CN109283693B - Light field stereoscopic display device based on light-emitting diode packaging unit - Google Patents
Light field stereoscopic display device based on light-emitting diode packaging unit Download PDFInfo
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- CN109283693B CN109283693B CN201811486632.8A CN201811486632A CN109283693B CN 109283693 B CN109283693 B CN 109283693B CN 201811486632 A CN201811486632 A CN 201811486632A CN 109283693 B CN109283693 B CN 109283693B
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- cylindrical lens
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 61
- 230000008447 perception Effects 0.000 claims abstract description 6
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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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
- G02B30/20—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
Abstract
The invention provides a light field stereoscopic display device based on a light-emitting diode packaging unit. The light field stereoscopic display device based on the light-emitting diode packaging units is formed by combining a plurality of light-emitting diode packaging units into an array. The LED packaging unit consists of a base, a plurality of LEDs, a first cylindrical lens, a scattering layer, a second cylindrical lens and a packaging shell, and different LEDs in the LED packaging unit can be projected to different space directions, so that the emergent conditions of light rays at corresponding positions in a three-dimensional space in different directions are simulated, and an array formed by the LED packaging unit can form a light field for three-dimensional display. When the human eye is at different positions in the light field, light rays corresponding to the positions thereof can be seen, so that parallax can be formed and stereoscopic perception can be generated.
Description
Technical Field
The present invention relates to display technology, and more particularly, to light field stereoscopic display technology.
Background
The 3D display technology is a display technology that can realize real reproduction of stereoscopic scenes, which can respectively provide different parallax images for human eyes, thereby enabling a person to generate stereoscopic vision. It typically uses a slit grating, a cylindrical lens as a light splitting element to project the pixels in a specified direction. When the human eyes are at different positions, the parallax images corresponding to the human eyes can be seen, so that stereoscopic vision is realized. In the conventional stereoscopic display device, a 2D display panel is often used to provide a parallax composite image when stereoscopic display is implemented. Since it is difficult to realize large-sized display of the conventional 2D display panel such as a liquid crystal display panel, an OLED display panel, etc., the present invention proposes a light field stereoscopic display device based on a light emitting diode package unit.
Disclosure of Invention
The invention provides a light field stereoscopic display device based on a light-emitting diode packaging unit. Fig. 1 is a schematic structural diagram of the light field stereoscopic display device based on the light emitting diode packaging unit. The light field stereoscopic display device based on the light-emitting diode packaging units is formed by combining a plurality of light-emitting diode packaging units into an array. The LED packaging unit consists of a base, a plurality of LEDs, a first cylindrical lens, a scattering layer, a second cylindrical lens and a packaging shell, and different LEDs in the LED packaging unit can be projected to different space directions, so that the emergent conditions of light rays at corresponding positions in a three-dimensional space in different directions are simulated, and an array formed by the LED packaging unit can form a light field for three-dimensional display. When the human eye is at different positions in the light field, light rays corresponding to the positions thereof can be seen, so that parallax can be formed and stereoscopic perception can be generated.
The principle is understood to mean that a transparent plate is arranged in any stereoscopic space scene, which transparent plate is arranged between the stereoscopic scene and the viewer. The viewer can see the stereoscopic image of the spatial scene through the tablet. At any point on the transparent plate, light from the stereoscopic space scene behind it passes through, through which the human eye can see the stereoscopic scene behind it. When the positions of human eyes are different, pixel points in the stereoscopic space scene seen through the point are not the same, namely, rays emitted in different directions by the point of the stereoscopic space scene are different. The LED packaging unit in the light field stereoscopic display device based on the LED packaging unit can provide different emergent rays in different directions, and the property of the LED packaging unit is the same as any point on the transparent flat plate. Therefore, when the light emitting diode packaging units are combined into an array, a light field of a corresponding stereoscopic space scene can be formed, so that stereoscopic display is realized.
The light-emitting diode packaging unit consists of a base, a plurality of light-emitting diodes, a first cylindrical lens, a scattering layer, a second cylindrical lens and a packaging shell. The base is provided with a plurality of light emitting diodes. The light emitting diodes have different horizontal positions, so that the light emitted by the light emitting diodes can be projected to the different horizontal positions on the scattering layer through the first cylindrical lens. The scattering layer may scatter light forward. Light from different LEDs can be projected to different horizontal space directions through the second lens after being scattered by the scattering layer due to different horizontal positions imaged on the scattering layer. The packaging shell surrounds the light emitting diode, the first cylindrical lens, the scattering layer and the second cylindrical lens, but leaves a path of light rays emitted from the second cylindrical lens, and is used for protecting and fixing the light emitting diode, the first cylindrical lens, the scattering layer and the second cylindrical lens, and light absorption materials are coated on the packaging shell to reduce light interference among different light emitting diodes.
