavelength filter array 3, light from this radiation plane, starting with the pixels of the image display device 1, but not through the filter elements of the wavelength filter array 3 passes, so that the scene or object for the viewer 7 is two-dimensional perceptible to the viewer 7 at least partially. Only those regions in the radiation plane of the second illumination source 4 are provided for lung Lichtabstrah- substantially coincide in projection along the plane normal to the wavelength filter array 3 with the space occupied by the opaque areas of filter elements.

The wavelength filter array 3 may for example have a thickness of a few l Oμm to a few millimeters; shown thick in Fig.l only for clarity.

For purposes of the 2D display so an additional light source, the second illumination source 4 is turned on in the second mode, which radiates substantially at the points of light corresponding to the covered with opaque filter elements Berei- surfaces on the wavelength filter array. 3

the arrangement is advantageously designed such that there is provided as the second illumination source 4 is a formed as a plate-like light conductor flat illumination source, wherein the light guide is formed with two opposing major surfaces and circumferential narrow surfaces and corresponds to the image display device 1 is remote from major surface of the radiation plane, and the light guide is supplied by one or more laterally arranged light sources 5, which may be provided with additional reflectors. 6 Here, the light via one or more of the coupled narrow surfaces in the light guide, there partially reciprocated by total reflection on the major surfaces and is flexed herre- and partly in the radiation plane is coupled out of the corresponding upper surface.

The wavelength filter array 3 is here applied on the radiation plane of the corresponding large-before the light guide.

It is further provided that the corresponding one of the radiation plane large surface is provided with a total reflection coating of interfering particles in the intended areas to radiation. The interference capacity of the particles is homogeneous both in each of the regions as well as over the extension of the radiation plane across substantially. The particles are, as already mentioned, is preferably provided on the opaque areas of the filter array, and at the same time to said major surface.

As a radiation plane, the large surface of the light guide is one who has direct contact with the spurious particles, since the corresponding disturbance of the directions of light propagation in the light guide for the purpose of the final light extraction takes place (on the other major surface of the light guide).

Furthermore, two opposite parallel narrow faces of the light guide are provided for coupling light, as is indicated in Fig.l by the two light sources. 5

The wavelength filter array 3 may for example have one of the structures, such as 201 21 318.4 U are described in the DE. Further, preferably, each presented in said typeface combinations come to the respective filter array used.

With reference to Figures 2 to 4 shows a particularly advantageous embodiment of the invention is explained in more detail below. In this example, in selected areas of the wavelength filter array 3, each comprising one or more lines do not overlap and the wavelength filter array 3 ken completely bedek- in its entirety is the ratio of the area contents of the area occupied by the translucent in predetermined wavelength ranges filter elements surface areas to that of opaque filter elements occupied predetermined illumination source surface areas respectively depending on the maximum achievable luminance in those surface sections in the radiation plane of the plan, each corresponding to a so-selected region of the wavelength filter array in projection along the surface normal. For a better understanding is to be noted here that the opaque filter elements - the co-responsible for the light outcoupling noise particles are provided immediately - as previously indicated above. Therefore, the surface areas shown in black in Figure 2 ER- appear upon illumination to the naked eye does not necessarily actually black, but the color of the spurious particles - which is preferably white.

With reference to Figure 2, for example, in the first five lines of the filter array 3, WEL ches here is to scale and greatly enlarged scale, a ratio of 7 opaque filter elements to 1 of a transparent, ie (in a certain wavelength range here: VIS- range) implements light transmissive filter element. Assuming that the narrow sides of the light guide for coupling light are oriented horizontally and which are at - in the plane of the drawing - above and area below the filter, so the light guide contained in the same is first coupled out most of the light at the upper and lower edge and it is there - compared with about the center of the filter surface and thus also of the light guide - a relatively high luminance of the outcoupled from the light guide light achievable.

To compensate for this luminance drop from the edge to the center, the ratio of the area contents of the area occupied by the translucent in predetermined wavelength ranges filter elements surface areas to the area occupied by opaque filter elements surface regions with respect to the occupied with opaque filter elements surface regions will now be on the edge of the Einkoppelschmalflächen towards small ner selected than in the center of the second illumination source 4, as can be seen also in Fig.2. Function is substantially characterized light coupled reinforced in the center due to the larger Störpartikelbereiche from the light guide than at the edge. Overall, this very fact compensates the property of the light guide to radiate near the coupling-in a lot of light. Thus acts as a source of the second illumination light source homogeneous.

In the example of Figure 2 in the middle of the light guide, and thus the filter array 3, the said ratio of the opaque light-permeable filter elements is to be in predetermined wavelength ranges 10 to 1, so that there tikelflächen because of the greater Par or larger number of particles - which are so arranged on the filter elements provided with the opaque surface portions - more light is coupled out, so that overall a substantially homogeneous luminance distribution by virtue of the second source of illumination is achieved. also other ratios of 8: 1 and 9 are of course provided to 1 between the surface sections with the above-defined ratios of 7 to 0 or from 1: 1.

The Figure 3 shows an exemplary image combination for the image information from multiple views. This takes into account that due to the structure of the wavelength filter array, the arrangement of the image information must be changed. Each box corresponds egg nem pixel of the image display device 1; the column R, G, B are examples of the red, green and blue sub-pixels of an LCD configured as an image display device 1. The numbers in the box represent the view from which the image information originates at the respective position. The drawing is not to scale and strong ßert Magni-.

During eight views are used in Figure 3 in the upper rows, it is below 9 views. The bold lines correspond to two transition lines that effectively ensure the transition from 8 to 9 are views.

4 shows a monocular view example of a viewing position in consideration of the described in the description of Fig.2 and Fig.3 conditions. Of course, this example shows only a section view, more specifically, the designated in Figure 2 with 8 lines of the wavelength filter array. 3

This makes it easy to understand that even the perceived 3D effect will be affected because of the above-trained wavelength filter array 3; This is particularly due to the fact that the monocular each visible range of views and ratio of the areas described in particular of the relative proportion of image information from different views by said above is directly influenced on the wavelength filter array. 3

Further, it is - for excellent opacity of the opaque filter elements - on which the total reflection interference coating applied further, the light absorbing substantially covering layer.

To illustrate another example of the configuration of the variation of the ratio of areas of opaque filter elements to the areas with transparent in certain wavelength ranges by virtue of filter elements will now be made to Figure 5 to Figure 8 reference.

5 shows - increased again not to scale and strong - a further wavelengths genfilterarraystruktur, for which the ratio of opaque to translucent filter elements - and with it the proportion of spurious particles for coupling out light from the light guide - from the top and bottom toward the common center increases. Thus the advantageous effect described above is obtained that a substantially homogeneous light emission from this is achieved due to the increased extraction rate in the middle of the light guide. As for Figure 2 also applies here the argument that the filter elements shown in black in principle have the color of Störpar- Tikel from the side facing the light guide side, preferably white. If they are not from the second source of illumination - here the light guide - subjected to light, they actually appear black or illuminating substantially no light, as shown in Figure 5. This is for the first mode, the 3D mode, significant.

In Figure 6 is an example for the filter array of Figure 5 suitable image combination to see which leads in the 3D mode (first mode) to a spatial impression. Here again, the columns R, G, B for Farbsubpixelspalten of red, green and blue. Thus, the exemplary monocular view shown in Figure 7 is possible. The viewer's eye at the corresponding position therefore sees mainly the view 2, but also to smaller proportions the views 1 and 3. Would the corresponding viewer's eye, for example, one - drawing not shown - mixture of see, for example, the views 5 and slightly 4 and 6 , this viewer perceives a three-dimensional image. Also from this is again apparent that the structure of the Filterar- rays 3 influencing ratio of opaque to translucent filter elements (and thus the area ratio of the noise particles having at which they do not bearing areas) will have direct and inseparable influence on the perceived 3D image.

