WO2021129797A1 - Integrated imaging 3d display device based on liquid scattering layer - Google Patents

Integrated imaging 3d display device based on liquid scattering layer Download PDF

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WO2021129797A1
WO2021129797A1 PCT/CN2020/139336 CN2020139336W WO2021129797A1 WO 2021129797 A1 WO2021129797 A1 WO 2021129797A1 CN 2020139336 W CN2020139336 W CN 2020139336W WO 2021129797 A1 WO2021129797 A1 WO 2021129797A1
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display
integrated imaging
colloid
liquid scattering
component
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PCT/CN2020/139336
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French (fr)
Chinese (zh)
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王琼华
李爽
夏云鹏
邢妍
任慧
邓欢
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北京航空航天大学
四川大学
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical 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
    • G02B30/26Optical 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
    • G02B30/27Optical 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels

Abstract

An integrated imaging 3D display device based on a liquid scattering layer provided in the present application achieves integrated imaging 3D display by emitting a light lay by using an integrated imaging film source in a 2D image display assembly, and modulating the light lay by means of a light ray modulation assembly so as to reproduce a 3D image in a target display space region of a liquid scattering assembly. Compared with an integrated imaging 3D display device based on an optical diffusion screen, the integrated imaging 3D display device based on the liquid scattering layer has a greater 3D depth range, so that different depth planes of the reproduced 3D image can be clearly displayed. A modulation hole in the light ray modulation assembly of the present application further eliminates crosstalk of the reproduced 3D image, and an integrated imaging 3D display effect is optimized.

Description

基于液体散射层的集成成像3D显示装置Integrated imaging 3D display device based on liquid scattering layer
本申请要求于2019年12月27日提交中国专利局、申请号为201911373141.7、发明名称为“一种基于液体散射层的集成成像3D显示装置”的中国专利申请的优先权,并通过引用将其全部内容并入在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911373141.7, and the invention title is "an integrated imaging 3D display device based on a liquid scattering layer" on December 27, 2019, and it is incorporated by reference All content is incorporated in this application.
技术领域Technical field
本申请涉及3D显示,特别涉及一种基于液体散射层的集成成像3D显示装置。This application relates to 3D display, and in particular to an integrated imaging 3D display device based on a liquid scattering layer.
背景技术Background technique
3D显示是一种新型显示技术,近年来受到科研人员和产业界的高度关注。集成成像3D显示是一种重要的裸眼3D显示技术,具有真彩色、全视差、无立体观看视疲劳等优点。集成成像3D显示需要在2D显示屏上显示出记录原3D物体光场信息的微图像阵列,并利用2D显示屏前方附加的透镜阵列恢复出原3D物体的光场信息,提供给多位观看者同时观看。在集成成像3D显示装置中,受相邻透镜元间距的影响,再现的3D图像存在不完整和不连续的问题。光学扩散屏是能够在空间上调制入射光束光强的光学膜材,其引入可以再现连续完整的3D图像。然而,仅在光学扩散屏附近极窄的深度范围内才能获得较好的3D显示效果,能够清晰再现3D图像的深度范围小于无光学扩散屏的传统集成成像3D显示的深度。目前,仍缺少能够同时再现连续3D图像和达到无光学扩散屏的集成成像3D深度范围的集成成像3D显示装置。3D display is a new type of display technology, which has received great attention from scientific researchers and the industry in recent years. Integrated imaging 3D display is an important naked-eye 3D display technology, which has the advantages of true color, full parallax, and no stereoscopic viewing fatigue. The integrated imaging 3D display needs to display the micro image array that records the light field information of the original 3D object on the 2D display screen, and use the additional lens array in front of the 2D display screen to restore the light field information of the original 3D object and provide it to multiple viewers. Watch at the same time. In the integrated imaging 3D display device, affected by the distance between adjacent lens elements, the reproduced 3D image has the problem of incompleteness and discontinuity. The optical diffuser is an optical film that can spatially modulate the intensity of the incident beam, and its introduction can reproduce a continuous and complete 3D image. However, a good 3D display effect can be obtained only in a very narrow depth range near the optical diffuser, and the depth range that can clearly reproduce 3D images is smaller than that of the traditional integrated imaging 3D display without the optical diffuser. At present, there is still a lack of integrated imaging 3D display devices capable of simultaneously reproducing continuous 3D images and achieving an integrated imaging 3D depth range without optical diffusion screens.
