CN113126317A - Naked eye 3D display system - Google Patents
Naked eye 3D display system Download PDFInfo
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- CN113126317A CN113126317A CN202110430320.0A CN202110430320A CN113126317A CN 113126317 A CN113126317 A CN 113126317A CN 202110430320 A CN202110430320 A CN 202110430320A CN 113126317 A CN113126317 A CN 113126317A
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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
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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
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/35—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using reflective optical elements in the optical path between the images and the observer
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Abstract
The invention relates to a naked eye 3D display system, which comprises a display assembly, a display module and a display module, wherein the display assembly comprises more than two display sources, and each display source is used for displaying different visual angles of the same scene; the total beam splitter is used for receiving and fusing light paths of the display sources, the light paths of the display sources are projected to the total beam splitter, and the incidence angle and the emergence angle of the total beam splitter are both 45 degrees; the observation window is connected with the output end of the convergent light path of the total beam splitter so as to form a 3D effect of a scene; and the cylindrical mirror is connected with the output end of the total light path of the observation window for focusing so as to form a screen-out 3D effect. The system realizes the compounding of a plurality of visual angle images through the semi-reflecting and semi-transmitting spectroscope, thereby reducing the structural complexity, reducing the processing difficulty of 3D data and generating larger screen-out and suspension effects; in addition, the system can flexibly select the number of display sources through reasonable layout of the spectroscope, and the optical path difference of the display sources is adjusted through the compensating mirror and the guide rail, so that the naked eye 3D effect is optimized.
Description
Technical Field
The invention relates to the field of naked eye 3D.
Background
In the 3D display system, naked eye 3D shows because unique characteristic, need not wear to look helps glasses or helmet alright watch the 3D effect, and its lifelike depth of field and third dimension, has greatly improved spectator again and has watched the visual impact force and the sense of immersing when experiencing, becomes the best display product of product promotion, public propaganda and image broadcast. At present, naked eye 3D imaging can be structurally divided into a slit grating type, a cylindrical lens grating type and a projection type. Due to the characteristics of the slit grating type and the lenticular lens grating type, the display content needs to be coded, and the requirements on the precision and the uniformity of the structures of the slit grating and the lenticular lens grating are high; the multi-view projection is large in size, needs to process multi-path projection data, has high requirements on hardware, is simple in high-speed scanning structure, but is expensive in high-speed projector, and has extremely high requirements on synchronism of a rotating structure and the projector. Therefore, there is still room for improvement in existing naked-eye 3D techniques.
Disclosure of Invention
One technical problem solved by one aspect of the present disclosure is to provide a naked eye 3D display system.
The technical scheme adopted by the invention for solving the technical problems is as follows: a naked eye 3D display system comprises a display assembly, a display module and a display module, wherein the display assembly comprises more than two display sources, and each display source is used for displaying different visual angles of the same scene; the total beam splitter is used for receiving and fusing light paths of the display sources, the light paths of the display sources are projected to the total beam splitter, and the incidence angle and the emergence angle of the total beam splitter are both 45 degrees; the observation window is connected with the output end of the convergent light path of the total beam splitter so as to form a 3D effect of a scene; and the cylindrical mirror is connected with the output end of the total light path of the observation window for focusing so as to form a screen-out 3D effect.
The naked eye 3D display system as described above, the display component has a display source set fused by a branch spectroscope, the display source set includes two display sources, the reflective mirror reflects a light path of one of the display sources to a first incident surface of the branch spectroscope, a light path of the other display source is projected to a second incident surface of the branch spectroscope, and the branch spectroscope projects the light paths of the display source set after fusing the light paths; the incident angle and the emergent angle of the reflective mirror and the branch spectroscope are both 45 degrees.
The naked-eye 3D display system as described above, the display source groups are two groups, one group is a longitudinal group, the other group is a transverse group, two display sources in the longitudinal group are distributed in a staggered manner, two display sources in the transverse group are distributed in a staggered manner, and the two groups of display sources project light paths to the two incident surfaces of the total beam splitter through the corresponding branch beam splitters respectively.