To move now, for example in the second mode, the 2D mode, the second illumination source 4 is in addition to the first illumination source 2 switched on. In the example selected here, therefore, the lamps 5 is turned on, the light is coupled into the light guide. Due to the described above influenced light extraction from the light guide is then emitted to be substantially homogeneous light from the light guide. The non-interfering particles provided with surfaces on the corresponding upper surface of the second flat illumination source 4, that of the light guide, corresponding to the areas on soft in certain wavelength ranges light permeable filter elements are located. For example, are here for the complete visible spectrum essentially transparent, ie transparent filter elements, which are shown in Figure 5 white. By this the first illumination source 2 enters the second mode still light to pass, so that the light of the first light source 2 and the light of the second illumination source 4 added into this second mode of operation is substantially homogeneous. It is here practically a very low contrast in the summary for the image display device 1 illumination of first and second loading illumination source 2, 4 achieved. Said contrast is close to 0. This is indicated in Figure 8 so that each of the limitations of the originating from the two light sources 2, 4 light are located on the surface under consideration. The white representation of the faces to symbolize the light emission. Figure 8 thus shows a schematic representation of the interaction of the first and the second light source 2, 4 for the purpose of homogeneous illumination of the image reproducing device. 1 In other words, the first illumination source 2 corresponds to interacting with the wavelength filter array 3 of the 3D lighting of the image reproduction device 1, while the second illumination source 4 quasi the function of a 2D has additional lighting, as they for the 2D mode in addition to 3D that is, the first illumination source 2 is switched on lighting.

Of course, the image content on the image display device 1 for the second mode should be a two-dimensional. This 2D image content is perceived in two dimensions in the usual way.

the lighting device with a control for the first illumination source 2 for generating a luminance gradient of the plane of the WEL lenlängenfilterarrays 3 is advantageous in terms provided. Thus remaining inhomogeneities of the brightness of the second illumination source 4 can be compensated for, if necessary, but whereby shortcomings in terms of homogeneity of the perceived brightness of the 2D image to be compensated in the second mode. Also, the luminance gradient, in the first light source 2 for homogenizing the luminance in 3D mode, ie in the first mode, serve.

In this example, in the lighting device as the first illumination source 2 is a discharge lamp having a planar, provided for wavelength filter array 3 parallel cover glass on the wavelength filter array 3-facing side. Depending on the design of the first light source 2 with formation of a discharge lamp can thus be achieved through appropriate control of the aforementioned luminance gradient optionally connected. On the inside of the final glass a coating of phosphor is applied.

The coating with phosphor is advantageously applied only in areas which are substantially congruent in projection along the plane normal to the wavelength filter array 3 with the space occupied by light-permeable in predetermined wavelength ranges filter elements areas. This ensures that all the light emitted by the phosphor is essentially not absorbed by opaque filter element, but rather the image display device 1 illuminates the back is ensured. It is advantageous if the wavelength filter array 3 is applied to the outside of the final glass. Further exemplary embodiments are indicated in the Figure 9 to Fig.l 1 or in the 2 to Fig.l Fig.l 4, wherein in the figurative sense, respectively, the description of the Figure 5 to Figure 7 is equally valid here and therefore, should not be repeated here. As a special feature of these aforementioned filter array forms should however be noted that here from line to line the width and varying the number of light-transmissive in certain wavelength ranges filter elements in respectively the same large filter elements. In order for the 3D impression, the same time on the other hand, the light output due to the changed structure of the wavelength filter array 3 and thus the arrangement of the spurious particles is influenced on the one hand. In particular, such refinements allow the increase in the distance between the filter array 3 and the image display device 1, whereby the compulsion to use of thin optical fiber is eliminated.

As the distance between the filter array 3 and the illumination device 1 may generally be increased, will be outlined in the following. For the distance D between WEL lenlängenfilterarray 3 and the image display device 1 applies in the case of an image of eight views (eight-channel display), the condition D = m (BE / 8A), where B is the period of the wavelength filter array 1, E the viewer distance, A is the average pupillary distance in the viewer 7, and m is a natural number. The period B corresponds to the distance by which the sequence of translucent and opaque filter elements is repeated, or the distance between the area centers of two light-permeable filter elements in a row. With the Subpixelperiode C, which corresponds to the distance of the area center points of two adjacent filter elements, the value can be for the period B at m = 1 according to the equation B = 8AC / (AC) charge. For E, is selected to calculate D, an initial value that is much larger than the upper limit of the desired th viewing space, so that a sufficiently large distance D is ensured. If one has thus calculated values for D, and C and A are known, it is possible by inserting different values of m in the equation E m = D (A-mC) / (mC) and the equation B m = 8AC / (a-mC) each viewing distances e m calculate and associated periods B m that can be realized then so as to be constant along a row in the filter array. 3 The natural number m must be greater than 1, and must not be an even multiple of 8 in the example. Each of these periods B m corresponds m to a viewing distance e, which is much closer to the image display device 1, when the original distance B. It must B m is not the period for all the lines the same, but a filter array 3 may comprise a plurality of periods, and the viewer 7 are several viewing levels. At a distance between wavelength filter array 3 and the image display device 1 of D = 1 2.33 mm - sufficient to provide a second illumination source 4 to accommodate - and an interpupillary distance of 65 mm are obtained with a Subpixelperiode of 0.1 mm in a depth range between 38.8 mm and 87.8 mm 1 1 viewing planes at which a viewer 7 can perceive an excellent three-dimensional image. The original distance E, which was calculated for m = l, however, is 8 m.

In a further development of the embodiment described so far, 2 and the second illumination source 4 is an optically active material between the first illumination source, preferably a filter plate arranged, whereby light of the first light source 2 with angles of incidence greater than the angle of total reflection of the second light source 4 is substantially not in the second illumination source 4 passes. This is illustrated schematically in Fig.l. 5 In practice, the filter plate here corresponds to the wavelength filter array 3, this few millimeters (for example, 1 mm) thick. Thus, the vignetting of the light beams is obtained in the aforementioned manner: light of the first illumination source 2 with angles of incidence greater than the angle of total reflection of the second light source 4 does not come into the second illumination source 4 is substantially, ie, the light guide. The order of the thickness of the filter plate or of the constituent wavelength filter array 3 corresponds approximately to the dimension of the light-permeable filter elements in the filter array. 3

As shown in Fig.l 5 is prevented by said vignetting that penetrate from the first illumination source 2 light beams with angles of incidence greater than the critical angle of total reflection of the second illumination source 4 in this. Is for the optical fiber used, which forms the second illumination source 4, the critical angle of total reflection, for example, 41 °, so the light rays by broken lines in Fig.l 5 shown 1 1 at angles of g '> 41 are "not in the optical fiber due to said vignetting . pulled drawn - - light beams 9, 1 0 certainly in the light guide an Specifically, the light beam would be for example 10 to impinge at an angle g in the light guide in or on which the image display device 1 facing major surface which is less than or equal to the critical angle penetrate contrast occurred. is the total internal reflection (here, for example 41 '). the advantage of preventing the penetration of light beams originating from the first light source 2 above the critical angle of total reflection in the light guide is, in particular, that disturbing reflections are avoided and thus the contrast in the second operating mode (2D) further verbe is ssert. It is an auto-contrast reduction.