发明内容Summary of the invention
根据本申请的实施例,提供一种基于液体散射层的集成成像3D显示装置,所述显示装置包括:2D图像显示组件,用于接收并显示微图像阵列;光线调制组件,设置于所述2D图像显示组件前方,用于调制2D图像显示组件所发出的 光线,并使光线在液体散射组件内再现3D图像;液体散射组件,设置于光线调制组件前方,用于对经光线调制组件调制后的光线进行散射,在液体散射组件内再现连续的3D图像,提升3D深度范围。According to an embodiment of the present application, an integrated imaging 3D display device based on a liquid scattering layer is provided. The display device includes: a 2D image display component for receiving and displaying a micro image array; a light modulation component disposed on the 2D The front of the image display component is used to modulate the light emitted by the 2D image display component and make the light reproduce the 3D image in the liquid scattering component; the liquid scattering component is arranged in front of the light modulation component and is used to modulate the light emitted by the light modulation component. The light is scattered, and continuous 3D images are reproduced in the liquid scattering component to increase the 3D depth range.
在一实施例中,所述基于液体散射层的集成成像3D显示装置的组件水平层叠地放置。In an embodiment, the components of the integrated imaging 3D display device based on the liquid scattering layer are placed in a horizontal stack.
在一实施例中,所述2D图像显示组件可以是显示屏、投影仪或接收屏,位于所述装置的最后方,用于接收并显示集成成像片源。In an embodiment, the 2D image display component may be a display screen, a projector or a receiving screen, which is located at the rear of the device and is used to receive and display the integrated imaging film source.
在一实施例中,所述集成成像片源由单帧或多帧微图像阵列组成,所述每帧微图像阵列对应于深度与视角范围内的3D图像信息,由多个图像元编码生成,所述每个图像元包含所述3D图像信息的一部分。In an embodiment, the integrated imaging film source is composed of a single frame or a multi-frame micro image array, and each frame of the micro image array corresponds to 3D image information within the range of depth and viewing angle, and is generated by encoding multiple image elements, The each image element contains a part of the 3D image information.
在一实施例中,所述光线调制组件包括调制孔、透镜镜筒板、透镜阵列。In an embodiment, the light modulation component includes a modulation hole, a lens barrel plate, and a lens array.
在一实施例中,所述透镜阵列,由多个所述透镜元排列组成,用于对所述2D图像显示组件上所述集成成像片源发出的光线进行调制,在所述液体散射组件所在位置再现出3D图像,所述单个透镜元由单片式透镜或者多片式透镜共轴排列组成,以与所述调制孔的排列方式对应。In an embodiment, the lens array is composed of a plurality of the lens elements arranged, and is used to modulate the light emitted by the integrated imaging film source on the 2D image display component, and the liquid scattering component is located The position reproduces a 3D image, and the single lens element is composed of a single-piece lens or a multi-piece lens coaxially arranged to correspond to the arrangement of the modulation holes.
在一实施例中,所述液体散射组件设置于所述透镜阵列前方,用于再现完整连续的3D图像并增加3D深度范围。In an embodiment, the liquid scattering component is arranged in front of the lens array for reproducing a complete and continuous 3D image and increasing the 3D depth range.
在一实施例中,所述液体散射组件包括液体散射层和容器,所述容器用于承接所述液体散射层,所述液体散射层为胶体。In one embodiment, the liquid scattering component includes a liquid scattering layer and a container, the container is used to receive the liquid scattering layer, and the liquid scattering layer is a colloid.
在一实施例中,所述胶体为液态胶体,可以是硅酸胶体、氢氧化铝胶体、氢氧化铁胶体、氧化锆胶体、碘化银胶体、蛋白质胶体、淀粉胶体、墨水胶体中的一种。In one embodiment, the colloid is a liquid colloid, which may be one of silicic acid colloid, aluminum hydroxide colloid, ferric hydroxide colloid, zirconia colloid, silver iodide colloid, protein colloid, starch colloid, and ink colloid.
