CN107966874A - 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
- Publication number
- CN107966874A CN107966874A CN201711470787.8A CN201711470787A CN107966874A CN 107966874 A CN107966874 A CN 107966874A CN 201711470787 A CN201711470787 A CN 201711470787A CN 107966874 A CN107966874 A CN 107966874A
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- layer
- screen
- wide viewing
- viewing angle
- front projection
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/602—Lenticular screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention 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 with each mirror unit of the Fresnel Lenses layer.The present invention 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, less upper downwards angle of visibility then is provided for screen, therefore, the left and right visual angle of screen is bigger than upper downwards angle of visibility；It can overcome traditional pure when adding scattering diluent in screen to provide 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, the defects of being unfavorable for improving screen gain；The present invention 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 present invention relates 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, and such as white plastic curtain, does not have 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 have used Fresnel Lenses to add scattering diluent to realize on the projection screen.
Fresnel Lenses can not only change reasonable layout of projector's chief ray in viewing 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 in space is homogenous diffusion, such screen viewing visual angle and left and right viewing visual angle almost one up and down
Cause, since people are when watching the image of screen, be 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, regarded if purely being provided using scattering diluent
Angle, then looked after left and right visual angle, the luminous energy of upper downwards angle of visibility has just wasted, and is unfavorable for improving screen gain.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, there is provided a kind of wide viewing angle high-gain is just
Projection screen, the projection screen can effectively expand the left and right visual angle of screen by setting cylinder micro unit on Fresnel Lenses,
Upper downwards angle of visibility is compressed at the same time, improves screen gain.
In order to realize foregoing invention purpose, the present invention 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 with the unit of face.
The present invention is superimposed multiple cylinder micro units being vertically arranged on each mirror unit of Fresnel Lenses layer, throws
When shadow light passes through the cylinder micro unit, the reflection of larger angle can occur along the component in screen level direction, so as to
Larger left and right visual angle is provided for screen, a small amount of scattering diluent is added in screen, then provides for screen and is regarded above and below less
Angle, therefore, the left and right visual angle of screen are bigger than upper downwards angle of visibility.Using such technology, can overcome traditional pure in screen
When addition scattering diluent is to provide 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, the defects of being unfavorable for improving screen gain.The present invention had not only expanded left and right visual angle, but also can compress up and down
Visual angle, greatly improves screen gain.And cylinder micro unit is set directly on Fresnel Lenses layer, easy to process, processing essence
Degree is high.
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 formed, 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 formed, and all triangular prisms are connected with each other and are arranged in array-like；Third, the cylinder micro unit is by some
The identical arc column of a size triangular prism identical with several sizes is formed, and all arc columns and the triangular prism are mutual
Connect and mix 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, can effectively prevent screen 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 can improve the contrast of screen；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, during 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 facilitate processing, and can further reduce screen
The thickness of curtain, helps to lift drop shadow effect.
Preferably, the dyed layer peace solidating power layer, which is processed as one, is combined into one layer, during processing, in PC, PMMA or PET
Deng uniform hybrid pigment in resin or monomer solution, then pass through and be molded the mode machine-shapings such as extrusion stretching or heat cure.Both side
Just process, and can further reduce the thickness of screen, help to lift the clarity of drop shadow effect.
Preferably, the smooth solid power layer and scattering layer, which are processed as one, is combined into one layer, during processing, in PC, PMMA or PET
Deng uniformly mixing scattering diluent, then pass through and be molded the mode machine-shapings such as extrusion stretching or heat cure in resin or monomer solution.Both
Convenient processing, and can further reduce the thickness of screen, help to lift the clarity of 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, during processing,
Uniformly mixing scattering diluent and pigment, then by being molded extrusion stretching or heat cure in the resins such as PC, PMMA or PET or monomer solution
Etc. mode machine-shaping.Both facilitate processing, and can further reduce the thickness of screen, help to lift 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 mode machine-shaping such as photocuring or heat cure.Both facilitate processing, and can further reduce the thickness of screen, help to be lifted
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 produced 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 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 whole screen to support protection, and the weight of whole screen can be not only reduced using honeycomb plate structure
Amount, and can meet intensity and environmental requirement.
Preferably, the screen is additionally provided with the frame being connected to around the backboard and above layers, by each layer and backboard
Synthesize an entirety, convenient installation, transport and carrying.