Moreover, the Fig.l 6 and Fig.l show 7 schematically and not to scale further conceivable types of filter arrays, which in turn influencing the light extraction from the light guide (because of the opaque filter elements so disturbing particles are located) with influencing the specification of the light propagation directions essential to the function associated with the filter array structure. In the aforementioned examples according to Fig.l 6 and 7 Fig.l also the width of the gene regions at certain wavelengths translucent varied (here: transparent) filter elements or their number (if these are always approximately the same size) from line to line. While at the top and bottom of the resultant transparent filter areas are narrow, they take toward the center to form a common maximum. For the purposes of the operation of the described here arrangement, it is possible, among other things, to eliminate the need for providing a suitable luminance of the first light source 2, because the equalization of the originating from the first light source 2 and passing through the wavelength filter array 3 light beams with respect to their measurable luminance on the image display device 1 facing side of the wavelength filter array 3 by this situation the variation of the transparent filter sections is ensured substantially.

When using the filter array 3 according to Fig.l 6 and Fig.l 7 image combining structures are for the image display device 1 is advantageous in question to a next group of rows of pixels each have different periods of the Views embody from line to line or from a group of lines , Thus, for example, in a first line 8 horizontally adjacent picture elements representing image information of the views 1 -8 in this order, and then returns this period 1 to 8 always (up to the screen). The next row or the next group of (e.g. 5) lines could still be a separate period of image information of the views 1 to 9 between four periods of views 1 to 8, etc.

In addition to the shown wavelength filter array and image combinations, it is also possible to use combinations of images, which entire rows or columns in each case are driven with image information from a single view. The corresponding rows or columns are then covered with translucent filter elements. In this way, the brightness can be increased in the first mode.

It is important that due to the filter elements on the wavelength filter array 3 light propagation directions are always set for the image information shown there in such a way that for the observer, a spatial impression.

These embodiments just described have the special advantage that is made possible in 2D mode, a nearly homogeneous illumination of the image display device 1, the contrast goes to 0. They also allow the present invention the production of a tool-free 3D impression for the same number of viewers in 3D mode.

Fig.l 8a shows a schematic diagram of a second embodiment of an inventive arrangement, with an image reproduction device 1, a first illumination source 2, a wavelength filter array 3, a second illumination source 4 and a light outcoupling structure 13. The second illumination source 4 is provided as a plate-shaped light guide opposite with two large surfaces 12 designed. The light pipe is fed by a plurality of laterally arranged light sources. 5 The light outcoupling structure 13 may be mounted according to the invention on one of the major surfaces 8 or both, here it is mounted on the side remote from the viewer large area. 8

In Fig.l 8a reflectors 6 are still drawn yet, serve to better light utilization of light emitted from the light sources 5 Light. The connected and disconnected light outcoupling 1 3 is hereby preferably a switchable scattering layer. The same may, as in Fig. 1 8b from a applied to the configured as a plate-shaped light guide second illumination source 4 ITO layer 1 7 with the following liquid crystal layer 16, a further ITO layer 1 5 and a cap layer 1 4, for example a PET film, or a film made of optical plastic. It is in contrast, as shown in Fig. 1 8c also possible to insert a further substrate layer 18 made of optical plastic having a higher refractive index than that of the light guide. Optical plastics have no volume scattering and absorption in contrast to PET and are free of optical birefringence. In the described case, the sandwich of the components 14-1 8 a complete switchable lens, for example, can be laminated onto the light guide corresponds. As a switchable scattering or light outcoupling layer 1 3 a thin switchable scattering disc (preferably about 0.5 mm thick) "Polymer Dispersed Liquid Crystal (PDLC) film" type of the company Sniaricerche (Italy) are used. By virtue of this approach, the inventive arrangement can be easily realized by means of commercial components.

It is also advantageous if the opaque filter elements of the wavelength filter array 3 are springy -beispielsweise versehen- on the side facing the observer's side with a diffuse matt white paint. In this way, light which is at the filter array 3 side facing coupled, is diffusely scattered.

Fig.l 9 illustrates a schematic diagram for the first mode of the second embodiment of inventive arrangements. The designed as a switchable scattering layer light outcoupling 1 3 is switched to be transparent in the first mode. So that the resulting from the first illumination source 2 penetrates through at least a portion of the light transmissive filter elements of the filter array 3, and subsequently by an assigned part of the image elements of the image display device 1 through to the viewer, so that the scene or object for the viewer is perceived three-dimensionally. The generation of the spatial impression in the viewer is already WHERE quote in the above 01/56265 of the applicant and therefore needs no further explanation.

In contrast, there 20 is a schematic diagram for the second mode again. Here, the designed as a switchable scattering layer light outcoupling 1 3, at least part of the surface, preferably connected in full-surface scattering. The latter corresponds to the case that a two-dimensional perceptible image is displayed on the entire image area of ​​the image display device. 1 Due to the effect of the switchable scattering layer as a light outcoupling 1 3 in this mode, a largely homogeneous illumination of the image display device 1 for the two-dimensional representation can be achieved. Unlike in Figure 2 shows the light outcoupling designed as a switchable scattering layer can be 1 3 on which the image display device 1 - and thus also the viewer - facing major surface 1 2 of the second light source 4 is designed as a light guide 1 9, or even on both major surfaces 1 2 of the be arranged light guide 1. 9 In the former case, the homogeneity of the light density distribution is extremely good in the second mode, and the image brightness is a result of the feedback of the light into the light guide 19 is also better.

the first illumination source 2 is preferably turned on in the second operating mode in addition to the second light source 4 to obtain a contrast-free as possible (K = 0) illumination of the image reproducing device. 1 The light of the first light source 2 supplemented in principle with the light of the second illumination source 4 to a large extent with respect to the luminance homogeneous illumination light. This is shown in Fig. 20a schematically.

In Figure 21 a basic diagram for a particular embodiment of connectable and disconnectable light outcoupling 1 3 is shown, which shall ensure that the light output level from the designed as a light guide 1 9 second illumination source 4 per sufficiently large area unit at different locations of the light guide 1 9 is different in size. "1 3b" here is a schematic representation of the light outcoupling 1 3 designed as a switchable scattering layer is meant, wherein the darker areas against the brighter a stronger light extraction degrees have. In the second mode, this strip-shaped part surfaces 20 of the switchable scattering layer are switched springy, each two are next adjacent such strip-shaped part surfaces 20 by permanent transparent strip-shaped part surfaces 21 on the switchable scattering layer separated from each other so that the light output level from the light guide 1 9 per unit area at different points of the light guide varies in size 1. 9 here, it is thus by local variation the width and the local frequency of the strip-shaped part surfaces 20 of the switchable scattering layer and the respective local light output level is determined ( "geometric adaptation of the light-outcoupling grades" with the aim of Leuch tdichtehomogenisierung). This makes it possible in turn a total of a more homogeneous lighting to achieve by virtue of the second illumination source loading, such as when the light output level is less near the light-coupling side arranged light sources 5 and at some distance thereof.

