CN207636922U - A kind of wide viewing angle high-gain front projection screen - Google Patents
A kind of wide viewing angle high-gain front projection screen Download PDFInfo
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- CN207636922U CN207636922U CN201721891438.9U CN201721891438U CN207636922U CN 207636922 U CN207636922 U CN 207636922U CN 201721891438 U CN201721891438 U CN 201721891438U CN 207636922 U CN207636922 U CN 207636922U
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Abstract
The utility model discloses a kind of wide viewing angle high-gain front projection screen, including Fresnel Lenses layer, multiple cylinder micro units being vertically arranged are superimposed on each mirror unit of the Fresnel Lenses layer.The utility model is superimposed multiple cylinder micro units being vertically arranged on each mirror unit of Fresnel Lenses layer, when the cylinder micro unit passes through in projection ray, the reflection of larger angle can occur along the component in screen level direction, so as to provide larger left and right visual angle for screen, a small amount of scattering diluent is added in screen, smaller upper downwards angle of visibility is then provided for screen, therefore, the left and right visual angle of screen is bigger than upper downwards angle of visibility；Traditional pure scattering diluent that added in screen can be overcome come when providing identical left and right with upper downwards angle of visibility, pure scattering diluent has looked after left and right visual angle, but wastes the luminous energy of downwards angle of visibility, be unfavorable for improving the defect of screen gain；The present apparatus had not only expanded left and right visual angle, but also can compress downwards angle of visibility, greatly improved screen gain.
Description
Technical field
The utility model is related to a kind of projection screen, more particularly to a kind of wide viewing angle high-gain front projection screen.
Background technology
Existing ultrashort burnt front projection screen is imaged by way of scattering mostly, such as white plastic curtain, is not had to ambient light
Selectivity, causes influence of the ambient light to drop shadow effect very big, and when ambient light is brighter, the contrast of Projection Display is lower,
Display effect is poorer.In order to overcome disadvantages described above, people that Fresnel Lenses has been used to add scattering diluent to realize on the projection screen.
Fresnel Lenses can not only change projector's chief ray in the reasonable layout for watching space, moreover it is possible to the influence of ambient light is eliminated,
The contrast of screen is improved, scattering diluent then provides viewing visual angle.
Since scattering diluent is homogenous diffusion in space, such screen viewing visual angle and left and right viewing visual angle almost one up and down
It causes, since people are when watching the image of screen, is mainly distributed across the left and right directions of screen, that is, in practical applications,
It is required that the viewing visual angle of the left and right of screen is big, and it is of less demanding to upper and lower viewing visual angle, if purely being regarded using scattering diluent offer
Angle, then having looked after left and right visual angle, the luminous energy of upper downwards angle of visibility is just wasted, and is unfavorable for improving screen gain.
Invention content
The purpose of the utility model is to overcome the above-mentioned deficiencies in the presence of the prior art, provide a kind of wide viewing angle height increasing
Beneficial front projection screen, the projection screen can effectively expand the left and right of screen by the way that cylinder micro unit is arranged on Fresnel Lenses
Visual angle, while upper downwards angle of visibility is compressed, improve screen gain.
In order to achieve the above-mentioned object of the invention, the utility model provides following technical scheme：
A kind of wide viewing angle high-gain front projection screen, including Fresnel Lenses layer, each mirror of the Fresnel Lenses layer
Multiple cylinder micro units being vertically arranged are superimposed on the unit of face.
The utility model is superimposed multiple micro- lists of the cylinder being vertically arranged on each mirror unit of Fresnel Lenses layer
When the cylinder micro unit passes through in projection ray, the reflection of larger angle can occur along the component in screen level direction for member, from
And larger left and right visual angle can be provided for screen, a small amount of scattering diluent is added in screen, then is provided for screen smaller upper
Downwards angle of visibility, therefore, the left and right visual angle of screen are bigger than upper downwards angle of visibility.Using such technology, traditional pure shielding can be overcome
Addition scattering diluent is come when providing identical left and right with upper downwards angle of visibility, pure scattering diluent has looked after left and right visual angle, but wastes in curtain
The luminous energy of upper downwards angle of visibility is unfavorable for improving the defect of screen gain.The utility model had not only expanded left and right visual angle, but also can
Downwards angle of visibility in compression, greatly improves screen gain.And cylinder micro unit is set up directly on Fresnel Lenses layer, processing side
Just, high precision machining.