在一实施例中,所述胶体的分散质分子直径d满足公式(1):In one embodiment, the molecular diameter d of the dispersoid of the colloid satisfies the formula (1):
1nm≤d≤100nm      (1)1nm≤d≤100nm (1)
在一实施例中,所述胶体的折射率n满足公式(2):In an embodiment, the refractive index n of the colloid satisfies formula (2):
1.3≤n≤1.9       (2)1.3≤n≤1.9 (2)
在一实施例中,所述胶体厚度h满足公式(3):In one embodiment, the thickness h of the colloid satisfies formula (3):
h≥ΔZ 0     (3) h≥ΔZ 0 (3)
其中,ΔZ 0为无光学扩散屏情况下集成成像达到的3D深度范围,有光学扩散屏情况下的3D深度范围约为其的一半,ΔZ 0与常规透镜阵列主平面到成像平面的距离L、观看距离内人眼所能分辨的最小距离P I以及所述透镜节距P 0相关,满足公式(4): Among them, ΔZ 0 is the 3D depth range achieved by integrated imaging without an optical diffuser, and the 3D depth range with an optical diffuser is about half of it. ΔZ 0 is the distance L from the main plane of the conventional lens array to the imaging plane. The minimum distance P I that can be distinguished by the human eye within the viewing distance is related to the lens pitch P 0 , which satisfies the formula (4):
Figure PCTCN2020139336-appb-000001
Figure PCTCN2020139336-appb-000001
在一实施例中,所述液体散射组件中心平面位于所述常规透镜阵列成像平面,所述常规透镜阵列主平面到成像平面的距离L与所述透镜阵列主平面到所述液体散射组件中心平面的距离l满足公式(5):In an embodiment, the center plane of the liquid scattering component is located on the imaging plane of the conventional lens array, the distance L from the main plane of the conventional lens array to the imaging plane is the same as the main plane of the lens array to the center plane of the liquid scattering component The distance l satisfies formula (5):
L=l      (5)L=l (5)
在一实施例中,所述2D图像显示组件到所述透镜阵列主平面的距离g,所述透镜阵列主平面到所述液体散射组件中心平面的距离l与所述透镜阵列中透镜元的焦距f在集成成像实模式下满足公式(6):In an embodiment, the distance g from the 2D image display component to the main plane of the lens array, the distance l from the main plane of the lens array to the central plane of the liquid scattering component and the focal length of the lens elements in the lens array f satisfies formula (6) in the integrated imaging real mode:
Figure PCTCN2020139336-appb-000002
Figure PCTCN2020139336-appb-000002
在一实施例中,所述3D深度范围ΔZ与观看距离内人眼所能分辨的最小距离P I、所述液体散射组件散射角度θ、所述透镜节距P 0、所述透镜阵列主平面到所述液体散射组件中心平面的距离l相关,满足公式(7): In an embodiment, the 3D depth range ΔZ is the smallest distance P I that the human eye can distinguish within the viewing distance, the scattering angle θ of the liquid scattering component, the lens pitch P 0 , and the principal plane of the lens array The distance l to the center plane of the liquid scattering component is related and satisfies formula (7):
Figure PCTCN2020139336-appb-000003
Figure PCTCN2020139336-appb-000003
在一实施例中,所述3D视角θ v与所述2D图像显示组件到所述透镜阵列主平面的距离g、单个所述调制孔的内径a相关,满足公式(8): In an embodiment, the 3D viewing angle θ v is related to the distance g from the 2D image display component to the main plane of the lens array, and the inner diameter a of the single modulation hole, which satisfies the formula (8):
Figure PCTCN2020139336-appb-000004
Figure PCTCN2020139336-appb-000004
在一实施例中,所述调制孔的高度b与所述2D图像显示组件到所述透镜阵列主平面的距离g满足公式(9):In an embodiment, the height b of the modulation hole and the distance g from the 2D image display component to the main plane of the lens array satisfy formula (9):
b≤g     (9)b≤g (9)
本申请所提出的基于液体散射层的集成成像3D显示装置,利用在2D图像显示组件中由集成成像片源发出光线,并通过光线调制组件对光线进行调制,从而在液体散射组件的目标显示空间区域内再现3D图像,实现集成成像3D显示。与基于光学扩散屏的集成成像3D显示装置相比,具有更大的3D深度范围。The integrated imaging 3D display device based on the liquid scattering layer proposed in this application utilizes the light emitted by the integrated imaging sheet source in the 2D image display assembly, and the light is modulated by the light modulation assembly, so as to display the space in the target display space of the liquid scattering assembly. 3D images are reproduced in the area to realize integrated imaging 3D display. Compared with an integrated imaging 3D display device based on an optical diffuser, it has a larger 3D depth range.
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。The details of one or more embodiments of the present invention are set forth in the following drawings and description. Other features, objects and advantages of the present invention will become apparent from the description, drawings and claims.