According to the naked eye 3D display system, at least one incident line of the total beam splitter is configured with a plurality of transition beam splitters parallel to and corresponding to the total beam splitter, both the incident angle and the exit angle of the transition beam splitter are 45 degrees, and the light path of the display source in the display component is projected to the total beam splitter through the transition beam splitter.
In the foregoing naked-eye 3D display system, the light path projected by the transition beam splitter to the total beam splitter includes a light path from the display source group.
According to the naked eye 3D display system, the display source groups are three longitudinal groups, and two display sources in each group are distributed in a staggered manner; one display source group is projected to one incident surface of the total spectroscope through the corresponding branch spectroscope; and the other incident surface of the total beam splitter is provided with two transition beam splitters, and the two transition beam splitters are respectively connected with one display source group so as to project the light path of the two transition beam splitters to the other incident surface of the total beam splitter.
In the naked eye 3D display system, the display source is provided with a compensation mirror to compensate for the difference of times of the light path passing through the beam splitter.
In the foregoing naked-eye 3D display system, each display source is configured with a guide rail, and a position of each display source can be adjusted on the guide rail, so that optical paths from each display source to the total beam splitter are consistent.
The naked eye 3D display system comprises the window frame and the light-transmitting glass on the inner periphery, wherein the light-transmitting glass is provided with the film layer to reduce stray light.
According to the naked eye 3D display system, the total number of the display sources is 4-8, and the display sources are liquid crystal displays, laser displays, projectors, LED displays or OLED displays.
One advantageous effect brought by one aspect of the present disclosure: bore hole 3D display system realizes compound a plurality of visual angle images through half reflection half mirror, reduces structural complexity, alleviates the processing degree of difficulty of 3D data, produces screen and suspension effect.
Drawings
Certain embodiments of the invention will now be described in detail, by way of example and not limitation, with reference to the figures, wherein like reference numerals identify identical or similar elements or portions. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
In the drawings:
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is a schematic view of a multi-view fusion structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an equivalent position of a fusion structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a cylindrical mirror focusing structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of a cylindrical lens according to an embodiment of the present invention;
FIG. 6 is a schematic view of a second embodiment of the present invention;
FIG. 7 is a third schematic view of the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Referring to fig. 1-7, there is shown a naked eye 3D display system, the system comprising:
the display assembly comprises more than two display sources, and each display source is used for displaying different visual angles of the same scene; the total beam splitter is used for receiving and fusing light paths of the display sources, the light paths of the display sources are projected to the total beam splitter, and the incidence angle and the emergence angle of the total beam splitter are both 45 degrees; the observation window is connected with the output end of the convergent light path of the total beam splitter so as to form a 3D effect of a scene; and the cylindrical mirror is connected with the output end of the total light path of the observation window for focusing so as to form a screen-out 3D effect.
The beam splitter (Beamsplitter), i.e. a half mirror, generates a transmitted light beam and a reflected light beam after the light path of the display source passes through the beam splitter. Each display source shows same scene content, but for different visual angles, the light path of display source can finally get into the fusion with 45 degrees incident angles via total spectroscope arbitrary sides, the multi-view display source can be compound to the spectroscope, the light after the fusion is thrown and is formed the 3D effect to the observation window, because 3D formation of image is inside the window, consequently focus the light of window outgoing again through the cylindrical mirror, observe outside the focus point this moment, can see out the 3D effect of screen.
In some embodiments, the display assembly has a display source set fused by a branch spectroscope, the display source set includes two display sources, the reflector reflects the light path of one of the display sources to a first incident surface of the branch spectroscope, the light path of the other display source is projected to a second incident surface of the branch spectroscope, and the branch spectroscope projects the fused light paths of the display source set; the incident angle and the emergent angle of the reflective mirror and the branch spectroscope are both 45 degrees.
For example, the two display source groups are two groups, one group is a longitudinal group, the other group is a transverse group, two display sources in the longitudinal group are distributed in a staggered manner, two display sources in the transverse group are distributed in a staggered manner, and the two display source groups respectively project light paths to two incident planes of the total beam splitter through the corresponding branch beam splitters.
