CN115039028A

CN115039028A - All-solid-state holographic shooting device and all-solid-state holographic projector

Info

Publication number: CN115039028A
Application number: CN202180008391.XA
Authority: CN
Inventors: 王广军; 余为伟
Original assignee: Jingmen City Dream Exploring Technology Co ltd
Current assignee: Jingmen City Dream Exploring Technology Co ltd
Priority date: 2020-01-13
Filing date: 2021-01-11
Publication date: 2022-09-09
Also published as: WO2021143640A1

Abstract

The application provides an all-solid-state holographic shooting device and an all-solid-state holographic projector, the all-solid-state holographic shooting device comprises a shooting lens group (1) and an imaging unit (2) which are arranged inside the holographic shooting device, the shooting lens group (1) is used for capturing light of scenery, the imaging unit (2) comprises a plurality of photosensitive chips (21), the light of scenery image surfaces on different depths of field is optically converted through the shooting lens group (1) and the imaging unit (2), real image pictures of the scenery on different depths of field image surfaces are respectively formed on the photosensitive chips (21) at corresponding distances and recorded, the adjacent pixel distance of the real image pictures formed on the photosensitive chips (21) is d (mm), the plurality of photosensitive chips (21) are equivalent to a group of mutually parallel equivalent photosensitive surfaces (3) corresponding to the shooting lens group (1), the distance between any two adjacent equivalent photosensitive surfaces (3) is L (mm), satisfies the following conditions: l is more than or equal to 2 d. The scheme of introducing a plurality of equivalent photosurfaces (3) realizes the real 3D image shooting function, does not need moving parts, greatly improves the reliability and the image quality, and simultaneously reduces the production cost and the control difficulty.

Description

All-solid-state holographic shooting device and all-solid-state holographic projector

The present application claims priority of chinese patent application with application number 202010029139.4 entitled "an all-solid-state holographic camera" filed by the office of chinese patent on 13/01/2020 and chinese patent application with application number 202010029144.5 entitled "an all-solid-state holographic projector" filed by the office of chinese patent on 13/01/2020, the entire contents of which are incorporated herein by reference.

Technical Field

The invention relates to the field of 3D display, in particular to an all-solid-state holographic shooting device and an all-solid-state holographic projector.

Background

To display 3D pictures we must first obtain a 3D film source, but current cameras can only capture 2D pictures. Although some movies have recently implemented 3D film source acquisition using a two-camera scheme, this scheme can only implement a pseudo-3D technique based on stereoscopic image pairs.

The holographic color photography technology can record real 3D picture information, but the shooting conditions are extremely harsh, the optical path layout is very difficult, and the holographic color photography technology can only be used for simple shooting in a laboratory and cannot be applied to actual life.

The patent No. CN 203965794U provides a 3D shooting scheme, but requires high-speed moving parts, the system reliability is low, and the requirement for data processing speed is extremely high.

Further, the 3D display technology can provide additional depth information on the basis of the conventional two-dimensional display, and thus is considered to be a development direction of the next generation display technology. However, at present, no effective scheme for realizing 3D display exists, and most of the successful commercial cases are pseudo-3D technologies based on stereo image pairs, and cannot provide a true 3D picture with depth information for users. For example, in a 3D movie of a movie theater, the principle is to use a projector to project two-dimensional left and right eye image pairs on a screen, and to wear selective filter eyes, so that the two eyes receive different images, thereby giving people an illusion of seeing a 3D image, but the projected image is only a 2D image. Long-term viewing can also cause eye discomfort.

Patents entitled CN106773469B, CN 207114903U and CN 206431409U disclose a scheme that can implement true 3D display. The key component of the three-dimensional display device is a three-dimensional display module, and the three-dimensional display module can realize real 3D picture reproduction through depth-of-field scanning. However, the moving parts are arranged inside the device, and the depth of field scanning is realized by depending on the internal movement in the working process. Although the method can realize the projection of the 3D picture, the reliability of the system can not be ensured due to the existence of the scanning moving part, the requirement on the refreshing speed of the picture is extremely high, the operation and control system is extremely complicated, the stable picture display is difficult to realize, and the manufacturing cost is extremely high.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects of the prior art, the all-solid-state holographic shooting device is provided, no moving part is needed in the working process, the reliability and the image quality are greatly improved, and meanwhile, the production cost and the control difficulty are reduced; the invention provides an all-solid-state holographic projector, which realizes the real 3D image projection function by introducing a scheme of a plurality of equivalent projection image surfaces, does not need moving parts in the working process, greatly improves the reliability and the image quality, and reduces the production cost and the control difficulty.

In order to solve the technical problem, the invention provides an all-solid-state holographic shooting device, which comprises a shooting lens group and an imaging unit, wherein the shooting lens group and the imaging unit are arranged in the holographic shooting device;

the shooting mirror group is used for capturing light of a scene;

the imaging unit comprises a plurality of photosensitive chips, and after light rays of scene image surfaces on different depths of field are optically converted by the shooting lens group and the imaging unit, real image pictures of the scene on the image surfaces with different depths of field are respectively formed on the photosensitive chips at corresponding distances and recorded;

the distance between adjacent pixels forming a real image picture on the photosensitive chips is d (mm), the photosensitive chips are equivalent to a group of mutually parallel equivalent photosensitive surfaces corresponding to the shooting mirror group, and the distance between any two adjacent equivalent photosensitive surfaces is L (mm), so that the following requirements are met: l is more than or equal to 2 d.

Furthermore, the imaging unit also comprises a light path integration mirror group, the position relation between the light path integration mirror group and the plurality of photosensitive chips meets the optical imaging principle, and the light path integration mirror group is used for optically converting the scene image surfaces with different depths of field into real image pictures;

after the light rays of the scene image surfaces on different depths of field are optically converted by the shooting lens group and the light path integrating lens group, the scene image surfaces on different depths of field are imaged on the photosensitive chips with corresponding depths of field respectively, and imaging on equivalent photosensitive surfaces corresponding to the photosensitive chips is equivalent.

Furthermore, the optical path integration mirror group is a cubic prism formed by splicing a plurality of sub-prisms, and a single photosensitive chip corresponds to one side surface of the optical path integration mirror group respectively;

the light rays of the scene image surface with different depth of field are reflected by a plurality of sub-prisms of the light path integration mirror group and are respectively imaged on the photosensitive chips with corresponding focal depths.