Preferably, hook, convenient installation are additionally provided with the backboard.
Compared with prior art, beneficial effects of the present invention：
The present invention is superimposed multiple cylinder micro units being vertically arranged on each mirror unit of Fresnel Lenses layer, throws
When shadow light passes through the cylinder micro unit, the reflection of larger angle can occur along the component in screen level direction, so as to
Larger left and right visual angle is provided for screen, a small amount of scattering diluent is added in screen, then provides for screen and is regarded above and below less
Angle, therefore, the left and right visual angle of screen are bigger than upper downwards angle of visibility.Using such technology, can overcome traditional pure in screen
When addition scattering diluent is to provide 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, the defects of being unfavorable for improving screen gain.The present invention had not only expanded left and right visual angle, but also can compress up and down
Visual angle, greatly improves screen gain.And cylinder micro unit is set directly on Fresnel Lenses layer, easy to process, processing essence
Degree is high.
Brief description of the drawings：
Fig. 1 is the structure diagram of the Fresnel Lenses layer described in embodiment 1.
Fig. 2-Fig. 4 is structure diagram of the embodiment 1 using the Fresnel Lenses layer of different cylinder micro units.
Fig. 5 is the enlarged diagram of cylinder micro unit of the present invention.
Fig. 6 is the light path schematic diagram (vertical direction) of the wide viewing angle high-gain front projection screen described in embodiment 1.
Fig. 7 is the light path schematic diagram (horizontal direction) of the wide viewing angle high-gain front projection screen described in embodiment 1.
Fig. 8 is the structure diagram of the wide viewing angle high-gain front projection screen described in embodiment 2.
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, 7- reflecting layer, 8- adhesive linkages, 9- backboards, 91- backboard front layers, 92- backboards middle level,
Layer after 93- backboards, 10- frames.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
As Figure 1-Figure 5, 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 with 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
Into 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 form, all triangular prisms are connected with each other and are arranged in array-like；Third, the cylinder micro unit 52 is by some
The identical arc column of a size triangular prism identical with several sizes is formed, and all arc columns and the triangular prism are mutual
Connect and mix and be arranged in array-like.
As shown in fig. 6, 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 that short focus projects.Throw
The light projected in shadow instrument, after being reflected by Fresnel Lenses layer 5 and through reflecting layer 7, light principal direction is concentrated near vertical
Form in the outer surface directional light of screen projects or light principal direction is concentrated and converged in the range of human eye viewing, and ambient light
During by Fresnel Lenses layer 5, multiple reflections can be carried out in lens, its light path is much larger than projection ray, therefore, can disappear significantly
Except ambient light interference, reach environment resistant light, the imaging effect of high contrast.
As shown in fig. 7, the present invention is superimposed on each mirror unit 51 of Fresnel Lenses layer 5 multiple be vertically arranged
Cylinder micro unit 52, when the cylinder micro unit 52 passes through in projection ray, can occur larger along the component in screen level direction
The reflection of angle, so as to provide larger left and right visual angle for screen, adds a small amount of scattering diluent in screen, is then screen
Less upper downwards angle of visibility is provided, therefore, the left and right visual angle of screen is bigger than upper downwards angle of visibility.Using such technology, biography can be overcome
When system pure adds scattering diluent to provide identical left and right and upper downwards angle of visibility in screen, pure scattering diluent has looked after left and right
Visual angle, but wastes the luminous energy of downwards angle of visibility, the defects of being unfavorable for improving screen gain.The present invention had both expanded left and right visual angle,
Downwards angle of visibility can be compressed again at the same time, greatly improves screen gain.And cylinder micro unit 52 is set directly at Fresnel Lenses layer 5
On, easy to process, high precision machining.
Embodiment 2
As shown in figure 8, the present embodiment and embodiment 1 include being connected with each other difference lies in, the screen protective layer 1,
Dyed layer 2, smooth solid power layer 3, scattering layer 4, Fresnel Lenses layer 5 and reflecting layer 7, further include behind 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 can meet intensity and environmental requirement.The screen, which is additionally provided with, is connected to the backboard 9 and above layers
The frame 10 of surrounding, an entirety, convenient installation, transport and carrying are synthesized by each layer and backboard 9.It is additionally provided with the backboard 9
Hook 6, convenient installation.
Above example only not limits technical solution described in the invention to illustrate the present invention, although this explanation
Book is with reference to above-mentioned each embodiment to present invention has been detailed description, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any modify to the present invention or equivalent substitution；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, it should all cover among scope of the presently claimed invention.
