CN109426062A - A kind of short focus orthographic projection shows screen and preparation method thereof - Google Patents
A kind of short focus orthographic projection shows screen and preparation method thereof Download PDFInfo
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- CN109426062A CN109426062A CN201710781081.7A CN201710781081A CN109426062A CN 109426062 A CN109426062 A CN 109426062A CN 201710781081 A CN201710781081 A CN 201710781081A CN 109426062 A CN109426062 A CN 109426062A
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- short focus
- orthographic projection
- projector
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/113—Anti-reflection coatings using inorganic layer materials only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
A kind of short focus orthographic projection display screen, it is characterized in that, to be outer close to projector side, by outside to inside successively comprising hardening counnter attack layer, Fresnel Lenses layer, reflecting layer, the smooth surface of Fresnel Lenses layer is towards projector side, each layer index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e. along far from projector direction, layers of material refractive index is sequentially increased, a kind of production method that short focus orthographic projection shows screen is also disclosed in the present invention simultaneously, reach environment light on projection brightness and contrast without influence in the case where, greatly reduce the thickness of projection display screen, increase aesthetics, the cost of raw material is greatly saved simultaneously, Projection Display is set to can satisfy the needs of average family living-room TV viewing.
Description
Technical field
The present invention relates to field of projection display, in particular to a kind of short focus orthographic projection shows screen and preparation method thereof,
The screen cooperates short focus projector to use, and collectively constitutes projection display system with projector.
Background technique
Existing front projection screen mostly uses greatly the mode of scattering, passes through different materials (white modeling, bead or metal coating
Deng) generate scattering luminous energy is redistributed, it is converted into an area source and is imaged.For the side for overcoming scattering to be imaged
Formula is to environment light without selectivity, and when environment light is brighter, the contrast of Projection Display is lower, the poorer defect of display effect,
The prior art generally uses multiple functions layer, be close to projector side it is outer, by outside to inside successively comprising harden counnter attack layer,
Color diffusion layer, Fresnel Lenses layer and reflecting layer, such multiple function layers combination, thickness is thicker, influences beauty, cost of material
It is very expensive.Projection Display is caused to be unable to satisfy the needs of average family living-room TV viewing.
Summary of the invention
The technical problem to be solved by the present invention is to propose that a kind of short focus orthographic projection shows screen, solve the prior art
Laser orthographic projection shows that screen is thicker, unsightly and the high problem of cost.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of short focus orthographic projection display screen, which is characterized in that outside being close to projector side, by outside to inside successively wrapping
Counnter attack layer, Fresnel Lenses layer, reflecting layer containing hardening, the smooth surface of Fresnel Lenses layer is towards projector side.
As further optimization, each layer index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e.,
Along far from projector direction, layers of material refractive index is sequentially increased.
As further optimization, the integral thickness of the display screen is in 0.10mm-2.0mm.
As further optimization, the Fresnel Lenses layer includes through the high transmittance resin material that rate is greater than 85%,
The high resin material thoroughly uniformly adds pigment, diffusion particle and additive, and the Fresnel Lenses layer is to be intercepted by off-axis
Mode intercepts a part from Fresnel Lenses, and thickness 0.01mm-0.2mm, ring is away from 0.02mm-0.3mm.
As further optimization, the pigment is organic pigment or inorganic pigment, and pigment additive amount exists
0.01%wt-10%wt makes the short focus front projection screen that grey black be presented；The diffusion particle is organic diffusion particle
Or inorganic diffusion particle, the additive amount of diffusion particle is in 0.01%wt-10%wt.
As further optimization, the pigment is organic pigment or inorganic pigment, and pigment additive amount is in 0.02%wt-6%
Wt, the additive amount of the diffusion particle is between 0.02%wt-6%wt.