Furthermore, the number of the photosensitive chips is 3, the optical path integrating mirror group is an X combining prism, the X combining prism is formed by splicing 4 sub-prisms with cross sections in isosceles right triangles, the cross sections of the sub-prisms are square, the 3 photosensitive chips are respectively positioned on one side of the outer surfaces of the X combining prism, which are perpendicular to the cross sections of the 3 photosensitive chips, the distances between the 3 photosensitive chips and the corresponding side surfaces of the X combining prism are different, the 4 th outer surface of the X combining prism, which is perpendicular to the cross section of the X combining prism, is an image incidence surface, and the image incidence surface is just opposite to the shooting mirror group.

Furthermore, photosensitive chip quantity is 5, the light path is integrated the mirror group and is the cube prism by a plurality of sub-prism amalgamation, just the sub-prism is by on any one face of cube, gets the geometric center of two adjacent summits and face center and cube, the tetrahedron prism that four points constitute, 5 photosensitive chip are respectively just 5 surfaces to the prism of cube, and apart from the distance diverse on surface, the 6 th face of cube prism is the image incident face, and the image incident face is just to taking the mirror group.

Furthermore, the splicing seams of each sub-prism spliced into the cubic prism are respectively provided with a semi-transparent and semi-reflective film.

The optical path adjusting lens group is arranged between the shooting lens group and the optical path integrating lens group and used for adjusting the imaging positions of the scene image surfaces with different depths of field.

Further, the optical path adjusting lens group is a lens group including a convex lens.

Furthermore, the relative position between the shooting lens group and the light path integrating lens group and/or between the light path integrating lens group and the photosensitive chip is adjustable.

Furthermore, the imaging unit is formed by arranging a plurality of transparent photosensitive chips layer by layer.

Further, the imaging unit comprises a plurality of half-transmitting and half-reflecting mirrors arranged along a straight line, each half-transmitting and half-reflecting mirror is correspondingly provided with a photosensitive chip arranged at an acute angle theta, and the distances from the single photosensitive chip to the corresponding half-transmitting and half-reflecting mirrors are different.

Furthermore, a plurality of photosensitive chips of the imaging unit can be partially replaced by a projection unit, so that the dual-function all-solid-state holographic shooting device capable of shooting and projecting is formed.

In order to solve the above technical problem, the present invention provides an all-solid-state holographic projector, which includes an imaging module and a projection lens set disposed inside the holographic projector;

the imaging module is used for providing a plurality of non-coincident or mutually parallel equivalent image planes, the distance between any two adjacent equivalent image planes is L (mm), the adjacent pixel interval on a single equivalent image plane is d (mm), and the following requirements are met: l is more than or equal to 2 d;

the projection lens group is used for projecting a plurality of equivalent image planes provided by the imaging module group and forming a 3D image picture with depth information in space.

Furthermore, the imaging module comprises a plurality of projection units, an image plane integration mirror group and a control chip electrically connected with the plurality of projection units;

the projection unit is used for projecting images to the image plane integration mirror group;

the image plane integration lens group is used for outputting projection light of the projection unit to the projection lens group after optical conversion;

the control chip is used for controlling the projection picture content of the projection unit;

the projection light of the projection unit is optically converted through the image plane integration mirror group, the actual effect is equivalent to that a plurality of non-coincident or mutually parallel equivalent image planes are formed on one side of the projection mirror group, the equivalent image planes are converted through the light path of the projection mirror group to form image planes in space, and the plurality of image planes form a 3D image picture with depth information.

Furthermore, the image plane integration mirror group is a cube prism formed by splicing a plurality of sub-prisms, a single projection unit corresponds to one side surface of the image plane integration mirror group, and the distances between each projection unit and the corresponding side surface of the image plane integration mirror group are different.

Furthermore, the number of the projection units is 3, the image plane integration mirror group is an X-shaped combiner prism, the X combiner prism is formed by splicing 4 sub-prisms with isosceles right triangles in cross section, the cross section of each sub-prism is square, the 3 projection units are respectively positioned on one side of three outer surfaces of the X combiner cube prism, the outer surfaces of the three projection units are perpendicular to the cross section of the X combiner cube prism, the distances between the 3 projection units and the corresponding side surfaces of the X combiner cube prism are different, the fourth outer surface of the X combiner cube prism, which is perpendicular to the cross section of the X combiner cube prism, is an emergent surface, and the emergent surface is opposite to the projection mirror group.

Furthermore, the number of the projection units is 5, the image plane integration mirror group is a cube prism formed by splicing a plurality of sub-prisms, the sub-prisms are tetrahedral prisms formed by taking two adjacent vertexes, a face center and a geometric center of the cube on any face of the cube, the 5 projection units are respectively opposite to 5 outer surfaces of the prism of the cube, the distances from the surfaces are different, the sixth face of the cube prism is an emergent face, and the emergent face is opposite to the projection mirror group.

Further, the imaging device further comprises a light path adjusting mirror group arranged between the imaging module and the projection mirror group and used for converting and moving the spatial position of the equivalent image surface.

Furthermore, the relative position between the imaging module and the projection lens group and/or between the projection unit and the image plane integration lens group is adjustable.

Furthermore, the imaging module is formed by arranging a plurality of transparent display screens layer by layer.

Furthermore, the imaging module comprises a plurality of semi-transparent semi-reflecting mirrors arranged along a straight line, each semi-transparent semi-reflecting mirror is correspondingly provided with a projection unit arranged at an acute angle theta, and the distance between each projection unit and each semi-transparent semi-reflecting mirror is different.

Furthermore, a plurality of projection units in the imaging module can be partially replaced by photosensitive units to form the dual-function all-solid-state holographic projector which can project and shoot.

Compared with the prior art, the invention has the advantages that:

in the working process of the all-solid-state holographic shooting device, moving parts are not needed, so that the reliability and the image quality are greatly improved, and the production cost and the control difficulty are reduced;

the all-solid-state holographic shooting device respectively forms real image pictures on different photosensitive units and records the real image pictures through the imaging units and the optical conversion of the imaging units, so that real 3D picture information is recorded;

although the all-solid-state hologram camera is used for 3D shooting, the all-solid-state hologram camera can be downward compatible with a 2D shooting function;

the all-solid-state holographic shooting device can realize simultaneous shooting and projection display, is convenient to be used in application occasions with the dual-function requirement of shooting and projection, greatly reduces the complexity of the system and reduces the cost.

