DE102007060461A1 - Arrangement for stereoscopic representation, has image reproduction device flexibly arranged with screen and optical element, where optical element is connected over flexible substrate with image reproduction device - Google Patents

Abstract

The arrangement has an image reproduction device flexibly arranged with a screen (1) and an optical element (2). The optical element is connected over a flexible substrate (4) with the image reproduction device. The optical element is a parallax barrier screen or lenticular screen.

Description

The Invention relates to the field of spatial representation, in particular, the spatially perceptible without aids Representation for several viewers simultaneously, the so-called autostereoscopic visualization.

For some time, there have been approaches to the aforementioned subject area. A pioneer in this field was Frederic Ives, who in Scripture GB190418672 A presented a system with a "line screen" for 3D presentation Sam H. Kaplan "Theory of parallax barriers", Journal of SMPTE Vol. 59, No. 7, pp. 11-21, July 1952 Basic insights into the use of barrier screens for 3D imaging are described.

For a long time, however, no comprehensive dissemination of autostereoscopic systems was achieved. Only in the 80s of the 20th century could a certain renaissance of the 3D systems be used due to the now available computing power and new display technologies. In the 1990s, the number of patent applications and publications on glasses-free 3D visualizations skyrocketed. Outstanding results have been achieved by the following inventors or providers:
In the JP 8-331605 AA describe Masutani Takeshi et al. (Sanyo) a step barrier in which a transparent barrier element has approximately the dimensions of a color subpixel (R, G or B). With this technique, it was possible for the first time to partially redirect the vertical resolution of the loss of resolution in the horizontal direction that occurs in most autostereoscopic systems due to the simultaneous display of several views (at least two, preferably more than two views).

Pierre Allio succeeded in teaching after the US 5,808,599 A . US 5,936,607 A and WO 00/10332 A1 a noteworthy evolution of lenticular technology, using a sub-pixel-based view layout as well.

Another outstanding result was presented by Cees van Berkel with the EP 791 847 A1 patent pending. Lenticular lenses inclined relative to the vertical are located above a display which also shows different perspective views. Characteristically n views are divided on at least two screen lines, so that in turn the loss of resolution from the horizontal is partially transferred to the vertical.

Jesse Eichenlaub founded several of the milestones for autostereoscopy with the writings US 6,157,424 A and WO 02/35277 A1 as well as several other inventions, however, which represent almost all 3D systems for only one viewer and / or are often not manufacturable at acceptable cost.

adversely all the systems mentioned above are always rigid, inflexible, So do not require flexible imagers.

Of the Invention is now the object of a possibility to create the autostereoscopic presentation which bending the imager at least temporarily allowed, without the arrangement to destroy.

• – ein Bildwiedergabegerät mit Bildelementen x(i, j) in einem Raster mit Zeilen i und Spalten j, auf welchen Bildteilinformationen verschiedener Ansichten A(k) mit k = 1, ..., n und n > 1 sichtbar gemacht werden können,
• – mindestens ein dem Raster mit Bildelementen x(i, j) im Abstand s vor- oder nachgeordnetes optisches Element, welches Lichtausbreitungsrichtungen für das von den Bildelementen x(i, j) transmittierte oder abgestrahlte Licht vorgibt,
• – so dass ein oder mehrere Betrachter auf Grund der Wirkung des optischen Elements jeweils mit beiden Augen im wesentlichen unterschiedliche Bildelemente x(i, j) und/oder Teile davon sieht bzw. sehen, wodurch beide Augen jeweils im Wesentlichen unterschiedliche Ansichten A(k) wahrnehmen und damit ein räumlicher Seheindruck entsteht,
• – wobei erfindungsgemäß das Bildwiedergabegerät mit dem Raster sowie das optische Element biegsam ausgestaltet sind,
• – und das optische Element über ein biegsames Substrat mit dem Bildwiedergabegerät verbunden ist.

This object is achieved by an arrangement for spatial representation, comprising

• A picture display device with picture elements x (i, j) in a grid with lines i and columns j, on which partial picture information of different views A (k) with k = 1,..., N and n> 1 can be made visible,
• At least one optical element preceding or behind the grid with picture elements x (i, j) at a distance s, which specifies light propagation directions for the light transmitted or emitted by the picture elements x (i, j),
• In such a way that one or more observers see or see essentially different picture elements x (i, j) and / or parts thereof with both eyes due to the effect of the optical element, whereby both eyes each have essentially different views A (k) perceive and create a spatial visual impression,
• - According to the invention the image display device with the grid and the optical element are designed to be flexible,
• - And the optical element is connected via a flexible substrate with the image display device.

at the optical element may be a parallax barrier screen or a lenticular screen.

The flexible substrate may preferably be a transparent silicone adhesive. Other embodiments are possible. It is important that, when the arrangement is bent, possible allocations of partial areas of the optical element to partial areas of the grid are substantially retained. This allows the spatial impression to a certain extent largely retained even if the arrangement is bent. Needless to say, however, the best viewing impression is present when the grid and the optical element are essentially in a flat state.