Setting the focal length of the first cylindrical lens of the LED packaging unit asfThe distance from each LED to the first cylindrical lens isl 1 The distance from the first cylindrical lens to the scattering layer isl 2 . PreferablyThe above parameters should, in turn, satisfy:，/>. Due to->The light emitting diodes can be reduced to be imaged at the positions of the scattering layers, and the ratio of the width of the light emitting diodes in the horizontal direction to the original width of the light emitting diodes in the horizontal direction is +/according to the principle of similar triangle>. On the scattering layer, the horizontal spacing of the image of each light emitting diode is smaller than the actual horizontal spacing of each light emitting diode, so that the volume of the light emitting diode packaging unit is convenient to reduce.
Optionally, an additional second lens may be provided to project light into more directions.
Alternatively, the first cylindrical lens may be replaced with a slit.
Alternatively, the second cylindrical lens may be replaced with a slit.
Alternatively, the first cylindrical lens may be replaced with a lens.
Alternatively, the second cylindrical lens may be replaced with a lens.
According to the light field stereoscopic display device based on the light-emitting diode packaging unit, different light-emitting diodes in the light-emitting diode packaging unit can be projected to different space directions, so that the emergent conditions of light rays at corresponding positions in different directions in a stereoscopic space can be simulated, and an array formed by the light-emitting diode packaging unit can form a light field for stereoscopic display. The stereoscopic light field can see the light rays corresponding to the positions of the human eyes when the human eyes are positioned at different positions in the light field, so that parallax can be formed and stereoscopic perception can be generated. The light field stereoscopic display device based on the light-emitting diode packaging unit is prepared by periodically expanding the light-emitting diode packaging unit in space, so that large-size stereoscopic display is convenient to realize. In addition, due to the two-layer cylindrical lens light splitting structure in the light emitting diode packaging unit, the overall thickness of the device is easy to control.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of a light emitting diode package unit according to the present invention.
Icon: 010-a light field stereoscopic display device based on a light emitting diode packaging unit; 100-a light emitting diode packaging unit; 110-a substrate; 121-light emitting diode one; 122-light emitting diode two; 123-light emitting diode three; 124-light emitting diode four; 125-light emitting diode five; 126-light emitting diode six; 130-packaging the shell; 140-a first cylindrical lens; 150-a scattering layer; 160-a second cylindrical lens; 170-an additional second cylindrical lens.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In describing embodiments of the present invention, it should be noted that the terms "first," "second," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Examples
Fig. 1 is a schematic structural diagram of a light field stereoscopic display device 010 based on a light emitting diode package unit according to the present embodiment, in which x-coordinate represents a horizontal direction in space, y-coordinate represents a vertical direction in space, and z-direction represents an axial direction perpendicular to an x-y plane. Referring to fig. 1, the light field stereoscopic display device 010 based on light emitting diode packaging units is formed by combining a plurality of light emitting diode packaging units 100 into an array. The led package unit 100 can project light from different leds in different spatial directions, so as to simulate the light emission situation of the corresponding position in the stereoscopic space in different directions, and thus the array formed by the light emission situation can form a light field for stereoscopic display. When the human eye is at different positions in the light field, light rays corresponding to the positions thereof can be seen, so that parallax can be formed and stereoscopic perception can be generated.
The principle is understood to mean that a transparent plate is arranged in any stereoscopic space scene, which transparent plate is arranged between the stereoscopic scene and the viewer. The viewer can see the stereoscopic image of the spatial scene through the tablet. At any point on the transparent plate, light from the stereoscopic space scene behind it passes through, through which the human eye can see the stereoscopic scene behind it. When the positions of human eyes are different, pixel points in the stereoscopic space scene seen through the point are not the same, namely, rays emitted in different directions by the point of the stereoscopic space scene are different. The light emitting diode packaging unit 100 in the light field stereoscopic display device 010 based on the light emitting diode packaging unit can provide different emergent rays in different directions, and the property of the light emitting diode packaging unit is the same as any point on the transparent flat plate. Therefore, when the light emitting diode packaging units 100 are combined into an array, a light field of a corresponding stereoscopic space scene can be formed, thereby realizing stereoscopic display.
The light field stereoscopic display device 010 based on the light emitting diode packaging unit provided in this embodiment is further described below.