The all-solid-state holographic projector realizes the real 3D image projection function by introducing a scheme of a plurality of equivalent image planes. Because the equivalent image surfaces are distributed at different depths in space, the projected image is accompanied by depth information, and real 3D display content can be provided for a user by matching with a holographic screen;

in the invention, no moving part is needed in the working process of the all-solid-state holographic projector, so that the reliability and the image quality are greatly improved, the production cost and the control difficulty are reduced, and the whole movement of the display field depth range can be realized by adjusting;

when the all-solid-state holographic projector is applied, the eyes need to dynamically adjust the focal depth as the eyes watch real objects, but the fixed focal depth of the common 2D display picture is not needed, so that the all-solid-state holographic projector does not cause visual fatigue and is beneficial to protecting eyesight.

The all-solid-state holographic projector can realize the functions of projection and shooting at the same time, is convenient for outputting picture information and receiving external image information in real time during practical application, and can identify user interaction and expression information while displaying.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an internal structure of an all-solid-state hologram according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the present invention with an optical path adjusting lens group 4;

FIG. 3 is a schematic diagram of the spatial position of the light path adjusting mirror assembly 4 converting the equivalent photosensitive surface 3;

FIG. 4 is a schematic view showing the combination of the image forming units 2 in embodiment 1 in which the number of the photosensitive chips 21 is 2;

FIG. 5 is a schematic view showing the combination of the image forming units 2 in example 1 in which the number of the photosensitive chips 21 is 3;

fig. 6 is a schematic view of a hexahedral X combining prism structure in embodiments 1 and 2;

FIG. 7 is a schematic view showing the combination of the image forming units 2 in example 1 in which the number of the photosensitive chips 21 is 5;

FIG. 8 is a schematic diagram of a sub-prism structure constituting the optical path assembly 22 of example 3;

FIG. 9 is a schematic view of an assembly of the image forming unit 2 described in embodiment 4;

FIG. 10 is a schematic view of a combination of the image forming units 2 described in embodiment 5;

FIG. 11 is a schematic view of another combination of the image forming units 2 described in embodiment 5;

FIG. 12 is a schematic diagram of an internal structure of an all-solid-state holographic projector according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of an embodiment of the present invention with an optical path adjusting lens group 10;

fig. 14 is a schematic view of the spatial position of the equivalent image plane 8 transformed by the optical path adjusting mirror group 10;

fig. 15 is a schematic combination diagram of the imaging module 6 according to embodiment 6, in which the number of the projection units 61 is 2;

fig. 16 is a combination diagram of the imaging module 6 according to embodiment 7 with 3 projection units 61;

fig. 17 is a schematic view of the hexahedral X combining prism structure in

embodiments

6 and 7;

FIG. 18 is a schematic view of an assembly of 5 projection units 61 in the imaging module 6 according to the embodiment 8;

FIG. 19 is a schematic diagram of sub-prisms of the image plane integrator 62 according to example 8;

fig. 20 is a schematic view of an assembly of the imaging module 6 according to embodiment 9;

fig. 21 is a schematic assembled view of the imaging module 6 according to embodiment 10;

fig. 22 is another schematic combination diagram of the imaging module 6 described in embodiment 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1 to 11, the present invention provides an all-solid-state holograph device, comprising a photographing lens group 1 and an imaging unit 2 arranged inside the holograph device;

wherein the photographing lens group 1 is used for capturing the light of a scene;

the imaging unit 2 comprises a plurality of photosensitive chips 21, and after light rays of scene image surfaces on different depths of field are optically converted by the shooting lens group 1 and the imaging unit 2, real image pictures of the scene on the different depth of field image surfaces are respectively formed on the photosensitive chips 21 at corresponding distances and recorded;

wherein the adjacent pixel interval that forms the real image picture on the photosensitive chip 21 is d (mm), that is also the adjacent pixel interval is d (mm) on the photosensitive chip 21, a plurality of photosensitive chips 21 are equivalent to a set of equivalent photosurface 3 that is parallel to each other that corresponds with shooting mirror group 1, equivalent photosurface 3 can be true physical photosurface, also can be the virtual image face of the physical photosurface that forms after the light path conversion, can also be real image face etc. the distance between arbitrary two adjacent equivalent photosurfaces 3 is L (mm), satisfy: l is more than or equal to 2 d.

The pitch L between adjacent equivalent photosensitive surfaces 3 determines the resolution of the image of the hologram in the depth direction, and the pixel pitch d on any one of the equivalent photosensitive surfaces 3 determines the lateral resolution of the image, i.e., the planar resolution.

Generally, the depth resolution of human eyes is far lower than the transverse resolution, so that resolution distortion cannot be caused even if the pixel pitch in the depth direction is large, and therefore the pixel pitch of a shot picture in the depth direction can be set to be larger, so that a very real 3D picture can be shot under the condition of effectively reducing equipment and process cost.

In order to reduce the number of image planes in the depth direction as much as possible and reduce the complexity of the system, the ratio of the pixel pitch in the depth direction to the horizontal pixel pitch, i.e., the ratio of L to d, can be enlarged as much as possible, and the specific effects are as follows:

when L is more than or equal to 10d and more than or equal to 2d, the complexity of the system can be effectively reduced, and meanwhile, the fineness of the image quality in the depth direction is ensured;

when L is more than 10d and is more than or equal to 20d, the complexity of the system can be further reduced, and meanwhile, the image quality in the depth direction is still fine;

when L is more than 20d for 30d or more, the system complexity is moderate, and meanwhile, the image quality in the depth direction is slightly rough, but a better depth information display effect can still be achieved;

when L is more than 30d and is more than or equal to 40d, the system complexity is low, but the image quality in the depth direction is rough, and the depth information display effect can still be realized;

when L is larger than 40d, the system complexity can be greatly simplified, and necessary depth information is provided;

when the ratio of the two images is further increased, the number of the image planes in the depth direction can be effectively reduced, the visible resolution of the 3D image in the depth direction is still kept, the larger the ratio is, the poorer the detail expression capability in the depth direction is, and the image quality can be adjusted according to the situation in practical application.

As a preferred scheme, the imaging unit 2 further comprises an optical path integrating mirror group 22, and the positional relationship between the optical path integrating mirror group 22 and the plurality of photosensitive chips 21 satisfies the optical imaging principle, and is used for optically converting the scene image planes with different depths of field into real image pictures;

after the light rays of the scene image surfaces at different depths of field are optically converted by the photographing lens group 1 and the optical path integrating lens group 22, the scene image surfaces at different depths of field are imaged on the photosensitive chips 21 at corresponding depths of field respectively, which is equivalent to imaging on the equivalent photosensitive surfaces 3 corresponding to the photosensitive chips 21.

