WO2018001244A1 - Procédé et système d'affichage 3d à double vue à imagerie intégrée basés sur un réseau de microlentilles à pas de gradient - Google Patents

Procédé et système d'affichage 3d à double vue à imagerie intégrée basés sur un réseau de microlentilles à pas de gradient Download PDF

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Publication number
WO2018001244A1
WO2018001244A1 PCT/CN2017/090342 CN2017090342W WO2018001244A1 WO 2018001244 A1 WO2018001244 A1 WO 2018001244A1 CN 2017090342 W CN2017090342 W CN 2017090342W WO 2018001244 A1 WO2018001244 A1 WO 2018001244A1
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WIPO (PCT)
Prior art keywords
pitch
array
microlens array
image
lens elements
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PCT/CN2017/090342
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English (en)
Chinese (zh)
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吴非
樊为
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成都工业学院
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Publication of WO2018001244A1 publication Critical patent/WO2018001244A1/fr

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    • 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
    • G02B30/10—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images using integral imaging methods
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/307—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using fly-eye lenses, e.g. arrangements of circular lenses

Definitions

  • the present application relates to the field of dual-view 3D display technology, and in particular, to an integrated imaging dual-view 3D display method and system based on a progressive pitch microlens array.
  • Dual-view display is a new type of display that has emerged in recent years. Its principle is that by displaying two different pictures simultaneously on one display screen, the viewers in different viewing directions can only see one of the pictures, thereby achieving the different needs of multiple viewers simultaneously on one display screen. .
  • the integrated imaging 3D display is a true 3D display that does not require any visual aids.
  • the integrated imaging 3D display utilizes the optical path reversible principle, records the stereo information of the 3D scene onto the image recording device through the microlens array, generates a micro image array, and then displays the micro image array on the display screen and reconstructs through the microlens array. A stereoscopic image of the original 3D scene.
  • the integrated imaging dual view 3D display is a fusion of the above two display technologies. It allows viewers to see 3D images in different viewing directions without wearing a visual aid device.
  • the traditional integrated imaging dual-view 3D display has disadvantages such as narrow viewing angle, so its application range is limited.
  • the viewing angle of the traditional integrated imaging dual-view 3D display is:
  • p is the horizontal pitch of the image elements
  • f is the focal length of the lens elements in the microlens array
  • m is the number of image elements in the horizontal direction of the micro image array.
  • the purpose of the application is to solve the problem of narrow viewing angle in the traditional integrated imaging dual-view 3D display technology, and further expand the application range of the integrated imaging dual-view 3D display.
  • the present application provides an integrated imaging dual view 3D based on a gradual pitch microlens array.
  • a display method based on a system comprising a display screen, a barrier array, and a progressive pitch microlens array; the display screen for displaying a micro image array; image elements of the micro image array and the progressive pitch microlens array
  • the lens elements are in one-to-one correspondence, each image element in the micro image array is composed of a first sub-picture element and a second sub-picture element, and the first sub-picture element and the second sub-picture element of the micro image array pass through a lens element of the progressive pitch microlens array, respectively forming a first viewing zone for viewing the first 3D scene and a second viewing zone for viewing the second 3D scene;
  • the lens elements in the same column of the progressive pitch microlens array have the same horizontal pitch and the same vertical pitch.
  • the lens elements in the same row have the same vertical pitch, and the horizontal pitch gradually increases from the center of the row to the edge of the row. Increase
  • the horizontal pitch and the vertical pitch of the image elements in the micro image array are the same as the horizontal pitch and the vertical pitch of the corresponding lens elements in the progressive pitch microlens array, and the center of each image element corresponds thereto Aligning the centers of the lens elements; and arranging the first sub-picture elements and the second sub-picture elements in the same row in the micro image array;
  • the barrier of the barrier array has one end disposed at a boundary of two adjacent image elements in the same row in the micro image array, and the other end of which is disposed at a boundary of two adjacent lens elements corresponding to the image element At the office.
  • the display screen is one of a liquid crystal display, a plasma display, and an organic electroluminescent display.
  • the number of image elements in the micro image array is an odd number, and the number of lens elements in the horizontal direction in the progressive pitch microlens array and the image elements in the horizontal direction in the micro image array The number is the same.
  • the number of barriers in the barrier array is one less than the number of lens elements in the horizontal direction of the tapered pitch microlens array.
  • the horizontal pitch Hi of the i-th column of lens elements on the progressive pitch microlens array is:
  • ceil() is rounded up
  • floor() is rounded down
  • i is a positive integer less than or equal to m
  • p is the horizontal pitch of the lens element at the center of the progressive pitch microlens array.
  • the viewing distance is l
  • f is the focal length of the lens element in the progressive pitch microlens array
  • m is the number of lens elements in the horizontal direction of the progressive pitch microlens array.
  • the viewing angles of the first viewing zone and the second viewing zone are:
  • p is the horizontal pitch of the image elements located at the center of the micro image array
  • f is the focal length of the lens elements in the progressive pitch microlens array.
  • the embodiment of the present application further provides an integrated imaging dual-view 3D display system based on a gradual pitch microlens array, including a display screen, a barrier array, and a gradation pitch microlens array.