As further optimization, the annulus working face of the Fresnel Lenses layer and the angle edge of Fresnel Lenses smooth surface
Direction far from projector shows screen by projector's parameter and the short focus orthographic projection in the trend that is gradually increased, specific angle
The refractive index of layers of material determines, so that the incident light of projector's different angle after reflecting layer is reflected, is concentrated perpendicular to screen
The direction of curtain is parallel or less parallel projects.
As further optimization, the annulus working face of the Fresnel Lenses layer can be cambered surface, keep projector incident
Light is incident on the every bit in cambered surface by reflected in parallel；Or plane is used, make projector's incident ray by less parallel
Reflection.
As further optimization, high transmittance resin material of the hardening counnter attack layer by transmitance greater than 85% is made,
The resin material is PET, PMMA, PC, and the hardening counnter attack layer is with a thickness of 0.05mm-1.8mm, to it close to projector
Carry out on one side hardening and anti-inverse processing or material itself there is high rigidity and anti-reflection function so that close to the one side of projector
Hardness is greater than or equal to H, and can prevent external environmental light from generating mirror-reflection in screen surface.
As further optimization, the reflecting layer is made of metal material, and thickness is between 0.01 μm of -0.2mm.
As further optimization, the metal material is aluminium, silver, chromium.
A kind of short focus orthographic projection display screen screen making method, it is characterised in that the following steps are included:
Step 1: Mold Making
Phenanthrine mould is processed with precision machine tool.Phenanthrine mould can be flat plate mold, can also use taper die, bore
Fresnel structure is processed on roller.
Step 2: composite material
Pigment and diffusion particle production composite material are uniformly added using high transmission optics photosensitive resin or heat reactive resin；
Step 3: coating wet film
It is coated with composite material in the hardening counnter attack layer surface made, or is coated on being higher than 85% transmitance resin film
Composite material, and the production of Fresnel Lenses layer is completed, then laminating with hardening counnter attack layer, wet film can be according to optics photosensitive resin
Solidification and demolding performace do semi-solid preparation processing.
Step 4: molding
Use taper die using cone roller small end as the center of circle, the length of cone roller is radius, on the coating wet film in the step 3
Rolling；Or it is directly molded on the coating wet film in the step 3 using flat plate mold.
Step 5: curing molding: the coating wet film after molding being irradiated with ultraviolet light or heating carries out curing molding.
Step 6: the reflecting layer is fabricated into curing molding in step 5 by printing, spraying, coating or evaporation process
It is coated on wet film, the reflecting layer is made of metal material, and thickness has high visible reflection between 0.01 μm of -0.2mm
Rate is used for reflective projector incident light.
As further optimization, each functional layer index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e. edge
Far from projector direction, layers of material refractive index is sequentially increased.
As further optimization, metal described in step 6 is aluminium, silver, chromium.
As further optimization, Step 2: pigment described in step 3 kind is organic pigment or inorganic pigment, pigment addition
Amount makes the short focus front projection screen that grey black be presented in 0.02%wt-6% wt；The diffusion particle is organic diffusion particle
Or inorganic diffusion particle, for the additive amount of diffusion particle in 0.02%wt-6% wt, the resin transmitance is greater than 85%.
As further optimization, hardening counnter attack layer described in step 3 kind is greater than 85% high transmittance resin by transmitance
Material is made, and the resin material is PET, PMMA, PC, and the hardening counnter attack layer is with a thickness of 0.05mm-1.8mm, to it
Carry out on one side hardening and anti-inverse processing or material itself close to projector have high rigidity and anti-reflection function, so that close to throwing
One surface hardness of shadow machine is greater than or equal to H, and can prevent external environmental light from generating mirror-reflection in screen surface.
The beneficial effects of the present invention are:
1, projector's incident light can be concentrated and is reflected into go out with the parallel or less parallel light emission of normal to screen, and to its other party
To ambient incident light have absorption, thus reached the high brightness of Projection Display, high contrast is shown, and cooperate short focus
Projection display system is formed away from projector, projector and viewer are in the same side of screen, and projector is apart from screen less than 1
Rice, projector can be placed in average family cabinet for TV, and installation is simple, saved space, be can satisfy Projection Display commonly
The needs of family's living-room TV viewing；
2, reach environment light on projection brightness and contrast without influence in the case where, greatly reduce the thickness of projection display screen
Degree, increases aesthetics, while the cost of raw material is greatly saved, and Projection Display is made to can satisfy the sight of average family living-room TV
The needs seen.
