CN109188849A - Projection screen and optical projection system - Google Patents
Projection screen and optical projection system Download PDFInfo
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- CN109188849A CN109188849A CN201811308478.5A CN201811308478A CN109188849A CN 109188849 A CN109188849 A CN 109188849A CN 201811308478 A CN201811308478 A CN 201811308478A CN 109188849 A CN109188849 A CN 109188849A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 238000003384 imaging method Methods 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 239000003086 colorant Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 43
- 230000007423 decrease Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 36
- 229910052681 coesite Inorganic materials 0.000 description 19
- 229910052906 cristobalite Inorganic materials 0.000 description 19
- 239000000377 silicon dioxide Substances 0.000 description 19
- 229910052682 stishovite Inorganic materials 0.000 description 19
- 229910052905 tridymite Inorganic materials 0.000 description 19
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 10
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229910052593 corundum Inorganic materials 0.000 description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 description 5
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052934 alunite Inorganic materials 0.000 description 2
- 239000010424 alunite Substances 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011222 crystalline ceramic Substances 0.000 description 1
- 229910002106 crystalline ceramic Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- G03B21/62—Translucent screens
- G03B21/625—Lenticular translucent screens
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Projection screen provided by the invention and optical projection system, are related to projection art.Wherein, the projection screen includes: substrate layer；It is made in the laminated filter membranous layer of the substrate；It is made in imaging layer of the substrate layer far from the filter membranous layer one side；It is made in the imaging layer reflexed light film laminated far from the substrate.The filter membranous layer includes the first film layer and has the second film layer of different refractivity with first film layer, so that the filter membranous layer can penetrate the light of redgreenblue, and absorbs the light of other colors other than redgreenblue.The reflexed light film includes third membrane layer and has the 4th film layer of different refractivity with the third membrane layer, so that the reflexed light film can reflect the light of redgreenblue, and absorbs the light of other colors other than redgreenblue.By above-mentioned setting, the poor problem of imaging effect existing for existing projection screen can be improved.
Description
Technical field
The present invention relates to projection arts, in particular to a kind of projection screen and optical 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 layer plays important as a key structure of imaging display in projection screen
Effect.
Through inventor the study found that in existing projection screen, it is incident in the light beam of imaging layer in addition to projector is defeated
Light beam out further includes the light beam issued in the environment where projection screen there are other light sources or natural light.Wherein, the light beam
Or natural light mixed with the light beam that projector exports after will lead to the poor problem of imaging effect.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of projection screen and optical projection system, to improve existing projection
The poor problem of imaging effect existing for screen.
To achieve the above object, the embodiment of the present invention adopts the following technical scheme that
A kind of projection screen, comprising:
Substrate layer；
It is made in the laminated filter membranous layer of the substrate；
It is made in imaging layer of the substrate layer far from the filter membranous layer one side；
It is made in the imaging layer reflexed light film laminated far from the substrate；
Wherein, the filter membranous layer includes the first film layer and has the second film layer of different refractivity with first film layer,
So that the filter membranous layer can penetrate the light of redgreenblue, and absorb the light of other colors other than redgreenblue；
The reflexed light film includes third membrane layer and has the 4th film layer of different refractivity with the third membrane layer, so that institute
The light of redgreenblue can be reflected by stating reflexed light film, and absorb the light of other colors other than redgreenblue.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, first film layer is multilayer, described the
Two film layers are multilayer；
Wherein, the second film layer described in the first film layer and multilayer described in multilayer is arranged alternately, so that two layers first of arbitrary neighborhood
It is provided between film layer between two layers one layer of second film layer, arbitrary neighborhood of second film layers and is provided with one layer of first film
Layer.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, the third membrane layer is multilayer, described the
Four film layers are multilayer；
Wherein, the 4th film layer described in third membrane layer and multilayer described in multilayer is arranged alternately, so that two layers of third of arbitrary neighborhood
It is provided between film layer between two layers one layer of the 4th film layer, arbitrary neighborhood of the 4th film layers and is provided with one layer of tertiary membrane
Layer.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, further includes:
Optical structure layers, the optical structure layers are between the imaging layer and the reflexed light film, to incident light
The direction of propagation of beam is adjusted.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, the optical structure layers are round luxuriant and rich with fragrance alunite
That lens arrangement, linear light grid structure, pyramid-shaped structures or prismatic table shape structure.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, the optical structure layers are round luxuriant and rich with fragrance alunite
That lens arrangement, and include:
Close to the smooth surface of the imaging layer；
Close to the structural plane of the reflexed light film, which has concentric loop structure；
Wherein, the section of the circular Fresnel lens structure is zigzag in the structural plane side, and each sawtooth
Included angle is incremented by successively or successively decreases.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, the substrate layer includes:
First base material layer, the first base material layer is between the filter membranous layer and the imaging layer；
Second substrate layer, second substrate layer is between the imaging layer and the optical structure layers.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, further includes:
Basal layer, the basal layer is between the filter membranous layer and the substrate layer, so that the filter membranous layer passes through
The basal layer fixation is made in the substrate layer.
