CN113589548A - Planar transmission type 3D light field display system based on projection array - Google Patents
Planar transmission type 3D light field display system based on projection array Download PDFInfo
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- CN113589548A CN113589548A CN202110855762.XA CN202110855762A CN113589548A CN 113589548 A CN113589548 A CN 113589548A CN 202110855762 A CN202110855762 A CN 202110855762A CN 113589548 A CN113589548 A CN 113589548A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors
Abstract
The invention relates to a plane transmission type 3D light field display system based on a projection array, which comprises the projection array, a plane reflector and a screen, wherein the projection array comprises a plurality of projectors arranged on an arc section bracket, the plane reflector is arranged on a light path of the projection array, and light rays emitted by the projectors are reflected to the screen through the plane reflector and are transmitted to the other surface of the screen to be projected to generate a three-dimensional image. According to the plane transmission type 3D light field display system, the plane reflector is arranged on the light path of the projection array, light rays emitted by the projector are reflected to the screen and transmitted to the other surface of the screen to be projected to generate a three-dimensional image, the projection distance is increased, the breadth of the display system is expanded under the condition that the occupied area is not increased, the three-dimensional space is fully utilized, the size is small, and the carrying and the use are convenient.
Description
Technical Field
The invention relates to the technical field of 3D display, in particular to a planar transmission type 3D light field display system based on a projection array.
Background
In 3D display systems, 3D display can be divided into two broad categories; binocular parallax 3D display and true 3D display. The true 3D display refers to more fully invoking stereoscopic vision characteristics of human eyes and truly restoring the impression of human eyes when observing a natural three-dimensional scene, so that the key point of such technologies is to actually image display contents in a space in a feasible optical manner.
At present, the 3D light field display technology based on projection array is a mature true 3D display technology. The projector arrays are arranged in a certain radian and project to a certain area of the screen. The projectors at different positions project the view field images in the direction, the images are fused at the screen, and the light field of the images is vertically diffused by the holographic diffusion film at the screen, so that viewers at different distances can correctly observe the three-dimensional images. Thus, a 3D light field display system based on a projection array provides a horizontal field of view pair by a projector arc arrangement, with the holographic diffuser film supplementing the vertical information.
Depending on the viewing position of the viewer, 3D light field display systems can be divided into transmissive and reflective. The observer and the projector array are respectively positioned on different sides of the screen and are in a transmission type; the viewer and projector arrays are each reflective on the same side of the screen. The image of the transmission type layout is brighter, and the method can be suitable for places with higher brightness, such as outdoors; and the background of the image in the reflective layout is clearer and the brightness is relatively darker.
The breadth of the existing 3D light field display system is limited by the projection ratio (the ratio of the projection distance to the picture width) of the projector, and a small projection ratio is difficult due to the need to ensure image quality. If a larger format is required, a larger throw distance is required, which results in a larger footprint for the 3D light field display system.
Therefore, the prior art has yet to be developed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a planar transmission type 3D light field display system based on a projection array, and aims to solve the problems that the existing projection occupies a large space or has a small projection breadth.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a plane transmission type 3D light field display system based on a projection array, which comprises the projection array, a plane reflector and a screen, wherein the projection array comprises a plurality of projectors arranged on an arc section support, the plane reflector is arranged on a light path of the projection array, and light rays emitted by the projectors are reflected to the screen through the plane reflector and are transmitted to the other surface of the screen to be projected to generate a three-dimensional image.
Further, adjacent projectors are spaced 1 ° to 2 ° apart along the arc segment support center.
Further, the projector is left-right symmetric along a center line of the plane mirror.
Further, a holographic diffusion film is arranged on the screen.
The projection array and the plane reflector are mounted in the mounting cabinet, and the screen is mounted in the mounting cabinet or above the mounting cabinet.
Further, the screen is installed above the installation cabinet, and the installation cabinet is provided with an exit window for light emitted by the projector to pass out.
The technical scheme of the invention has the following beneficial effects:
according to the plane transmission type 3D light field display system, the plane reflector is arranged on the light path of the projection array, light rays emitted by the projector are reflected to the screen and transmitted to the other surface of the screen to be projected to generate a three-dimensional image, the projection distance is increased, the breadth of the display system is expanded under the condition that the occupied area is not increased, the three-dimensional space is fully utilized, the size is small, and the carrying and the use are convenient.
Drawings
FIG. 1 is a schematic structural diagram of a planar transmissive 3D light field display system of the present invention;
FIG. 2 is a schematic diagram of the optical path of the planar transmissive 3D light field display system of the present invention;
fig. 3 is a schematic view of a virtual light path of the planar transmission type 3D light field display system of the present invention.
Description of reference numerals:
100-plane transmission type 3D light field display system, 101-installation cabinet, 10-projection array, 11-arc section support, 20-plane reflector and 30-screen.