Detailed description of the invention
Fig. 1 is the illustrative view of functional configuration that short focus orthographic projection shows screen in the embodiment of the present invention；
Fig. 2 is interception position schematic diagram of the Fresnel Lenses layer of the present invention on Fresnel Lenses；
Fig. 3 is the stereoscopic schematic diagram of Fresnel Lenses layer of the present invention.
Fig. 4 is the light path schematic diagram that short focus orthographic projection of the present invention shows screen.
Fig. 5 is Fresnel Lenses taper roller schematic diagram of the present invention.
Specific embodiment
The present invention is directed to propose a kind of short focus orthographic projection shows screen, solve in the prior art to overcome environment light pair
Show the influence of screen brightness and contrast, display screen thickness is thicker, influences beauty, and cost of material is also very expensive, throws
Shadow, which is shown, is unable to satisfy the problems such as needs of average family living-room TV viewing.
With reference to the accompanying drawings and embodiments to the detailed description of the solution of the present invention:
As shown in Figure 1, short focus orthographic projection in the present embodiment show screen with close to projector side be outside,
By outside to inside successively comprising hardening counnter attack layer, Fresnel Lenses layer and reflecting layer.The smooth surface of Fresnel Lenses is towards projection
Machine side, 3 one functional layers are combined into an entirety, and the integral thickness of screen is in 0.10mm between 2.0mm.
Fresnel Lenses layer includes through the high transmittance resin material that rate is greater than 85%, and the high resin thoroughly is uniform
Pigment, diffusion particle are added, Fresnel Lenses layer is a part by the interception of off-axis interception way from Fresnel Lenses,
The center of Fresnel Lenses is not included, as shown in Figure 2.Fresnel Lenses thickness degree is in 0.01mm-0.2mm, and ring is away from 0.02mm-
0.3mm, as shown in Figure 3.
Pigment is organic pigment or inorganic pigment, and pigment additive amount is between 0.01%wt-10%wt, effect preferably face
Expect that additive amount between 0.02%wt-6%wt, makes the short focus front projection screen that grey black be presented；The diffusion particle is to have
Machine diffusion particle or inorganic diffusion particle have short focus front projection screen by the diffusion particle of addition good bright
Uniformity and viewing visual angle are spent, the additive amount of diffusion particle is between 0.01%wt-10%wt, between preferably 0.02%wt-6%wt.
The annulus working face of Fresnel Lenses layer and the angle of Fresnel Lenses smooth surface along the direction far from projector be in by
Cumulative main trend, specific angle show that the refractive index of screen layers of material is determined by projector's parameter and the short focus orthographic projection
It is fixed, so that the incident light of projector's different angle, after reflecting layer is reflected, concentration is parallel or approximate with the direction of normal to screen
It is parallel to project the brightness for greatly improving Projection Display.
The annulus working face of Fresnel Lenses layer can be cambered surface, be incident on projector's incident ray each in cambered surface
Point is by reflected in parallel；Or plane is used, reflect projector's incident ray by less parallel.
High transmittance resin material of the hardening counnter attack layer by transmitance greater than 85% is made, and the resin material is PET,
PMMA, PC, the hardening counnter attack layer is with a thickness of 0.05mm-1.8mm, to its carried out at hardening and counnter attack on one side close to projector
Reason or material itself have high rigidity and anti-reflection function, so that the surface hardness close to projector is greater than or equal to H, and can prevent
Only external environmental light generates mirror-reflection in screen surface.
Reflecting layer is made of metal material, especially aluminium, silver, chromium.Thickness is between 0.01 μm of -0.2mm.