In the embodiment of the present invention preferably selects, in above-mentioned projection screen, further includes:
First anti-scratch layer, first anti-scratch layer are located at one side of the filter membranous layer far from the substrate layer；
Second anti-scratch layer, second anti-scratch layer are located at one side of the reflexed light film far from the imaging layer.
The embodiment of the invention also provides a kind of optical projection system, including laser projection and defeated based on the laser projection
Light beam out carries out the projection screen of imaging display, which includes:
Substrate layer；
It is made in the laminated filter membranous layer of the substrate；
It is made in imaging layer of the substrate layer far from the filter membranous layer one side；
It is made in the imaging layer reflexed light film laminated far from the substrate；
Wherein, the filter membranous layer includes the first film layer and has the second film layer of different refractivity with first film layer,
So that the filter membranous layer can penetrate the light of redgreenblue, and absorb the light of other colors other than redgreenblue；
The reflexed light film includes third membrane layer and has the 4th film layer of different refractivity with the third membrane layer, so that institute
The light of redgreenblue can be reflected by stating reflexed light film, and absorb the light of other colors other than redgreenblue.
Projection screen provided by the invention and optical projection system, by being arranged by the first different film layer of refractive index and the second film
The filter membranous layer of layer composition, the reflexed light film being made of the different third membrane layer of refractive index and the 4th film layer, to absorb RGB
The light of other colors other than three colors, it is possible to prevente effectively from the light beam of other colors in environment light other than redgreenblue enters
Imaging layer, and with projector output light beam mix after, the imaging effect of imaging layer is impacted, and then lead to imaging effect
Poor problem, contrast, color rendition, luminance gain and the color when greatly improving projection screen imaging are quasi-.
To enable the above objects, features and advantages of the present invention 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 in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of projection screen provided in an embodiment of the present invention.
Fig. 3 is the structural schematic diagram of filter membranous layer provided in an embodiment of the present invention.
Fig. 4 is the structural schematic diagram of reflexed light film provided in an embodiment of the present invention.
Fig. 5 is another structural schematic diagram of projection screen provided in an embodiment of the present invention.
Fig. 6 is another structural schematic diagram of projection screen provided in an embodiment of the present invention.
Fig. 7 is the structural schematic diagram of optical structure layers provided in an embodiment of the present invention.
Fig. 8 is another structural schematic diagram of projection screen provided in an embodiment of the present invention.
Fig. 9 is another structural schematic diagram of projection screen provided in an embodiment of the present invention.
Icon: 10- optical projection system；100- projection screen；110- filter membranous layer；The first film layer of 111-；The second film layer of 113-；
120- substrate layer；121- first base material layer；The second substrate layer of 123-；130- imaging layer；140- reflexed light film；141- tertiary membrane
Layer；The 4th film layer of 143-；150- optical structure layers；151- structural plane；153- sawtooth；160- basal layer；The first scratch resistance of 170-
Layer；The second anti-scratch layer of 180-；200- laser projection.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
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 description of the invention
In, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply opposite
Importance.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
As shown in Figure 1, may include projection screen 100 and laser the embodiment of the invention provides a kind of optical projection system 10
Projector 200.Wherein, the laser projection 200 can be with output beam to the projection screen 100, the projection screen 100
The light beam that can be exported based on the laser projection 200 is carried out imaging and shown.
Optionally, the optical device that the laser projection 200 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.
In conjunction with Fig. 2, the embodiment of the present invention also provides a kind of projection screen 100 that can be applied to above-mentioned optical projection system 10.Its
In, the projection screen 100 may include filter membranous layer 110, substrate layer 120, imaging layer 130 and reflexed light film 140, with shape
At a kind of front projection screen.
In detail, the front projection screen refers to, laser projection 200 and viewer are located at projection screen in the application
100 the same side.Also, the filter membranous layer 110 can be made in the one side of the substrate layer 120, and the imaging layer 130 can
To be made in the one side of the substrate layer 120 far from the filter coating, the reflexed light film 140 can be made in the imaging layer
130 one sides far from the substrate layer 120.