Preferably, the cylinder micro unit is arc rod structure or triangular prism structure, which is that cross-sectional edge is
The column structure of arc.Including at least following three kinds of situations, first, the cylinder micro unit is by the identical arc of several sizes
Column is constituted, and all arc columns are connected with each other and are arranged in array-like；Second, the cylinder micro unit is by several size phases
Same triangular prism is constituted, and all triangular prisms are connected with each other and are arranged in array-like；Third, the cylinder micro unit is by several
The identical arc column of a size triangular prism identical with several sizes is constituted, and all arc columns and the triangular prism are mutual
It connects and mixes and be arranged in array-like.
Preferably, the cylinder micro unit is relative to the Fresnel Lenses layer concave or convex.
Preferably, the screen further includes protective layer, dyed layer, smooth solid power layer, scattering layer and reflecting layer.The protection
Layer is polymer composite layer, and light transmittance is high, and screen can be effectively prevent to be scratched or be contaminated；The dyed layer is by transmitance
High transmittance resin more than 85% uniformly adds pigment and is made, and the contrast of screen can be improved；The smooth solid power layer uses
High transmittance resin material, such as PET, PC, PMMA can effectively improve the impact strength of screen and the tolerance energy to environment
Power, and the basis of covering can be smeared as other layers；The scattering layer can be process by adding scattering diluent in colloid,
To provide screen viewing visual angle；The reflecting layer is made of metal materials such as silver, aluminium, is had high visible reflectivity, is used for
The incident light of episcopic projector.
Preferably, the protective layer and dyed layer, which are processed as one, is combined into one layer, when processing in the colloid of protective layer
The pigment of the even mixing dyed layer, it is i.e. plastic after to be dried or photocuring.Both processing had been facilitated, and screen can be further decreased
The thickness of curtain helps to promote drop shadow effect.
Preferably, the dyed layer peace solidating power layer, which is processed as one, is combined into one layer, when processing, in PC, PMMA or PET
Uniform hybrid pigment in equal resins or monomer solution, then squeeze out the modes machine-shapings such as stretching or heat cure by being molded.Both side
Just it processes, and the thickness of screen can be further decreased, contribute to the clarity for promoting drop shadow effect.
Preferably, the smooth solid power layer and scattering layer, which are processed as one, is combined into one layer, when processing, in PC, PMMA or PET
Scattering diluent is uniformly mixed in equal resins or monomer solution, then squeezes out the modes machine-shapings such as stretching or heat cure by being molded.Both
Facilitate processing, and the thickness of screen can be further decreased, contributes to the clarity for promoting drop shadow effect.
Preferably, the dyed layer, smooth solid power layer and scattering layer three, which are processed as one, is combined into one layer, when processing,
Scattering diluent and pigment are uniformly mixed in the resins such as PC, PMMA or PET or monomer solution, then squeeze out stretching or heat cure by being molded
Etc. modes machine-shaping.Both processing had been facilitated, and the thickness of screen can be further decreased, and helped to promote the clear of drop shadow effect
Degree.
Preferably, the dyed layer and scattering layer, which are processed as one, is combined into one layer, in colloid of the transmitance more than 85%
Scattering diluent and coloring pigment are mixed, the colloid mixed is uniformly coated in PC, PMMA or PET sheet surface, then pass through
The modes machine-shaping such as photocuring or heat cure.Both processing had been facilitated, and the thickness of screen can be further decreased, and helped to be promoted
The clarity of drop shadow effect.
Preferably, the surface of the protective layer is processed as cloudy surface or hair side, prevents external environmental light from being generated in screen surface
Orienting reflex.
Preferably, the case hardness of the protective layer is more than 2H, prevents from scratching.
Preferably, the screen further includes the backboard being located at behind the reflecting layer, and the backboard passes through adhesive linkage and described
Reflecting layer bonds together, and the backboard includes layer after backboard front layer, backboard middle level and backboard, and the backboard middle level is cellular board
Structure.Backboard plays the role of entire screen to support protection, and the weight of entire screen can be not only reduced using honeycomb plate structure
Amount, and intensity and environmental requirement can be met.
Preferably, the screen is additionally provided with the frame being connected to around the backboard and above layers, by each layer and backboard
An entirety is synthesized, installation, transport and carrying are facilitated.
Preferably, it is additionally provided with hook on the backboard, facilitates installation.