Each functional layer index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e., along separate projector direction, respectively
Layer material refractive index is sequentially increased, and is reached to the incident light in other directions of non-projector's incident direction after reflecting layer is reflected
Fresnel Lenses layer and hardening counnter attack layer, hardening counnter attack layer and when Air Interface have the probability for generating and being totally reflected, and show as pair
The incident light in non-other directions of projector's incidence light direction has different degrees of absorption, greatly improves the bright room comparison of display
Degree, index path are as shown in Figure 4, it can be seen that the short focus front projection screen in the present invention can concentrate projector's incident light anti-
It penetrates into and is gone out with the parallel or less parallel light emission of normal to screen, and have absorption to the ambient incident light in other directions, from
And reached the high brightness of Projection Display, high contrast is shown.
A kind of short focus orthographic projection display screen screen making method, Fresnel Lenses can be used high transmission optics photosensitive resin or
Heat reactive resin uniformly adds pigment and diffusion particle production composite material, is first coated with composite material wet film, then pass through mold mould
Pressure, finally by curing molding.Specific step is as follows:
Step 1: Mold Making
Phenanthrine mould is processed with precision machine tool.Phenanthrine mould can be flat plate mold, can also be using as schemed
Taper die shown in 5, processes Fresnel structure in cone roller.
Step 2: composite material
Pigment and diffusion particle production composite material are uniformly added using high transmission optics photosensitive resin or heat reactive resin；
Step 3: coating wet film
It is coated with composite material in the hardening counnter attack layer surface made, or is coated on being higher than 85% transmitance resin film
Composite material, and the production of Fresnel Lenses layer is completed, then laminating with hardening counnter attack layer, wet film can be according to optics photosensitive resin
Solidification and demolding performace do semi-solid preparation processing.
Step 4: molding
Use taper die using cone roller small end as the center of circle, the length of cone roller is radius, on the coating wet film in the step 3
Rolling；Or it is directly molded on the coating wet film in the step 3 using flat plate mold.
Step 5: curing molding: the coating wet film after molding being irradiated with ultraviolet light or heating carries out curing molding.Institute
The integral thickness of display screen is stated in 0.10mm-2.0mm.
Each functional layer index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e., along separate projector direction, respectively
Layer material refractive index is sequentially increased.
Reflecting layer is made of metal material in above-mentioned steps three, effect preferably aluminium, silver, chromium.Can by printing, spraying,
Coating or evaporation process production, 0.01 μm of -0.2mm of thickness have high visible reflectivity, are used for reflective projector incident light.
Pigment in above-mentioned steps two is organic pigment or inorganic pigment, and pigment additive amount makes institute in 0.02%wt-6% wt
It states short focus front projection screen and grey black is presented；The diffusion particle is organic diffusion particle or inorganic diffusion particle, diffusion
The additive amount of particle is greater than 85% in 0.02%wt-6% wt, the resin transmitance.
High transmittance resin material of the hardening counnter attack layer by transmitance greater than 85% in above-mentioned steps three is made, described
Resin material is PET, PMMA, PC, and the hardening counnter attack layer is with a thickness of 0.05mm-1.8mm, to it close to the one side of projector
Carrying out hardening and anti-inverse processing or material itself has high rigidity and anti-reflection function, so that the surface hardness close to projector is big
In or be equal to H, and can prevent external environmental light screen surface generate mirror-reflection.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied, all within the spirits and principles of the present invention, made any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (16)
1. a kind of short focus orthographic projection shows screen, which is characterized in that be outside, by outside to inside successively close to projector side
Comprising hardening counnter attack layer, Fresnel Lenses layer, reflecting layer, the smooth surface of Fresnel Lenses layer is towards projector side.
2. a kind of short focus orthographic projection shows screen, which is characterized in that each layer index of refraction relationship is as follows: hardening counnter attack layer < Fei Nie
That lens jacket, i.e., along far from projector direction, layers of material refractive index is sequentially increased.