The Views A (k) may preferably have different perspective views a scene or an object. Other image content is still possible.

Furthermore The views A (k) can also change over time, ie. H. both spatial still and moving pictures are possible.

About that In addition, the assignment of the image part information of various Views A (k) to the pixels x (i, j) in a two-dimensional periodic pattern, with the period length in the horizontal and the vertical direction preferably not more than 32 each Picture elements x (i, j). Exceptions to this limitation are case-related possible.

Preferably the vertical period length is equal to the number of displayed ones Views, so z. B. equal to 5 or 9.

The Image elements x (i, j) correspond to color subpixels (R, G or B) or Clusters of color subpixels (eg RG or GB) or full color pixels or grayscale pixels.

at The image display device may, for example, at a (color) LCD screen, an OLED screen, an OEL screen or an LED-based screen, where in each case preferably flexible closure glasses are present. Further Embodiments are conceivable. Insofar as an LCD screen used Here, could be a special liquid crystal mixture are used, the flexible bending of the arrangement easily can tolerate.

insofar as an optical element a parallax barrier screen is present, this consists for example of a flexible glass substrate, on which the barrier structure applied on the back is. Same barrier structure can be an illuminated and developed be photographic film, the back on the pliable Glass substrate is laminated, wherein preferably the emulsion layer of the photographic film to the glass substrate.

Farther is it possible that - insofar as optical Element a parallax barrier screen is present - this consists of a photographic film, which on the flexible Substrate is applied. This allows a particularly simple manufacturing method. In addition, the flexible substrate itself can be more transparent Be adhesive.

Needless to say, the optical element must be suitably aligned with the grid, which is well known in the art.

moreover it is advantageous if the optical element means for reducing of flare reflections, preferably at least one interference-optical Antireflective coating, contains.

The Invention will be described below with reference to an embodiment be explained in more detail. The drawings show:

1 a schematic representation of the arrangement according to the invention,

2 a schematic representation of a bent state of an inventive arrangement, and

3 an exemplary combination of the different views A (k) on a grid of image display elements x (i, j).

• – ein Bildwiedergabegerät mit Bildelementen x(i, j) in einem Raster 1 mit Zeilen i und Spalten j, auf welchen Bildteilinformationen verschiedener Ansichten A(k) mit k = 1, ..., n und n > 1 sichtbar gemacht werden können,
• – mindestens ein dem Raster 1 mit Bildelementen x(i, j) im Abstand s vorgeordnetes optisches Element 2, welches Lichtausbreitungsrichtungen für das von den Bildelementen x(i, j) transmittierte oder abgestrahlte Licht vorgibt,
• – so dass ein oder mehrere Betrachter 3 auf Grund der Wirkung des optischen Elements 2 jeweils mit beiden Augen im wesentlichen unterschiedliche Bildelemente x(i, j) und/oder Teile davon sieht bzw. sehen, wodurch beide Augen jeweils im Wesentlichen unterschiedliche Ansichten A(k) wahrnehmen und damit ein räumlicher Seheindruck entsteht,
• – wobei erfindungsgemäß das Bildwiedergabegerät mit dem Raster 1 sowie das optische Element 2 biegsam ausgestaltet sind,
• – und das optische Element 2 über ein biegsames Substrat 4 mit dem Bildwiedergabegerät verbunden ist.

In 1 So is a schematic representation of the arrangement according to the invention for spatial representation to see. This arrangement according to the invention comprises

• - An image display device with pixels x (i, j) in a grid 1 with rows i and columns j, on which partial image information of different views A (k) with k = 1, ..., n and n> 1 can be made visible,
• - At least one grid 1 with picture elements x (i, j) at a distance s upstream optical element 2 which specifies light propagation directions for the light transmitted or emitted by the picture elements x (i, j),
• - so that one or more observers 3 due to the effect of the optical element 2 see respectively see with both eyes substantially different picture elements x (i, j) and / or parts thereof, whereby both eyes perceive substantially different views A (k) and thus creates a spatial visual impression,
• - According to the invention, the image display device with the grid 1 as well as the optical element 2 are designed flexible,
• - and the optical element 2 over a flexible substrate 4 connected to the image display device.

In the optical element 2 it may be a lenticular screen or, preferably, a parallax barrier screen.

The flexible substrate 4 may preferably be a transparent silicone adhesive. It is important that when bending the arrangement possible assignments of partial surfaces of the optical element 2 to subareas of the grid 1 essentially obtained lead ben. This allows the spatial impression to a certain extent largely retained even if the arrangement is bent. Needless to say, however, the best viewing impression is then present when the grid 1 and the optical element 2 are essentially in a flat state.

Needless to say, the optical element must 2 to the grid 1 be suitably aligned, which is well known in the art.