Claims (10)
1. a kind of wide viewing angle high-gain front projection screen, it is characterised in that saturating including Fresnel Lenses layer (5), the Fresnel
Multiple cylinder micro units (52) being vertically arranged are superimposed with each mirror unit (51) of mirror layer (5).
A kind of 2. wide viewing angle high-gain front projection screen according to claim 1, it is characterised in that the cylinder micro unit
(52) it is arc rod structure or triangular prism structure.
A kind of 3. wide viewing angle high-gain front projection screen according to claim 1, it is characterised 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, it is characterised in that the screen further includes
Protective layer (1), dyed layer (2), smooth solid power layer (3), scattering layer (4) and reflecting layer (7).
A kind of 5. wide viewing angle high-gain front projection screen according to claim 4, it is characterised in that the protective layer (1)
It is processed as one with dyed layer (2) and is combined into one layer.
A kind of 6. wide viewing angle high-gain front projection screen according to claim 4, it is characterised in that the dyed layer (2)
Peaceful solidating power layer (3), which is processed as one, is combined into one layer.
A kind of 7. wide viewing angle high-gain front projection screen according to claim 4, it is characterised in that the smooth solid power layer
(3) it is processed as one with scattering layer (4) and is combined into one layer.
A kind of 8. wide viewing angle high-gain front projection screen according to claim 4, it is characterised 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.
A kind of 9. wide viewing angle high-gain front projection screen according to claim 4, it is characterised 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, it is characterised in that the screen
Curtain further includes the backboard (9) after the reflecting layer (7), and the backboard (9) passes through adhesive linkage (8) and the reflecting layer (7)
Bond 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 |
|---|---|---|---|
| CN201711470787.8A CN107966874A (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 |
|---|---|---|---|
| CN201711470787.8A CN107966874A (en) | 2017-12-28 | 2017-12-28 | A kind of wide viewing angle high-gain front projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107966874A true CN107966874A (en) | 2018-04-27 |
Family
ID=61993825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711470787.8A Pending CN107966874A (en) | 2017-12-28 | 2017-12-28 | A kind of wide viewing angle high-gain front projection screen |
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| Country | Link |
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| CN (1) | CN107966874A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624843A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
| CN115202144A (en) * | 2022-09-14 | 2022-10-18 | 深圳市真屏科技发展有限公司 | Projection screen and manufacturing method thereof |
| WO2023199926A1 (en) * | 2022-04-15 | 2023-10-19 | デクセリアルズ株式会社 | Screen, method for manufacturing same, and die |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3663499B2 (en) * | 1996-07-12 | 2005-06-22 | 大日本印刷株式会社 | Reflective screen |
| CN105759555A (en) * | 2016-04-29 | 2016-07-13 | 青岛海信电器股份有限公司 | Display screen and laser television |
| CN107102508A (en) * | 2017-07-10 | 2017-08-29 | 成都恒坤光显材料科技有限公司 | A kind of ultra-wide angle short focus front projection screen |
| CN207636922U (en) * | 2017-12-28 | 2018-07-20 | 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 |
-
2017
- 2017-12-28 CN CN201711470787.8A patent/CN107966874A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3663499B2 (en) * | 1996-07-12 | 2005-06-22 | 大日本印刷株式会社 | Reflective screen |
| CN105759555A (en) * | 2016-04-29 | 2016-07-13 | 青岛海信电器股份有限公司 | Display screen and laser television |
| CN107102508A (en) * | 2017-07-10 | 2017-08-29 | 成都恒坤光显材料科技有限公司 | A kind of ultra-wide angle short focus front projection screen |
| CN207636922U (en) * | 2017-12-28 | 2018-07-20 | 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624843A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
| CN111624843B (en) * | 2020-07-28 | 2021-02-12 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
| WO2023199926A1 (en) * | 2022-04-15 | 2023-10-19 | デクセリアルズ株式会社 | Screen, method for manufacturing same, and die |
| CN115202144A (en) * | 2022-09-14 | 2022-10-18 | 深圳市真屏科技发展有限公司 | Projection screen and manufacturing method thereof |
| CN115202144B (en) * | 2022-09-14 | 2022-12-13 | 深圳市真屏科技发展有限公司 | Projection screen and manufacturing method thereof |
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