3. a kind of short focus orthographic projection as described in claim 1 shows screen, which is characterized in that the entirety of the display screen
Thickness is in 0.10mm-2.0mm.
4. a kind of short focus orthographic projection as described in claim 1 shows screen, which is characterized in that the Fresnel Lenses layer packet
It is greater than 85% high transmittance resin material containing transmitance, the high resin material thoroughly uniformly adds pigment, diffusion particle and addition
Agent, the Fresnel Lenses layer are a part by the interception of off-axis interception way from Fresnel Lenses, thickness 0.01mm-
0.2mm, ring is away from 0.02mm-0.3mm.
5. a kind of short focus orthographic projection as claimed in claim 4 shows screen, which is characterized in that the pigment is organic pigment
Or inorganic pigment, pigment additive amount make the short focus front projection screen that grey black be presented in 0.01%wt-10%wt；The expansion
Shot is organic diffusion particle or inorganic diffusion particle, and the additive amount of diffusion particle is in 0.01%wt-10%wt.
6. a kind of short focus orthographic projection as claimed in claim 5 shows screen, which is characterized in that the pigment is organic pigment
Or inorganic pigment, pigment additive amount is in 0.02%wt-6%wt, and the additive amount of the diffusion particle is between 0.02%wt-6%wt.
7. a kind of short focus orthographic projection as described in claim 1 shows screen, which is characterized in that the Fresnel Lenses layer
The direction of annulus working face and the angle of Fresnel Lenses smooth surface edge far from projector is in trend is gradually increased, and specific angle is by throwing
Shadow machine parameter and the short focus orthographic projection show that the refractive index of screen layers of material determines, so that projector's different angle enters
Light is penetrated after reflecting layer is reflected, concentration is parallel with the direction of normal to screen or less parallel projects.
8. a kind of short focus orthographic projection as claimed in claim 7 shows screen, which is characterized in that the Fresnel Lenses layer
Annulus working face can be cambered surface, and projector's incident ray is made to be incident on the every bit in cambered surface by reflected in parallel；Or it adopts
With plane, reflect projector's incident ray by less parallel.
9. a kind of short focus orthographic projection as described in claim 1 shows screen, which is characterized in that the hardening counnter attack layer is by saturating
It crosses high transmittance resin material of the rate greater than 85% to be made, the resin material is PET, PMMA, PC, the hardening counnter attack
Layer has height with a thickness of 0.05mm-1.8mm, to its carry out on one side hardening and anti-inverse processing or material itself close to projector
Hardness and anti-reflection function so that the surface hardness close to projector is greater than or equal to H, and can prevent external environmental light in screen table
Face generates mirror-reflection.
10. a kind of short focus orthographic projection as described in claim 1 shows screen, which is characterized in that the reflecting layer is by metal
Material is made, and thickness is between 0.01 μm of -0.2mm.
11. a kind of short focus orthographic projection as claimed in claim 10 shows screen, which is characterized in that the metal material is
Aluminium, silver, chromium.
12. a kind of short focus orthographic projection display screen screen making method as described in one of claim 1- 11, it is characterised in that packet
Include following steps:
Step 1: Mold Making
Phenanthrine mould is processed with precision machine tool, Phenanthrine mould can be flat plate mold, can also use taper die, bore
Fresnel structure is processed on roller；
Step 2: composite material；
Pigment and diffusion particle production composite material are uniformly added using high transmission optics photosensitive resin or heat reactive resin；
Step 3: coating wet film
It is coated with composite material in the hardening counnter attack layer surface made, or is coated on being higher than 85% transmitance resin film
Composite material, and the production of Fresnel Lenses layer is completed, then laminating with hardening counnter attack layer, wet film can be according to optics photosensitive resin
Solidification and demolding performace do semi-solid preparation processing；
Step 4: molding
Use taper die using cone roller small end as the center of circle, the length of cone roller is radius, on the coating wet film in the step 3
Rolling；Or it is directly molded on the coating wet film in the step 3 using flat plate mold；
Step 5: curing molding: the coating wet film after molding being irradiated with ultraviolet light or heating carries out curing molding；
Step 6: the reflecting layer to be fabricated into the coating of curing molding in step 5 by printing, spraying, coating or evaporation process
On wet film, the reflecting layer is made of metal material, and thickness has high visible reflectivity between 0.01 μm of -0.2mm, is used
In reflective projector incident light.