  • the display screen is used to display a micro image array.
  • the image elements of the micro image array are in one-to-one correspondence with the lens elements of the progressive pitch microlens array.
  • Each of the image elements in the micro image array is composed of a first sub-picture element and a second sub-picture element.
  • the first sub-picture element and the second sub-picture element of the micro image array pass through the lens elements of the gradation pitch microlens array, respectively forming a first view area for viewing the first 3D scene and for viewing the second The second viewport of the 3D scene.
  • the lens elements in the same column of the progressive pitch microlens array have the same horizontal pitch and the same vertical pitch, and the lens elements in the same row have the same vertical pitch, and the horizontal pitch is from the center of the row to the row.
  • the edges gradually increase.
  • the horizontal pitch and the vertical pitch of the image elements in the micro image array are the same as the horizontal pitch and the vertical pitch of the corresponding lens elements in the progressive pitch microlens array, and the center of each image element corresponds thereto
  • the center of the lens elements is aligned; and the first sub-picture element and the second sub-picture element in the same row in the micro image array are arranged in phase.
  • the barrier of the barrier array has one end disposed at a boundary of two adjacent image elements in the same row in the micro image array, and the other end of which is disposed at a boundary of two adjacent lens elements corresponding to the image element At the office.
  • the display screen is one of a liquid crystal display, a plasma display, and an organic electroluminescent display.
  • the number of image elements in the micro image array is an odd number, and the number of lens elements in each row of the progressive pitch microlens array and the image elements in the micro image array corresponding to the row The number is the same.
  • the number of barriers corresponding to the lens elements of each row of the progressive pitch microlens array is one less than the number of lens elements of the row.
  • the central area of the display screen divides the display screen into a first area and a second area, the first area corresponding to the first view area, and the second area The second viewing zone corresponds to.
  • an area where an image element at a center line of the display screen is located is the central area, and a lens element corresponding to the central area in the gradation pitch microlens array is at a center position Lens element.
  • the progressive pitch microlens array is an array microlens array.
  • the horizontal pitch Hi of the i-th column of lens elements on the progressive pitch microlens array is:
  • ceil() is rounded up
  • floor() is rounded down
  • i is a positive integer less than or equal to m
  • p is the horizontal pitch of the lens element at the center of the progressive pitch microlens array.
  • the viewing distance is l
  • f is the focal length of the lens elements in the progressive pitch microlens array
  • m is the number of lens elements in each row of the progressive pitch microlens array.
  • the viewing angle of the first viewing zone and the viewing angle of the second viewing zone are both the horizontal pitch of the lens element at the central region and the lens in the progressive pitch microlens array
  • the focal length of the element is related.
  • the viewing angles of the first viewing zone and the second viewing zone are:
  • p is the horizontal pitch of the image elements located at the center of the micro image array
  • f is the focal length of the lens elements in the progressive pitch microlens array.
  • connection between adjacent image elements of each row in the micro image array is a first connection point
  • the adjacent two lenses of each row in the gradation pitch microlens array The connection between the elements is a second connection point
  • each of the first connection points corresponds to one of the second connection points
  • a space is set between the first connection point and the second connection point corresponding to each other Said barrier.
  • the barrier is a plate-like structure, one end of the barrier is connected to the first connection point, and the other end of the barrier is connected to a second connection point corresponding to the first connection point.
  • the beneficial effects of the present application in the integrated imaging dual-view 3D display method based on the progressive pitch microlens array, the lens elements in the same column of the progressive pitch microlens array have the same horizontal pitch
  • the vertical pitch is the same, the lens elements in the same row have the same vertical pitch, and the horizontal pitch gradually increases from the center of the row to the edge of the row
  • the horizontal and vertical pitch of the image elements in the micro image array are The horizontal pitch and the vertical pitch of the corresponding lens elements in the progressive pitch microlens array are the same, the center of each image element is aligned with the center of its corresponding lens element; and the first sub-image of the same row in the micro image array And the second sub-picture element, the two are arranged in phase
  • the barrier of the barrier array has one end disposed at a boundary of two adjacent image elements in the same row in the micro image array, and the other end of which is disposed corresponding to the image element The junction of two adjacent lens elements.
  • FIG. 1 is a schematic structural view of an integrated imaging dual-view 3D display system based on a progressive pitch microlens array of the present application
  • FIG. 2 is another schematic structural diagram of an integrated imaging dual-view 3D display system based on a gradual pitch microlens array of the present application
  • FIG. 3 is a schematic structural diagram of a micro image array of the present application.
  • FIG. 5 is a second 3D scene view viewed from the second viewing zone of the present application.
  • FIG. 1 and FIG. 2 respectively show a schematic structural diagram of the present application and a schematic structural diagram of a micro image array of the present application; wherein, the present application is based on an integrated imaging dual-view 3D display method of a progressive pitch microlens array, based on the system
  • the display screen 1 and the barrier array 3 and the progressive pitch microlens array 2 are included; the display screen 1 is used to display the micro image array 4; the image elements 5 of the micro image array 4 are in one-to-one correspondence with the lens elements of the progressive pitch microlens array 2.