Fig. 2 is a schematic diagram of a light emitting diode package unit according to the present invention. Referring to fig. 2, the led package unit 100 includes a base 110, a plurality of leds 121-126, a first cylindrical lens 140, a scattering layer 150, a second cylindrical lens 160, and a package housing 130. The base is provided with a plurality of light emitting diodes 121-126. The light emitting diodes 121 to 126 have different horizontal positions, so that the light emitted by the light emitting diodes 121 to 126 can be projected to the different horizontal positions on the scattering layer 150 through the first cylindrical lens 140. The scattering layer 150 is formed of a lenticular lens grating having a small pitch and focal length, and can scatter light forward. The light from the different leds 121 to 126 is scattered by the scattering layer 150 due to different horizontal positions imaged on the scattering layer 150, and then the light is projected to different horizontal spatial directions through the second lens 160. The package housing 130 is cylindrical in space, surrounds the light emitting diodes 121-126, the first cylindrical lens 140, the scattering layer 150 and the second cylindrical lens 160, but leaves a path for light emitted from the second cylindrical lens 160, which is used for protecting and fixing the light emitting diodes 121-126, the first cylindrical lens 140, the scattering layer 150 and the second cylindrical lens 160, and is coated with a light absorbing material for reducing light interference among different light emitting diodes 121-126.
Set the focal length of the first cylindrical lens 140 of the led package unit 100f4.5455 mm, the distance from each LED 121-126 to the first cylindrical lens 140l 1 50 to mm, first cylindrical lenses 140 toDistance of scattering layer 150l 2 5 mm. The above parameters satisfy:，/>. Due to->The light emitting diodes 121-126 can be reduced in the area of the scattering layer 150, and the ratio of the width of the light emitting diodes 121-126 in the horizontal direction to the original width of the light emitting diodes 121-126 in the horizontal direction should be 1/10 based on the principle of similar triangle. On the scattering layer 150, the horizontal spacing of the images of the light emitting diodes 121 to 126 is smaller than the actual horizontal spacing of the light emitting diodes 121 to 126, so that the volume of the light emitting diode package unit 100 is reduced.
According to the light field stereoscopic display device 010 based on the light emitting diode packaging unit, as different 6 light emitting diodes 121-126 in the light emitting diode packaging unit 100 can be projected to different space directions, the emergent conditions of light rays at corresponding positions in different directions in a stereoscopic space can be simulated, and therefore an array formed by the light field stereoscopic display device 010 can form a light field for stereoscopic display. When the human eye is at different positions in the light field, light rays corresponding to the positions thereof can be seen, so that parallax can be formed and stereoscopic perception can be generated. The light field stereoscopic display device 010 based on the light emitting diode packaging unit is prepared by periodically expanding the light emitting diode packaging unit 100 in space, so that large-size stereoscopic display is convenient to realize. In addition, due to the two-layer lenticular light splitting structure in the light emitting diode package unit 100, the overall thickness of the device is easy to control.
Claims (6)
1. The utility model provides a light field stereoscopic display device based on emitting diode encapsulation unit which characterized in that: the light field stereoscopic display device based on the LED packaging units consists of a large number of LED packaging unitsThe array combination is formed, the light-emitting diode packaging unit consists of a base, a plurality of light-emitting diodes, a first cylindrical lens, a scattering layer, a second cylindrical lens and a packaging shell, different light-emitting diodes in the light-emitting diode packaging unit can be projected to different space directions, so that the emergent condition of light rays at corresponding positions in a three-dimensional space in different directions is simulated, therefore, the array formed by the light-emitting diode packaging unit can form a light field for three-dimensional display, when eyes are positioned at different positions in the light field, the light rays corresponding to the positions can be seen, and parallax can be formed and three-dimensional perception can be generated; the base of the light-emitting diode packaging unit is provided with a plurality of light-emitting diodes, the light emitted by the light-emitting diodes with different levels can be projected to different levels on the scattering layer through the first cylindrical lens, the scattering layer can scatter light forwards, and after the light from the light-emitting diodes is scattered by the scattering layer, the light can be projected to different horizontal space directions through the second cylindrical lens; light rays emitted by the same light emitting diode in each light emitting diode packaging unit are parallel to each other; setting the focal length of the first cylindrical lens of the LED packaging unit asfThe distance from each LED to the first cylindrical lens isl 1 The distance from the first cylindrical lens to the scattering layer isl 2 The above parameters satisfy:，/>。
2. the light field stereoscopic display device based on the light emitting diode packaging unit according to claim 1, wherein: an additional second lens is provided to project light into more directions.
3. The light field stereoscopic display device based on the light emitting diode packaging unit according to claim 1, wherein: the first cylindrical lens is replaced with a slit.
4. The light field stereoscopic display device based on the light emitting diode packaging unit according to claim 1, wherein: the second cylindrical lens is replaced with a slit.
5. The light field stereoscopic display device based on the light emitting diode packaging unit according to claim 1, wherein: the first cylindrical lens is replaced with a lens.
6. The light field stereoscopic display device based on the light emitting diode packaging unit according to claim 1, wherein: the second cylindrical lens is replaced with a lens.
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| CN201811486632.8A CN109283693B (en) | 2018-12-06 | 2018-12-06 | Light field stereoscopic display device based on light-emitting diode packaging unit |
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| CN109283693B true CN109283693B (en) | 2023-11-24 |
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