The Figure 22 shows a schematic diagram of another particular embodiment of the connectable and disconnectable light outcoupling 1 3, which also contributes ensure that the light output level from the light guide 1 9 per unit area at different points or locations of the optical waveguide is different in size. "1 3c" here is a schematic representation of the switchable scattering layer is meant, wherein the darker areas against the brighter a stronger light extraction degrees have. Here, the switchable scattering layer is now connected to different extents diffuse in the second mode at different locations, so that the light output level of the light guide 1 9 at different points of the light guide 1 9 is different in size as well. in order to achieve different degrees of scattering locations at different locations of the switchable scattering layer are proposed to electrically preferably separated from one another strip-shaped part surfaces 20 of the scattering layer specified ibid pairwise different control voltages. the various control voltages can be transferred by means of various electrode pairs. of course a corresponding electrical control unit for simultaneously applying different voltages is provided which not drawing is shown. The different shadings or structures of the partial surfaces 20 correspond to different scattering intensities.

This latter "electrical adjustment of the light extraction degree" can be combined with the previously described geometric adaptation also to achieve a particularly homogeneous 2D lighting.

In Figure 23 a schematic diagram is shown for a third embodiment of inventive arrangements. Again, the second illumination source 4 is designed as a plate-like light conductor 1 9 with two large faces 1. 2 Between the light guide 1 9 and the image display device 1 is a switchable scattering disc 22 is arranged, which is transparent in the first mode and connected in at least part of the surface scattering in the second mode, so that the brightness contrast of the through-penetrating in the second mode by the switchable scattering disc 22 light decreases becomes. The latter reduction in contrast is the homogenization of the lighting in the second mode, that is in the mode to the two-dimensional representation. The light guide 1 9 used here may be a conventional, preferably such to be with a special light outcoupling. The latter light outcoupling structure is formed in a converted form off only to those surface portions of the light guide 1 to 9, which correspond to the opaque filter elements when projected in the direction of the surface normals of the large surfaces 1. 2

Also in this arrangement according to the invention can additionally lent to the second illumination source 4, the first illumination source 2 to be switched on in order to have more light is available in the second mode. Due to the scattering switched diffusion plate 22 has this additional light of the first light source 2 has no influence on the homogeneity of the serving for the illumination of the image display device 1 light.

Further, the 24 shows a schematic diagram of a fourth embodiment of inventive arrangements - shown here in the first operating mode - and Figure 25 is a schematic diagram of this fourth embodiment of inventive arrangements - shown here in the second mode.

It is again an arrangement for displaying images of a scene or object, but which has two in the viewing direction of a viewer 7 and the image display device 1 downstream planar wavelength filter array 23, 24th Both wavelength filter arrays each consist of a plurality of arranged in rows and / or columns filter elements. A part of these filter elements of the remaining portion is transparent to light in predetermined wavelength ranges, opaque. One of the two wavelength filter array 23, 24 is displaceable relative to the other, both are preferably in close contact to each other. Between the wavelength filter arrays 23, 24 and the image display device 1 is a switchable scattering disc 22, which is connected in the first mode and transparent in the second mode, at least part of the surface scattering.

In the embodiment shown in FIG. 24 first mode, the wavelength filter array 23 24 assume such a relative position to each other, a, that the light emitted from the arranged behind the wavelength filter array 23, 24 illumination source 2 light through at least part of the light transmissive filter elements of both wavelength filter arrays 23, 24 and subsequently passes through an associated portion of the image elements of the image display device 1 through to the viewer, so that the scene or object for the viewer is perceived three-dimensionally in the second shown in Fig 25 mode, the switchable scattering disc. 22 - at least part of the surface - connected scattering and take the wavelength filter array 23,24 such a relative position to each other one, that opposite the first mode more light scattering connected through the light-permeable filter elements of both wavelength filter arrays 23, 24 and subsequently through the in the second mode Lens 22 and the pixels of the image display device 1 passes through it to the viewer, so that the scene or object for the viewer is two-dimensional perceptible.

The one designated as "sufficient" distance of the switchable diffuser 22 to the wavelength filter array 23, 24 is usually a few millimeters. By "sufficient" is meant that the lens 22 is far enough away from the wavelength filter array 23, 24 to their (mostly ) visible structure to scatter so strongly that this Visu eil can not be resolved.

24 may also be more than two wavelength filter array 23, with a (total) number W be provided, of which at least Wl wavelength filter arrays are each displaceable.

Preferably, the displacement of each movable wavelength filter arrays 23, 24 are provided in the row direction of the grid of image elements of the image reproducing device. 1

More preferably, the intended displacement of each movable wavelength filter array 23, 24 is smaller than the horizontal period of the located on the respective wavelength filter array 23, 24 light-transmitting filter elements insofar as such a period is present. This fact has been taken into account in the Fig.24 and Fig.25, that there the displacement of the lower filter array 24 by approximately three-eighths of said period is provided.

The displacement of each movable wavelength filter array is ensured by a mechanical actuator such as a piezoelectric actuator, which is not graphically illustrated.

Figure 26 shows partial and not to scale, the exemplary structure of the wavelength filter array 23, 24 for use in the in question embodiment of inventive arrangements. There are two filter arrays 23, 24 is provided by just that shown structure. For example, the dimensions are chosen as follows: Each filter array 23, 24 is a total of approximately 310 mm wide and 235 mm high. Each line of a filter array 23, 24 is about 0.30086 mm. A transparent and an opaque portion of each line is about 0.401 14 mm wide. The offset of transparent or opaque portions of a line to the transparent or opaque portions of an adjacent line is 0.066857 mm. Such a filter array, for example, very suitable to be used in conjunction with a 1-5.1 "LCD type LG.

In Fig.27, the cumulative effects of two similar filter array 23, 24 to see to Figure 26 in a possible relative position to each other for use in the first mode. Here, the filter array 23, horizontally displaced from each other by approximately 0.30086 mm 24th As described above, in this mode, the switchable scattering disc is switched transparently. For image reproduction on the image display device 1, an appropriate image combination structure, for example is that of Fig. 53 from DE 20121318 U in question.

For the second mode, for example, the two filter arrays 23, 24 environment without Relatiwerschie- be located each other, ie they retain summarily about their original appearance after Fig.26 in. The diffusion plate 22 is now connected springy, whereby a homogeneous illumination of the image display device is achieved. 1

The filter elements of the wavelength filter array 3 have in most of the cases described hereinbefore, a non-negligible spatial extent in depth along the direction of view of the observer. If the opaque filter elements complete - that is on both the viewers 7 facing side as well as on the side faces which are oriented along the direction of view of the viewer 7 - scattering with a diffuse white light material is having a very low absorption coefficient, this leads to a direct, automatic contrast reduction in the first mode. The light is incident at an unfavorable angle to the diffusing side surfaces, so it arrives in this material layer, where it leads to a lightening. Therefore, it is desirable to design the material layer as thin as possible and / or reflexive-opaque edges.

With the example shown in Fig. 28 wavelength filter array, this contrast reduction can be avoided. a wavelength filter array 25 shown with translucent filter elements 26 and opaque filter elements 27 on a substrate 30 - is there - greatly enlarged and not to scale compared to the other components. The opaque filter elements 27 are covered on their side facing the viewer with the diffusely scattering material. The side surfaces are here covered with reflective material, so that a light beam 28 can no longer penetrate into the filter elements 27th Therefore, the reflected light results in both the first and the second mode of operation to a higher brightness of the image. The light beam 29 is totally reflected within a substrate is selected for this substrate of the wavelength filter array 25 is preferably an optical material having a low volume absorption.

Another way to reduce the contrast is shown in Fig. 29. Here made of a piece wavelength filter array 31 is shown, in which the obliquely incident light beams 28 are reflected from the first illumination source 2 by total reflection at the side surfaces and then analogously the wavelength filter array 31 at the top, where its angle of incidence is smaller at the interface with air than the critical angle of total internal reflection, leave. In this example, also the use of a brightness enhancement layer 32 is provided for further contrast reduction, for example, a brightness enhancement film from 3M, by means of which the luminance of the first light source is made as influenced so that in a certain angular range in the direction of the viewer it significantly larger than the side is gone, which is symbolized in Fig. 29 by the different length of the arrows.