  • Each picture element 5 in the micro image array 4 is composed of a first sub picture element 6 and a second sub picture element 7, and the first sub picture element 6 and the second sub picture element 7 of the micro image array 4 pass the gradation pitch
  • the lens elements of the microlens array 2 form a first viewing zone 8 for viewing the first 3D scene and a second viewing zone 9 for viewing the second 3D scene, respectively.
  • the first 3D scene graph and the second 3D scene graph are respectively shown in FIG. 3 and FIG. 4 .
  • the lens elements in the same column of the gradation pitch microlens array 2 have the same horizontal pitch and the same vertical pitch, and the lens elements in the same row have the same vertical pitch, and the horizontal pitch is from the center of the line to the edge of the line. Gradually increase.
  • the horizontal pitch and the vertical pitch of the image element 5 in the micro image array 4 are the same as the horizontal pitch and the vertical pitch of the corresponding lens elements in the progressive pitch microlens array 2, and the center of each image element 5 corresponds thereto.
  • the center of the lens elements is aligned; and the first sub-picture element 6 and the second sub-picture element 7 in the same row in the micro image array 4 are arranged in phase.
  • the direction indicated by the arrow F is a horizontal direction, that is, the direction is parallel to the row direction of the progressive pitch microlens array and the row direction of the micro image array.
  • the display has a central area, which is the position shown by T in Figure 2.
  • the center area T of the display screen divides the display screen into a first area Q1 and a second area Q2.
  • the first area Q1 and the second area Q2 serve as an observation area of the user.
  • the first area Q1 corresponds to the first view area, that is, the content observed by the user through the first view area is displayed in the first area
  • the second area Q2 corresponds to the second viewing zone, that is, the content observed by the user through the second viewing zone is displayed in the second area.
  • first region Q1 and the second region Q2 respectively correspond to image elements of the region, and each image element corresponds to one lens element. Therefore, the first region Q1 and the second region Q2 respectively correspond to the region. Lens element.
  • the display screen of the present application employs one of a liquid crystal display, a plasma display, and an organic electroluminescent display.
  • the number of image elements in the micro image array is an odd number
  • the number of lens elements in the horizontal direction in the progressive pitch microlens array is the same as the number of image elements in the horizontal direction in the micro image array.
  • the number of barriers in the horizontal direction in the barrier array is one less than the number of lens elements in the horizontal direction in the tapered pitch microlens array.
  • the image elements of a row in the micro image array and a row of lens elements of the progressive pitch microlens array corresponding to the row are shown.
  • the number of image elements is 5, and symmetrically distributed in the horizontal direction
  • the number of lens elements is also five, and is also symmetrically distributed in the horizontal direction.
  • Each image element corresponds to one lens element
  • the center of each image element corresponds to the corresponding lens element.
  • the center of the image element is O1
  • the center of the lens element is O2
  • O1 and O2 correspond, that is, The line connecting O1 and O2 is perpendicular to the horizontal direction, and the image element is directly opposite to the lens element corresponding to the image element.
  • the center O1 of the image element is to divide the image element into a first sub-picture element and a second sub-picture element.
  • the boundary of the image element corresponding to the lens element intersects, wherein the boundary is the distance of the image element The boundary of the central area T.
  • an extension line connecting the second line of sight of the view area corresponding to the area where the lens element is located and the boundary of the lens element intersects the center of the picture element corresponding to the lens element.
  • the boundary of the lens element is the boundary of the lens near the center position M.
  • the second image element and the second lens element from top to bottom are taken as an example.
  • the dotted line passing through the center O2 of the lens element is the upper first line of sight
  • the dotted line passing through the boundary J2 of the lens element is the second line of sight.
  • the first line of sight extends in the direction of the display screen and corresponds to the lens element.
  • the boundary J1 of the image element intersects, and the second line of sight extends in the direction of the display screen to intersect the center O1 of the image element corresponding to the lens element.
  • the central area T of the display screen is provided with an image element, and the horizontal direction width of the central area T is equal to the horizontal pitch of the image element located in the central area T, wherein the horizontal pitch of the image element is the horizontal direction of the image element
  • the horizontal pitch of the image element is the horizontal direction of the image element
  • the vertical pitch of the image element is the width in the column direction.
  • the horizontal pitch of the lens element is the width in the horizontal direction of the lens element, that is, the width in the row direction.
  • the vertical pitch of the lens element is the width in the column direction.
  • the left and right sides are mirror-symmetrical with two pairs of lens elements, that is, the level of two lens elements adjacent to the lens element at the center position M in the horizontal direction.
  • the pitch is the same, and the horizontal pitch of the two outermost lens elements of the row of lens elements is also the same.
  • the image elements on both sides of the image element in the central region T are also symmetrically distributed, and two image elements are distributed in the first region Q1, and corresponding to two lens elements; in the second region Q2 also There are two image elements distributed, and there are two lens elements.
  • the horizontal pitch of each image element is the same as the horizontal pitch of the lens element corresponding to the image element, and the horizontal pitch of all image elements is centered on the image element of the central area T, and is horizontal to the line boundary.
  • the upper portion is gradually increased, and the level of all the lens elements is solved, centering on the lens element at the center position M, and gradually increasing in the horizontal direction of the line boundary.