附图说明Description of the drawings
为了更好地描述和说明本申请的实施例,可参考一幅或多幅附图,但用于描述附图的附加细节或示例不应当被认为是对本申请的发明创造、目前所描述的实施例或优选方式中任何一者的范围的限制。In order to better describe and illustrate the embodiments of the present application, one or more drawings may be referred to, but the additional details or examples used to describe the drawings should not be considered as the invention and the implementation of the present description of the present application. The scope of any one of the examples or preferred modes is limited.
图1为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的结构的示意图。FIG. 1 is a schematic diagram of the structure of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application.
图2为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的观看原理的示意图。2 is a schematic diagram of the viewing principle of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application.
图3为常规集成成像3D显示装置的3D深度范围的示意图。FIG. 3 is a schematic diagram of the 3D depth range of a conventional integrated imaging 3D display device.
图4为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的3D深度范围的示意图。4 is a schematic diagram of a 3D depth range of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application.
图5为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的视角原理的示意图。FIG. 5 is a schematic diagram of the viewing angle principle of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application.
上述附图中的附图标记为:The reference signs in the above drawings are:
1 2D图像显示组件;2光线调制组件;2-1调制孔;2-2透镜镜筒板;2-3透镜阵列;3液体散射组件;3-1液体散射层;3-2容器;4再现的3D图像;5观看者;6入射光线;7出射光线;8常规透镜阵列。1 2D image display component; 2 light modulation component; 2-1 modulation hole; 2-2 lens barrel plate; 2-3 lens array; 3 liquid scattering component; 3-1 liquid scattering layer; 3-2 container; 4 reproduction 3D image; 5 viewer; 6 incident light; 7 outgoing light; 8 conventional lens array.
具体实施方式Detailed ways
为了便于理解本申请,下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的实施例。本申请可以以许多不同的形式来实现,并不限于本文所描述的实施例。提供这些实施例的目的是使对本申请公开内容的理解更加透彻。In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The embodiments of the application are shown in the drawings. This application can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these examples is to make the understanding of the disclosure of this application more thorough.
除非另有定义,本文所使用的所有术语与属于发明的技术领域的技术人员理解的含义相同。本文中在发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all terms used herein have the same meaning as understood by those skilled in the technical field of the invention. The terms used in the description of the invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.
本文所使用的方位术语“垂直的”、“水平的”、“上”、“下”、“前方”、“后方”以及类似的表述只是为了说明元件之间的相对位置,并不表示是唯一的实施方式也并非对于本申请的限制。The orientation terms "vertical", "horizontal", "upper", "lower", "front", "rear" and similar expressions used herein are only used to illustrate the relative positions between elements, and do not mean that they are unique The implementation mode is not a limitation of the application.
下面将结合本申请公开的多个实施例及附图对本申请所提出的基于液体散射层的集成成像3D显示装置进行详细的描述。Hereinafter, the integrated imaging 3D display device based on the liquid scattering layer proposed in the present application will be described in detail with reference to the multiple embodiments disclosed in the present application and the accompanying drawings.
请参照图1,图1示出了根据本申请一实施例的基于液体散射层的集成成像3D显示装置的结构的示意图。该3D显示装置可以包括2D图像显示组件1、光线调制组件2及液体散射组件3,其中,2D图像显示组件1、光线调制组件2、液体散射组件3依次水平层叠地放置。Please refer to FIG. 1, which shows a schematic diagram of a structure of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application. The 3D display device may include a 2D image display component 1, a light modulation component 2 and a liquid scattering component 3, wherein the 2D image display component 1, the light modulation component 2, and the liquid scattering component 3 are placed horizontally and stacked in sequence.
请参照图2,图2示出了根据本申请一实施例的基于液体散射层的集成成像3D显示装置的观看原理的示意图。Please refer to FIG. 2, which shows a schematic diagram of the viewing principle of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application.
2D图像显示组件1可以是显示屏、投影仪或接收屏,位于集成成像3D显示装置的最后方,用于接收并显示集成成像片源。在一实施例中,2D图像显示 组件1可以是超高清显示屏。例如,该超高清显示屏的型号可以为Dell UP3218K,显示屏的尺寸可以为633mm×317mm,像素大小可以为0.0825mm,显示分辨率可以为7680×4320。The 2D image display component 1 may be a display screen, a projector or a receiving screen, which is located at the rear of the integrated imaging 3D display device, and is used to receive and display the integrated imaging film source. In an embodiment, the 2D image display component 1 may be an ultra-high-definition display screen. For example, the model of the ultra-high-definition display can be Dell UP3218K, the size of the display can be 633mm×317mm, the pixel size can be 0.0825mm, and the display resolution can be 7680×4320.
