WO2010046234A1 - Procédé pour le positionnement d'un élément optique sur un dispositif de reproduction d'image - Google Patents

Procédé pour le positionnement d'un élément optique sur un dispositif de reproduction d'image Download PDF

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Publication number
WO2010046234A1
WO2010046234A1 PCT/EP2009/063042 EP2009063042W WO2010046234A1 WO 2010046234 A1 WO2010046234 A1 WO 2010046234A1 EP 2009063042 W EP2009063042 W EP 2009063042W WO 2010046234 A1 WO2010046234 A1 WO 2010046234A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical element
display device
image display
preferred direction
relative
Prior art date
Application number
PCT/EP2009/063042
Other languages
German (de)
English (en)
Inventor
Markus Klippstein
Original Assignee
3D Jtvm Limited
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
Application filed by 3D Jtvm Limited filed Critical 3D Jtvm Limited
Priority to TW098135047A priority Critical patent/TW201027122A/zh
Publication of WO2010046234A1 publication Critical patent/WO2010046234A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/29—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/32—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size

Definitions

  • the invention relates to a method for aligning an optical element on a picture display device, in particular for generating a picture display device suitable for spatial representation.
  • the invention is therefore based on the object of specifying a possibility for aligning an optical element on an image display device for generating a spatial representation suitable image display device with the simplest possible means, so that a sufficiently accurate alignment in a relatively short time and with high reproducibility is realized.
  • a method for positioning an optical element on a picture display device with picture elements x (i, j) in a grid of lines i and columns j for producing a picture display device suitable for spatial representation comprising the following steps:
  • Marking a second preferred direction on the optical element positioning the optical element in front of the image display device relative thereto by aligning the first and second preferred directions relative to each other according to a predetermined translation and / or rotation, such that the optical element is relative to the image display device is aligned with the specified rotation with a tolerance of at most 3 arc minutes.
  • a particular inventive aspect consists in the separation of the alignment of the optical element in front of the image display device (barrier screen, lenticular screen, lenticular screen, structured surface, etc.) in two steps. It is thus not just as in the prior art, the optical element in front of an image display device first arranged and then aligned by means of a test image, but according to the invention, a first preferred direction is defined during or immediately after the production process of the image display device selbiger. At the same time it is ensured on the optical element by defining a second preferred direction on this, that this first preferred direction is observed directly when attaching the optical element on the image display device. The previously necessary alignment of the optical element in front of the image display device therefore takes place virtually automatically in the positioning step.
  • the first preferred direction is marked parallel to the direction of the rows i or the columns j and thus runs parallel to this. But it is also possible in any other direction.
  • the optical element is formed as an active or passive parallax barrier screen, which at an angle a relative to the horizontal inclined or stepped, transparent and opaque sections.
  • the optical element prefferably be designed as a lenticular screen, as an active or passive holographic-optical element (HOE), as an active or passive lenticular grid, as a structured surface or as a prism grid.
  • HOE holographic-optical element
  • the marking according to the invention of a second preferred direction on the optical element takes place relative to an optical preferred direction of the optical structures of the optical element.
  • the optical structures would be the transparent and opaque sections facing the second preferred direction, e.g. horizontal, inclined at an angle a. If the transparent and opaque sections are rectangular and arranged offset from one another so that the impression of a transparent line arises from a distance, the angle a would be that angle which a straight line through the transparent areas - so that the distances of all points in the transparent areas to this line are minimal - with the second preferred direction includes.
  • the preferred optical direction of the optical structures would be, for example, the main propagation direction of the individual cylindrical lenses on the optical element.
  • n> 1 for example 2, 3, 4, 5, 6, 7, 8, 9 or even more views, permits a pleasant and flexible spatial representation which, depending on the design, is based on known methods such as the parallax barrier method (see also the writings mentioned at the beginning) or the lenticular method and is familiar to the person skilled in the art.
  • the views A (k) preferably correspond to different perspectives of a scene or an object, as in various other 3D reproduction methods as well.
  • the first and second preferred directions are particularly preferably converted into a parallel relative position (as said given relative position) relative to one another, ie aligned parallel to one another.
  • Other relative positions can be specified, such as squareness.
  • the method can be extended so that at least one further first preferred direction is marked on the image display device and at least one further second preferred direction is marked on the optical element.
  • the optical element is then positioned in front of the image display device relative thereto by additionally or alternatively the at least one further first and the at least one further second preferred direction being aligned relative to one another in accordance with the predetermined translation, so that the optical element relative to the image display device horizontal portion of the given translation is aligned with a tolerance of at most the width of a picture element x (i, j).
  • a further step of storing an image of a presented test image recorded by a camera can be carried out, in which case a clear association with the physical image display device and / or the optical image display device is preferred Element is made, for example, by naming the image file to be stored for said image in the form of a serial number of the image display device.
  • the picture elements x (i, j) respectively correspond to individual color subpixels (R, G or B) or clusters of color subpixels (eg RG, GB or RGBR or other) or full color pixels, with full color pixels including white mixing entities of RGB Color subpixels, so RGB triplets, as well as - depending on imaging technology - actual full-color pixels - as often used in projection screens are meant.