Preferably, the optical path integrating mirror group 22 is a cubic prism formed by splicing a plurality of sub-prisms, the single photosensitive chip 21 corresponds to one side surface of the optical path integrating mirror group 22, and the scene image surface light rays with different depths of field are optically converted by the optical path integrating mirror group 22, i.e. reflected by the plurality of sub-prisms, and are imaged on the photosensitive chip 21 with the corresponding depth of focus.

It should be noted that only the photosensitive chips 21 with appropriate focal depth can form a clear image, and in order to correspond the depth of field information of the scene to the focal depth of the photosensitive chips 21 and to achieve depth of field recording, the distances from each photosensitive chip 21 to the optical path integrating mirror 22 should be different.

In order to optimize the light path conversion effect of the light path integrating mirror group 22, a semi-transparent and semi-reflective film is arranged at the splicing seam of each sub-prism spliced into the cubic prism;

when the optical path integrating lens assembly 22 is used to convert the optical path of the light of the scene, the real image may deviate from the ideal imaging range. Then, the equivalent photosensitive surface 3 can be converted to an ideal imaging interval by introducing a light path adjusting mirror group 4, and in the simplest manner, a mirror group including a convex lens can be used, and an image plane on one side of the convex lens is converted to the other side by using the optical imaging rule of the mirror group. In practical applications, the imaging quality of a single convex lens is relatively poor, a series of optical elements for correcting aberrations, such as concave lenses, can be added, and the specific implementation manner can refer to a more mature solution in the industry (for example, refer to the design of a multi-lens camera lens), which is not described herein again.

The holographic camera of the present invention further has a focusing function, for example, by adjusting the relative position between the photosensitive chip 21 and the optical path integrating lens group 22 or adjusting the relative position between the photographing lens group 1 and the imaging unit 2, so that a part of adjusting mechanisms can be respectively added between the photographing lens group 1 and the optical path integrating lens group 22 and/or between the optical path integrating lens group 22 and the photosensitive chip 21 to achieve the above-mentioned focusing function, and the adjusting mechanisms can be various, and are not limited herein, and can be specifically determined according to the actual situation.

The imaging unit 2 can be directly formed by arranging a plurality of transparent photosensitive chips layer by layer, and the transparent photosensitive chips can penetrate through each other, so that each layer of transparent photosensitive chip can correspond to the scene image planes with different depths of field to independently form 3D real image pictures with different depths of field, the 3D shooting effect is realized, and each photosensitive chip can be equivalently regarded as an equivalent photosensitive surface 3. The transparent photosensitive chip can adopt an optical switch array mode provided by patents with the numbers of CN103926691B and CN 103984089B.

The imaging unit 2 may also adopt a combination of: including a plurality of half transmitting and half reflecting mirror 5 along a straight line setting, every half transmitting and half reflecting mirror 5 corresponds and is equipped with a sensitization chip 21 of arranging rather than forming acute angle theta, and the distance of single sensitization chip 21 apart from the half transmitting and half reflecting mirror 5 that corresponds is diverse, and during concrete setting, sensitization chip 21 can be located half transmitting and half reflecting mirror 5's top, also can be located half transmitting and half reflecting mirror 5's below, and the theta scope is 30 ~ 60, preferred 45.

The present invention will be described in further detail with reference to the following examples:

example 1

Photosensitive chip 21 quantity is 2, light path integration mirror group 22 is a hexahedral X combination prism, prismatic mirror concatenation that is isosceles right triangle by 4 cross sections forms and the cross section is the square, the inside amalgamation seam department of X combination prism is equipped with half-transparent and half-reflecting membrane, 2 photosensitive chip 21 is located two oppositions of X combination prism respectively, rather than cross section vertically surface one side, and 2 photosensitive chip 21 is apart from the corresponding side interval diverse of X combination prism, the rest two of X combination prism is the image incident surface rather than one of cross section vertically surface, and the image incident surface is just to shooting mirror group 1. The actual effect is equivalent to arranging 2 parallel non-shielded equivalent photosurfaces 3 behind the image incidence plane: the structure is similar to the color combining prism of the traditional projector, but has obvious difference, the film coating at the seam of the color combining mirror is a selective reflecting film, for example, only red light or green light is reflected, the invention adopts a semi-transparent semi-reflective film without linear selectivity, and the three color pictures of the color combining mirror need to be superposed to form a color picture, and the invention can form the real image picture of the scene image surface corresponding to the depth information on each photosensitive chip 21 of the scene with the depth information.

Example 2

Photosensitive chip 21 quantity is 3, light path integration mirror group 22 is a hexahedron X combination prism and is formed by 4 cross sections for isosceles right triangle's prism concatenation and the cross section is the square, the inside amalgamation seam department of X combination prism is equipped with semi-transparent semi-reflecting membrane, 3 photosensitive chip 21 is located 3 of X combination prism respectively rather than cross section vertically surface one side, and 3 photosensitive chip 21 is apart from the corresponding side interval diverse of X combination prism, the 4 th of X combination prism rather than cross section vertically surface is the image incident surface, and the image incident surface is just to shooting mirror group 1. In practice, as 3 parallel and non-blocking equivalent photosensitive surfaces 3 are arranged behind the image incidence surface, the distances between the surfaces of the photosensitive chips 21 and the X combining prism are different, so that the formed equivalent photosensitive surfaces 3 are not overlapped. The light rays of the scene image surface with different depths of field directly pass through the shooting lens group 1, and then real image pictures of the scene image surface with the corresponding depths of field are respectively formed on the three parallel non-shielded equivalent photosensitive surfaces 3.

Example 3

The number of the photosensitive chips 21 is 5, the optical path integration mirror group 22 is a cube prism formed by splicing a plurality of sub-prisms, the sub-prisms are formed by any one face of the cube, two adjacent vertexes, a face center and a geometric center of the cube are taken, the tetrahedral prism is formed by four points, the splicing seams inside the cube prism are respectively provided with a semi-transparent and semi-reflective film, the 5 photosensitive chips 21 are respectively opposite to 5 faces of the cube prism, the distances between the photosensitive chips and the surfaces are different, the 6 th face of the cube prism is an image incidence face, and the image incidence face is opposite to the shooting mirror group 1. The actual effect is equivalent to arranging 5 equivalent photosensitive surfaces 3 parallel to each other behind the image entrance surface.