在一个实施例中,集成成像片源可以由单帧微图像阵列组成,每帧微图像阵列对应于深度范围ΔZ与视角范围θ v内的3D图像信息。每个微图像阵列由多个图像元编码生成,例如50×30个图像元,每个图像元包含微图像阵列对应的3D图像信息的一部分。上述每个图像元所包含的3D图像信息的总和构成每帧微图像阵列所包含的完整的3D图像信息。在一个实施例中,图像元的分辨率可以为121×121个像素,微图像阵列总体分辨率可以为7680×3840个像素。 In one embodiment, the integrated imaging chip may be formed from a single frame of a source array of the micro image, the micro image array for each frame image information corresponding to the 3D depth ΔZ in the range of viewing angles θ v. Each micro-image array is generated by encoding multiple image elements, for example, 50×30 image elements, and each image element contains a part of 3D image information corresponding to the micro-image array. The sum of the 3D image information contained in each image element above constitutes the complete 3D image information contained in each frame of the micro image array. In an embodiment, the resolution of the image element may be 121×121 pixels, and the overall resolution of the micro image array may be 7680×3840 pixels.
光线调制组件2包括调制孔2-1、透镜镜筒板2-2、透镜阵列2-3,设置于2D图像显示组件1前方,用于调制2D图像显示组件1发出的光线并使该光线在液体散射组件3内再现3D图像。The light modulating component 2 includes a modulating hole 2-1, a lens barrel plate 2-2, and a lens array 2-3, which are arranged in front of the 2D image display component 1, and are used to modulate the light emitted by the 2D image display component 1 and make the light in The 3D image is reproduced in the liquid scattering component 3.
在一个实施例中,透镜阵列2-3,由多个透镜元排列组成,用于对2D图像显示组件1上集成成像片源发出的光线进行调制,在液体散射组件3所在位置再现出3D图像。多个透镜元可以由多片式透镜共轴排列组成,以与调制孔2-1的排列方式对应,例如透镜阵列包含50×30个透镜元,为三片式透镜矩形排列。液体散射组件3设置于光线调制组件2前方,用于再现完整且连续的3D图像并增加3D深度范围。In one embodiment, the lens array 2-3 is composed of a plurality of lens elements arranged to modulate the light emitted by the integrated imaging film source on the 2D image display assembly 1 and reproduce the 3D image at the position of the liquid scattering assembly 3 . The multiple lens elements may be composed of multiple lenses arranged coaxially to correspond to the arrangement of the modulation aperture 2-1. For example, the lens array includes 50×30 lens elements and is a rectangular arrangement of three lenses. The liquid scattering component 3 is arranged in front of the light modulation component 2 for reproducing a complete and continuous 3D image and increasing the 3D depth range.
在一个实施例中,液体散射组件3包括胶体3-1和容器3-2。胶体3-1可以为液态胶体。液态胶体存在丁达尔效应,即,对入射的光线在一定深度范围内进行散射,散射后在3D深度范围ΔZ内再现完整且连续的3D图像。容器3-2用于承接胶体3-1。In one embodiment, the liquid scattering component 3 includes a colloid 3-1 and a container 3-2. The colloid 3-1 may be a liquid colloid. The liquid colloid has the Tyndall effect, that is, it scatters the incident light within a certain depth range, and then reproduces a complete and continuous 3D image within the 3D depth range ΔZ after scattering. The container 3-2 is used to receive the colloid 3-1.
胶体3-1可以是硅酸胶体、氢氧化铝胶体、氢氧化铁胶体、氧化锆胶体、碘化银胶体、蛋白质胶体、淀粉胶体、墨水胶体中的一种。在一个实施例中,胶体3-1可以是蛋白质胶体。The colloid 3-1 may be one of silicic acid colloid, aluminum hydroxide colloid, ferric hydroxide colloid, zirconia colloid, silver iodide colloid, protein colloid, starch colloid, and ink colloid. In one embodiment, the colloid 3-1 may be a protein colloid.
胶体3-1的分散质分子直径d满足公式(1):The molecular diameter d of the dispersoid of colloid 3-1 satisfies formula (1):
1nm≤d≤100nm      (1),1nm≤d≤100nm (1),
例如分散质分子直径d约为20nm。For example, the molecular diameter d of the dispersoid is about 20 nm.