Detailed Description
The technical solutions in 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 obvious that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1 to 3, the present invention provides a planar transmission type 3D light field display system 100 based on a projection array 10, including a projection array 10, a plane mirror 20 and a screen 30, where the projection array 10 includes a plurality of projectors mounted on an arc segment support 11, the plane mirror 20 is disposed on a light path of the projection array 10, light emitted by the projectors is reflected to the screen 30 through the plane mirror 20 and is transmitted to another surface of the screen 30 to generate a three-dimensional image, that is, a position where a user observes the three-dimensional image and a position of the projectors are respectively located on different sides of the screen 30.
As shown in fig. 3, the projection distance is equivalent to the distance from the virtual position of the projection array 10 shown by the dotted line to the screen 30 after being reflected by the plane mirror 20. If the plane mirror 20 is not used, the projection distance is the distance from the real position of the projection array 10 to the screen 30.
Therefore, the plane transmission type 3D light field display system 100 of the present invention, by disposing the plane mirror 20 on the light path of the projection array 10, reflects the light emitted from the projector to the screen 30, and transmits the light to the other side of the screen 30 for projection to generate a three-dimensional image, thereby increasing the projection distance, expanding the breadth of the display system without increasing the floor area, fully utilizing the three-dimensional space, having a small volume, and being convenient for carrying and using.
Before use, each projector needs to be subjected to projection calibration, so that projection pictures of all projectors on the screen 30 are overlapped and displayed normally, and projection transformation of the projectors is obtained and used for preprocessing a projection source.
In this embodiment, the circular arc arrangement of the projectors provides a horizontal field of view pair, and the screen 30 is provided with a holographic diffuser film for supplementing vertical information. Since the human eye grows horizontally, the most basic method for providing three-dimensional information to humans is to implement horizontal parallax pairs. The projectors at different positions project the field images in the direction, the images are fused at the screen 30, and the image light field is vertically diffused by the holographic diffusion film at the screen 30, so that viewers at different distances can correctly observe the three-dimensional images.
The projector may be mounted on a horizontal arc segment support 11, or may be mounted on an oblique arc segment support 11.
In the present embodiment, since the reflection range of the plane mirror 20 is limited, in order to ensure that all projectors project onto the screen 30 area, the projection range of the projectors can be limited by the size of the plane mirror 20.
As an embodiment, the adjacent projectors are spaced by 1 ° to 2 ° along the center of the arc segment support 11, or a reasonable angle is set according to actual requirements. If the horizontal viewing angle of the planar transmissive 3D light field display system 100 is 60 degrees and the interval between adjacent projectors is 1 °, at least 60 projectors are required.
Preferably, the projector is left-right symmetrical along the center line of the plane mirror 20.
Further, the planar transmission type 3D light field display system 100 of the present invention further includes an installation cabinet 101, the projection array 10 and the planar reflector 20 are installed in the installation cabinet 101, and the screen 30 is installed in the installation cabinet 101 or above the installation cabinet 101, so as to form a whole, which is convenient for transportation and use, and is not easy to be damaged and swayed.
When the screen 30 is installed in the installation cabinet 101, the planar transmissive 3D light field display system 100 has a better integrity, and the whole system can be used as a tv (as shown in fig. 1).
Preferably, the screen 30 is installed above the installation cabinet 101, and the installation cabinet 101 is provided with an exit window for light emitted by the projector to pass through, so as to ensure that the projector can project onto the screen 30. The exit window may be a hollow structure or may be a flat glass mounted as long as there is no influence on the irradiation direction.
The above examples of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (6)
1. The planar transmission type 3D light field display system based on the projection array is characterized by comprising the projection array, a planar reflector and a screen, wherein the projection array comprises a plurality of projectors which are arranged on an arc section support, the planar reflector is arranged on a light path of the projection array, and light rays emitted by the projectors are reflected to the screen through the planar reflector and are transmitted to the other surface of the screen to be projected to generate a three-dimensional image.
2. The planar transmissive 3D light field display system of claim 1 wherein adjacent projectors are spaced 1 ° to 2 ° along the arc segment support center.
3. The planar transmissive 3D light field display system of claim 1 wherein the projector is left-right symmetric along a centerline of the planar mirror.
4. The planar transmissive 3D light field display system of claim 1 wherein a holographic diffuser film is disposed on the screen.
5. The planar transmissive 3D light field display system of claim 1 further comprising a mounting cabinet, the projection array, planar mirror being mounted within the mounting cabinet, the screen being mounted within or above the mounting cabinet.