Wherein, in conjunction with Fig. 3, the filter membranous layer 110 may include the first film layer 111 and the second film layer 113.Also, institute
It is different from the refractive index of second film layer 113 to state the first film layer 111, so that the filter membranous layer 110 can penetrate RGB
The light of three colors, and absorb the light of other colors other than redgreenblue.
By above-mentioned setting, the light of other colors other than redgreenblue is can be absorbed in the filter membranous layer 110, to have
Effect avoids the light beam of other colors in environment light other than redgreenblue from entering imaging layer 130, and defeated with laser projection 200
After light beam mixing out, the problem that the imaging effect of imaging layer 130 is impacted, and then causes imaging effect poor, greatly
Contrast, color rendition, luminance gain and the color that ground improves when projection screen 100 is imaged are quasi-.
Optionally, the quantity of first film layer 111 and second film layer 113 is unrestricted, can be according to actually answering
It is configured with demand.In the present embodiment, first film layer 111 can be multilayer, and second film layer 113 can be more
Layer.
Wherein, the distribution mode of the second film layer 113 described in the first film layer 111 and multilayer described in multilayer is unrestricted, can be with
It is configured according to practical application request, for example, being also possible to arbitrarily set either be configured according to certain rule
It sets.In the present embodiment, the second film layer 113 described in the first film layer 111 and multilayer described in multilayer can be arranged alternately, that is,
It says, one layer of second film layer 113 is provided between the first film layer 111 described in two layers of arbitrary neighborhood, described in two layers of arbitrary neighborhood
One layer of first film layer 111 is provided between second film layer 113.
Also, the quantity of first film layer 111 and second film layer 113 is also possible to not phase either equal
Deng.Wherein, when quantity is equal, distribution mode is either the first film layer 111, the second film layer 113, the first film layer
111 ..., the second film layer 113, the first film layer 111, the second film layer 113, are also possible to the second film layer 113, the first film layer
111, the second film layer 113 ..., the first film layer 111, the second film layer 113, the first film layer 111.When quantity is unequal, point
Mode for cloth either the first film layer 111, the second film layer 113, the first film layer 111 ..., the second film layer 113, the first film layer
111, be also possible to the second film layer 113, the first film layer 111, the second film layer 113 ..., the first film layer 111, the second film layer
113。
In detail, and distribution mode equal in quantity is the first film layer 111, the second film layer 113, the first film layer
111 ..., when the second film layer 113, the first film layer 111, the second film layer 113, a kind of feasible show is present embodiments provided
Example, to realize the purpose of the light of other colors other than the light and absorption redgreenblue through redgreenblue.Wherein, described
The material of first film layer 111 can be Ta2O5, the material of second film layer 113 can be SiO2.Also, each first film
Layer 111 and the thickness ratio of each second film layer 113 can be 1.1757:1.773:1.0252:1.0188:2.3808:
1.5190:0.8496:0.8752:2.0542:0.7722:1.8582:0.4193:1.2078: 0.9:0.6269:0.378:
1.4375:1.5064:1.7332:2.9157:1.0845:0.013.
In quantity equal and distribution mode be the second film layer 113, the first film layer 111, the second film layer 113 ..., first
When film layer 111, the second film layer 113, the first film layer 111, a kind of feasible example is present embodiments provided, to realize through red green
The light of blue three colors and the purpose of the light of other colors other than absorption redgreenblue.Wherein, the material of first film layer 111
It can be Ta2O5, the material of second film layer 113 can be SiO2.Also, each second film layer 113 and each described first
The thickness ratio of film layer 111 can be 1.5648:0.9862:0.9350:0.9187:1.9359:1.7719:1.1049:
0.5443:0.3618:0.9604:0.9785:1.2185:1.279:0.951:4.0045:2. 0396:0.3455:0.1936:
0.022:0.0145.
In quantity unequal and distribution mode be the first film layer 111, the second film layer 113, the first film layer 111 ..., the
When two film layers 113, the first film layer 111, a kind of feasible example is present embodiments provided, to realize the light for penetrating redgreenblue
And the purpose of the light of other colors other than absorption redgreenblue.Wherein, the material of first film layer 111 can be
Ta2O5, the material of second film layer 113 can be SiO2.Also, each first film layer 111 and each second film layer
113 thickness ratio can be 1.1609:1.2242:1.0096:0.9540:0.2554:0.6805:0.9170:1.9062:
1.9725:0.9098:0.9245:0.9455:1.3526:1.2838:1.8729:1.0697: 2.1901:0.1834:0.0254.