In Fig. 30 a further possibility, the contrast reduction is illustrated. Here, a switchable, electrophoretic wavelength filter array 33 is shown, 34 have two corresponding modes operating states in which lichtun- permeable filter elements. In the first mode for the three-dimensional perception, the filter elements from the direction of the viewer appear light absorbing seen in the second mode, however, they reflect - for example from the second illumination source 4 originating - light, also from the direction of the viewer seen. These two modes can be implemented by itself in the design of the filter elements 34, the principle of electrophoresis, that takes advantage, which has long been known, but has been used only when printing on paper, the migration of colloidal charged particles in an electric DC field. In Fig. 30, the three filter elements 34 are illustrated on the left side in the first mode, the three filter elements 34 on the right side are shown in the second mode. A filter element 34 includes in an optically transparent liquid two types of particles of different polarity, for example, black positively charged particles 35 and white, then negatively charged particles 36. The particles must thereby be selected so that they have a sufficient optical density (in their entirety absorbency ) in the case of black particles, and a high diffuse reflectance, ie, degree of scattering, have in the case of white particles. Also shown is they have to keep their electrical charge permanently, but they must not all be the same, so as the sake of clarity. The filter elements 34 are indeed shown cuboid in Fig. 30, but they can be the shape of another polygon having semi-spherical or spherical shape.

one creates transparent electrodes on the viewer side facing away from the filter elements 34 at a negative voltage and to the viewer-facing on the side of a positive voltage, the opaque filter elements 34 are connected for the first mode. If the voltage returns to, so they are switched to the second mode. The particles 35, 36 migrate in accordance with their state of charge to the electrodes. The switching between first and second mode allows you to choose very short and smaller than the frame periods in modern LCD screens, which are currently about 16 ms.

Three light beams 37, 38, 39 symbolize the optical conditions. Light beam 38 advances in both operating modes freely through the light-transmitting filter elements. Beam of light 37 is absorbed in the first mode (3D), there occurs no direct contrast reduction on. In the second mode, however, the light beam 37 passes through the diffusing layer, and is divided by multiple scattering in numerous light rays that contribute to increase the image brightness in the 2D mode. Also for the light beam 39 results in different conditions. In the second mode, it is absorbed, in the first mode, it is split at the diffusely scattering layer into a plurality of light beams 34 then leave the filter element in different directions, and contribute to increasing the brightness of the 3D image. One way to dispense entirely with the second illumination source 4 is shown in Fig. 31. In this embodiment, a full turn-off wavelength filter array 40 is provided which is applied here on a transparent filter substrate 41st The wavelength filter array 40 also works by utilizing the electrophoresis. Inside are in a transparent liquid layer black particles 35, which are negatively charged in the example, can be just as good but also positively charged. In the illustrated first mode, the particles are fixed 35 in the vicinity of a positive electrode 42, which is located here at the side facing the observer, but may be just on the other side. The negative electrode is not shown. Right and left is the filter array 40 slightly remaining on the components above, are located in these sections, the so-called collection areas de- the black particles nen in the second mode, collecting the 2D mode, because in this mode the filter array is completely transparent.

To switch the wavelength filter array of the first to the second operating mode can first those electrodes 42 which are closest to the center, are switched off. At the same time, the voltage is in the outwardly to these adjacent electrodes 42 increases, and by the amount which corresponds approximately to the voltage across the now off-electrode 42 in the on state, that is at least about the number of charges of the original to the switched electrode 42 fixed charge. The black particles 35 then migrate to the electrode 42 to which the voltage was increased. This process is then continued until all of the particles in the collection regions are the nearest electrodes 42nd Then, only a positive voltage is applied to the collection regions, at the same time the voltage at the electrodes 42, which now are the black particles 35 is set to zero, so that all the particles move 35 into the collection areas where they become electrostatically fixed. The switch from the second to the first operating mode is carried out analogously. Under certain circumstances it may be necessary to use alternating fields to change the polarity of the electrodes for a short time.

Since the wavelength of a filter array can be dispensed with entirely viewed by the observer upstream second illumination source 4 and the light guide, no contrast reduction takes place, the image quality in both modes is high.

Instead, the electrophoretic migration of charged particles exploit, can be of such a wavelength filter array also another effect harness leading to so-called suspended particle devices. Here, the light absorbent are colloidal particles with induced dipole moment in the electric field used. In the field-the dipole moments of these particles are all oriented randomly, and a collection of such particles is opaque. When creating an alternating electric field the dipole moments line up the particle accumulation is transparent. In this way, to dispense with the aforementioned collection container.

The principle of electrophoresis can also be applied to reduce the contrast by the activated 3D lighting in the case of 2D display. Such an embodiment is shown in Fig. 32. Between wavelength filter array 3 and the second illumination source 4 is a scattering as electrophoretic component configured optically here, the light preferably white diffusely reflecting or remitting film 43 provided, the scattering effect is due to the accumulation of white particles 36, which in the second mode as widely as possible over the film are spread and so the one of the second illumination source 4 outgoing light diffusely reflective scatter and the other originating from the first light source 2 scatter light diffusely. In order to switch to the first mode, the procedure is equivalent as described previously in the description of Fig. 31. In a simplified embodiment, the film can also be mechanical, that is to say be introduced by hand or by a motor in the device to switch to the second mode, or be removed from it to switch to the first mode. One such example is shown in Fig. 33. Left and right of the arrangement is an up and unwinding mechanism 45 which can be operated either by hand or by motor, a control means of a program is possible. An optically scattering sheet 44 can then in the 3D mode, for example in the form of a roll up or to the side of the screen to be rolled up, from where they in the 2D mode by a narrow, light and dust-tight gap along lateral guides between the wavelength filter array 3 and the second illumination source is unrolled. 4

It may also be advantageous if predominantly in any of the so far described embodiments of the inventive arrangements in the respective first operating mode for at least in part sheet-like three-dimensional representation of each observer eye, but not exclusively, provides a particular selection from the displayed image information of a plurality of perspective views of the scene or object whereby a spatial impression is created for the viewer. Examples for generating a spatial impression on this premise are, for example described in the already cited DE 201 21 31 U 8 and in the WO 01/56265 and WO 03/0241 22 of the applicant.

Of course, should be in the respective second operating mode, only a two-dimensional image - and not a composite of a plurality of views of image - are displayed, which is easily allows a suitable control of the image reproducing device.

In an equivalent variant of the teachings herein a respectively existing filter array can sometimes be replaced using holographic-optical elements through a barrier screen, a lenticular screen or other optical components.

It should be expressly pointed out that the methods disclosed in this application features can be combined in other, not explicitly shown here variations each other by a specialist. Such variations are included within the scope of this application.