The form of the optical path integrating mirror group 22 should match the number of the photosensitive chips 21, and when a larger number (greater than 6) of photosensitive chips 21 are used for shooting, the optical path integrating mirror group 22 may be a polyhedral cubic structure formed by splicing a plurality of sub-prisms, and the number of the outer surfaces of the polyhedral cubic structure is greater than 7.

It should be noted that the cube prisms and the joints of the sub-prisms used in the above embodiments 1 to 3 are all provided with the half-transmitting and half-reflecting film, which is a preferred embodiment, and is not a limitation to the present invention, and the photographing effect of the present invention can be achieved without providing the half-transmitting and half-reflecting film at the joints of the sub-prisms.

Example 4

The imaging unit 2 is formed by arranging 5 transparent photosensitive chips layer by layer and can penetrate through each other, so that each layer of transparent photosensitive chip can correspond to a scene image surface with different depths of field to independently form 3D real image pictures with different depths of field to realize the effect of 3D shooting, and each photosensitive chip can be equivalently regarded as an equivalent photosensitive surface 3.

Example 5

The imaging unit 2 comprises 5 half mirrors 5 arranged along a straight line, each half mirror 5 is correspondingly provided with a photosensitive chip 21 arranged at 45 degrees with the half mirror 5, and the distances from the single photosensitive chip 21 to the corresponding half mirrors 5 are different.

After the light rays of the scene image planes with different depths of field are optically converted by the half-transmitting and half-reflecting mirror 5, a real image picture of the scene image plane corresponding to the depths of field is formed on a corresponding photosensitive chip 21, and the actual effect is equivalent to that the scene object light rays are directly imaged on a plurality of parallel non-shielded equivalent photosensitive surfaces 3 on one side of the half-transmitting and half-reflecting mirror group opposite to the scene.

The half mirror 5 does not need to have a strict transmittance and reflectance equal to 50%, and the values of the transmittance and the reflectance can be flexibly adjusted according to actual needs, for example, the specific values of the transmittance and the reflectance can be determined according to the definition of the picture.

As can be seen from the above description, the imaging principle of the all-solid-state hologram camera provided by the present invention is as follows:

after the image surfaces of the scenery with different depths of field are subjected to light path conversion through the photographing lens group 1 and the light path integrating lens group 22, a real image of a certain depth of field image surface of the scenery is formed on the photosensitive chip 21 corresponding to the depth of focus, and the 3D photographing effect is realized.

Although the all-solid-state holographic shooting device is used for shooting 3D pictures, a projection and camera shooting dual-function system can be realized by replacing part of the photosensitive chip 21 with a projection unit, so that the all-solid-state holographic shooting device has a projection function while shooting, and the functions of the system are further expanded.

Furthermore, when the all-solid-state holographic shooting device shoots the scenery, because objects with different depth of field can form images on the corresponding photosensitive surfaces, the function of real-time focusing can be realized during shooting, and the focusing time is not needed.

Further, referring to fig. 12 to 22, the present invention provides an all-solid-state holographic projector, including an imaging module 6 and a projection lens group 7 disposed inside the holographic projector;

wherein imaging module 6 is used for providing a plurality of not coincide or equivalent image planes 8 that are parallel to each other, and equivalent image plane 8 can be the real image plane of physics also can be virtual image plane or real image plane etc. that obtain through optical transformation, and the distance between two arbitrary adjacent equivalent image planes 8 is L (mm), and the adjacent pixel interval is d (mm) on the single equivalent image plane 8, satisfies: l is more than or equal to 2 d;

the pitch L between adjacent equivalent image planes 8 determines the resolution of the projected picture of the holographic projector in the depth direction, while the pixel pitch d on any one of the equivalent image planes 8 determines the lateral resolution of the picture, i.e. the planar resolution.

Generally, the depth resolution of human eyes is far lower than the transverse resolution, so that even if the pixel distance in the depth direction is larger, the resolution distortion cannot be caused, and therefore, the pixel distance of a projection picture in the depth direction can be set to be larger, so that a very real 3D picture can be projected under the condition of effectively reducing equipment and process cost.

when L is more than 40d, the system complexity can be greatly simplified, and necessary depth information is provided;

The projection lens group 7 is used for projecting a plurality of equivalent image planes 8 provided by the imaging module group 6, and forming a 3D image picture with depth information in space.

As a preferable scheme, the imaging module 6 includes a plurality of projection units 61, an image plane integration mirror group 62, and a control chip 63 electrically connected to the plurality of projection units 61;

the projection unit 61 is used for projecting images to the image plane integration mirror group 62, and is equivalent to an imaging structure of a common projection instrument in the prior art, and comprises a light source, a liquid crystal chip and the like;

the image plane integration mirror group 62 is used for optically transforming the projection light of the projection unit 61 to the projection mirror group 7;

the control chip 63 is used for controlling the projection picture content of the projection unit 61;

the image plane integration mirror group 62 is preferably a cubic prism formed by splicing a plurality of sub-prisms, the single projection unit 61 corresponds to one side surface of the image plane integration mirror group 62, and the distances between each projection unit 61 and the corresponding side surface of the image plane integration mirror group 62 are different;

in order to optimize the light path conversion effect of the image plane integration mirror group 62, a semi-transparent and semi-reflective film is arranged at the splicing seam of each sub-prism spliced into the cubic prism;

the projected light of each projection unit 61 is reflected by the semi-transparent and semi-reflective film at the joint of the plurality of sub-prisms of the image plane integration mirror group 62, the actual effect is equivalent to that a plurality of non-coincident or mutually parallel equivalent image planes 8 are formed on one side of the projection mirror group 7, the equivalent image planes 8 are transformed in space through the light path of the projection mirror group 7 to form an image plane 9, and the plurality of image planes 9 form a 3D image with depth information.

The imaging module 6 may be formed by directly arranging a plurality of transparent display devices layer by layer, for example, a plurality of transparent OLED (or LCD or Micro LED) display screens may be used and arranged in parallel to each other, so that each layer of transparent display may form a respective imaging surface in space and may penetrate each other at the same time, so as to form 3D picture slices with different depths of field in space, thereby achieving a 3D display effect, and each transparent display device may be equivalently regarded as an equivalent image plane 8;

when the image plane integrating mirror group 62 is used to perform optical path transformation on the projection light of the projection unit 61, the distance between the equivalent image plane 8 and the projection mirror group 7 may deviate from the ideal imaging interval, so that the equivalent image plane 8 can be transformed to the ideal imaging interval of the projection mirror group 7 by introducing an optical path adjusting mirror group 10, and therefore, the optical path adjusting mirror group 10 for transforming and moving the spatial position of the equivalent image plane 8 is arranged between the imaging module 6 and the projection mirror group 7, and in the simplest form, a mirror group containing convex lenses can be used, and the image plane on one side of the convex lenses is transformed to the other side by using the optical imaging rule thereof. In practical application, the imaging quality of a single convex lens is relatively poor, a series of optical elements for correcting aberration, such as concave lenses, can be added, and a specific implementation manner can refer to a more mature solution in the industry (for example, refer to a design of a camera multi-lens), which is not described herein.