In quantity unequal and distribution mode be the second film layer 113, the first film layer 111, the second film layer 113 ..., the
When one film layer 111, the second film layer 113, a kind of feasible example is present embodiments provided, to realize the light for penetrating redgreenblue
And the purpose of the light of other colors other than absorption redgreenblue.Wherein, the material of first film layer 111 can be
Ta2O5, the material of second film layer 113 can be SiO2.Also, each second film layer 113 and each first film layer
111 thickness ratio can be 1.3983:0.3818:3.415:1.6593:2.3062:1.7991:0.9615:0.9795:
1.172:1.2946:2.2149:0.6846:0.8578:2.515:3.1751:0.8577:0. 8797:2.4467:0.0235.
Wherein, the thickness of each first film layer 111 and each second film layer 113, can be in above-mentioned each ratio value
On the basis of multiplied by a coefficient value, which can be configured according to the light transmittance that filter membranous layer 110 needs.For example,
When the filter membranous layer 110 is needed to the light of 700nm light transmittance with higher, which can be (700/4) nm.And
And the value of above-mentioned each ratio value is unrestricted, can be configured according to practical application request, as long as greater than 0 and small
In or equal to 10.
It is understood that the material of first film layer 111 is Ta in above-mentioned each example2O5, second film layer
113 material is SiO2It is a kind of application example that can be substituted, without a kind of unique feasible embodiment should be limited to.
That is, first film layer 111 and second film layer 113 can also combine to be formed by other materials, for example, can be with
Include, but are not limited to TiO2/SiO2、Nb2O5/SiO2、Al2O3/SiO2、HfO2/SiO2、TiO2/MgF2、Nb2O5/MgF2、Ta2O5/
MgF2、Al2O3/MgF2、HfO2/MgF2Contour, low-index material combination.
Also, in above-mentioned application example, the quantity for each film layer that the filter membranous layer 110 includes is unrestricted, can be with
It is configured according to practical application request, for example, the quantity for each film layer that the filter membranous layer 110 includes can be to be greater than or wait
In 18 and be less than or equal to 400.
Optionally, the concrete type of the substrate layer 120 is unrestricted, can be configured according to practical application request,
For example, either flexible structure, is also possible to the structure with certain rigidity.Wherein, flexible structure may include, but unlimited
In flexible plastic films such as PE, PVC, CPP, BOPP, PC, PET, PA or TPU.May include with certain rigid structure, but
It is not limited to the transparent substrates such as glass, acrylic.
Also, the substrate layer 120 is unrestricted to the light transmittance of visible light, can be set according to practical application request
It sets.It in the present embodiment, is the effect for guaranteeing imaging display, the light transmittance of the substrate layer 120 can be greater than or equal to 75%.
Optionally, the concrete type of the imaging layer 130 is unrestricted, can be configured according to practical application request,
For example, it may be resin layer, is also possible to that minuteness particle will be added to increase the diffusivity to light beam in resin layer.
In conjunction with Fig. 4, the reflexed light film 140 may include third membrane layer 141 and the 4th film layer 143.Also, the third
Film layer 141 is different with the refractive index of the 4th film layer 143, so that the reflexed light film 140 can reflect redgreenblue
Light, and absorb the light of other colors other than redgreenblue.
Optionally, the quantity of the third membrane layer 141 and the 4th film layer 143 is unrestricted, can be according to actually answering
It is configured with demand.In the present embodiment, the third membrane layer 141 can be multilayer, and the 4th film layer 143 can be more
Layer.
Wherein, the distribution mode of the 4th film layer 143 described in third membrane layer 141 and multilayer described in multilayer is unrestricted, can be with
It is configured according to practical application request, for example, being also possible to arbitrarily set either be configured according to certain rule
It sets.In the present embodiment, the 4th film layer 143 described in third membrane layer 141 and multilayer described in multilayer can be arranged alternately, that is,
It says, one layer of the 4th film layer 143, two layers of the 4th film layers of arbitrary neighborhood is provided between two layers of third membrane layer of arbitrary neighborhood 141
One layer of third membrane layer 141 is provided between 143.
Also, the quantity of the third membrane layer 141 and the 4th film layer 143 is also possible to not phase either equal
Deng.Wherein, specific distribution mode is referred to the distribution of the first film layer 111 and the second film layer 113 in above-mentioned filter membranous layer 110
Mode, this is no longer going to repeat them.