6. The planar transmissive 3D light field display system of claim 5 wherein the screen is mounted above the mounting cabinet, the mounting cabinet being provided with an exit window for light from the projector to pass out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110855762.XA CN113589548A (en) | 2021-07-28 | 2021-07-28 | Planar transmission type 3D light field display system based on projection array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110855762.XA CN113589548A (en) | 2021-07-28 | 2021-07-28 | Planar transmission type 3D light field display system based on projection array |
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432010A (en) * | 1981-10-05 | 1984-02-14 | Hitachi, Ltd. | Rear projection apparatus |
| CN1263671A (en) * | 1997-07-15 | 2000-08-16 | 汤姆森消费电子有限公司 | Holographic screen projection televisions with optical correction |
| CN1529205A (en) * | 2003-10-10 | 2004-09-15 | 山东慧敏科技开发有限公司 | Back-projection optical-fiber screen display and its manufacturing method |
| CN1735172A (en) * | 2004-08-04 | 2006-02-15 | 精工爱普生株式会社 | Projector |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| CN102726050A (en) * | 2009-07-31 | 2012-10-10 | 和乐格拉飞卡公司 | Method and apparatus for displaying 3D images |
| CN203217233U (en) * | 2012-10-25 | 2013-09-25 | 耿征 | True three-dimensional image display system |
| CN103713462A (en) * | 2012-10-09 | 2014-04-09 | 耿征 | True three-dimensional image display system and display method |
| CN103809366A (en) * | 2012-11-08 | 2014-05-21 | 耿征 | True three-dimensional image display system and true three-dimensional image display method |
| CN103888757A (en) * | 2014-03-24 | 2014-06-25 | 中国人民解放军国防科学技术大学 | Numerous-viewpoint naked-eye three-dimensional digital stereographic projection display system |
| CN103969937A (en) * | 2014-05-09 | 2014-08-06 | 浙江大学 | Multi-projection three-dimensional display device and method based on pupil compound application |
| CN204256278U (en) * | 2014-12-02 | 2015-04-08 | 上海理鑫光学科技有限公司 | Back projection type bore hole multiple views 3D display device |
| CN104735437A (en) * | 2015-03-09 | 2015-06-24 | 南京航空航天大学 | Display screen used for multi-visual point three-dimensional imaging system |
| CN106405996A (en) * | 2016-11-26 | 2017-02-15 | 冯浩然 | 3D (three-dimensional) imaging projection equipment |
| CN207198535U (en) * | 2017-09-07 | 2018-04-06 | 苏州同美装饰设计工程有限公司 | A kind of arc-shaped projection device of venue |
| CN110750041A (en) * | 2019-09-23 | 2020-02-04 | 上海影创信息科技有限公司 | Light field three-dimensional imaging device and system based on spatial light modulator |
| CN112399169A (en) * | 2020-10-29 | 2021-02-23 | 重庆工贸职业技术学院 | Projection array type naked-eye 3D display system |
-
2021
- 2021-07-28 CN CN202110855762.XA patent/CN113589548A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432010A (en) * | 1981-10-05 | 1984-02-14 | Hitachi, Ltd. | Rear projection apparatus |
| CN1263671A (en) * | 1997-07-15 | 2000-08-16 | 汤姆森消费电子有限公司 | Holographic screen projection televisions with optical correction |
| CN1529205A (en) * | 2003-10-10 | 2004-09-15 | 山东慧敏科技开发有限公司 | Back-projection optical-fiber screen display and its manufacturing method |
| CN1735172A (en) * | 2004-08-04 | 2006-02-15 | 精工爱普生株式会社 | Projector |
| CN102726050A (en) * | 2009-07-31 | 2012-10-10 | 和乐格拉飞卡公司 | Method and apparatus for displaying 3D images |
| CN102231044A (en) * | 2011-06-29 | 2011-11-02 | 浙江大学 | Stereoscopic three-dimensional display based on multi-screen splicing |
| CN103713462A (en) * | 2012-10-09 | 2014-04-09 | 耿征 | True three-dimensional image display system and display method |
| CN203217233U (en) * | 2012-10-25 | 2013-09-25 | 耿征 | True three-dimensional image display system |
| CN103809366A (en) * | 2012-11-08 | 2014-05-21 | 耿征 | True three-dimensional image display system and true three-dimensional image display method |
| CN103888757A (en) * | 2014-03-24 | 2014-06-25 | 中国人民解放军国防科学技术大学 | Numerous-viewpoint naked-eye three-dimensional digital stereographic projection display system |
| CN103969937A (en) * | 2014-05-09 | 2014-08-06 | 浙江大学 | Multi-projection three-dimensional display device and method based on pupil compound application |
| CN204256278U (en) * | 2014-12-02 | 2015-04-08 | 上海理鑫光学科技有限公司 | Back projection type bore hole multiple views 3D display device |
| CN104735437A (en) * | 2015-03-09 | 2015-06-24 | 南京航空航天大学 | Display screen used for multi-visual point three-dimensional imaging system |
| CN106405996A (en) * | 2016-11-26 | 2017-02-15 | 冯浩然 | 3D (three-dimensional) imaging projection equipment |
| CN207198535U (en) * | 2017-09-07 | 2018-04-06 | 苏州同美装饰设计工程有限公司 | A kind of arc-shaped projection device of venue |
| CN110750041A (en) * | 2019-09-23 | 2020-02-04 | 上海影创信息科技有限公司 | Light field three-dimensional imaging device and system based on spatial light modulator |
| CN112399169A (en) * | 2020-10-29 | 2021-02-23 | 重庆工贸职业技术学院 | Projection array type naked-eye 3D display system |
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