  • the barrier ribs of the barrier array 3 are disposed at one end of the two adjacent image elements 5 of the same row in the micro image array 4, and at the other end of the two adjacent lens elements corresponding to the two image elements 5. Junction.
  • the connection between adjacent image elements of each row in the micro image array is a first connection point k1
  • the adjacent two lens elements of each row in the gradation pitch microlens array are The connection between the two is a second connection point k2, and each of the first connection points k1 corresponds to one of the second connection points k2, and the first connection point k1 and the second connection point k2 corresponding to each other
  • One of the barriers 3 is provided between.
  • the barrier 3 is a plate-like structure, one end of the barrier 3 is connected to the first connection point k1, and the other end of the barrier 3 is connected to the second connection point k2 corresponding to the first connection point k1.
  • the barrier occludes the first view area and the second view area, so that when the user observes the display screen through the first view area or the second view area, only the first sub-picture element or the second sub-picture element is seen as far as possible.
  • the white area is the first sub-picture element
  • the gray part is the second sub-picture element.
  • the lowermost picture element is The light emitted by the first sub-picture element is incident on the user's eye through the two lowermost lens elements, and is observed by the user, and the light emitted by the second sub-picture element in the lowermost picture element is blocked by the obstacle avoidance.
  • the first sub-image in the first region Q1 can be observed by the user in the first viewing zone, and the second sub-image in the first region Q1 is blocked by the obstacle avoidance, and cannot be The user in the first viewing area observed.
  • the first sub-image and the second sub-image in the second viewing zone Q2 the user in the second viewing zone can only observe the second sub-image area.
  • the sub-picture elements observed by the first view area and the second view area are different.
  • the first sub-picture element can only observe the first sub-picture element
  • the second sub-picture element can only observe the second sub-picture element.
  • Two different 3D scenes can be seen in the first viewport and the second viewport.
  • the display screen is located at a single focal length of the progressive pitch microlens array, as shown in FIG. 1 and As shown in FIG. 2, the distance between the progressive pitch microlens array and the micro image array is the focal length f of the lens element in the progressive pitch microlens array.
  • the horizontal pitch Hi of the i-th column of lens elements on the progressive pitch microlens array 2 is:
  • ceil() is rounded up
  • floor() is rounded down
  • i is a positive integer less than or equal to m
  • p is the horizontal pitch of the lens element at the center of the progressive pitch microlens array
  • the observation distance l is the distance between the observation point and the gradient pitch microlens array.
  • the observation point corresponding to the first view region is G1, that is, the region indicated by the upper right triangle.
  • the viewing distance of the first viewing zone is the vertical distance from the G1 to the progressive pitch microlens array.
  • the viewing distance of the second viewing zone is the vertical distance from the G2 to the progressive pitch microlens array.
  • the viewing distance of the first viewing zone is the same as the viewing distance of the second viewing zone. Therefore, the value of the viewing distance l may be the viewing distance of the first viewing zone or the viewing distance of the second viewing zone.
  • the progressive pitch microlens array is an area array.
  • the progressive pitch microlens array comprises M ⁇ N cells, and M and N are integers greater than 1, and the gradient pitch microlens array is horizontally oriented. M of lens elements.
  • the micro image array and the gradual pitch microlens array both contain 11 ⁇ . 11 units, that is, 11 units in the horizontal direction and 11 units in the vertical direction.
  • the horizontal pitches of the lens elements of the first to the eleventh columns are: 8.05255 mm, 7.3205 mm, 6.655 mm, 6.05 mm, 5.5 mm, 5 mm, 5.5 mm, 6.05 mm, 6.655 mm, 7.3205mm, 8.05255mm.
  • the viewing angle of the first viewing zone and the viewing angle of the second viewing zone are both related to the horizontal pitch of the lens elements at the central region and the focal length of the lens elements in the progressive pitch microlens array.
  • the viewing angles of the first viewing zone 8 and the second viewing zone 9 are:
  • p is the horizontal pitch of the image elements located at the center of the micro image array
  • f is the gradient pitch microlens array The focal length of the lens element.
  • the horizontal pitch of the image elements at the center of the micro image array is the horizontal pitch of the image elements of the central region T of FIG. 2 .
  • the viewing angle of the present application is calculated according to the above formula, and the conventional integrated imaging is performed. Viewing angle of dual-view 3D display technology. Therefore, the present application is capable of viewing two different 3D scenes in two viewing zones and achieving an integrated imaging dual view 3D display with a wide viewing angle.
  • the integrated imaging dual-view 3D display method and method based on the gradual pitch microlens array provided by the embodiment of the present application, the lens elements in the same column of the gradual pitch microlens array have the same horizontal pitch, and the vertical The pitches are the same, the lens elements in the same row have the same vertical pitch, and the horizontal pitch gradually increases from the center of the row to the edge of the row; the horizontal and vertical pitch of the image elements in the micro image array are at the gradient pitch The horizontal pitch and the vertical pitch of the corresponding lens elements in the microlens array are the same, the center of each image element is aligned with the center of its corresponding lens element; and the first sub-image element and the first row in the same row in the micro image array Two sub-picture elements, which are arranged in phase; the barrier of the barrier array has one end disposed at a boundary of two adjacent image elements in the same row in the micro image array, and the other end of which is disposed at two corresponding to the image element The junction of adjacent lens elements.
  • the present application not only