Compared with prior art, the beneficial effects of the utility model：
The utility model is superimposed multiple micro- lists of the cylinder being vertically arranged on each mirror unit of Fresnel Lenses layer
When the cylinder micro unit passes through in projection ray, the reflection of larger angle can occur along the component in screen level direction for member, from
And larger left and right visual angle can be provided for screen, a small amount of scattering diluent is added in screen, then is provided for screen smaller upper
Downwards angle of visibility, therefore, the left and right visual angle of screen are bigger than upper downwards angle of visibility.Using such technology, traditional pure shielding can be overcome
Addition scattering diluent is come when providing identical left and right with upper downwards angle of visibility, pure scattering diluent has looked after left and right visual angle, but wastes in curtain
The luminous energy of upper downwards angle of visibility is unfavorable for improving the defect of screen gain.The utility model had not only expanded left and right visual angle, but also can
Downwards angle of visibility in compression, greatly improves screen gain.And cylinder micro unit is set up directly on Fresnel Lenses layer, processing side
Just, high precision machining.
Description of the drawings：
Fig. 1 is the structural schematic diagram of Fresnel Lenses layer described in embodiment 1.
Fig. 2-Fig. 5 is structural schematic diagram of the embodiment 1 using the Fresnel Lenses layer of different cylinder micro units.
Fig. 6 is the enlarged diagram of cylinder micro unit described in the utility model.
Fig. 7 is the light path schematic diagram (vertical direction) of wide viewing angle high-gain front projection screen described in embodiment 1.
Fig. 8 is the light path schematic diagram (horizontal direction) of wide viewing angle high-gain front projection screen described in embodiment 1.
Fig. 9 is the structural schematic diagram of the wide viewing angle high-gain front projection screen described in embodiment 2.
It is marked in figure：1- protective layers, 2- dyed layers, the smooth solid power layers of 3-, 4- scattering layers, 5- Fresnel Lenses layers, 51- mirrors
Face unit, 52- cylinder micro units, 6- hooks, the reflecting layer 7-, 8- adhesive linkages, 9- backboards, 91- backboard front layers, 92- backboards middle level,
Layer after 93- backboards, 10- frames.
Specific implementation mode
The utility model is described in further detail with reference to test example and specific implementation mode.But it should not be by this
The range for being interpreted as the above-mentioned theme of the utility model is only limitted to embodiment below, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
Embodiment 1
As shown in figs 1 to 6, a kind of wide viewing angle high-gain front projection screen, including Fresnel Lenses layer 5, the Fresnel
Multiple cylinder micro units 52 being vertically arranged are superimposed on each mirror unit 51 of lens jacket 5, each micro- list of cylinder
Member 52 is arc rod structure or triangular prism structure, and the cylinder micro unit 52 relative to 5 indent of Fresnel Lenses layer or
Evagination.
Including at least following three kinds of situations, first, the cylinder micro unit 52 is by the identical arc column structure of several sizes
At all arc columns are connected with each other and are arranged in array-like；Second, the cylinder micro unit 52 is identical by several sizes
Triangular prism constitute, all triangular prisms are connected with each other and are arranged in array-like；Third, the cylinder micro unit 52 is by several
The identical arc column of a size triangular prism identical with several sizes is constituted, and all arc columns and the triangular prism are mutual
It connects and mixes and be arranged in array-like.
As shown in fig. 7, the brightness of screen can be substantially improved in the Fresnel Lenses layer 5, in use, projecting apparatus is placed in
In front of screen, when projecting apparatus and smaller screen distance, good drop shadow effect can be still obtained, realizes short focus projection.It throws
The light projected in shadow instrument, by Fresnel Lenses layer 5 and after reflecting layer 7 is reflected, light principal direction is concentrated near vertical
Form in the outer surface directional light of screen projects or light principal direction concentration converges in the range of human eye viewing, and ambient light
When by Fresnel Lenses layer 5, multiple reflections can be carried out in lens, therefore light path can disappear significantly much larger than projection ray
Except ambient light interference, reach environment resistant light, high contrast imaging effect.
As shown in figure 8, the utility model is superimposed multiple vertical rows on each mirror unit 51 of Fresnel Lenses layer 5
The cylinder micro unit 52 of row when the cylinder micro unit 52 passes through in projection ray, can occur along the component in screen level direction
The reflection of larger angle adds a small amount of scattering diluent so as to provide larger left and right visual angle for screen in screen, then for
Screen provides smaller upper downwards angle of visibility, and therefore, the left and right visual angle of screen is bigger than upper downwards angle of visibility.Using such technology, can with gram
Traditional pure scattering diluent that added in screen is taken come when providing identical left and right with upper downwards angle of visibility, pure scattering diluent is looked after
Left and right visual angle but wastes the luminous energy of downwards angle of visibility, is unfavorable for improving the defect of screen gain.The utility model both expands a left side
LOOK RIGHT, while downwards angle of visibility can be compressed again, greatly improve screen gain.And cylinder micro unit 52 is set up directly on Fresnel
It is easy to process on lens jacket 5, high precision machining.