胶体3-1的折射率n满足公式(2):The refractive index n of colloid 3-1 satisfies formula (2):
1.3≤n≤1.9       (2),1.3≤n≤1.9 (2),
例如折射率n为1.42。For example, the refractive index n is 1.42.
胶体3-1厚度h满足公式(3):The thickness h of colloid 3-1 satisfies formula (3):
h≥ΔZ 0      (3), h≥ΔZ 0 (3),
其中,无光学扩散屏情况下集成成像达到的3D深度范围ΔZ 0与以下因素相关:常规透镜阵列8主平面到成像平面的距离L、观看距离内人眼所能分辨的最小距离P I、透镜节距P 0,满足公式(4): Among them, the 3D depth range ΔZ 0 achieved by integrated imaging without an optical diffuser is related to the following factors: the distance L from the main plane of the conventional lens array 8 to the imaging plane, the minimum distance P I that the human eye can distinguish within the viewing distance, and the lens The pitch P 0 satisfies the formula (4):
Figure PCTCN2020139336-appb-000005
Figure PCTCN2020139336-appb-000005
例如常规透镜阵列8主平面到成像平面的距离L可以是150mm,观看距离内人眼所能分辨的最小距离P I可以为1mm,透镜节距P 0可以为12.5mm,可得2D图像显示组件1与常规透镜阵列8形成的集成成像3D深度范围ΔZ 0为24mm。因此,胶体3-1的厚度h可以为30mm。基于光学扩散屏的集成成像3D显示装置3D深度范围约为12mm。 For example, the distance L from the main plane of the conventional lens array 8 to the imaging plane can be 150mm, the minimum distance P I that can be distinguished by the human eye within the viewing distance can be 1mm, and the lens pitch P 0 can be 12.5mm, resulting in a 2D image display module. 1 The integrated imaging 3D depth range ΔZ 0 formed by the conventional lens array 8 is 24 mm. Therefore, the thickness h of the colloid 3-1 may be 30 mm. The 3D depth range of the integrated imaging 3D display device based on the optical diffusion screen is about 12mm.
请参照图3,图3为常规集成成像3D显示装置的3D深度范围的示意图。Please refer to FIG. 3, which is a schematic diagram of the 3D depth range of a conventional integrated imaging 3D display device.
液体散射组件3的中心平面位于透镜阵列2-3的成像平面,常规透镜阵列8主平面到成像平面的距离L与透镜阵列2-3主平面到液体散射组件3中心平面的距离l满足公式(5):The center plane of the liquid scattering component 3 is located on the imaging plane of the lens array 2-3, the distance L from the main plane of the conventional lens array 8 to the imaging plane and the distance l from the main plane of the lens array 2-3 to the center plane of the liquid scattering component 3 satisfy the formula ( 5):
L=l      (5),L=l (5),
例如透镜阵列主平面到成像平面的距离L可以为150mm,透镜阵列主平面到液体散射组件中心平面的距离l可以为150mm。For example, the distance L from the main plane of the lens array to the imaging plane can be 150 mm, and the distance l from the main plane of the lens array to the center plane of the liquid scattering component can be 150 mm.
在一个实施例中,2D图像显示组件1到透镜阵列2-3主平面的距离g,透镜阵列2-3主平面到液体散射组件3中心平面的距离l与透镜阵列2-3中透镜元 的焦距f在集成成像实模式下满足公式(6):In one embodiment, the distance g from the 2D image display component 1 to the main plane of the lens array 2-3, the distance l from the main plane of the lens array 2-3 to the central plane of the liquid scattering component 3 and the distance between the lens elements in the lens array 2-3 The focal length f satisfies formula (6) in the integrated imaging real mode:
Figure PCTCN2020139336-appb-000006
Figure PCTCN2020139336-appb-000006
例如,2D图像显示组件到透镜阵列主平面的距离g可以为14.8mm,透镜阵列主平面到液体散射组件中心平面的距离l可以为150mm,透镜阵列中透镜元的焦距f可以为13.5mm。For example, the distance g from the 2D image display component to the main plane of the lens array can be 14.8 mm, the distance l from the main plane of the lens array to the central plane of the liquid scattering component can be 150 mm, and the focal length f of the lens elements in the lens array can be 13.5 mm.