With particular reference to FIGS. 1-5, P1-P4To display the source, P1、P2In longitudinal groups, P3、P4For the lateral group, the display source may be a liquid crystal display, a laser display, a projector, an LED display, an OLED display, or the like, and the display may be static or dynamic, but P1、P2、P3、P4The display contents are different visual angles of the same scene. M1、M4、M5Is a spectroscope, M1、M4Is a branch beam splitter, M5Is a total beam splitter, M2、M3Is a plane mirror.
P1Beam splitter M1Transmission to total beam splitter M5Via a total beam splitter M5The reflection reaches the window W; p2First passes through a plane mirror M2Reflected to the branch spectroscope M1Passing through a branch spectroscope M1Reflected and then passes through a total beam splitter M5The reflection reaches the window W and passes through the spectroscope M1Time, display sourceP1And P2Displaying that the contents are fused, and taking P when the contents are fused1Transmitted light beam, P2The reflected light beam of (1); same principle of P3Passing through a plane mirror M3Reflected by the branch beam splitter M4Reflected and then transmitted through a total beam splitter M5The window W is reached; p4Beam splitter M4Then passes through the total beam splitter M5Reaches the window W and passes through the branch spectroscope M4Time P3And P4The display content has been fused. Through a total beam splitter M5Finally P will be1、P2、P3、P4The display contents are merged together. The reflector, the beam splitter and the display source are distributed at an angle of 45 degrees, and in this embodiment, the equivalent positions of the 4 display sources are all located at P4Corresponding to P4The positions of the four display sources are displayed simultaneously, the 4 display sources display different visual angles at the same position, if the three-dimensional (3D) effect is observed at the window W, the 3D is displayed in the window, and light rays emitted by the observation window pass through a cylindrical mirror MrFocusing is carried out, and the 3D effect M of the screen can be seen by observing outside a focusing pointoThe 3D imaging is now off-screen and suspended in the air.
In the embodiment, four display sources are shown, each display source needs to be distributed in a staggered manner, so that interference of light paths is avoided, and the number of the display sources in the embodiment can be simplified, for example, the display source P is omitted2、P3Only P remains1、P4Directly projected to a total beam splitter M5And (4) fusing. After each display source passes through the beam splitter, a transmitted beam and a reflected beam are generated, and whether the transmitted beam or the reflected beam subsequently propagates in the optical path is determined by the layout of the whole system, for example, in the embodiment, if the observation window W is arranged on the M of the total beam splitter5To the right of (1), then P1、P2After fusion, by M5Transmitted light beam, P, is passed to the viewing window3、P4Transmitted to the observation window W is a reflected light beam.
The observation window W is an outlet for displaying light, and can comprise a window frame and light-transmitting glass arranged in the window frame, the light is transmitted out through the glass, and a film layer is arranged on the light-transmitting glass in a film pasting or film coating mode to limit stray light. In addition, the observation window W may be made in a size-adjustable structure to control light emission.
In the drawing G1-G3The compensating mirror is arranged at an angle of 45 degrees with the display source and is used for compensating the frequency difference of the display source passing through the spectroscope, and the arrangement of the compensating mirror ensures that all optical paths are consistent. Furthermore, P1、P2、P3、P4The optical path can be adjusted by adjusting the position of the optical path by being arranged on a guide rail which can move for a certain distance. If the calibration adjustment is performed when the system is used for the first time, firstly, the calibration content of the display source (taking a magic cube image as an example) is set, the view angle images of four display sources are set, and the display source P is used4Fixed and adjusted along the guide rail1、P2、P3The position of (A) can be fixed by observing the image clearness by human eyes1、P2、P3And if no other change exists after the calibration is finished, the position of the display source does not need to be adjusted. If no guide rail is available, the display source needs to be moved manually for adjustment.