Embodiment 2
As shown in figure 9, the present embodiment and embodiment 1 difference lies in, the screen include the protective layer 1 being connected with each other,
Dyed layer 2, smooth solid power layer 3, scattering layer 4, Fresnel Lenses layer 5 and reflecting layer 7, further include after being located at the reflecting layer 7
Backboard 9, the backboard 9 are bonded together by adhesive linkage 8 and the reflecting layer 7.The backboard 9 includes backboard front layer 91, the back of the body
Layer 93 behind plate middle level 92 and backboard, the backboard middle level 92 are honeycomb plate structure.It can not only be reduced using honeycomb plate structure whole
The weight of a screen, and intensity and environmental requirement can be met.The screen, which is additionally provided with, is connected to the backboard 9 and above layers
Each layer and backboard 9 are synthesized an entirety, facilitate installation, transport and carrying by the frame 10 of surrounding.It is additionally provided on the backboard 9
Hook 6, facilitates installation.
Above example is only to illustrate the utility model and not limits technical solution described in the utility model, to the greatest extent
Pipe this specification has been carried out detailed description with reference to above-mentioned each embodiment to the utility model, but the utility model not office
It is limited to above-mentioned specific implementation mode, therefore any modifies to the utility model or equivalent replacement；And all do not depart from practicality
The technical solution of novel spirit and scope and its improvement should all be covered in the right of the utility model.
Claims (10)
1. a kind of wide viewing angle high-gain front projection screen, which is characterized in that including Fresnel Lenses layer (5), the Fresnel is saturating
Multiple cylinder micro units (52) being vertically arranged are superimposed on each mirror unit (51) of mirror layer (5).
2. a kind of wide viewing angle high-gain front projection screen according to claim 1, which is characterized in that the cylinder micro unit
(52) it is arc rod structure or triangular prism structure.
3. a kind of wide viewing angle high-gain front projection screen according to claim 1, which is characterized in that the cylinder micro unit
(52) relative to Fresnel Lenses layer (5) concave or convex.
4. a kind of wide viewing angle high-gain front projection screen according to claim 1, which is characterized in that the screen further includes
Protective layer (1), dyed layer (2), smooth solid power layer (3), scattering layer (4) and reflecting layer (7).
5. a kind of wide viewing angle high-gain front projection screen according to claim 4, which is characterized in that the protective layer (1)
It is processed as one with dyed layer (2) and is combined into one layer.
6. a kind of wide viewing angle high-gain front projection screen according to claim 4, which is characterized in that the dyed layer (2)
Peaceful solidating power layer (3), which is processed as one, is combined into one layer.
7. a kind of wide viewing angle high-gain front projection screen according to claim 4, which is characterized in that the smooth solid power layer
(3) it is processed as one with scattering layer (4) and is combined into one layer.
8. a kind of wide viewing angle high-gain front projection screen according to claim 4, which is characterized in that the dyed layer (2),
Smooth solid power layer (3) and scattering layer (4) three are processed as one and are combined into one layer.
9. a kind of wide viewing angle high-gain front projection screen according to claim 4, which is characterized in that the dyed layer (2)
It is processed as one with scattering layer (4) and is combined into one layer.
10. according to a kind of any wide viewing angle high-gain front projection screens of claim 4-9, which is characterized in that the screen
Curtain further includes the backboard (9) being located at after the reflecting layer (7), and the backboard (9) passes through adhesive linkage (8) and the reflecting layer (7)
It bonds together, the backboard (9) includes layer (93) after backboard front layer (91), backboard middle level (92) and backboard, in the backboard
Layer (92) is honeycomb plate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721891438.9U CN207636922U (en) | 2017-12-28 | 2017-12-28 | A kind of wide viewing angle high-gain front projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721891438.9U CN207636922U (en) | 2017-12-28 | 2017-12-28 | A kind of wide viewing angle high-gain front projection screen |
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| Publication Number | Publication Date |
|---|---|
| CN207636922U true CN207636922U (en) | 2018-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721891438.9U Active CN207636922U (en) | 2017-12-28 | 2017-12-28 | A kind of wide viewing angle high-gain front projection screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966874A (en) * | 2017-12-28 | 2018-04-27 | 成都恒坤光显材料科技有限公司 | A kind of wide viewing angle high-gain front projection screen |
| CN111624844A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
-
2017
- 2017-12-28 CN CN201721891438.9U patent/CN207636922U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966874A (en) * | 2017-12-28 | 2018-04-27 | 成都恒坤光显材料科技有限公司 | A kind of wide viewing angle high-gain front projection screen |
| CN111624844A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
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