Claims

claims
1 . Arrangement for the display of images of a scene or an object, with an image reproduction device (1) from a plurality of light-transmitting, arranged in a grid of rows and / or columns picture elements on which Bild.informationen of a plurality of perspective views of the scene or object can be displayed , - with an in sight of an observer (7) of the picture display device (1) downstream, planar wavelength filter array (3) consisting of a plurality of arranged in rows and / or columns filter elements, a portion of which is transparent to light in predetermined wavelength ranges, and the remaining portion is opaque, - with at least two operating modes comprising, addressable lighting device, wherein arranged in a first mode from a behind the wavelength filter array (3) the first illumination source (2) light through at least part of the light transmissive filter elements and na chfolgend by an associated part of the image elements of the image reproduction device to pass to the viewer (7) passes, so that the scene or object for the viewer (7) is perceived three-dimensionally, characterized in that in a second mode by a second illumination source (4), the minde- least an intermediate wavelength filter array (3) and image reproducing means (1) arranged for wavelength filter array (3) has substantially parallel radiation plane, of light from this emission plane or these Abstrahlebenen by the image elements of the image reproduction device (1), but not by reached overall filter elements of the wavelength filter array (3) through to the viewer (7), so that the scene or object for the viewer (7) is two-dimensionally perceived at least partially, said means for uniform lighting are provided in the second mode.
2. Arrangement according to claim 1, characterized in that - as a second illumination source (4) as a plate-shaped light guide (1 9) formed flat illumination source is provided, wherein the light guide (1 9) with two opposing major faces (1 2) and circumferential narrow surfaces formed and that of the Bildwiedergabeeinrich- device (1) facing away from or facing major surface (1 2) of the radiation plane corresponding or both major surfaces (2: 1) corresponding to the Abstrahlebenen, and the light guide (1 9) of one or more laterally arranged light sources (5) is fed, - the light is coupled through one or more of the narrow surfaces of the light guide (1 9), there partially by total reflection at the major surfaces (2: 1) is moved back and herreflektiert and partly in the corresponding one of the radiation plane large face (1 2 ) or the corresponding Abstrahlebenen the large faces (1 2) is coupled out.
3. Arrangement according to claim 1 or 2, characterized in that in the second mode in addition to the second illumination source (4), the first illumination source (2) is switched on, as a radiation plane, only the image reproducing device facing away from large-area (1 2) is provided, and are for the uniform illumination of loading only such regions in the radiation plane provided for the light emission, which are essentially congruent with the projection along the plane normal to the wavelength filter array (3) with the space occupied by the opaque areas of filter elements.
4. An arrangement according to claim 3, characterized in that the wavelength filter array (3) is applied to the corresponding one of the radiation plane large face (1 2).
5. An arrangement according to claim 3 or 4, characterized in that the radiation plane of the corresponding large-area (1 2) in the surfaces provided for radiating Berei- with a total reflection interfering structure is preferably provided of particles.
6. An arrangement according to claim 5, characterized in that the interference capacity of the particles is inhomogeneous over the extension of the radiation plane of time between two limit values, the limit values ​​are dependent on the particle density in the coating.
7. An arrangement according to claim 6, characterized in that the interference capacity of the particles taken in each of the coated areas in itself is substantially constant.
8. An arrangement according to claim 6 or 7, characterized in that two opposing narrow faces are provided in parallel for light coupling, and oriented the interference capacity of the coated areas with growing distances x] f x 2 in parallel to the narrow faces, the strip-shaped surface portions progressively up is increasingly formed into a common maximum.
9. An arrangement according to claim 5, characterized in that the interference capacity of the particles, both in each of the regions as well as on the extension of
Radiation plane is away substantially homogeneous.
10. An arrangement according to claim 9, characterized in that two mutually opposing in the vertical direction narrow surfaces are provided for coupling light, and in selected areas of the wavelength filter array (3) each comprise one or more rows and / or columns that do not overlap each other and in completely cover their entirety, the wavelength filter array (3), the ratio of the area contents of the area occupied by the translucent in predetermined wavelength ranges filter elements surface regions is set to the space occupied by lichtundurch- permeable filter elements surface areas respectively depending on the maximum achievable luminance in those surface sections in the radiation plane of the flat illumination source each corresponding to a so-selected region of the wavelength filter array in projection along the surface normal.
1. 1 Arrangement according to one of claims 5 to 10, characterized in that the total reflection interference coating is applied further, the light absorbing substantially covering layer.
1 2. An arrangement according to one of the preceding claims, characterized in that the lighting device with a control for the first illumination source (2) for generating a luminance gradient is provided with respect to the plane of the wavelength filter array (3).
1 3. An arrangement according to one of the preceding claims, characterized in that the first source of illumination in the illumination device (2) is a discharge lamp with a plan, for the wavelength filter array (3) parallel cover glass on the wavelength filter array (3) facing side is provided, and the inside of the cover glass a coating of phosphor is applied.
14. An arrangement according to claim 1 3, characterized in that the coating with phosphor only in areas which are congruent in projection along the plane normal to the wavelength filter array (3) substantially coincides with the space occupied by light-transmissive in vorgege- surrounded wavelength ranges filter elements fields applied, is.
1 5. Arrangement according to claim 1 3 or 1 4, characterized in that the wavelength filter array (3) is applied to the outer side of the cover glass.
16. An arrangement according to any one of the preceding claims, characterized in that coupled by means of optical elements in the second mode, a part of the light of the first light source (2) and in the second illumination source (4) How-that is coupled, said part by the ratio of the area occupied by the translucent in predetermined wavelength ranges filter elements surface regions is set to the space occupied by opaque filter elements surface regions in the wavelength filter array.
1 7. An arrangement according to claim 1 6, characterized in that for removal and development Einkopp- light guides and / or reflective elements are provided.
1 8. An arrangement according to one of the preceding claims, characterized in that between the first and second illumination source (2, 4), an optically active Materi- al, preferably a filter plate or a thin film with prismatic acting micro krostruktur is arranged, whereby light the first illumination source (2) having angles of incidence greater than the angle of total reflection of the second illumination source (4) is substantially not in the second illumination source (4) passes.
1 9. An arrangement according to claim 1, characterized in that a plurality of individually controllable as a second illumination source (4) radiating in the direction of the image display device of light sources are provided which are formed at the same time as the opaque filter elements in the wavelength filter array (3).
20. The arrangement according to claim 1 9, characterized in that there are provided as light sources emitting substantially flat polymer layers.
21st elements arrangement for displaying images of a scene or an object with an image reproduction device (1) from a plurality of translucent images, on which image information of a plurality of perspective views of the scene or object can be displayed, with one (in the viewing direction of a viewer of the image display device 1 ) downstream array, which arranged a plurality of reasonable in rows and / or columns addressable and individually contains provided in predetermined wavelength ranges of light emission lighting sources, light is emitted in a first mode only for such an illumination sources from which light by an illumination source respectively assigned part of the image elements of the image reproduction device (1) passes through to the viewer, so that the image reproduction is performed three-dimensionally, and in a second mode of addition, at least another part of the illumination light sources e mittiert is, without any particular assignment by picture elements of the image reproducing device of the light (1) reaches through overall to the viewer, so that the image is at least partially reproduced two-dimensionally.
22. The arrangement according to claim 21, characterized in that there are provided as illumination sources substantially flat, light-emitting polymer layers.
23. The arrangement according to claim 21, characterized in that there is provided as the illumination sources, a Liquid-Crystal Display.
24. The arrangement according to claim 2, characterized in that is mounted as a means for uniform illumination in the second mode at least one of the large faces (1 2) is a connectable and disconnectable light outcoupling (1 3).