The holographic projector of the present invention further has a focusing function, which is realized by adjusting the relative position between the imaging module 6 and the projection lens assembly 7 or between the projection unit 61 and the image plane integrating lens assembly 62, or by adjusting the relative position between the imaging module 6, the projection lens assembly 7 and the image plane integrating lens assembly 62, and a part of adjusting mechanisms can be respectively added between the imaging module 6 and the projection lens assembly 7 and/or between the projection unit 61 and the image plane integrating lens assembly 62 to realize the above adjusting function, and the adjusting mechanisms can be various, and are not limited herein, and can be specifically determined according to the actual situation.

In practical use, the position of the reference focal plane can be adjusted through zooming, for example, the reference focal plane (such as the nearest projection plane) can be set between 50cm and 1m away from a user for a desktop office scene, the reference focal plane can be set between 10m and 20m for living room audio and video, and the like.

The imaging module 6 can also adopt the following combination: the projection device comprises a plurality of half mirrors 11 arranged along a straight line, each half mirror 11 is correspondingly provided with a projection unit 61 arranged at an acute angle theta, the distance between each group of projection units 61 and the half mirror 11 is different, the included angle between each half mirror 11 and each projection unit 61 is theta, when the projection device is specifically arranged, each projection unit 61 can be positioned above the half mirror 11 and below the half mirror 11, the theta range is 30-60 degrees, and the theta range is preferably 45 degrees.

example 6

Projection unit 61 quantity is 2, image plane integration mirror group 62 is hexahedral X path prism, the prismatic mirror concatenation that is isosceles right triangle by 4 cross sections forms and the cross section is the square, X path prism inside amalgamation seam department is equipped with half-transparent and half-reflecting membrane, 2 projection unit 61 is located two of X path prism respectively relative, surface one side perpendicular to its cross section, and 2 projection unit 61 is apart from the corresponding side interval diverse of X path prism, one of the other two of X path prism and its cross section perpendicular surface is the exit surface, and the exit surface is just to projection mirror group 7. In practice, as two parallel equivalent image planes 8 are arranged behind the emergent surface, after the two parallel equivalent image planes 8 are directly converted through the light path of the projection lens group 7, two image planes 9 corresponding to the two equivalent image planes 8 are formed in space, and the two image planes 9 form a 3D image frame with depth information.

The equivalent image surfaces 8 formed by the different surface distances of the projection unit 61 and the X-shaped combining prism are not superposed, the structure is similar to the color combining prism of the traditional projector, but has obvious difference, the coating film at the joint of the color combining prism is a selective reflection film, for example, only red light or green light is reflected, but the invention adopts a semi-transparent semi-reflection film, has no light selectivity, the three color images of the color combining prism need to be superposed to form a color image, and each image surface of the invention is not superposed to form a plurality of images with depth information.

Example 7

Projection unit 61 quantity is 3, image plane integration mirror group 62 is a hexahedral X combination prism and is formed by 4 cross sections for isosceles right triangle's prism concatenation and the cross section is the square, X combination prism inside amalgamation seam department is equipped with half-transparent and half-reflecting membrane, 3 projection unit 61 is located three rather than cross section vertically surface one side of X combination prism respectively, and 3 projection unit 61 is different apart from the corresponding side interval of X combination prism, X combination prism's fourth is the exit surface rather than cross section vertically surface, and the exit surface is just to projection mirror group 7. In practice, as if 3 parallel equivalent image planes 8 are arranged behind the exit surface, 3 parallel equivalent image planes 8 directly pass through the light path conversion of the projection lens group 7, and then 3 image planes 9 corresponding to the 3 equivalent image planes 8 are formed in space, and since the surface distances between the projection unit 61 and the X combining prism are different, the formed image planes 9 are not overlapped, and the equivalent 3 equivalent image planes 8 are also not overlapped, so that the 3 image planes 9 form a 3D image frame with depth information.

Example 8

The number of the projection units 61 is 5, the image plane integration mirror group 62 is a cube prism formed by splicing a plurality of sub-prisms, the sub-prisms are made of any one face of the cube, two adjacent vertexes, a face center and a geometric center of the cube are taken, the tetrahedral prism is composed of four points, a semi-transparent semi-reflective film is arranged at a splicing seam inside the cube prism, the 5 projection units 61 are respectively opposite to 5 faces of the cube prism, the distances between the projection units and the faces are different, a sixth face of the cube prism is an emergent face, and the emergent face is opposite to the projection mirror group 7. In practice, as 5 parallel equivalent image planes 8 are arranged behind an exit surface, 5 parallel equivalent image planes 8 are directly converted through a light path of the

projection lens group

7, and 5 image planes 9 corresponding to the 5 equivalent image planes 8 are formed in space, and as the surface distances between the projection unit 61 and the X combining prism are different, the formed image planes 9 are not overlapped, and the 5 equivalent image planes 8 are also not overlapped, the 5 image planes 9 form a 3D image with depth information.

It should be noted that the form of the image plane integration mirror group 62 should match the number of the projection units 61, and when a larger number (greater than 6) of projection units 61 are used for projection imaging, the image plane integration mirror group 62 may be a polyhedral cubic structure formed by splicing a plurality of sub-prisms, and the number of the outer surfaces of the polyhedral cubic structure is greater than 7.

The semi-transparent and semi-reflective film is disposed inside the cubic prisms and at the splicing position of each sub-prism in the embodiments 6 to 8, which is a preferred embodiment, and is not a limitation to the present invention, and the projection effect of the present invention can also be achieved without disposing the semi-transparent and semi-reflective film at the splicing position of each sub-prism.

Example 9

The imaging module 6 is formed by arranging a plurality of transparent OLED display screens layer by layer, each OLED display screen is not shielded and can penetrate through each other, a picture displayed by a single OLED display screen can form respective image surfaces 9 in space after being converted by the projection lens group 7, the image surfaces 9 are equivalent to 3D picture slices with different depths of field, each OLED display screen is correspondingly formed with one image surface 9 with different depths of field, and a plurality of image surfaces 9 form a complete 3D image.

