CN110879478B - Integrated imaging 3D display device based on compound lens array - Google Patents
Integrated imaging 3D display device based on compound lens array Download PDFInfo
- Publication number
- CN110879478B CN110879478B CN201911187730.6A CN201911187730A CN110879478B CN 110879478 B CN110879478 B CN 110879478B CN 201911187730 A CN201911187730 A CN 201911187730A CN 110879478 B CN110879478 B CN 110879478B
- Authority
- CN
- China
- Prior art keywords
- mask plate
- lens array
- array
- image
- control mask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses an integrated imaging 3D display device based on a composite lens array. The electric control mask plate can realize two states, and different areas of the electric control mask plate are controlled to be in full black and transparent states respectively, so that light can be controlled to pass through and be shielded in different areas; the compound lens array is used for modulating light rays emitted by the micro image array on the display and reconstructing a 3D image on two planes with different central depths; the synchronous controller is used for controlling the micro-image array switching on the display to be synchronous with the electric control mask plate switching; based on the persistence of vision effect of human eyes, an observer can visually see the 3D images on the two central depth planes simultaneously, and the depth-of-field enhanced integrated imaging 3D display is realized.
Description
One, the technical field
The invention relates to the technical field of three-dimensional display, in particular to an integrated imaging three-dimensional display device based on a compound lens array.
Second, background Art
An integrated imaging 3D display technology belongs to a true 3D display technology, 3D information of a three-dimensional scene at different angles is recorded by utilizing a micro-lens array, a 3D image of the three-dimensional scene is reproduced by using the micro-lens array with the same parameters as the recorded parameters, and the 3D image with the same information such as color, depth and the like as the original three-dimensional scene is reproduced according to a light reversible principle. The integrated imaging 3D display has the advantages of naked eye viewing, true 3D reproduction, invisible fatigue, correct depth cue, quasi-continuous viewing viewpoint and the like.
The 3D image reconstructed by the integrated imaging system is located on different depth planes, each depth plane is composed of a plurality of spatial pixels, and the spatial pixels are formed by a plurality of pixels on a display together after being modulated by corresponding lens elements. Light rays emitted by pixels on the display are refracted by the micro lens array and then focused to form intersection points, and a plane where the intersection points are located is called a central depth plane, namely a plane formed by minimum space pixels. The resolution of the image formed on the central depth plane is the highest, when the image is far away from the central depth plane, the voxels of the 3D image gradually diffuse, when the diameter of the pixel diffuses to be larger than the minimum resolution distance of the human eye, the 3D image observed by the human eye is not clear, the distance between two depth planes when the diameter of the spatial pixel is equal to the minimum resolution distance of the human eye is defined as the depth of field of the integrated imaging display system, and the depth of field of the reproduced 3D image is limited to be within a smaller range near the central depth plane because the traditional integrated imaging 3D display system only has one central depth plane.
In order to increase the depth of field of a 3D image, typical technologies proposed at present include a vibration lens array method, a variable focus lens array method, and a dual-display screen method, and the core of the three methods is to increase the depth of field of the 3D image by increasing the number of central depth planes. The vibrating lens array method needs to adopt a vibrating lens array technology and requires synchronous vibration of the micro image array and the lens array, so that the precision requirement on a mechanical process is very high, and the realization difficulty is high; the variable-focus lens array method changes the effective refractive index of liquid crystal by controlling voltage so as to change the focal length of a lens element, and has the problems of complex manufacturing process, higher manufacturing cost, smaller electrically-controlled zooming range, larger size of formed focus light spots, difficulty in manufacturing large area arrays and the like at present; in the dual-panel method, since the transmittance of the transmissive display panel is only 50% and the emissive display is shielded, the brightness of the whole system is low, and the display effect is not ideal.
Third, the invention
The invention provides an integrated imaging 3D display device based on a compound lens array, which is composed of a synchronous controller, a display, an electric control mask plate, the compound lens array and a diffusion screen as shown in figure 1.
The synchronous controller generates a synchronous timing signal for controlling the synchronous switching of the micro-image array and the electric control mask plate displayed on the display.
The display is used for displaying an integrated imaging film source, namely an integrated imaging micro-image array.
