A three-dimensional display light box

Abstract

The present invention proposes a three-dimensional display light box. The three-dimensional display light box is composed of a light source array, a light box shell, a cylindrical lens grating, a scattering layer and a printed parallax synthetic image; the light source array is placed in the light box shell, and the light emitted by the light source array can be focused by the cylindrical lens grating and projected onto the scattering layer, and form a series of bright stripes on the scattering layer; the bright stripes on the scattering layer can project the parallax images on the printed parallax synthetic image to different positions, thereby forming viewpoints; when the human eye is at different viewpoint positions, the corresponding parallax images can be seen, thereby generating three-dimensional vision. The printed parallax synthetic image is printed on a transparent flexible film, and is pressed and fixed to the light box shell with a transparent flat plate. When the display content needs to be changed, it is only necessary to open the transparent flat plate and replace the printed transparent flexible film, which is convenient for replacing the display content.

Description

Technical Field

[0001] The present invention relates to optical technology, and more particularly to grating stereoscopic display technology. Background Art

[0002] Generally, three-dimensional display printed products are formed by the precise coupling of printed parallax synthetic images and grating elements. Some printed products are prepared by directly printing the parallax synthetic images on the grating elements, and other printed products are prepared by pasting the printed grating elements on the grating elements. In these printed products, the parallax synthetic images and the grating elements form an inseparable whole. When the display content needs to be replaced, the grating elements are difficult to reuse. The present invention proposes a three-dimensional display light box, in which the parallax image and the grating element are separated. When the display content needs to be replaced, only the printed parallax synthetic image needs to be replaced, which is convenient for promotion and use in industries such as light box advertising. Summary of the invention

[0003] The present invention provides a three-dimensional display light box. Figure 1 The 3D display light box is composed of a light source array, a light box housing, a cylindrical lens grating, a scattering layer and a printed parallax composite image.

[0004] The light source array, the cylindrical lens grating, the scattering layer and the printed parallax synthetic image are placed in sequence. The cylindrical lens grating is placed in front of the light source array, the scattering layer is placed in front of the cylindrical lens grating, and the printed parallax synthetic image is placed in front of the scattering layer.

[0005] Please refer to Figure 1 The light source array is placed in the light box housing. An opening is provided on one side of the light box housing to allow light to be emitted from the opening.

[0006] Preferably, the light box housing is made of opaque material, and its inner surface is coated with light-absorbing material to reduce light reflection.

[0007] For further information, please refer to Figure 1 , the light emitted by the light source array can be focused by the cylindrical lens grating and projected onto the scattering layer, forming a series of bright stripes on the scattering layer. Due to the scattering effect of the scattering layer, the light of the bright stripes can be further scattered to all directions in space.

[0008] Specifically, suppose the pitch of the light source array in the horizontal direction is w , the distance from the light source array to the cylindrical lens grating is d , the distance from the cylindrical lens grating to the scattering layer is l , the cylindrical lens grating pitch is p , then the above parameters satisfy: .

[0009] Preferably, please refer to Figure 1 The cylindrical lens grating is placed in the light box shell, and the scattering layer is placed at the position of the opening surface of the light box shell.

[0010] For further information, please refer to Figure 1 The bright stripes on the scattering layer can be used as a rear slit grating to project pixels from different parallax images on the printed parallax composite image to different positions, thereby forming viewpoints. When the human eye is at different viewpoints, it can see the corresponding parallax images, thereby generating stereoscopic vision.

[0011] Preferably, the printed parallax composite image is printed on a transparent flexible film and fixed in front of the light box housing with a transparent flat plate for easy replacement. Positioning holes are provided on the transparent flexible film and the transparent flat plate to facilitate alignment of the printed parallax composite image and the bright stripes during replacement.

[0012] In the present invention, since the printed parallax synthetic image is no longer directly printed on the grating element, nor is it fixed on the grating element by pasting, it is directly printed by a transparent flexible film and fixed by pressing with a transparent flat plate. When the display content needs to be replaced, it is only necessary to open the transparent flat plate and replace the printed transparent flexible film, which facilitates the replacement of the display content. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Icon: 100 - light source array; 200 - light box shell; 300 - cylindrical lens grating; 400 - scattering layer; 500 - printed parallax synthetic image, 501 - first transparent plate, 502 - second transparent plate.

[0016] It should be understood that the above drawings are only schematic and are not drawn to scale. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] Example 1

[0022] Figure 1 The 3D display light box is a schematic structural diagram of the present embodiment. The 3D display light box is composed of a light source array 100, a light box housing 200, a cylindrical lens grating 300, a scattering layer 400 and a printed parallax composite image 500.

[0023] The light source array 100, the cylindrical lens grating 300, the scattering layer 400 and the printed parallax synthetic image 500 are placed in sequence. The cylindrical lens grating 300 is placed in front of the light source array 100, the scattering layer 400 is placed in front of the cylindrical lens grating 300, and the printed parallax synthetic image 500 is placed in front of the scattering layer 400.