13. a kind of short focus orthographic projection display screen screen making method as claimed in claim 12, it is characterised in that: each functional layer
Index of refraction relationship is as follows: hardening counnter attack layer < Fresnel Lenses layer, i.e., along far from projector direction, layers of material refractive index is successively
Increase.
14. a kind of short focus orthographic projection display screen screen making method as claimed in claim 12, it is characterised in that: the gold
Belong to is aluminium, silver, chromium.
15. a kind of short focus orthographic projection display screen screen making method as claimed in claim 12, it is characterised in that:
The pigment is organic pigment or inorganic pigment, and pigment additive amount makes the short focus orthographic projection in 0.02%wt-6% wt
Grey black is presented in screen；The diffusion particle is organic diffusion particle or inorganic diffusion particle, and the additive amount of diffusion particle exists
0.02%wt-6% wt, the resin transmitance are greater than 85%.
16. a kind of short focus orthographic projection display screen screen making method as claimed in claim 12, it is characterised in that: the hardening
Counnter attack layer is made of transmitance greater than 85% high transmittance resin material, and the resin material is PET, PMMA, PC, described
Hardening counnter attack layer with a thickness of 0.05mm-1.8mm, hardening and anti-inverse processing or material are carried out on one side close to projector to it
Itself has high rigidity and anti-reflection function, so that the surface hardness close to projector is greater than or equal to H, and can prevent external environment
Light generates mirror-reflection in screen surface.
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| CN201710781081.7A CN109426062A (en) | 2017-09-01 | 2017-09-01 | A kind of short focus orthographic projection shows screen and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710781081.7A CN109426062A (en) | 2017-09-01 | 2017-09-01 | A kind of short focus orthographic projection shows screen and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022152310A1 (en) * | 2021-01-18 | 2022-07-21 | 维业达科技(江苏)有限公司 | Projector curtain |
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| JP2002014423A (en) * | 2000-06-30 | 2002-01-18 | Toppan Printing Co Ltd | Projection screen and transmission type projection television using the same |
| CN102221771A (en) * | 2011-06-28 | 2011-10-19 | 成都菲斯特科技有限公司 | Rear projection screen for visual simulation |
| CN104777708A (en) * | 2014-01-15 | 2015-07-15 | Lg电子株式会社 | Reflective screen, display having the same and method for manufacturing reflective screen |
| CN106338878A (en) * | 2016-11-16 | 2017-01-18 | 四川长虹电器股份有限公司 | Short-focus positive-projection display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618475A1 (en) * | 1993-03-31 | 1994-10-05 | Hughes Aircraft Company | Flat panel display using rear projection screen |
| JP2002014423A (en) * | 2000-06-30 | 2002-01-18 | Toppan Printing Co Ltd | Projection screen and transmission type projection television using the same |
| CN102221771A (en) * | 2011-06-28 | 2011-10-19 | 成都菲斯特科技有限公司 | Rear projection screen for visual simulation |
| CN104777708A (en) * | 2014-01-15 | 2015-07-15 | Lg电子株式会社 | Reflective screen, display having the same and method for manufacturing reflective screen |
| CN106338878A (en) * | 2016-11-16 | 2017-01-18 | 四川长虹电器股份有限公司 | Short-focus positive-projection display screen |
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|---|---|---|---|---|
| WO2022152310A1 (en) * | 2021-01-18 | 2022-07-21 | 维业达科技(江苏)有限公司 | Projector curtain |
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Application publication date: 20190305 |