25. An arrangement according to claim 24, characterized in that the connectable and disconnectable light outcoupling (1 3) is a switchable scattering layer.
26. An arrangement according to claim 25, characterized in that the switchable scattering layer is transparent and scattering connected in the second mode in the first mode.
27. An arrangement according to claim 26, characterized in that in the second loading triebsart only partial surfaces (20) of the switchable scattering layer are connected scattering.
28. An arrangement according to claim 27, characterized in that the partial surfaces (20) are strip-shaped.
29. An arrangement according to claim 28, characterized in that the strip-shaped part surfaces (20) have different widths.
30. An arrangement according to claim 29, characterized in that each two next adjacent springy connected partial surfaces (20) by permanently transparent strip-shaped part surfaces (21) are separated from each other so that the light output level from the light guide (9: 1) per unit area at different locations of the light guide (1 9) is different in size.
31st Arrangement according to one of claims 24 to 30, characterized in that the switchable scattering layer is connected in the second mode at different locations to different degrees springy, so that the light output level from. the light guide (9: 1) at different points of the light guide (1 9) is different in size.
32. Arrangement according to claim 31, characterized in that, to achieve different degrees of scattering sites at various locations of the switchable scattering layer pairs, various control signals are applied.
33. An arrangement according to one of claims 24 to 32, characterized in that the opaque filter elements of the wavelength filter array (3) on the side facing the observer's side are diffuse scattering.
34. An arrangement according to any one of claims 24 to 33, characterized in that the light guide (9: 1) plane and / or textured surfaces on the major surfaces (1 2).
35. An arrangement according to one of claims 24 to 34, characterized in that the switchable scattering layer, a liquid crystal scattering layer - for example, one having cholesteric-nematic transition - is the light scattering effect at a suitable applied electric voltage transparent and in the absence of voltage.
36. An arrangement according to claim 2, characterized in that (1 9) and the image reproduction device (1) comprises a switchable scattering disc (22) is arranged as a means for uniform illumination in the second mode between the light guide, the transparent in the first mode and in the second mode is switched to at least part of the surface scattering so that the contrast of the brightness in the second mode by the switchable scattering disc (22) is reduced through-penetrating light.
37. An arrangement according to one of claims 24 to 36, characterized in that 4> the first illumination source (2) is switched on in the second mode, addition (the second illumination source.
38. An arrangement for displaying images of a scene or an object with an image reproduction device (1) from a plurality of light-transmitting, arranged in a grid of rows and / or columns pixels on which image information of a plurality of perspective views of the scene or of the counter prior can be represented with at least two in the viewing direction of an observer (7) of the picture display device (1) downstream, planar wavelength filter array (23, 24), each consisting of a plurality of arranged in rows and / or columns filter elements, of which a part at predetermined is transparent to light wavelength ranges, and the remaining portion is opaque, one of said wavelength filter array (23 or 24) relative to the other (24 or 23) is displaceable, and both are preferably in close contact with one another, with one (in the viewing direction behind the wavelength filter array 23 Beleuchtungsquel situated, 24) le (2), which is preferably a flat illumination source, - a between the image reproducing means (1) and the wavelength filter array (23, 24) in a sufficient distance from the latter arranged switchable scattering disc (22), the second and the transparent in the first mode mode is switched at least part of the surface scattering, wherein in a first mode, the wavelength filter array (23, 24) each occupy such a relative position, that the from the behind the Wellenlängenfil-: arranged terarrays (23, 24) illumination source (2) light emitted by at least one part of the light transmissive filter elements of both wavelength filter array (23, 24) and subsequently by an assigned part of the image elements of the image reproduction device (1) through to the viewer (7) passes, so that the scene or object for the viewer (7) is perceived three-dimensionally, and wherein the switchable in a second mode Lens (22) is switched at least part of the surface scattering and the wavelength filter array (23, 24) occupy each other such a relative position, that relative to the first mode of operation more light through the light-permeable filter elements of both wavelength filter array (23, 24) and subsequently diffuse through the second in Mode connected lens (22) and the picture elements of the Bildwiedergabeeiririchtung (1) through to the viewer (7) passes, so that the scene or object for the viewer (7) is two-dimensional perceptible.
39. An arrangement according to claim 38, characterized in that more than two wavelength filter array are provided with a number W of which at least Wl wavelength filter array can be moved.
40. An arrangement according to any one of claims 38 or 39, characterized in that the displacement of each movable wavelength filter array (23, 24) is provided in the line direction of the grid of image elements of the image reproducing device.
41st Arrangement according to claim 40, characterized in that the intended displacement of each movable wavelength filter array (23, 24) is smaller than the horizontal period of the on the respective wavelength filter array (23, 24) located light permeable filter elements, if such a period is present.
Is provided 42. An arrangement according to one of claims 38 to 41, characterized in that for displacement of each movable wavelength filter array (23, 24) is a chanisches electromechanical actuator, such as a piezo actuator.
43. An arrangement according to claim 2, characterized in that (3) and light guide (9: 1) an optically scattering sheet (44) is provided as means for gleichmä- lar illumination in the second mode between the wavelength filter array.
44. An arrangement according to claim 43, characterized in that the film (44) between the wavelength filter (3) and light guide (9: 1) removed for switching to the first mode, preferably by an up and unwinding mechanism (45).
45. Arrangement according to claim 43, characterized in that the film as an electrophoretic element (43) is arranged which is optically scattering and translucent in the first mode to the second mode, wherein the switchover between the second and first operating mode by influencing the electrophoretic-Nazi characteristics is done.
46. ​​An arrangement according to any one of claims 24 to 37 or 43 to 45, characterized in that the wavelength filter array (3) staltet designed as electrophoretic component and is provided with a drive, wherein seen the opaque filter elements from the direction of the viewer (7) are connected in light-reflecting light-absorbent, and in the second mode in the first mode.
47. An arrangement for displaying images of a scene or object - with an image reproduction device (1) from a plurality of light-transmitting, arranged in a grid of rows and / or columns pixels on which image information of a plurality of perspective views of the scene or object representable are, with one in the viewing direction of an observer (7) of the picture display device (1) downstream, planar, controllable wavelength filter array (3) consisting of a plurality of arranged in rows and / or columns filter elements, a portion of which is transparent to light in predetermined wavelength ranges , - arranged with an in viewing direction behind the wavelength filter array (3) illumination source (2), which is preferably a flat illumination source, wherein in a first mode the remaining portion of the filter elements is opaque driven and from the illumination source light through at least part d he light-transmissive filter elements and subsequently through a zugeordne- th part of the picture elements of the picture display device (1) through to the viewer
(7) passes, so that the scene or object for the viewer (7) is perceived three-dimensionally, characterized in that the wavelength filter array (3) is designed as an electrophoretic element (40) and transparent in a second mode the remaining portion of the filter elements is driven so that the scene or object for the viewer (7) is two-dimensional perceptible.
48. An arrangement according to one of the preceding claims, characterized in that predominantly in the respective first operating mode for at least partially three-dimensional representation of each observer eye, but not exclusively, provides a particular selection from the displayed image information of a plurality of perspective views of the scene or object, whereby the viewer a spatial impression is generated.
EP03799495A 2002-12-20 2003-12-19 Arrangement for two-dimensional or three-dimensional representation Withdrawn EP1574078A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10261657 2002-12-20
DE10261657A DE10261657A1 (en) 2002-12-20 2002-12-20 Arrangement for 2D or 3D representation has second mode in which light from radiation plane between filter array and image reproduction device passes through reproduction device but not filter array
DE10317614A DE10317614A1 (en) 2003-04-11 2003-04-11 Image representation arrangement selectively providing 2-dimensional or 3-dimensional image of scene or object
DE10317614 2003-04-11
PCT/EP2003/014605 WO2004057878A2 (en) 2002-12-20 2003-12-19 Arrangement for two-dimensional or three-dimensional representation