请参照图4,图4为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的3D深度范围的示意图。在一个实施例中,由显示在2D图像显示组件1上的所述集成成像片源所发出的光线经由光线调制组件2调制,入射光线6再通过液体散射组件3后,出射光线7从液体散射组件3中出射,反向延长可得出射光线的反向延长线8,3D图像在深度范围ΔZ内可视,其中3D深度范围ΔZ与以下因素相关:观看距离内人眼所能分辨的最小距离P I、液体散射组件3散射角度θ、透镜节距P 0、透镜阵列2-3主平面到液体散射组件3中心平面的距离l相关,满足公式(7): Please refer to FIG. 4, which is a schematic diagram of a 3D depth range of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application. In one embodiment, the light emitted by the integrated imaging film source displayed on the 2D image display assembly 1 is modulated by the light modulation assembly 2. After the incident light 6 passes through the liquid scattering assembly 3, the outgoing light 7 is scattered from the liquid. The component 3 is emitted, and the reverse extension can give the reverse extension line of the emitted light 8. The 3D image is visible in the depth range ΔZ, where the 3D depth range ΔZ is related to the following factors: the minimum distance that the human eye can distinguish within the viewing distance P I , the scattering angle θ of the liquid scattering component 3, the lens pitch P 0 , and the distance l from the main plane of the lens array 2-3 to the center plane of the liquid scattering component 3 are related, and satisfy the formula (7):
Figure PCTCN2020139336-appb-000007
Figure PCTCN2020139336-appb-000007
例如,观看距离内人眼所能分辨的最小距离P I为1mm,液体散射组件散射角度θ为2°,透镜节距P 0为12.5mm,透镜阵列主平面到液体散射组件中心平面的距离l为150mm,通过公式(7)可以计算出深度范围ΔZ为19mm。 For example, the minimum distance P I that the human eye can distinguish within the viewing distance is 1 mm, the scattering angle θ of the liquid scattering component is 2°, the lens pitch P 0 is 12.5 mm, and the distance from the principal plane of the lens array to the center plane of the liquid scattering component is l It is 150mm, and the depth range ΔZ can be calculated as 19mm by formula (7).
请参照图5,图5为根据本申请一实施例的基于液体散射层的集成成像3D显示装置的视角原理的示意图。在一个实施例中,由显示在所述2D图像显示组件1上的所述集成成像片源所发出的光线经由光线调制组件2调制,入射光线6再通过液体散射组件3后,出射光线7从液体散射组件3中出射,反向延长可得出射光线的反向延长线8,3D图像在视角θ v内可视。其中,所述视角θ v与2D图像显示组件1到透镜阵列2-3主平面的距离g、单个调制孔2-1的内径a相关, 满足公式(8): Please refer to FIG. 5, which is a schematic diagram of the viewing angle principle of an integrated imaging 3D display device based on a liquid scattering layer according to an embodiment of the present application. In one embodiment, the light emitted by the integrated imaging film source displayed on the 2D image display assembly 1 is modulated by the light modulation assembly 2. After the incident light 6 passes through the liquid scattering assembly 3, the outgoing light 7 is The liquid scattering component 3 exits, and the reverse extension can give the reverse extension line 8 of the emitted light, and the 3D image is visible within the viewing angle θ v. Wherein, the viewing angle θ v is related to the distance g from the 2D image display component 1 to the main plane of the lens array 2-3 and the inner diameter a of the single modulation hole 2-1, and satisfies the formula (8):
Figure PCTCN2020139336-appb-000008
Figure PCTCN2020139336-appb-000008
例如,2D图像显示组件1到透镜阵列2-3主平面的距离g为14.8mm,单个调制孔2-1的内径a为11.5mm,视角范围θ v为42.4°。 For example, the distance g from the 2D image display component 1 to the main plane of the lens array 2-3 is 14.8 mm, the inner diameter a of the single modulation hole 2-1 is 11.5 mm, and the viewing angle range θ v is 42.4°.
在一个实施例中,调制孔2-1的高度b与2D图像显示组件1到透镜阵列2-3主平面的距离g还满足公式(9):In an embodiment, the height b of the modulation hole 2-1 and the distance g from the 2D image display component 1 to the main plane of the lens array 2-3 also satisfy the formula (9):
b≤g      (9),b≤g (9),
例如,调制孔2-1的高度b为6mm,2D图像显示组件1到所述透镜阵列主平面的距离g为14.8mm。For example, the height b of the modulation hole 2-1 is 6 mm, and the distance g from the 2D image display assembly 1 to the main plane of the lens array is 14.8 mm.