As shown in fig. 2, a subunit of the electronic control mask plate is composed of A, B two areas, the side length of the subunit of the electronic control mask plate is equal to the diameter of a large-aperture lens in the compound lens array, and the diameter of the area B is equal to the diameter of a small-aperture lens in the compound lens array. The electric control mask plate can realize two states, as shown in the attached figures 3 and 4, in the state 1, all areas A of the electric control mask plate subunits are completely black, light is shielded, and all areas B of the electric control mask plate subunits are transparent, so that the light can penetrate through; and in the state 2, the areas B of all the subunits of the electric control mask plate are completely black, so that light is shielded, and the areas A of all the subunits are transparent so that the light can penetrate through. The electric control mask plate has three placing modes as shown in the attached figures 5-7: in the first mode, an electric control mask plate is arranged between a compound lens array and a display; in the second mode, the electric control mask plate is arranged between the large-caliber lens array and the small-caliber lens array of the compound lens array; in the third mode, the electric control mask plate is arranged between the compound lens array and the holographic functional screen.
The compound lens array is composed of a large-caliber lens array and a small-caliber lens array, wherein the large-caliber lens array is arranged right below the small-caliber lens array.
The diffusion screen is used for receiving the 3D image, scattering light and eliminating grid influence caused by gaps between the electric control mask plate and the lens, so that the originally discontinuous 3D image is reconstructed into a continuous light field, and the corresponding 3D image can be seen at each viewing angle.
The principle of the integrated imaging 3D display device based on the compound lens array is as shown in the accompanying drawings 8 and 9, when an electric control mask plate is in a state 1, light rays emitted by all pixel points on the micro image array pass through the mask plate, the light rays on an area A are intercepted, the light rays on an area B are modulated by a large-caliber lens and a small-caliber lens through the mask plate to form a central depth plane 1, all the pixel points on the micro image array are converged into 3D image points near the central depth plane 1 to form a 3D image, and the position of the central depth plane 1 can be obtained through a Gaussian formula:
wherein f is1For the focal length of a large-aperture lens in a display device, f2Is the focal length of the small-caliber lens, g is the distance from the display to the composite lens array, d is the distance between the large-caliber lens and the small-caliber lens, l1The distance from the central depth plane 1 to the compound lens array; when automatically controlled mask plate is state 2, when the light that each pixel sent on the microimage array passes through mask plate, light on the regional B is intercepted, and light on the regional A sees through mask plate and is only modulated by heavy-calibre lens, forms central depth plane 2, and each pixel assembles into a 3D image point near central depth plane 2 on the microimage array, constitutes 3D like, can obtain central depth plane 2's position by the gaussian formula:
wherein l2The distance from the central depth plane 2 to the compound lens array.
According to the invention, the synchronous controller is utilized to control the electric control mask plate to be rapidly switched between the state 1 and the state 2, and simultaneously the micro-image array switching on the display and the electric control mask plate switching are controlled to be synchronous, so that an observer can visually see the 3D images on the two central depth planes simultaneously based on the visual persistence effect of human eyes, and the purpose of enhancing the depth of field is achieved.
Description of the drawings
The foregoing aspects and features of the present invention will become further apparent and more readily appreciated from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an integrated imaging 3D display device based on a compound lens array
FIG. 2 shows an electrically controlled mask plate and its subunit structure
FIG. 3 is a schematic view of an electrically controlled mask in state 1
FIG. 4 is a schematic diagram of an electrically controlled mask in state 2
FIG. 5 is a schematic diagram of an electric control mask plate arranged between a compound lens array and a display, wherein (a) state 1 and (b) state 2
FIG. 6 is a schematic diagram of an electric control mask plate arranged between a large-aperture lens array and a small-aperture lens array of a compound lens array, wherein (a) state 1 and (b) state 2
FIG. 7 is a schematic diagram of an electric control mask plate arranged between a compound lens array and a diffusion screen, wherein (a) state 1 and (b) state 2
FIG. 8 is a schematic view of the optical path of a liquid crystal mask in state 1
FIG. 9 is a schematic view of the optical path of the liquid crystal mask in the state 2
The reference numbers in the figures are:
1 display, 2 electric control mask plate, 3 composite lens array, 4 reconstruction 3D image 1, 5 reconstruction 3D image 2, 6 diffusion screen, 7 viewer, 8 synchronous controller, 9 micro image array, 10 electric control mask plate state 1 corresponding central depth plane 1, 11 electric control mask plate state 2 corresponding central depth plane 2, 12 small caliber lens array in composite lens array, 13 large caliber lens array in composite lens array
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Fifth, detailed description of the invention
The present invention will be described in further detail below with reference to a detailed description of an exemplary embodiment of a compound lens array based integrated imaging 3D display device according to the present invention. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.