In the image display device with the grid 1 in this embodiment, it is a color LCD screen, in which flexible end lenses are present. Furthermore, this color LCD screen uses a special liquid crystal mixture that can easily tolerate the flexible bending of the device.

As an optical element 2 In this example, a parallax barrier screen is present. The parallax barrier structure of this screen may be an exposed and developed photographic film which faces the flexible substrate 4 applied (eg glued with transparent adhesive) is.

Preferably, the emulsion layer of the photographic film faces the flexible substrate 4 , This makes the production particularly easy.

2 shows a schematic representation of a bent state of an arrangement according to the invention. The flexible substrate 4 is indicated here by dashes.

In addition, the assignment of the partial image information of different views A (k) to the pixels x (i, j) takes place in a two-dimensional periodic pattern. An example of 5 views on a grid 1 with color subpixels (R, G or B) as picture elements x (i, j) is in 3 shown.

Moreover, it is advantageous if the optical element 2 Means for reducing Störlichtreflexen, preferably at least one interference-optical anti-reflection layer contains.

Naturally the arrangement according to the invention must also with appropriate 3D control signals, ie the images combined from the views A (k), be controlled, what about a control electronics or a portable (eg portable) PC or a mobile phone can be done.

The Advantages of the invention are versatile. It offers one as desired Possibility for autostereoscopic presentation, which bending the imager at least temporarily allows without destroying the arrangement. This can be a flat, scrollable 3D display, but also a 3D large-screen system or a kind of roller blind can be created with 3D representation.

application areas can be found, for example, for clothing (jackets), bags with integrated 3D display, rollable billboards and military Area.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - GB 190418672 A [0002]
• - JP 8-331605 AA [0003]
• US 5808599 A [0004]
• - US 5936607 A [0004]
• WO 00/10332 A1 [0004]
• EP 791847 A1 [0005]
• - US 6157424 A [0006]
• WO 02/35277 A1 [0006]

Cited non-patent literature

• - Sam H. Kaplan "Theory of parallax barriers", Journal of SMPTE Vol. 59, No. 7, pp. 11-21, July 1952 [0002]

Claims (12)

Arrangement for spatial representation, comprising - a picture display device with picture elements x (i, j) in a grid ( 1 ) with rows (i) and columns (j) on which partial image information of different views A (k) with k = 1, ..., n and n> 1 can be made visible, - at least one of the grid ( 1 ) with pixels x (i, j) at a distance s upstream or downstream optical element ( 2 ), which predetermines light propagation directions for the light transmitted or emitted by the picture elements x (i, j), so that one or more observers ( 3 ) due to the effect of the optical element ( 2 ) each with two eyes substantially different picture elements x (i, j) and / or parts thereof see or see, whereby both eyes each substantially different views A (k) perceive and thus creates a spatial visual impression, - characterized in that the image display device with the grid ( 1 ) as well as the optical element ( 2 ) are made flexible, and that the optical element ( 2 ) over a flexible substrate ( 4 ) is connected to the image display device. Arrangement according to claim 1, characterized in that the optical element ( 2 ) is a parallax barrier screen or a lenticular screen. Arrangement according to claim 1 or 2, characterized in that when bending the arrangement possible assignments of partial surfaces of the optical element ( 2 ) to subareas of the grid ( 1 ) are essentially preserved. Arrangement according to one of the preceding claims, characterized in that the flexible substrate is a transparent one Silicone glue is. Arrangement according to one of the preceding claims, characterized in that the assignment of the image part information different views A (k) to the pixels x (i, j) in one two-dimensional periodic pattern takes place, the period length in the horizontal and the vertical direction no more than respectively 32 pixels x (i, j). Arrangement according to one of the preceding claims, characterized in that the vertical period length is equal to the number of views shown. Arrangement according to one of the preceding claims, characterized in that the picture elements x (i, j) are color subpixels (R, G or B) or clusters of color subpixels (eg RG or GB) or full color pixels or grayscale pixels. Arrangement according to one of the preceding claims, characterized in that the image display device a Color LCD screen, an OLED screen, an OEL screen or an LED-based screen, wherein each is preferred flexible end glasses are available. Arrangement according to one of the preceding claims, characterized in that - insofar as an optical element ( 2 ) a parallax barrier screen is present - this consists of a flexible glass substrate, on which on the back of the barrier structure is applied. Arrangement according to claim 9, characterized that the barrier structure is an exposed and developed photographic Film is the back of the flexible glass substrate is laminated, wherein preferably the emulsion layer of the photographic Films to the flexible glass substrate shows. Arrangement according to one of claims 1 to 8, characterized in that -in so far as an optical element ( 2 a parallax barrier screen is present, consisting of a photographic film which is placed on the flexible substrate ( 4 ) is applied. Arrangement according to one of the preceding claims, characterized in that the optical element ( 2 ) Means for reducing Störlichtreflexen, preferably at least one interference-optical anti-reflection coating contains.