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Abstract

Un procédé et un système D'affichage 3D à double vue à imagerie intégrée basés sur un réseau de microlentilles à pas de gradient. Le système sur lequel le procédé est basé comprend un écran d'affichage (1), un réseau de barrière (3) et un réseau de microlentilles à pas de gradient (2). L'écran d'affichage (1) est utilisé pour afficher une matrice de micro-images (4), et des primitives d'images (5) du matrice de micro-images (4) correspondent à des éléments de lentille du réseau de microlentilles à pas de gradient (2) d'une manière un à un. Chaque primitive d'image (5) dans la matrice de micro-images (4) est constituée d'une première sous-primitive d'image (6) et d'une seconde sous-primitive d'image (7). La première sous-primitive d'image (6) et la seconde sous-primitive d'image (7) du réseau de micro-images (4) forment respectivement, au moyen des éléments de lentille du matrice de microlentilles à gradient-pas (2), une première région de visualisation (8) pour visualiser une première scène 3D et une seconde région de visualisation (9) pour visualiser une seconde scène 3D. Grâce au procédé et au système, deux scènes 3D différentes peuvent être observées dans deux régions de visualisation, et un affichage à grand angle de visualisation est obtenu.
PCT/CN2017/090342 2016-06-28 2017-06-27 Procédé et système d'affichage 3d à double vue à imagerie intégrée basés sur un réseau de microlentilles à pas de gradient WO2018001244A1 (fr)

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CN201610486796.5A CN105929553B (zh) 2016-06-28 2016-06-28 基于渐变节距微透镜阵列的集成成像双视3d显示方法
CN201610486796.5 2016-06-28

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CN105911713B (zh) * 2016-06-30 2018-07-03 成都工业学院 一种基于渐变节距微透镜阵列的集成成像3d显示装置
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