The invention provides an integrated imaging 3D display device based on a composite lens array, which is composed of a synchronous controller, a display, an electric control mask plate, the composite lens array and a holographic function screen as shown in figure 1.
In this example, the synchronous controller generates a synchronous timing signal for controlling the micro-image array displayed on the display to be synchronously switched with the electrically controlled mask plate.
In this embodiment, the display is used to display an integrated imaging micro-image array.
In this embodiment, the electronic control mask is an electronic control liquid crystal mask, and the electronic control mask is placed between the compound lens array and the display in a first placing manner.
In this embodiment, the compound lens array is composed of a large-aperture lens array and a small-aperture lens array, wherein the large-aperture lens array is directly below the small-aperture lens array.
In this embodiment, the diffusion screen is a 5 ° diffusion screen, and is used to receive a 3D image, scatter light, and eliminate grid influence caused by the gap between the electrically controlled mask plate and the lens, so that the originally discontinuous 3D image is reconstructed into a continuous light field, and thus the corresponding 3D image can be seen at each viewing angle.
In this embodiment, the focal length of the large-aperture lens is 18mm, the focal length of the small-aperture lens is 15mm, the distance from the display to the composite lens array is 8mm, and the distance between the large-aperture lens and the small-aperture lens is 5 mm. When the electric control mask plate is in a state 1, when light rays emitted by all pixel points on the micro image array pass through the mask plate, the light rays on the area A are intercepted, the light rays on the area B are jointly modulated by the large-caliber lens and the small-caliber lens through the mask plate to form a central depth plane 1, all the pixel points on the micro image array are converged into 3D image points near the central depth plane 1 to form a 3D image, and the distance from the central depth plane 1 to the composite lens array is 48mm according to a Gauss formula; when the electric control mask plate is in a state 2, when light rays emitted by all pixel points on the micro image array pass through the mask plate, light rays on the area B are intercepted, the light rays on the area A only are modulated by the large-aperture lens through the mask plate to form a central depth plane 2, all the pixel points on the micro image array are converged into 3D image points near the central depth plane 2 to form a 3D image, and the distance from the central depth plane 2 to the composite lens array is 14.4mm according to a Gauss formula.
According to the invention, the synchronous controller is utilized to control the electronic control mask plate to be rapidly switched between the state 1 and the state 2, and simultaneously the micro-image array switching on the display and the electronic control mask plate switching are controlled to be synchronous, so that an observer can visually see the 3D images on the two central depth planes simultaneously based on the visual persistence principle of human eyes, and the purpose of enhancing the depth of field is achieved.