The branch spectroscope fuses the light paths of the display source group and then projects the fused light paths, the fused light paths can be directly projected to the total spectroscope, any side of the total spectroscope can be incident, if the number of the display sources distributed on one side of the total spectroscope is large, one side of the total spectroscope only corresponds to one incident line, and the fusion of the light paths can be realized through the transition spectroscope.
At least one incident line of the total spectroscope is provided with a plurality of transition spectroscopes which are parallel to and correspond to the total spectroscope, the incident angle and the emergent angle of each transition spectroscope are both 45 degrees, and the light path of the display source in the display component is projected to the total spectroscope through the transition spectroscopes.
Referring to the embodiment shown in fig. 6-7, the display source groups are three longitudinal groups, and two display sources in each group are distributed in a staggered manner, so as to avoid light path interference; one display source group is projected to one incident surface of the total spectroscope through the corresponding branch spectroscope; and the other incident surface of the total beam splitter is provided with two transition beam splitters, and the two transition beam splitters are respectively connected with one display source group so as to project the light path of the two transition beam splitters to the other incident surface of the total beam splitter.
Specifically, P in the figure1-P6Is a display source, G1-G6Is a compensating mirror, M2、M5、M8Is a plane mirror, M1、M4、M7Is a branch beam splitter, M6、M9Is a transitional beam splitter, M3Is a total beam splitter, the difference between the two embodiments is that the position of the display source is adjusted by taking into account the difference in optical path length. In both embodiments the total beam splitter M3Two display source groups, i.e. four display sources (P), are arranged in the incident line on the upper side3-P6) For the optical path of each display source to enter the total beam splitter M3And all the light paths are fused on the incident line of the total spectroscope through the corresponding transition spectroscope.
In particular, the display source P1Entering branch spectroscope M1Obtaining a transmitted beam, the display source P2Via a mirror M2Reflected to the branch spectroscope M1Obtaining a reflected beam, a display source P1、P2In the branch spectroscope M1Fused and then projected to a total beam splitter M3A one-side incident surface of (a); display source P3Transmitted light beam, display source P4Is projected to the transition beam splitter M6Via a transition beam splitter M6Reflected to the total beam splitter M3(ii) a Display source P5Transmitted light beam, display source P6Is projected to the transition beam splitter M9Via a transition beam splitter M9Reflection to transition spectroscope M6And a display source P3、P4Merging, finally passing through a transition spectroscope M6Transmitted to the total beam splitter M3To the other side of the plane of incidence. To this end, the source P is displayed1-P6At the total beam splitter M3And (4) fusing, projecting the fused light path to an observation window W, and then focusing by a cylindrical concave mirror to form a naked eye 3D effect. The display sources can be provided with appropriate compensation mirrors, such as compensation mirror G, at 45 degrees to the display sources1-G6Adjustment ofThe optical path difference makes the optical path of each optical path basically consistent.
The principle that a naked eye 3D system can compound a plurality of display sources through a plurality of spectroscopes is adopted, so that more visual angles are compounded, partial energy is lost when the display sources are reflected and transmitted through the spectroscopes, the brightness of the display sources is obviously reduced due to the excessive spectroscopes, and the total number of the display sources is proper to 4-8.
To sum up, the naked eye 3D display system realizes compounding a plurality of visual angle images through the semi-reflecting semi-transparent spectroscope to reduce structural complexity, alleviate the processing degree of difficulty of 3D data, produce great play screen and suspension effect. In the whole system, the number of display sources is flexibly increased through reasonable layout of spectroscopes, such as branch spectroscopes and transition spectroscopes, so that light path interference among the display sources is avoided; the optical path difference of the display source can be adjusted through the arrangement of the compensating mirror and the guide rail, so that the respective optical paths are basically consistent, and a good naked eye 3D effect is presented.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a bore hole 3D display system which characterized in that: the system comprises a plurality of devices which are connected with each other,
the display assembly comprises more than two display sources, and each display source is used for displaying different visual angles of the same scene;
the total beam splitter is used for receiving and fusing light paths of the display sources, the light paths of the display sources are projected to the total beam splitter, and the incidence angle and the emergence angle of the total beam splitter are both 45 degrees;
the observation window is connected with the output end of the convergent light path of the total beam splitter so as to form a 3D effect of a scene;
and the cylindrical mirror is connected with the output end of the total light path of the observation window for focusing so as to form a screen-out 3D effect.