  • the optical element after positioning in front of the image display device at a defined distance s permanently attached to the image display device.
  • a detachable connection is conceivable.
  • a color LC display LCD
  • a plasma display a projection screen, an LED-based screen, an OLED-based screen, an SED screen or a VFD screen or a corresponding panel of one of the aforementioned can be used as the image display device Screen or display types.
  • Other embodiments are possible.
  • a parallax barrier screen is used as the optical element, it advantageously consists of a glass substrate to which the barrier structure is applied.
  • the barrier structure is an exposed and developed photographic film laminated on the back of the glass substrate, and preferably, the emulsion layer of the photographic film does not face the glass substrate.
  • the opaque areas of the barrier structure may also be formed by ink printed on the glass substrate.
  • the optical element has means for reducing interfering light reflections, preferably at least one interference-optical antireflection coating.
  • the image display device may have a frame, which consists for example of metal, wherein the first preferred direction is marked by at least two holes or two elevations are attached to the frame during or after the production of the image display device. The connection of the centers of the two holes or elevations then defines said first preferred direction.
  • the optical element complementary includes at least two detents (in the case of holes in the frame) or holes (in the case of protrusions in the frame) so that the positioning of the optical element in front of the image display device relative to this is done by snapping ,
  • the second preferred direction is then defined accordingly by the connection of the centers of the locking lugs or holes on the optical element.
  • the elevations or the holes can be covered by a frame.
  • the inventive positioning is achieved solely by an aligning element, such as a cross-shaped hole in the image display device or in the optical element, which is connected by a corresponding complementary cross-shaped plug.
  • the image display device may comprise a frame made of metal, for example, wherein the first preferred direction is defined by a surface of a part of said frame, for example by an edge or a non-visible support, guide or edge mounted in the frame.
  • the orientation of the optical element with respect to the horizontal (and possibly vertical) relative position is of course achieved in the tolerance specified in the beginning only within recurring periods, which are generally approximately integer multiples of the width or height of a picture element x (i, j) .
  • the term "relative position" does not actually mean a position or a location, but rather the relative position of the first and the second preferred direction, which can be defined, for example, by vectors of the same length
  • the relative position of the two vectors to one another then includes a distance in the form of a horizontal and / or vertical translation and a rotation by a predetermined angle, for example zero or 90 degrees.
  • the image display device comprises a display panel, a base frame and a front frame.
  • the base frame can be made of metal, for example, the front frame, which serves as a panel, and plastic.
  • the display panel is inserted into the base frame and aligned with it.
  • the base frame with the display panel is inserted into the front frame and also aligned with it.
  • an edge of the front frame is marked.
  • the optical element is then adapted in its dimensions so that it can be fitted in the front frame.
  • an edge of the optical element which is to be applied to the corresponding edge of the front frame during installation forms the second preferred direction and is preferably formed relative to an optical preferential direction on the optical element. This results in the positioning, which must be done during assembly, an automatic alignment of the
  • one or more further edges of the front frame may be defined as further first preferred directions and corresponding further second preferred directions on the optical element.
  • the step of positioning the optical element can, in principle, be carried out manually by an operator or automatically by a robot or possibly even mixed by an operator and a robot.
  • a spatial-temporal separation of the method steps for certain applications makes sense, such as when the marking of the first and second preferred direction (s) is performed by the manufacturer of the optical element or the image display device, however, the positioning of the optical element only at a later date by the end user is performed.
  • the parameters for the optical element can be easily calculated in the case of a parallax barrier screen, for example with the aid of the two equations (1) and (2) known from the article by Sam H. Kaplan mentioned above. This results in all the necessary relations between the distance s, between the grid of picture elements x (i, j) and the optical element, the average eye relief in humans of 65 mm, the viewing distance, the (horizontal) period length of the transparent sections Barrier and the strip width of said transparent sections. Likewise, some of the documents mentioned at the outset give further design information for optical elements, such as lenticular screens, which are well known to the person skilled in the art.
  • FIG. 2 shows a schematic image reproduction device 1 with picture elements x (i, j) in a grid of lines i and columns j
  • FIG. Fig. 3 shows an exemplary optical element 2, as well
  • FIG. 4 shows an optical element 2 embodied by way of example as a lenticular screen.
  • FIG. 1 thus shows the schematic structure of an image display device 1 suitable for spatial representation, wherein a viewer 3 looks through an optical element 2, here for example a parallax barrier screen, which is also denoted by the reference numeral 2, onto an image display device 1 and gained a spatial impression.
  • Image reproduction device 1 and parallax barrier screen 2 are arranged substantially parallel to one another and at a distance s from one another.
  • the parallax barrier screen 2 can, as in one of the documents cited above, e.g. JP 08-331605 be configured, wherein the image display device 1 is a prepared from several views image, as described in the aforementioned document.
  • the picture display device 1 as well as the parallax barrier screen 2 are present before the method according to the invention is executed (state not shown in the drawing), they are not yet aligned with one another as shown in FIG. no 3D impression is possible.
  • the optical element (2) is positioned in front of the image display device 1 relative thereto by aligning the first and second preferred directions relative to each other according to a predetermined translation and / or rotation. As a consequence, the optical element 2 is then aligned relative to the image display device 1, in particular with regard to the predetermined rotation with a tolerance of at most three minutes of arc, which is important for the spatial visual impression.