Claims (2)
1. The integrated imaging 3D display device based on the composite lens array is characterized by comprising a synchronous controller, a display, an electric control mask plate, the composite lens array and a diffusion screen, wherein the display is used for displaying the integrated imaging micro-image array; the electronic control mask plate comprises subunits A, B, wherein the subunits of the electronic control mask plate are composed of A, B areas, the side length of each subunit of the electronic control mask plate is equal to the diameter of a large-aperture lens in a compound lens array, the diameter of an area B is equal to the diameter of a small-aperture lens in the compound lens array, and the electronic control mask plate can realize two states, wherein in the state 1, the areas A of all the subunits of the electronic control mask plate are completely black and shield light, the areas B of all the subunits of the electronic control mask plate are transparent and allow the light to penetrate through, and in the state 2, the areas B of all the subunits of the electronic control mask plate are completely black and shield the light, and the areas A of all the subunits are transparent and allow the light to penetrate through; the compound lens array is composed of a large-caliber lens array and a small-caliber lens array, wherein the large-caliber lens array is arranged right below the small-caliber lens array and is used for modulating light rays emitted by a micro-image array displayed on a display and reconstructing a 3D image on two planes with different central depths; when automatically controlled mask plate is state 1, when the light that each pixel sent on the microimage array passes through mask plate, light on the regional A is intercepted, and light on the regional B sees through mask plate and is modulated by heavy-calibre lens and small-calibre lens jointly, forms central depth plane 1, and each pixel assembles into a 3D image point near central depth plane 1 on the microimage array, constitutes the 3D image, can obtain central depth plane 1's position by the gaussian formula:
wherein f is1For the focal length of a large-aperture lens in a display device, f2For focal length of small-bore lenses, g for display to compound lens arrayDistance, d is the distance between the large-caliber lens and the small-caliber lens, l1The distance from the central depth plane 1 to the compound lens array; when automatically controlled mask plate is state 2, when the light that each pixel sent on the microimage array passes through mask plate, light on the regional B is intercepted, and light on the regional A sees through mask plate and is only modulated by heavy-calibre lens, forms central depth plane 2, and each pixel assembles into a 3D image point near central depth plane 2 on the microimage array, constitutes 3D like, can obtain central depth plane 2's position by the gaussian formula:
wherein l2The distance from the central depth plane 2 to the compound lens array; the diffusion screen is used for receiving the 3D image, scattering light and eliminating grid influence caused by gaps between the electric control mask plate and the lens, so that the originally discontinuous 3D image is reconstructed into a continuous light field, and the corresponding 3D image can be seen at each viewing angle; the synchronous controller is used for controlling the electric control mask plate to be rapidly switched between two states, simultaneously controlling the micro-image array switching on the display to be synchronous with the electric control mask plate switching, and based on the visual persistence effect of human eyes, an observer can visually see the 3D images on the two central depth planes simultaneously, so that the depth-of-field enhanced integrated imaging 3D display is realized.
2. The integrated imaging 3D display device based on the compound lens array as claimed in claim 1, wherein the electronic control mask plate in the device has three placement modes: in the first mode, an electric control mask plate is arranged between a compound lens array and a display; in the second mode, the electric control mask plate is arranged between the large-caliber lens array and the small-caliber lens array of the compound lens array; in the third mode, the electric control mask plate is arranged between the compound lens array and the diffusion screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187730.6A CN110879478B (en) | 2019-11-28 | 2019-11-28 | Integrated imaging 3D display device based on compound lens array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187730.6A CN110879478B (en) | 2019-11-28 | 2019-11-28 | Integrated imaging 3D display device based on compound lens array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110879478A CN110879478A (en) | 2020-03-13 |
| CN110879478B true CN110879478B (en) | 2022-02-01 |
Family
ID=69730278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911187730.6A Active CN110879478B (en) | 2019-11-28 | 2019-11-28 | Integrated imaging 3D display device based on compound lens array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110879478B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111240034B (en) * | 2020-03-25 | 2021-06-15 | 北京航空航天大学 | 3D display device |