Wherein the OLED display screen may be replaced by other transparent display devices, such as LCD display screens and the like.

The OLED display screen of this embodiment 9 arranged layer by layer corresponds to a plurality of equivalent image planes 8 that are not coincident or parallel to each other.

Example 10

The imaging module 6 comprises 5 semi-transparent and semi-reflective mirrors 11 arranged along a straight line, each semi-transparent and semi-reflective mirror 11 is correspondingly provided with a projection unit 61 which forms an included angle of 45 degrees with the semi-transparent and semi-reflective mirror, and the distance between each projection unit 61 and the semi-transparent and semi-reflective mirror 11 is different.

The projection unit 61 is transformed by the corresponding half mirror 11 to form a plurality of parallel image planes 9 in the space, the plurality of image planes 9 constitute a 3D image with depth information, the actual effect is equivalent to that a plurality of parallel equivalent image planes 8 are arranged on one side of the half mirror, and the plurality of parallel equivalent image planes 8 are transformed by the optical path of the projection lens group 7 directly to form the 3D image with depth information in the space.

The transmittance and reflectance of the half mirror 11 are not required to be strictly equal to 50%, and the values of the transmittance and reflectance can be flexibly adjusted according to actual needs, for example, the specific values of the transmittance and the reflectance can be determined according to the definition of the picture.

From the above description, the imaging principle of the all-solid-state holographic projector provided by the present invention is as follows:

the projection light of the plurality of projection units 61 is optically transformed by the image plane integrating mirror group 62 and the projection mirror group 7 to form a plurality of parallel image planes 9 corresponding to the projection units 61 in space, the plurality of parallel image planes 9 form a 3D projection picture with depth information, and the formed 3D projection picture with depth information is equivalent to a group of parallel equivalent image planes 8 directly optically transformed by the projection mirror group 7.

The all-solid-state holographic projector provided by the invention realizes the real 3D image projection function by introducing a plurality of equivalent image planes 8. Because the equivalent image surfaces are distributed at different depths in space, the projected images are accompanied by depth information, and real 3D display content can be provided for users by matching with the holographic screen. The invention does not need moving parts in the working process, greatly improves the reliability and the image quality, and simultaneously reduces the production cost and the control difficulty.

Although the all-solid-state holographic projector provided by the invention is used for providing a 3D projection picture, a projection and camera shooting dual-function system can be realized by replacing part of the projection unit 61 with a photosensitive imaging unit, so that the projection and camera shooting dual-function system has a shooting function at the same time of projection, the functions of the system are further expanded, and interactive action information of a user can be read while displaying.

The multi-stage multi-image plane imaging module can also be formed by combining and cascading several optical path integration modes provided by the invention, for example, in the embodiment, 5 image planes pass through one image plane integration mirror group again in the mode of 5 image planes, so that 5 × 5-25 image planes are formed.

The invention is preferably applied in an in-situ holographic display system (see patent application No. 2019108759751). In on-the-spot holographic display system, cooperate holographic display screen, can assemble into the 3D picture that converges that can be observed by people's eye direct observation again the 3D picture that diverges that the holographic projector throws, this kind of mode not only can realize real 3D and show, and can realize bore hole display effect completely, need not dress special auxiliary assembly, can make simultaneously pull open the certain distance (the distance can set up and be greater than 5cm, for example can set up at 10cm ~ 30 cm's comfortable interval, or bigger distance) between holographic projector and the people's eye, make the user can very comfortable watch the 3D picture.

The above detailed description of the all-solid-state holographic shooting device and all-solid-state holographic projector provided by the present invention, and the specific examples applied herein have been described to explain the principle and the implementation of the present invention, the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

An all-solid-state hologram, characterized in that: comprises a shooting lens group (1) and an imaging unit (2) which are arranged in a holographic shooting device;

the photographing lens group (1) is used for capturing light of a scene;

the imaging unit (2) comprises a plurality of photosensitive chips (21), and light rays of scene image surfaces on different depths of field are optically converted by the shooting lens group (1) and the imaging unit (2), and real image pictures of the scene on the photosensitive chips (21) at corresponding distances and different depth of field image surfaces are formed and recorded;

the distance between adjacent pixels forming a real image picture on the photosensitive chips (21) is d (mm), the photosensitive chips (21) are equivalent to a group of mutually parallel equivalent photosensitive surfaces (3) corresponding to the shooting mirror group (1), and the distance between any two adjacent equivalent photosensitive surfaces (3) is L (mm), so that the following requirements are met: l is more than or equal to 2 d.
An all-solid-state hologram according to claim 1, wherein: the imaging unit (2) further comprises an optical path integrating mirror group (22), and the position relation between the optical path integrating mirror group (22) and the photosensitive chips (21) meets the optical imaging principle and is used for optically converting scene image surfaces with different depths of field into real image pictures;

after light rays of the scene image surfaces on different depths of field are optically converted by the shooting lens group (1) and the light path integrating lens group (22), the scene image surfaces on different depths of field are imaged on the photosensitive chips (21) with corresponding depths of focus respectively, and imaging on the equivalent photosensitive surfaces (3) corresponding to the photosensitive chips (21) is equivalent.
An all-solid-state hologram according to claim 2, wherein: the light path integration mirror group (22) is a cubic prism formed by splicing a plurality of sub-prisms, and the single photosensitive chip (21) corresponds to one side surface of the light path integration mirror group (22) respectively;