  • FIG. 2 shows a schematic image reproduction device 1 with picture elements x (i, j) in a grid of lines i and columns j.
  • the image display device 1 a frame 6, which consists for example of metal on.
  • the first preferred direction is now marked, for example, by attaching at least two holes 4a and 4b to the frame 6 during or after production of the image display device 1, whose connection of the center points defines said first preferred direction.
  • the optical element 2 contains complementary at least two locking lugs 5a, 5b (in the case of holes 4a, 4b in the frame 6), as shown in Figure 3, wherein the second preferred direction then defined by the connection of the centers of the locking lugs is, so that the positioning of the optical element 2 in front of the image display device 1 according to the thus defined relative position can be done by simply snapping. This is a particularly effective way of aligning the optical element 2 is realized.
  • the first preferred direction is parallel to the direction of rows i or columns j, i. she is marked in that direction.
  • the marking according to the invention of a second preferred direction on the optical element 2 is preferred relative to a preferred direction of the optical structures of the optical
  • the optical structures would be the transparent and opaque sections arranged along an optical preferred direction, which could be inclined at an angle a relative to the second preferred direction.
  • the preferred direction of the optical structures would be, for example, the main propagation direction of the individual cylindrical lenses on the optical element 2, also opposite the second
  • - 10 - is defined by the at least two latching lugs 5a, 5b on the optical element 2, ie the lenticular screen.
  • the optical element 2 can also be designed as a lenticular screen, as shown in FIG. 4.
  • the cylindrical lens elements 7 of the lenticular screen are indicated schematically.
  • the first and second preferred directions are particularly preferably converted into a parallel relative position to each other, i. aligned parallel to each other.
  • Other embodiments are possible.
  • the number of n> 1, for example, 2, 3, 4, 5, 6, 7, 8, 9 or 16 views allows a pleasant and flexible spatial representation, depending on the design on known methods such as the parallax barrier method (see also the beginning mentioned writings) or the lenticular method and is familiar to the expert.
  • the views A (k) preferably each correspond to different perspectives of a scene or an object, as in various other 3D rendering methods as well.
  • the picture elements x (i, j) respectively correspond to individual color subpixels (R, G or B).
  • the optical element 2 after positioning in front of the image display device 1 at a defined distance s permanently attached to the image display device 1.
  • a color LC display LCD
  • a plasma display or an OLED-based screen or a corresponding panel of one of the aforementioned screen or display types can be used as image display device 1.
  • a parallax barrier screen is used as optical element 2
  • the barrier structure is an exposed and developed photographic film laminated on the back of the glass substrate, and preferably, the emulsion layer of the photographic film does not face the glass substrate.
  • the optical element 2 contains means for reducing extraneous light reflections, preferably at least one interference-optical antireflection coating.
  • the step of positioning the optical element 2 may, in principle, be performed manually by an operator or automatically by a robot or possibly even mixed by an operator and a robot.
  • the image display device comprises a display panel, a base frame and a front frame.
  • the base frame can be made of metal, for example, the front frame, which serves as a panel, and plastic.
  • the display panel is inserted into the base frame and aligned with it.
  • the base frame with the display panel is inserted into the front frame and also aligned with it.
  • an edge of the front frame is marked.
  • the optical element is then adapted in its dimensions so that it can be fitted in the front frame.
  • an edge of the optical element which is to be applied to the corresponding edge of the front frame during installation, forms the second preferred direction and is preferably formed relative to an optical preferred direction on the optical element.
  • one or more further edges of the front frame may be defined as further first preferred directions and corresponding further second preferred directions on the optical element.
  • the advantages of the invention are versatile.
  • the method according to the invention allows the alignment of an optical element, such as a parallax barrier screen or a lenticular screen, on an image display device for generating a high-resolution spatial representation image display device in a relatively short time
  • the step of aligning the optical see before the image display device or the use can advantageously in the inventive method a test image (and thus the wiring and switching the image display device) omitted, which means an enormous saving of time. Furthermore, it is applicable to different sized picture display devices, thus very flexible. Moreover, said alignment can be implemented manually, automatically or semi-automatically.
  • the invention can be realized with simple and commercially available means.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention porte sur un procédé pour le positionnement d'un élément optique (2) sur un dispositif (1) de reproduction d'image, comportant des éléments d'image x(i,j) dans une trame constituée de lignes (i) et de colonnes (j), pour la production d'un dispositif (1) de reproduction d'image, convenant à une représentation spatiale. Ce procédé comprend les étapes de : (i) marquage d'une première direction préférentielle sur le dispositif (1) de reproduction d'image par rapport à la trame constituée de lignes (i) et de colonnes (j), (ii) marquage d'une deuxième direction préférentielle sur l'élément optique (2), (iii) positionnement de l'élément optique (2) en avant du dispositif (1) de reproduction d'image par rapport à ce dernier, par orientation de la première et de la deuxième direction préférentielle l'une par rapport à l'autre, correspondant à une translation et/ou à une rotation prédéfinie, de façon que l'élément optique (2) soit orienté, par rapport au dispositif (1) de reproduction d'image, et pour ce qui concerne la rotation prédéfinie, avec une tolérance d'au moins trois minutes d'arc.
PCT/EP2009/063042 2008-10-20 2009-10-07 Procédé pour le positionnement d'un élément optique sur un dispositif de reproduction d'image WO2010046234A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW098135047A TW201027122A (en) 2008-10-20 2009-10-16 Method for positioning an optical element on a display