Publications (1)

Publication Number Publication Date
EP1574078A2 true EP1574078A2 (en) 2005-09-14

Family

ID=32683494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03799495A Withdrawn EP1574078A2 (en) 2002-12-20 2003-12-19 Arrangement for two-dimensional or three-dimensional representation

Country Status (6)

Country Link
US (1) US20060056791A1 (en)
EP (1) EP1574078A2 (en)
JP (1) JP2006511844A (en)
CN (1) CN102143373B (en)
AU (1) AU2003300219A1 (en)
WO (1) WO2004057878A2 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100580632B1 (en) * 2003-12-05 2006-05-16 삼성전자주식회사 Display capable of displaying 2D 3D image selectively
DE102004044802A1 (en) * 2004-09-13 2006-03-30 X3D Technologies Gmbh Arrangement for optionally three-dimensionally perceptible or two-dimensional representation of images
GB2418315A (en) * 2004-09-21 2006-03-22 Sharp Kk Multiple view display
JP4778261B2 (en) * 2005-04-26 2011-09-21 Nec液晶テクノロジー株式会社 Display device and terminal device
TWI446004B (en) * 2005-06-14 2014-07-21 Koninkl Philips Electronics Nv Combined single/multiple view-display
DE102006056150A1 (en) * 2006-11-28 2008-05-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electromagnetic rays radiating device for use in display device, has radiation uncoupling surface arranged in ray path of radiation-emitting arrangement, and radiation-steering unit directing electromagnetic ray to uncoupling surface
DE102006060409A1 (en) * 2006-12-20 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Light guide and method for producing a light guide
CN102077601B (en) * 2008-06-27 2013-05-22 皇家飞利浦电子股份有限公司 Autostereoscopic display device
TWI419124B (en) * 2009-03-06 2013-12-11 Au Optronics Corp 2d/3d image displaying apparatus
KR101043949B1 (en) * 2009-04-17 2011-06-24 전자부품연구원 Backlight unit and display device using the same
JP5045826B2 (en) * 2010-03-31 2012-10-10 ソニー株式会社 Light source device and stereoscopic display device
JP5545068B2 (en) * 2010-06-25 2014-07-09 ソニー株式会社 Light source device and stereoscopic display device
US9036869B2 (en) 2010-08-31 2015-05-19 Zeta Instruments, Inc. Multi-surface optical 3D microscope
JP4930631B2 (en) * 2010-09-27 2012-05-16 ソニー株式会社 3D display device
TWI516090B (en) * 2010-12-31 2016-01-01 瀚宇彩晶股份有限公司 Display device
JP5674023B2 (en) 2011-01-27 2015-02-18 ソニー株式会社 Light source device and display device
JP4973794B1 (en) 2011-04-06 2012-07-11 ソニー株式会社 Display device
JP2012252249A (en) * 2011-06-06 2012-12-20 Sony Corp Light source device and display
JP2013083904A (en) * 2011-09-28 2013-05-09 Sony Corp Light source device, display device and electronic apparatus
JP2013076725A (en) * 2011-09-29 2013-04-25 Sony Corp Light source device, display apparatus and electronic equipment
JP2013104916A (en) * 2011-11-10 2013-05-30 Sony Corp Display apparatus and electronic device
JP2013104915A (en) * 2011-11-10 2013-05-30 Sony Corp Light source device, display device, and electronic apparatus
US9022564B2 (en) * 2011-12-21 2015-05-05 Panasonic Intellectual Property Corporation Of America Display apparatus
CN103978788B (en) * 2014-05-22 2015-12-30 京东方科技集团股份有限公司 Grating printing device and preparing grating method
CN104696887B (en) * 2015-03-26 2018-06-15 合肥鑫晟光电科技有限公司 A kind of light guide plate, backlight module, display device and display control program

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US545754A (en) * 1895-09-03 Edward wishart
US4717949A (en) * 1986-03-07 1988-01-05 Dimension Technologies, Inc. Autostereoscopic display with illuminating lines and light valve
EP0544332B1 (en) * 1991-11-28 1997-01-29 Enplas Corporation Surface light source device
US5457574A (en) 1993-05-06 1995-10-10 Dimension Technologies Inc. Autostereoscopic display with high power efficiency
US5897184A (en) * 1996-07-02 1999-04-27 Dimension Technologies, Inc. Reduced-thickness backlighter for autostereoscopic display and display using the backlighter
US6157424A (en) 1998-03-30 2000-12-05 Dimension Technologies, Inc. 2D/3D imaging display
JP2000098299A (en) 1998-09-18 2000-04-07 Sanyo Electric Co Ltd Stereoscopic video display device
DE50109951D1 (en) * 2000-01-25 2006-07-06 Newsight Gmbh Process and arrangement for spatial presentation
DE10053867B4 (en) * 2000-03-15 2006-01-12 X3D Technologies Gmbh Lighting device
DE10015796A1 (en) * 2000-03-28 2001-10-11 4D Vision Gmbh Illumination device for auto-stereoscopic display, has controllable birefringent material between filter array and mask
DE10241475A1 (en) * 2002-09-03 2004-03-11 4D-Vision Gmbh simulation methods
DE10309194B4 (en) * 2003-02-26 2008-10-09 Newsight Gmbh Method and arrangement for spatial representation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004057878A2 *

Also Published As

Publication number Publication date
CN102143373B (en) 2013-01-30
AU2003300219A1 (en) 2004-07-14
US20060056791A1 (en) 2006-03-16
JP2006511844A (en) 2006-04-06
WO2004057878A2 (en) 2004-07-08
WO2004057878A3 (en) 2004-12-23
CN102143373A (en) 2011-08-03

Similar Documents

Publication Publication Date Title
KR100663220B1 (en) Multiple View Display
US7528893B2 (en) Backlight for liquid crystal display
US7580186B2 (en) Multiple-view directional display
EP1680702B1 (en) Multi-view display
US7697080B2 (en) Manufacturing method for display device having thickness of first substrate reduced by second supporting substrate and then adhering third substrate with parallax optic to thinned first substrate
US6721023B1 (en) Multi-layered, three-dimensional display
KR101128519B1 (en) High resolution autostereoscopic display
JP5474731B2 (en) Multi view display
TWI446004B (en) Combined single/multiple view-display
JP2005533275A (en) Improved multi-layer video screen
KR101897276B1 (en) Light source device and stereoscopic display
US20050206582A1 (en) Depth fused display
EP1308768A1 (en) Stereoscopic display with beam combiner
TWI294540B (en)
US8289458B2 (en) Display
JP4471785B2 (en) Multiple view directional display
JP4679147B2 (en) Display system for displaying images in a vehicle
JP2010113332A (en) Stereoscopic display device
US9279989B2 (en) Backlight unit, 3D display having the same, and method of forming 3D image
KR100651099B1 (en) A multiple-view directional display
US20070013624A1 (en) Display
CN100386663C (en) Image display device and portable terminal device using the same
US20090091667A1 (en) Embedded stereoscopic 3d display and 2d display film stack
EP1252756B1 (en) Method and system for the three-dimensional representation
US8749722B2 (en) Display device displaying an image for a first viewpoint and an image for a second viewpoint

Legal Events

Date Code Title Description
AX Request for extension of the european patent to

Countries concerned: ALLTLVMK

17P Request for examination filed

Effective date: 20050204

AK Designated contracting states:

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DAX Request for extension of the european patent (to any country) deleted
17Q First examination report

Effective date: 20071126

R17C Date of despatch of first examination report

Effective date: 20071129

18D Deemed to be withdrawn

Effective date: 20100701