| CN113593008B (en) * | 2021-07-06 | 2023-07-07 | 四川大学 | True 3D image significant reconstruction method under complex scene |
| CN114488479B (en) * | 2022-01-10 | 2024-04-09 | 合肥埃科光电科技股份有限公司 | Industrial lens with large view field and high resolution front diaphragm |
| CN114488485B (en) * | 2022-02-14 | 2023-07-07 | 合肥埃科光电科技股份有限公司 | Large-target-surface wide-angle low-distortion industrial lens with f22mm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204761616U (en) * | 2015-06-05 | 2015-11-11 | 浙江宇佑影视传媒有限公司 | 3D display system that forms images |
| CN108169921A (en) * | 2017-12-27 | 2018-06-15 | 武汉华星光电技术有限公司 | Display and its display panel |
| CN108989787A (en) * | 2018-07-13 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of 3 d display device and stereo display control method |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100436538B1 (en) * | 1995-06-07 | 2004-09-16 | 제이콥 엔 올스테드터 | 3D imaging system |
| CN100483184C (en) * | 2007-05-29 | 2009-04-29 | 东南大学 | Zoom lens three-D display |
| US20140177051A1 (en) * | 2012-12-21 | 2014-06-26 | Elaine Frances Kopko | Holographic Display System |
| CN104407442A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | Integrated imaging 3D display micro-lens array and 3D manufacturing method thereof |
| KR101634014B1 (en) * | 2014-12-31 | 2016-06-27 | 동서대학교산학협력단 | Method for supplying image of integral imaging display system considering the position of an observer |
| WO2016137238A1 (en) * | 2015-02-26 | 2016-09-01 | Dual Aperture International Co., Ltd. | Processing multi-aperture image data |
| CN104954779B (en) * | 2015-06-23 | 2017-01-11 | 四川大学 | Integral imaging three-dimensional display center depth plane adjusting method |
| GB2550885A (en) * | 2016-05-26 | 2017-12-06 | Euro Electronics (Uk) Ltd | Method and apparatus for an enhanced-resolution light field display |
| CN107942526A (en) * | 2017-12-29 | 2018-04-20 | 张家港康得新光电材料有限公司 | Integration imaging display system |
| CN108563028A (en) * | 2017-12-29 | 2018-09-21 | 张家港康得新光电材料有限公司 | 3d display component |
| CN108152981B (en) * | 2018-01-16 | 2020-04-14 | 四川大学 | Floated integrated formation of image augmented reality 3D display device |
| CN108919492B (en) * | 2018-07-25 | 2021-05-07 | 京东方科技集团股份有限公司 | Near-to-eye display device, system and display method |
| 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 |
| CN110161697B (en) * | 2019-06-04 | 2021-09-10 | 京东方科技集团股份有限公司 | Near-eye display device and near-eye display method |
| CN110275309B (en) * | 2019-07-04 | 2021-12-28 | 京东方科技集团股份有限公司 | Polarizing microlens structure, display device and driving method thereof |
-
2019
- 2019-11-28 CN CN201911187730.6A patent/CN110879478B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204761616U (en) * | 2015-06-05 | 2015-11-11 | 浙江宇佑影视传媒有限公司 | 3D display system that forms images |
| CN108169921A (en) * | 2017-12-27 | 2018-06-15 | 武汉华星光电技术有限公司 | Display and its display panel |
| CN108989787A (en) * | 2018-07-13 | 2018-12-11 | 京东方科技集团股份有限公司 | A kind of 3 d display device and stereo display control method |
Non-Patent Citations (1)
| Title |
|---|
| Integral imaging with multiple image planes using a uniaxial crystal plate;Jae-Hyeung Park et.al.;《OPTICS EXPRESS》;20030811;第11卷(第16期);第1862-1875页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110879478A (en) | 2020-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110879478B (en) | Integrated imaging 3D display device based on compound lens array | |
| EP3248052B1 (en) | Visual display with time multiplexing | |
| CN106461955B (en) | The method for showing augmented reality | |
| Song et al. | Light f ield head-mounted display with correct focus cue using micro structure array | |
| CN108375840B (en) | Light field display unit based on small array image source and three-dimensional near-to-eye display device using light field display unit | |
| KR100440956B1 (en) | 2D/3D Convertible Display | |
| CN108008540B (en) | A kind of three-dimensional display system | |
| CN108803053B (en) | Three-dimensional light field display system | |
| CN108886610A (en) | 3D display device, methods and applications | |
| PL181803B1 (en) | System for presenting three-dimensional images | |
| US20110216407A1 (en) | Lighting device for an autostereoscopic display | |
| CN110012286B (en) | High-viewpoint-density human eye tracking stereoscopic display device | |
| CN107102446B (en) | A kind of 3 D stereo display panel, its display methods and display device | |
| JP3368204B2 (en) | Image recording device and image reproducing device | |
| JP2004144874A (en) | Picture display device and picture display method | |
| CN106291945B (en) | A kind of display panel and display device | |
| CN102520527A (en) | Naked eye stereo display system and method | |
| CN102023393A (en) | 3D stereo display technology | |
| CN108319030A (en) | A kind of auto-stereo display system | |
| KR20140111553A (en) | Stereoscopic display apparatus, and display method thereof | |
| CN105954956B (en) | 3D display panel and its control method | |
| EP1083757A2 (en) | Stereoscopic image display apparatus | |
| CN113156658A (en) | Stereoscopic display system based on synchronous spatial light modulator | |
| CN206133120U (en) | Display panel and display device | |
| CN112970247B (en) | System and method for displaying multiple depth-of-field images |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |