CN209525556U - Imaging arrangement, projection screen and optical projection system - Google Patents
Imaging arrangement, projection screen and optical projection system Download PDFInfo
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- CN209525556U CN209525556U CN201821816367.0U CN201821816367U CN209525556U CN 209525556 U CN209525556 U CN 209525556U CN 201821816367 U CN201821816367 U CN 201821816367U CN 209525556 U CN209525556 U CN 209525556U
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Abstract
Imaging arrangement, projection screen and optical projection system provided by the utility model, are related to technical field of imaging.Wherein, the imaging arrangement includes the resin layer being made of multiple lenticules, each described lenticule has at least one curved surface, so as to can spread in corresponding curved surface when beam Propagation to the lenticule.By above-mentioned setting, the problem for causing imaging effect poor because the diffusion effect of light beam is poor in existing imaging arrangement can be improved.
Description
Technical field
The utility model relates to technical field of imaging, are in particular to a kind of imaging arrangement, projection screen and projection
System.
Background technique
With the continuous development of screen display technology, projection obtains extensive as a kind of simple, convenient and fast display mode
Application, for example, the entertainment of family or office demand.Wherein, when being shown by projection, indispensable one
Equipment is exactly projection screen.Also, imaging arrangement is focused on as the key structure performance of imaging display in projection screen
The effect wanted.
Through inventor the study found that in existing projection screen, due to projector output beam Propagation to be imaged knot
The effect spread in this configuration when structure is poor, thus, there is a problem of that the imaging effect of the imaging arrangement is poor.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of imaging arrangement, projection screen and optical projection system, to change
The problem for being apt in existing imaging arrangement cause imaging effect poor because the diffusion effect of light beam is poor.
To achieve the above object, the utility model embodiment adopts the following technical scheme that
A kind of imaging arrangement, including the resin layer being made of multiple lenticules, each described lenticule has at least one
A curved surface, so as to can be spread in corresponding curved surface when beam Propagation to the lenticule.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, the resin layer includes multilayer
Structure, the multilayer minor structure are set gradually on the thickness direction of the resin layer, and each straton structure is in the resin
There is on the thickness direction of layer with a lenticule, on the length or width direction of the resin layer multiple set gradually
Lenticule.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, appoint in the multilayer minor structure
The refractive index of lenticule in adjacent two layers minor structure of anticipating is different, and the refractive index phase of each lenticule in same layer minor structure
Together.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, the multilayer minor structure includes more
The first minor structure of layer and the second minor structure of multilayer；
Wherein, first minor structure is different with the refractive index of the second minor structure, and two layers of first minor structures of arbitrary neighborhood
Between be provided between two layers one layer of second minor structure, arbitrary neighborhood of second minor structures and be provided with one layer of first minor structure.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, the lenticule is column structure,
The width direction of each lenticule in first minor structure is identical as the width direction of the resin layer, second minor structure
In each lenticule width direction it is vertical with the width direction of the resin layer.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, the lenticule is column structure,
The width direction of each lenticule in first minor structure is identical as the width direction of the resin layer, second minor structure
In each lenticule width direction it is identical as the width direction of the resin layer.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, in any two layers of first minor structures
The thickness of lenticule and/or of different size, the thickness of the lenticule in any two layers of second minor structures and/or of different size.
In the utility model embodiment preferably selects, in above-mentioned imaging arrangement, in any two layers of first minor structures
The primary optical axis of two lenticules of corresponding position is located at different space faces, the two of corresponding position in any two layers of second minor structures
The primary optical axis of a lenticule is located at different space faces.
The utility model embodiment additionally provides a kind of projection screen, including matrix structure and is made in the matrix structure
Imaging arrangement；
Wherein, which includes the resin layer being made of multiple lenticules, each described lenticule has at least
One curved surface, so as to can be spread in corresponding curved surface when beam Propagation to the lenticule.
The utility model embodiment additionally provides a kind of optical projection system, including laser projection and is based on the laser projection
The light beam of machine output carries out the projection screen of imaging display, and the projection screen includes matrix structure and is made in the substrate knot
The imaging arrangement of structure；
Wherein, which includes the resin layer being made of multiple lenticules, each described lenticule has at least
One curved surface, so as to can be spread in corresponding curved surface when beam Propagation to the lenticule.
Imaging arrangement, projection screen and optical projection system provided by the utility model are made of by being arranged multiple lenticules
Resin layer so that the light beam into the resin layer can be spread based on the curved surface of the lenticule of corresponding position, to make
It is flooded to each region of imaging arrangement into the light beam in resin layer, and then is preferably imaged guaranteeing that imaging arrangement has
While effect, additionally it is possible to increase the visual angle of the projection screen of application.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of optical projection system provided by the embodiment of the utility model.
Fig. 2 is another structural schematic diagram of optical projection system provided by the embodiment of the utility model.
Fig. 3 is the structural schematic diagram of projection screen provided by the embodiment of the utility model.
Fig. 4 is the structural schematic diagram of imaging arrangement provided by the embodiment of the utility model.
Fig. 5 is another structural schematic diagram of imaging arrangement provided by the embodiment of the utility model.
Fig. 6 is the schematic diagram that light beam provided by the embodiment of the utility model is spread in the curved surface of lenticule.
Fig. 7 is another structural schematic diagram of imaging arrangement provided by the embodiment of the utility model.
Fig. 8 be input side and outlet side provided by the embodiment of the utility model be all curved surface imaging arrangement structural representation
Figure.
Fig. 9 be input side and outlet side provided by the embodiment of the utility model be all curved surface imaging arrangement another structure
Schematic diagram.
Icon: 10- optical projection system；20- laser projection；30- projection screen；100- imaging arrangement；110- lenticule；
111- primary optical axis；The first minor structure of 130-；The second minor structure of 150-；200- matrix structure.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Usually retouched in attached drawing here
The component of the utility model embodiment stated and shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.In the utility model
In description, term " first ", " second " etc. are only used for distinguishing description, and should not be understood as only or imply relative importance.
In the description of the present invention, unless otherwise clearly defined and limited, term " setting ", " connected ", " company
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this with concrete condition
Concrete meaning in type.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of optical projection system 10, may include laser projection
Machine 20 and projection screen 30.Wherein, the laser projection 20 can be with output beam to the projection screen 30, the projection screen
The light beam that curtain 30 can be exported based on the laser projection 20 carries out imaging and shows.
Optionally, the optical device that the laser projection 20 includes is unrestricted, can according to practical application request into
Row setting for example, may include, but is not limited to red, green and blue three coloured light valves, close beam X prism, projection lens and
Drive the optical devices such as light valve, if can effectively output red, green and blue laser beam.
Optionally, the optical texture that the projection screen 30 includes is unrestricted, can be carried out according to practical application request
Setting, for example, can have different structure settings according to the type difference of the projection screen 30.
Wherein, the type of the projection screen 30 may include front projection screen and rear projection screen.In detail, it is just throwing
In the application of shadow screen, laser projection 20 is located at the same side of projection screen 30 with viewer.In the application of rear projection screen
In, laser projection 20 is located at the opposite sides of projection screen 30 with viewer.That is, front projection screen is compared to rear-projection
Shadow screen at least also has a catoptric arrangement, so that the laser beam that laser projection 20 exports can pass through the catoptric arrangement
It is reflected.
In conjunction with Fig. 3, the utility model embodiment also provides a kind of projection screen 30 that can be applied to above-mentioned optical projection system 10.
Wherein, the projection screen 30 may include imaging arrangement 100 and matrix structure 200.
Further, in the present embodiment, the matrix structure 200 can be transparent configuration.The imaging arrangement 100 is made
Make in the one side of the matrix structure 200, so that the light beam that the laser projection 20 in the optical projection system 10 exports can be worn
It crosses the matrix structure 200 and reaches the imaging arrangement 100, and complete imaging display in the imaging arrangement 100.
Optionally, the concrete type of the matrix structure 200 is unrestricted, can be set according to practical application request
It sets, for example, either flexible structure, is also possible to the structure with certain rigidity.Wherein, flexible structure may include, but
It is not limited to the flexible plastic films such as PE, PVC, CPP, BOPP, PC, PET, PA or TPU.It can wrap with certain rigid structure
It includes, but is not limited to the transparent substrates such as glass, acrylic.
Also, the matrix structure 200 is unrestricted to the light transmittance of visible light, can be carried out according to practical application request
Setting.It in the present embodiment, is the effect for guaranteeing imaging display, the light transmittance of the matrix structure 200 can be greater than or equal to
75%.
Further, in the present embodiment, type based on the projection screen 30 is different, which can be with
Including other optical textures, for example, can also include catoptric arrangement when the projection screen 30 is front projection screen.
Wherein, the catoptric arrangement is located at one side of the imaging arrangement 100 far from the matrix structure 200, so that institute
The light beam for stating the output of laser projection 20 can sequentially pass through the matrix structure 200, imaging arrangement 100 reaches the reflection knot
Structure, and reflection occurs to be again introduced into the imaging arrangement 100 in the catoptric arrangement.
In conjunction with Fig. 4 and Fig. 5, the utility model embodiment also provides a kind of imaging knot that can be applied to above-mentioned projection screen 30
Structure 100.Wherein, the imaging arrangement 100 may include resin layer, also, the resin layer can be by multiple 110 structures of lenticule
At.
Further, in the present embodiment, each described lenticule 110 has at least one curved surface, so as to pass through institute
The light beam of the matrix structure 200 of projection screen 30 is stated after entering the resin layer, it can be based on the lenticule 110 of corresponding position
Curved surface spread, thus make enter resin layer in light beam be flooded to each region of imaging arrangement 100 (such as Fig. 6 institute
Show), and then while guaranteeing that imaging arrangement 100 has preferable imaging effect, additionally it is possible to increase the projection screen 30 of application
Visual angle.
Optionally, the shape of the lenticule 110 is unrestricted, as long as at least one curved surface so that incident light beam
It can spread.In the present embodiment, the lenticule 110 can be column structure.In detail, which can
To include that a plane, a curved surface and two sides are enclosed.
Wherein, the concrete shape of the curved surface is unrestricted, can be configured according to practical application request, as long as can
Incident light beam is spread, for example, may include, but be not limited to paraboloid, arc surface or ellipsoid etc..In detail
Ground, when the curved surface is arc surface, the lenticule 110 can be a cylinder along the portion that axis is longitudinally cut
Separation structure.
Optionally, the generation type of the resin layer is unrestricted, can be selected according to practical application request.At this
In embodiment, liquid resin can be used, and production formation has on the matrix structure 200 by way of die coating
The resin layer of multiple lenticules 110.
Wherein, the specific distribution mode of multiple lenticules 110 is unrestricted, can be carried out according to practical application request
Setting, for example, can be configured according to factors such as manufacturing process.In the present embodiment, multiple lenticules 110 can be in
Array distribution, so that the resin layer may include multilayer minor structure.
In detail, the multilayer minor structure is set gradually on the thickness direction of the resin layer, described in superposition formation
Resin layer.Also, certain manufacturing process factor is considered, in the thickness side of the resin layer in each layer minor structure
There is a lenticule 110, the length direction (L in such as Fig. 4 or 5 in the resin layer on (direction H in such as Fig. 4 or 5)
Direction) or width direction (direction W in such as Fig. 4 or 5) on have multiple lenticules 110 set gradually.
That is, the thickness of each layer minor structure is equal to the thickness of a lenticule 110, each layer knot
The length of structure is equal to the length an of lenticule 110 or the sum of the width equal to this layer of each lenticule 110, each layer knot
The width of structure is equal to the width of this layer of each lenticule 110 and/or equal to a lenticule 110 length.
It further, is diffusion effect of the raising light beam in the resin layer to guarantee that imaging display with higher is imitated
The refractive index of the multilayer minor structure can be configured by fruit respectively in the present embodiment, so that each straton structure is corresponding
Refractive index exists different.
Optionally, the set-up mode of the refractive index of each lenticule 110 is unrestricted in the multilayer minor structure, can basis
Practical application request is configured, for example, either the refractive index of partial microlenses 110 is also possible to whole in the presence of difference
The refractive index of lenticule 110 is all different.In the present embodiment, in the multilayer minor structure in two layers of minor structure of arbitrary neighborhood
The refractive index of lenticule 110 can be different, and the refractive index of each lenticule 110 in same layer minor structure can be identical.
Also, on the basis of guaranteeing that the refractive index of the lenticule 110 in two layers of minor structure of arbitrary neighborhood has different, it is
The efficiency of production imaging arrangement 100 is further improved, it in the present embodiment, can be by the multilayer minor structure point in conjunction with Fig. 6
For the first minor structure of multilayer 130 and the second minor structure of multilayer 150.
In detail, the refractive index of first minor structure 130 and the second minor structure 150 is different, and two layers of arbitrary neighborhood the
It is provided between one minor structure 130 between two layers one layer of second minor structure 150, arbitrary neighborhood of second minor structures 150 and is provided with one
The first minor structure 130 of layer.That is, first minor structure 130 and second minor structure 150 can be with alternate intervals point
Cloth.
Wherein, the relative size relationship of first minor structure 130 and the corresponding refractive index of second minor structure 150 is not
It is restricted, can be configured according to practical application request, for example, either the corresponding refraction of first minor structure 130
Rate is greater than the corresponding refractive index of second minor structure 150, is also possible to the corresponding refractive index of second minor structure 150 and is greater than
The corresponding refractive index of first minor structure 130.For example, in the example that one kind can substitute, first minor structure 130
Refractive index can be 1.60, and the refractive index of second minor structure 150 can be 1.43.
Optionally, in first minor structure 130 and second minor structure 150 setting direction of lenticule 110 not by
Limitation, for example, either the lenticule 110 in first minor structure 130 and the lenticule in second minor structure 150
110 setting direction is identical so that the lenticule 110 in first minor structure 130 with it is micro- in second minor structure 150
Lens 110 are arranged in parallel, are also possible in the lenticule 110 in first minor structure 130 and second minor structure 150
The setting direction of lenticule 110 is vertical, so that the lenticule 110 in first minor structure 130 and second minor structure 150
In lenticule 110 be arranged vertically.
In detail, each lenticule 110 in a kind of example, with further reference to Fig. 4, in first minor structure 130
Width direction it is identical as the width direction of the resin layer, the width side of each lenticule 110 in second minor structure 150
To identical as the width direction of the resin layer.That is, lenticule 110 in first minor structure 130 and described the
Lenticule 110 in two minor structures 150 is arranged in parallel.
In another example, with further reference to Fig. 5, the width of each lenticule 110 in first minor structure 130
Direction is identical as the width direction of the resin layer, the width direction of each lenticule 110 in second minor structure 150 and institute
The width direction for stating resin layer is vertical.That is, the lenticule 110 and second son in first minor structure 130 are tied
Lenticule 110 in structure 150 is arranged vertically.
Optionally, the thickness relationship of corresponding lenticule 110 is unrestricted in each the first minor structure of layer 130, Ke Yigen
It is configured according to practical application request, for example, being also possible to different either identical.It in the present embodiment, is raising
For the imaging arrangement 100 to the diffusivity of light beam, the thickness of the lenticule 110 in any two layers of first minor structures 130 can be with
It is different.
Also, the wide association of corresponding lenticule 110 is unrestricted in each the first minor structure of layer 130, can basis
Practical application request is configured, for example, being also possible to different either identical.In the present embodiment, in conjunction with Fig. 7,
To improve the imaging arrangement 100 to the diffusivity of light beam, the width of the lenticule 110 in any two layers of first minor structures 130
Degree can be different.
Wherein, in the first minor structure 130 described in multilayer, along close to the matrix structure 200 to the separate substrate knot
The thickness and width in the direction of structure 200, the lenticule 110 can be incremented by successively.
Optionally, the thickness relationship of corresponding lenticule 110 is unrestricted in each the second minor structure of layer 150, Ke Yigen
It is configured according to practical application request, for example, being also possible to different either identical.It in the present embodiment, is raising
For the imaging arrangement 100 to the diffusivity of light beam, the thickness of the lenticule 110 in any two layers of second minor structures 150 can be with
It is different.
Also, the wide association of corresponding lenticule 110 is unrestricted in each the second minor structure of layer 150, can basis
Practical application request is configured, for example, being also possible to different either identical.It in the present embodiment, please be further
Referring to Fig. 6, for the lenticule for improving the imaging arrangement 100 to the diffusivity of light beam, in any two layers of second minor structures 150
110 width can be different.
Wherein, in the second minor structure 150 described in multilayer, along close to the matrix structure 200 to the separate substrate knot
The thickness and width in the direction of structure 200, the lenticule 110 can be incremented by successively.
Optionally, in the minor structure described in multilayer, the primary optical axis 111 of each lenticule 110 of each straton structure corresponding position
Distribution mode it is unrestricted, for example, either be located at the same space face in, be also possible to be located at different spaces face in.Its
In, primary optical axis 111 is located at the same space face and refers to, after the lenticule 110 of each straton structure is ranked up according to same direction, respectively
The primary optical axis 111 for belonging to the lenticule 110 of same sequence in straton structure is overlapped.
It wherein, can with further reference to Fig. 6 to the diffusivity of light beam to further improve the imaging arrangement 100
The primary optical axis 111 of each lenticule 110 of each straton structure corresponding position to be set to different space faces.
In detail, it is contemplated that the minor structure may include the first minor structure 130 and the second minor structure 150, also, described
The arrangement mode of lenticule 110 can be identical in first minor structure 130 and the second minor structure 150, be also possible to it is different,
In the present embodiment, the primary optical axis 111 of two lenticules 110 of corresponding position can position in any two layers of first minor structures 130
The primary optical axis 111 of two lenticules 110 of corresponding position is located in different space face, any two layers of second minor structures 150
Different space faces.
Wherein, the arrangement mode phase of the lenticule 110 in first minor structure 130 and second minor structure 150
Meanwhile the primary optical axis 111 of any two layers of first minor structures 130 and the lenticule 110 in the second minor structure 150 can be located at difference
Space face, so as to include that 100 pairs of incident light beams of imaging arrangement of first minor structure 130 and the second minor structure 150 have
Higher diffusivity, so that the light beam entered in resin layer be made to be flooded to each region of imaging arrangement 100.
Further, it is to improve the imaging arrangement 100 to the diffusivity of light beam, in the present embodiment, can also incites somebody to action
Two opposite surfaces of the imaging arrangement 100 are respectively as curved surface, that is to say, that light beam enters and transmit the imaging knot
Two surfaces of structure 100 can be curved surface, specifically, please referring to shown in Fig. 8 and Fig. 9.
In conclusion imaging arrangement 100 provided by the utility model, projection screen 30 and optical projection system 10, pass through setting
The resin layer being made of multiple lenticules 110, so that the light beam into the resin layer can be based on the lenticule 110 of corresponding position
Curved surface spread, so that the light beam entered in resin layer be made to be flooded to each region of imaging arrangement 100, and then protecting
While demonstrate,proving imaging arrangement 100 has preferable imaging effect, additionally it is possible to increase the visual angle of the projection screen 30 of application.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of imaging arrangement, which is characterized in that including the resin layer being made of multiple lenticules, each described lenticule tool
There is at least one curved surface, so as to can spread in corresponding curved surface when beam Propagation to the lenticule；
Wherein, the resin layer includes multilayer minor structure, the multilayer minor structure on the thickness direction of the resin layer successively
Setting, and each straton structure has a lenticule, in the length of the resin layer on the thickness direction of the resin layer
Or there are multiple lenticules set gradually in width direction.
2. imaging arrangement according to claim 1, which is characterized in that two straton of arbitrary neighborhood in the multilayer minor structure
The refractive index of lenticule in structure is different, and the refractive index of each lenticule in same layer minor structure is identical.
3. imaging arrangement according to claim 2, which is characterized in that the multilayer minor structure includes the first minor structure of multilayer
With the second minor structure of multilayer；
Wherein, first minor structure is different with the refractive index of the second minor structure, and between two layers of first minor structures of arbitrary neighborhood
It is provided between two layers one layer of second minor structure, arbitrary neighborhood of second minor structures and is provided with one layer of first minor structure.
4. imaging arrangement according to claim 3, which is characterized in that the lenticule is column structure, first son
The width direction of each lenticule in structure is identical as the width direction of the resin layer, each micro- in second minor structure
The width direction of mirror is vertical with the width direction of the resin layer.
5. imaging arrangement according to claim 3, which is characterized in that the lenticule is column structure, first son
The width direction of each lenticule in structure is identical as the width direction of the resin layer, each micro- in second minor structure
The width direction of mirror is identical as the width direction of the resin layer.
6. imaging arrangement according to claim 4 or 5, which is characterized in that lenticule in any two layers of first minor structures
Thickness and/or of different size, the thickness of lenticule and/or of different size in any two layers of second minor structures.
7. imaging arrangement according to claim 4 or 5, which is characterized in that corresponding position in any two layers of first minor structures
The primary optical axis of two lenticules be located at different space faces, two lenticules of corresponding position in any two layers of second minor structures
Primary optical axis be located at different space faces.
8. a kind of projection screen, which is characterized in that including matrix structure and the imaging arrangement for being made in the matrix structure；
Wherein, which includes the resin layer being made of multiple lenticules, each described lenticule has at least one
Curved surface, so as to can be spread in corresponding curved surface when beam Propagation to the lenticule.
9. a kind of optical projection system, which is characterized in that including laser projection and based on the laser projection output light beam into
The projection screen of row imaging display, the projection screen includes matrix structure and the imaging arrangement for being made in the matrix structure；
Wherein, which includes the resin layer being made of multiple lenticules, each described lenticule has at least one
Curved surface, so as to can be spread in corresponding curved surface when beam Propagation to the lenticule.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821816367.0U CN209525556U (en) | 2018-11-05 | 2018-11-05 | Imaging arrangement, projection screen and optical projection system |
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| CN201821816367.0U CN209525556U (en) | 2018-11-05 | 2018-11-05 | Imaging arrangement, projection screen and optical projection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143765A (en) * | 2018-11-05 | 2019-01-04 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN111929976A (en) * | 2020-10-15 | 2020-11-13 | 成都菲斯特科技有限公司 | Projection screen and projection system |
-
2018
- 2018-11-05 CN CN201821816367.0U patent/CN209525556U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143765A (en) * | 2018-11-05 | 2019-01-04 | 成都菲斯特科技有限公司 | Imaging arrangement, projection screen and optical projection system |
| CN111929976A (en) * | 2020-10-15 | 2020-11-13 | 成都菲斯特科技有限公司 | Projection screen and projection system |
| CN111929976B (en) * | 2020-10-15 | 2021-01-05 | 成都菲斯特科技有限公司 | Projection screen and projection system |
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