本申请所提出的基于液体散射层的集成成像3D显示装置,利用在2D图像显示组件中由集成成像片源发出光线,并通过光线调制组件对光线进行调制,从而在液体散射组件的目标显示空间区域内再现3D图像,实现集成成像3D显示。与基于光学扩散屏的集成成像3D显示装置相比,具有更大的3D深度范围。此外,能够使再现的3D图像的各个深度平面都能够清晰显示。该显示装置光线调制组件中的调制孔还消除了再现3D图像的串扰,优化了集成成像3D显示效果。The integrated imaging 3D display device based on the liquid scattering layer proposed in this application utilizes the light emitted by the integrated imaging sheet source in the 2D image display assembly, and the light is modulated by the light modulation assembly, so as to display the space in the target display space of the liquid scattering assembly. 3D images are reproduced in the area to realize integrated imaging 3D display. Compared with an integrated imaging 3D display device based on an optical diffuser, it has a larger 3D depth range. In addition, each depth plane of the reproduced 3D image can be clearly displayed. The modulation hole in the light modulation component of the display device also eliminates the crosstalk of reproducing 3D images, and optimizes the integrated imaging 3D display effect.
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述。然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。The various technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, it should be regarded as the scope described in this specification.
以上所述实施例仅表达了本申请的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对申请专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本申请构思的前提下,还可以做出若干变形和改进,这些都属于本申请的保护范围。因此,本申请专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation manners of the present application, and their description is relatively specific and detailed, but they should not be interpreted as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims (6)

  1. 一种基于液体散射层的集成成像3D显示装置,其中,所述显示装置包括:An integrated imaging 3D display device based on a liquid scattering layer, wherein the display device includes:
    2D图像显示组件,用于接收并显示微图像阵列,并且发出光线;The 2D image display component is used to receive and display the micro image array and emit light;
    光线调制组件,设置于所述2D图像显示组件前方,用于调制所述2D图像显示组件所发出的光线,并使所述光线在液体散射组件内再现3D图像;A light modulation component, arranged in front of the 2D image display component, for modulating the light emitted by the 2D image display component, and causing the light to reproduce a 3D image in the liquid scattering component;
    所述液体散射组件,设置于所述光线调制组件前方,用于对经所述光线调制组件调制后的光线进行散射,在所述液体散射组件内再现连续的3D图像,提升集成成像3D深度范围。The liquid scattering component is arranged in front of the light modulation component, and is used to scatter the light modulated by the light modulation component, reproduce continuous 3D images in the liquid scattering component, and improve the integrated imaging 3D depth range .
  2. 根据权利要求1所述的集成成像3D显示装置,其中,所述液体散射组件包括液体散射层和容器,所述容器用于承接所述液体散射层,所述液体散射层为胶体。The integrated imaging 3D display device according to claim 1, wherein the liquid scattering component comprises a liquid scattering layer and a container, the container is configured to receive the liquid scattering layer, and the liquid scattering layer is a colloid.
  3. 根据权利要求2所述的集成成像3D显示装置,其中,所述胶体是硅酸胶体、氢氧化铝胶体、氢氧化铁胶体、氧化锆胶体、碘化银胶体、蛋白质胶体、淀粉胶体、墨水胶体中的一种。The integrated imaging 3D display device according to claim 2, wherein the colloid is one of silicic acid colloid, aluminum hydroxide colloid, ferric hydroxide colloid, zirconia colloid, silver iodide colloid, protein colloid, starch colloid, and ink colloid. One kind.
  4. 根据权利要求2所述的集成成像3D显示装置,其中,所述胶体的分散质分子直径d满足:1nm≤d≤100nm。The integrated imaging 3D display device according to claim 2, wherein the dispersoid molecular diameter d of the colloid satisfies: 1nm≤d≤100nm.
  5. 根据权利要求2所述的集成成像3D显示装置,其中,所述胶体的折射率n满足:1.3≤n≤1.9。The integrated imaging 3D display device according to claim 2, wherein the refractive index n of the colloid satisfies: 1.3≤n≤1.9.
  6. 根据权利要求2所述的集成成像3D显示装置,其中,所述胶体的厚度不小于无光学扩散屏的情况下所述集成成像3D深度范围。The integrated imaging 3D display device according to claim 2, wherein the thickness of the colloid is not less than the 3D depth range of the integrated imaging without an optical diffusion screen.
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CN108919502A (en) * 2018-08-03 2018-11-30 北京航空航天大学 A kind of integration imaging double vision 3D display device based on optics diffuser screen
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CN110941101A (en) * 2019-12-27 2020-03-31 北京航空航天大学 Integrated imaging 3D display device based on liquid scattering layer

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