2. The naked eye 3D display system of claim 1, wherein:
the display component is provided with a display source group fused by a branch spectroscope, the display source group comprises two display sources, the reflector reflects the light path of one of the display sources to a first incident surface of the branch spectroscope, the light path of the other display source is projected to a second incident surface of the branch spectroscope, and the branch spectroscope fuses the light paths of the display source group and projects the fused light paths; the incident angle and the emergent angle of the reflective mirror and the branch spectroscope are both 45 degrees.
3. A naked eye 3D display system as claimed in claim 2, wherein:
the two groups of display source groups are longitudinally arranged and transversely arranged, two display sources in the longitudinally arranged groups are distributed in a staggered manner, two display sources in the transversely arranged groups are distributed in a staggered manner, and the two groups of display source groups respectively project light paths to two incident planes of the total spectroscope through the corresponding branch spectroscopes.
4. A naked eye 3D display system as claimed in claim 2, wherein:
at least one incident line of the total spectroscope is provided with a plurality of transition spectroscopes which are parallel to and correspond to the total spectroscope, the incident angle and the emergent angle of each transition spectroscope are both 45 degrees, and the light path of the display source in the display component is projected to the total spectroscope through the transition spectroscopes.
5. The naked eye 3D display system of claim 4, wherein:
the light path projected to the total beam splitter by the transition beam splitter comprises a light path from the display source group.
6. The naked eye 3D display system of claim 5, wherein:
the display source groups are three longitudinal groups, and two display sources in each group are distributed in a staggered manner; one display source group is projected to one incident surface of the total spectroscope through the corresponding branch spectroscope; and the other incident surface of the total beam splitter is provided with two transition beam splitters, and the two transition beam splitters are respectively connected with one display source group so as to project the light path of the two transition beam splitters to the other incident surface of the total beam splitter.
7. The naked eye 3D display system of claim 1, wherein:
and the display source is provided with a compensating mirror to compensate the difference of times of the light path passing through the spectroscope.
8. The naked eye 3D display system of claim 1, wherein:
each display source is provided with a guide rail, and the position of each display source can be adjusted on the guide rail so as to enable the optical distance from each display source to the total beam splitter to be consistent.
9. The naked eye 3D display system of claim 1, wherein:
the observation window comprises a window frame and light-transmitting glass on the inner periphery, and the light-transmitting glass is provided with a film layer to reduce stray light.
10. The naked eye 3D display system of claim 1, wherein:
the total number of the display sources is 4-8, and the display sources are a liquid crystal display, a laser display, a projector, an LED display or an OLED display.
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| CN202110430320.0A CN113126317A (en) | 2021-04-21 | 2021-04-21 | Naked eye 3D display system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010593A1 (en) * | 2003-07-25 | 2005-02-03 | Maxsoft Co., Ltd | Optical module for multiple view 3-dimensional image display, display apparatus and mthod using the same |
| CN108269511A (en) * | 2018-02-28 | 2018-07-10 | 北京眸合科技有限公司 | A kind of air suspension display system |
| CN210666315U (en) * | 2019-05-16 | 2020-06-02 | 安徽大学 | Multi-view three-dimensional display device based on holographic projection |
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2021
- 2021-04-21 CN CN202110430320.0A patent/CN113126317A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010593A1 (en) * | 2003-07-25 | 2005-02-03 | Maxsoft Co., Ltd | Optical module for multiple view 3-dimensional image display, display apparatus and mthod using the same |
| CN108269511A (en) * | 2018-02-28 | 2018-07-10 | 北京眸合科技有限公司 | A kind of air suspension display system |
| CN210666315U (en) * | 2019-05-16 | 2020-06-02 | 安徽大学 | Multi-view three-dimensional display device based on holographic projection |
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