the scene image surface light rays with different depths of field are reflected by a plurality of sub-prisms of the optical path integrating mirror group (22) and are respectively imaged on the photosensitive chip (21) with corresponding depths of focus.
An all-solid-state hologram according to claim 3, wherein: the number of the photosensitive chips (21) is 3, the optical path integration mirror group (22) is an X combination prism, the X combination prism is formed by splicing 4 sub-prisms with cross sections in the shape of isosceles right triangles, the cross sections of the sub-prisms are square, the 3 photosensitive chips (21) are respectively positioned on one side of the outer surface of the X combination prism, which is vertical to the cross sections of the 3 photosensitive chips, the distances between the 3 photosensitive chips (21) and the corresponding side surfaces of the X combination prism are different, the 4 th outer surface of the X combination prism, which is vertical to the cross sections of the 4 th photosensitive chip, is an image incidence surface, and the image incidence surface is just opposite to the shooting mirror group (1).
An all-solid-state hologram according to claim 3, wherein: photosensitive chip (21) quantity is 5, light path integration mirror group (22) is the cube prism that becomes by a plurality of subprisms amalgamation, just the subprism is by on any one face of cube, gets the geometric center of two adjacent summits and face heart and cube, the tetrahedron prism that four points constitute, 5 photosensitive chip (21) respectively just 5 surfaces to the prism of cube, and the distance diverse from the surface, the 6 th face of cube prism is the image incident face, and the image incident face is just to taking lens group (1).
An all-solid-state hologram according to any of claims 3 to 5, wherein: the splicing seam of each sub-prism spliced into the cubic prism is provided with a semi-transparent semi-reflective film.
An all-solid-state hologram according to claim 1 or 2, wherein: the optical path adjusting lens group (4) is arranged between the shooting lens group (1) and the optical path integrating lens group (22), and the optical path adjusting lens group (4) is used for adjusting the imaging positions of the scene image surfaces with different depths of field.
An all-solid-state hologram according to claim 6, wherein: the light path adjusting lens group (4) is a lens group comprising a convex lens.
An all-solid-state hologram according to claim 3, wherein: the relative position between the shooting mirror group (1) and the light path integration mirror group (22) and/or between the light path integration mirror group (22) and the photosensitive chip (21) is adjustable.
An all-solid-state hologram according to claim 1, wherein: the imaging unit (2) is formed by arranging a plurality of transparent photosensitive chips layer by layer.
An all-solid-state hologram according to claim 1, wherein: imaging element (2) include by a plurality of transflective mirror (5) that set up along a straight line, every transflective mirror (5) correspond be equipped with one rather than become sensitization chip (21) that acute angle theta arranged, and single sensitization chip (21) apart from the distance diverse of corresponding transflective mirror (5).
An all-solid-state hologram according to claim 1, wherein: the multiple photosensitive chips (21) of the imaging unit (2) can be partially replaced by a projection unit to form a dual-function all-solid-state holographic shooting device capable of shooting and projecting.
An all-solid-state holographic projector, comprising: comprises an imaging module (6) and a projection lens group (7) which are arranged in the holographic projector;

the imaging module (6) is used for providing a plurality of non-coincident or mutually parallel equivalent image planes (8), the distance between any two adjacent equivalent image planes (8) is L (mm), the adjacent pixel pitch on a single equivalent image plane (8) is d (mm), and the following requirements are met: l is more than or equal to 2 d;

the projection lens group (7) is used for projecting a plurality of equivalent image surfaces (8) provided by the imaging module group (6) and forming a 3D image picture with depth information in space.
An all-solid-state holographic projector as claimed in claim 13, wherein: the imaging module (6) comprises a plurality of projection units (61), an image plane integration mirror group (62) and a control chip (63) electrically connected with the plurality of projection units (61);

the projection unit (61) is used for projecting pictures to the image plane integration mirror group (62);

the image plane integration mirror group (62) is used for outputting projection light of the projection unit (61) to the projection mirror group (7) after optical conversion;

the control chip (63) is used for controlling the projection picture content of the projection unit (61);

the projection light of the projection unit (61) is optically converted through an image plane integration mirror group (62), the actual effect is equivalent to that a plurality of non-coincident or mutually parallel equivalent image planes (8) are formed on one side of the projection mirror group (7), the equivalent image planes (8) are transformed in space through the light path of the projection mirror group (7) to form image planes (9), and the plurality of image planes (9) form a 3D image picture with depth information.
An all-solid-state holographic projector as claimed in claim 14, wherein: the image plane integration mirror group (62) is a cubic prism formed by splicing a plurality of sub-prisms, the single projection unit (61) corresponds to one side face of the image plane integration mirror group (62), and the distances between the side faces corresponding to the projection units (61) and the image plane integration mirror group (62) are different.
An all-solid-state holographic projector as claimed in claim 14, wherein: the number of the projection units (61) is 3, the image plane integration mirror group (62) is an X-shaped combiner prism, the X combiner prism is formed by splicing 4 sub-prisms with isosceles right triangles in cross section, the cross section of each sub-prism is square, the 3 projection units (61) are respectively positioned on one side of three outer surfaces, perpendicular to the cross section, of the X combiner cube prism, the distances between the 3 projection units (61) and the corresponding side surfaces of the X combiner cube prism are different, the fourth outer surface, perpendicular to the cross section, of the X combiner cube prism is an emergent surface, and the emergent surface is opposite to the projection mirror group (7).
An all-solid-state holographic projector as claimed in claim 14, wherein: the number of the projection units (61) is 5, the image plane integration mirror group (62) is a cube prism formed by splicing a plurality of sub-prisms, the sub-prisms are tetrahedral prisms formed by taking two adjacent vertexes, a face center and a geometric center of the cube on any face of the cube, the four points are arranged, the 5 projection units (61) are respectively just opposite to 5 outer surfaces of the prism of the cube, the distances from the surfaces are different, the sixth surface of the prism of the cube is an emergent surface, and the emergent surface is just opposite to the projection mirror group (7).
An all-solid-state holographic projector according to any of claims 15 to 17, wherein: and a semi-transparent and semi-reflective film is arranged at the splicing seam of each sub-prism spliced into the cubic prism.
An all-solid-state holographic projector as claimed in claim 13 or 14, wherein: the imaging device also comprises a light path adjusting mirror group (10) arranged between the imaging module (6) and the projection mirror group (7) and used for converting and moving the spatial position of the equivalent image surface (8).
An all-solid-state holographic projector according to claim 19, wherein: the light path adjusting lens group (10) is a lens group comprising a convex lens.
An all-solid-state holographic projector as claimed in claim 13, wherein: the relative position between the imaging module (6) and the projection lens group (7) and/or between the projection unit (61) and the image plane integration lens group (62) is adjustable.
An all-solid-state holographic projector as claimed in claim 13, wherein: the imaging module (6) is formed by arranging a plurality of transparent display screens layer by layer.
An all-solid-state holographic projector as claimed in claim 13, wherein: imaging module (6) include a plurality of semi-transparent semi-reflecting mirror (11) that set up along a straight line, every semi-transparent semi-reflecting mirror (11) correspond be equipped with one rather than become projection unit (61) that acute angle theta arranged, and every group throws the distance diverse between unit (61) and semi-transparent semi-reflecting mirror (11).
An all-solid-state holographic projector according to claim 14, wherein: the multiple projection units (61) in the imaging module (6) can be partially replaced by photosensitive imaging units to form a dual-function all-solid-state holographic projector which can project and shoot.