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008052835.8 2008-10-20
DE102008052835A DE102008052835A1 (de) 2008-10-20 2008-10-20 Verfahren zur Positionieren eines optischen Elements auf einer Bildwiedergabeeinrichtung

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Publication Number Publication Date
WO2010046234A1 true WO2010046234A1 (fr) 2010-04-29

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DE (1) DE102008052835A1 (fr)
TW (1) TW201027122A (fr)
WO (1) WO2010046234A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102012205271B3 (de) 2012-03-30 2013-07-18 Carl Zeiss Vision International Gmbh Visualisierungssystem für dreidimensionale Bilder

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US5500765A (en) * 1994-05-11 1996-03-19 Dimension Technologies Inc. Convertible 2D/3D autostereoscopic display
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US20030227450A1 (en) * 2001-06-08 2003-12-11 Seiji Satoh Display unit, position adjusting pattern display program, recording medium, polarization glasses, and filter position adjusting method for display unit
US20040008251A1 (en) * 2002-03-29 2004-01-15 Ken Mashitani Stereoscopic image display device using image splitter, adjustment method thereof, and stereoscopic image display system
US20040263970A1 (en) * 2003-01-29 2004-12-30 Mckee William James Convertible autostereoscopic flat panel display

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DE20106691U1 (de) 2001-04-18 2001-06-21 Tai Technology Co Einstellbare Parallaxenplatten-Baugruppe zum Betrachten von dreidimensionalen Bildern auf einer Darstellungseinheit
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US4927238A (en) * 1984-11-27 1990-05-22 Nicholas C. Terzis Method and apparatus for displaying a three dimensional visual image
US5500765A (en) * 1994-05-11 1996-03-19 Dimension Technologies Inc. Convertible 2D/3D autostereoscopic display
DE20013873U1 (de) * 2000-08-04 2001-03-01 4D Vision Gmbh Anordnung zur wahlweisen Darstellung von zweidimensional oder dreidimensional wahrnehmbaren Bildinhalten
US20030227450A1 (en) * 2001-06-08 2003-12-11 Seiji Satoh Display unit, position adjusting pattern display program, recording medium, polarization glasses, and filter position adjusting method for display unit
US20040008251A1 (en) * 2002-03-29 2004-01-15 Ken Mashitani Stereoscopic image display device using image splitter, adjustment method thereof, and stereoscopic image display system
US20040263970A1 (en) * 2003-01-29 2004-12-30 Mckee William James Convertible autostereoscopic flat panel display

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TW201027122A (en) 2010-07-16
DE102008052835A1 (de) 2010-04-22

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