[0024] Please refer to Figure 1 The light source array 100 is composed of LED light sources, which are placed in a light box housing 200 in a two-dimensional array. An opening is provided on one side of the light box housing 200 to allow light to be emitted from the opening.

[0025] The light box housing 200 is made of a steel plate, and its inner surface is coated with a black light-absorbing material to reduce light reflection.

[0026] For further information, please refer to Figure 1 The scattering layer is prepared by a two-dimensional lens array with a pitch of 0.01485 mm to obtain higher optical efficiency. The light emitted by the light source array 100 can be focused by the cylindrical lens grating 300 and projected onto the scattering layer 400, and a series of bright stripes are formed on the scattering layer 400. Due to the scattering effect of the scattering layer 400, the light of the bright stripes can be further scattered to all directions in space.

[0027] Specifically, the horizontal pitch of the light source array 100 is wis 50.8 mm, the distance from the light source array 100 to the cylindrical lens grating 300 d The distance from the cylindrical lens grating 300 to the scattering layer 400 is 95 mm. l 5 mm, cylindrical lens grating 300 pitch p is 2.54 mm, and the above parameters meet: .

[0028] Please refer to Figure 1 The cylindrical lens grating 300 is placed in the light box housing 200, and the scattering layer 400 is placed at the position of the opening surface of the light box housing to reduce the interference of ambient light.

[0029] For further information, please refer to Figure 1 The bright stripes on the scattering layer 400 can be used as a rear slit grating to project pixels from different parallax images on the printed parallax composite image 500 to different positions, thereby forming viewpoints. When the human eyes are at different viewpoints, they can see the corresponding parallax images, thereby generating stereoscopic vision.

[0030] The printed parallax synthetic image 500 is printed on a transparent flexible film, and is pressed and fixed in front of the light box housing by a first transparent flat plate 501 and a second transparent flat plate 502 for easy replacement. The first transparent flat plate 501 and the second transparent flat plate 502 are made of organic glass material. Positioning holes are drilled on the transparent flexible film and the first transparent flat plate 501 and the second transparent flat plate 502, which can align the printed parallax synthetic image 500 with the bright stripes through positioning screws. Specifically, the first transparent flat plate 501 is fixed on the light box housing 200, and its positioning hole is fixed relative to the position of the bright stripes. When the positioning hole on the transparent flexible film is aligned with the positioning hole on the first transparent flat plate 501, the parallax synthetic image 500 and the bright stripes can be aligned.

[0031] In the present invention, since the printed parallax composite image 500 is no longer directly printed on the grating element, nor is it fixed on the grating element by pasting, it is directly printed by a transparent flexible film and is pressed and fixed by the first transparent flat plate 501 and the second transparent flat plate 502. When the display content needs to be replaced, it is only necessary to open the second transparent flat plate 502 and replace the printed transparent flexible film, which facilitates the replacement of the display content.

Claims

1. A three-dimensional display light box, characterized in that: The stereoscopic display light box is composed of a light source array, a light box shell, a cylindrical lens grating, a scattering layer and a printed parallax synthetic image; the light source array, the cylindrical lens grating, the scattering layer and the printed parallax synthetic image are placed in sequence; the cylindrical lens grating is placed in front of the light source array, the scattering layer is placed in front of the cylindrical lens grating, and the printed parallax synthetic image is placed in front of the scattering layer; the light source array is placed in the light box shell, and an opening is provided on one side of the light box shell to allow light to be emitted from the opening; the light emitted by the light source array is focused by the cylindrical lens grating and then projected onto the scattering layer, and a series of bright stripes are formed on the scattering layer; due to the scattering effect of the scattering layer, the light of the bright stripes is further scattered to all directions in space; the bright stripes on the scattering layer act as a rear slit grating to project pixels from different parallax images on the printed parallax synthetic image to different positions, thereby forming viewpoints; when the human eye is at different viewpoint positions, it sees the corresponding parallax images, thereby generating stereoscopic vision; assuming that the pitch of the light source array in the horizontal direction is w , the distance from the light source array to the cylindrical lens grating is d , the distance from the cylindrical lens grating to the scattering layer is l , the cylindrical lens grating pitch is p , then the above parameters satisfy: ; The printed parallax composite image is printed on a transparent flexible film, and is pressed and fixed in front of a light box housing by a first transparent flat plate and a second transparent flat plate; positioning holes are drilled on the transparent flexible film, the first transparent flat plate and the second transparent flat plate, and the printed parallax composite image and the bright stripes are aligned by positioning screws.

2. A three-dimensional display light box as claimed in claim 1, characterized in that: The light box shell is made of opaque material, and its inner surface is coated with light-absorbing material to reduce light reflection.

3. A three-dimensional display light box as claimed in claim 1, characterized in that: The cylindrical lens grating is placed in the light box shell, and the scattering layer is placed at the position where the opening surface of the light box shell is located.

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