In detail, and distribution mode equal in quantity is third membrane layer 141, the 4th film layer 143, third membrane layer
141 ..., when the 4th film layer 143, third membrane layer 141, four film layers 143, a kind of feasible show is present embodiments provided
Example, with the purpose of the light of other colors other than the light of realization reflection redgreenblue and absorption redgreenblue.Wherein, described
The material of third membrane layer 141 can be Ta2O5, the material of the 4th film layer 143 can be SiO2.Also, each tertiary membrane
Layer 141 and the thickness ratio of each 4th film layer 143 can be, 2.2533,1.7807,1.3634,0.8593,2.6807,
1.5430、1.6915、1.8311、0.6589、1.8712、0.6033、0.6611、1.3548、0.9307、0.83、0.5007、
2.6926、1.9117、2.7919、2.5939、1.9604、1.1691、2.0211、2.0012。
In quantity equal and distribution mode be the 4th film layer 143, third membrane layer 141, the 4th film layer 143 ..., third
When film layer 141, the 4th film layer 143, third membrane layer 141, a kind of feasible example is present embodiments provided, to realize that reflection is red green
The light of blue three colors and the purpose of the light of other colors other than absorption redgreenblue.Wherein, the material of the third membrane layer 141
It can be Ta2O5, the material of the 4th film layer 143 can be SiO2.Also, each 4th film layer 143 and each third
The thickness ratio of film layer 141 can be 0.9811:0.9975:0.1382:0.9073:1.1976:0.9753:0.5649:4.003:
1.0146:0.266:1.1052:2.5391:1.1306:3.4189:0.9967:1.0761:1 .1626:0.011:0.023:
0.0152。
In quantity unequal and distribution mode be third membrane layer 141, the 4th film layer 143, third membrane layer 141 ..., the
When four film layers 143, third membrane layer 141, a kind of feasible example is present embodiments provided, to realize the light of reflection redgreenblue
And the purpose of the light of other colors other than absorption redgreenblue.Wherein, the material of the third membrane layer 141 can be
Ta2O5, the material of the 4th film layer 143 can be SiO2.Also, each third membrane layer 141 and each 4th film layer
143 thickness ratio can be, 1.4347,0.9025,2.3245,0.9605,2.6064,1.8243,1.0624,1.0293,
0.3972、1.4203、0.7972、0.1216、2.6647、2.3339、0.7576、2.0144、0.0123。
In quantity unequal and distribution mode be the 4th film layer 143, third membrane layer 141, the 4th film layer 143 ..., the
Three film layers 141, the 4th film layer 143 present embodiments provide a kind of feasible example, with realize reflection redgreenblue light and
Absorb the purpose of the light of other colors other than redgreenblue.Wherein, the material of the third membrane layer 141 can be Ta2O5,
The material of 4th film layer 143 can be SiO2.Also, the thickness of each 4th film layer 143 and each third membrane layer 141
Spending ratio can be 1.0068:0.9979:2.2405:3.1306:0.2441:0.4243:0.9504:0.6499: 0.9836:
0.9486:1.7786:2.7717:0.9281:2.7483:0.4327:0.8176:0.5342.
Wherein, the thickness of each third membrane layer 141 and each 4th film layer 143, can be in above-mentioned each ratio value
On the basis of multiplied by a coefficient value, which can be configured according to the reflectivity that reflexed light film 140 needs.For example,
When the reflexed light film 140 is needed to the light of 500nm reflectivity with higher, which can be (500/4) nm.And
And the value of above-mentioned each ratio value is unrestricted, can be configured according to practical application request, as long as greater than 0 and small
In or equal to 10.
It is understood that the material of the third membrane layer 141 is Ta in above-mentioned each example2O5, the 4th film layer
143 material is SiO2It is a kind of application example that can be substituted, without a kind of unique feasible embodiment should be limited to.
That is, the third membrane layer 141 and the 4th film layer 143 can also combine to be formed by other materials, for example, can be with
Include, but are not limited to TiO2/SiO2、Nb2O5/SiO2、Al2O3/SiO2、HfO2/SiO2、TiO2/MgF2、Nb2O5/MgF2、Ta2O5/
MgF2、Al2O3/MgF2、HfO2/MgF2Contour, low-index material combination.
Also, in above-mentioned application example, the quantity for each film layer that the reflexed light film 140 includes is unrestricted, can be with
It is configured according to practical application request, for example, the quantity for each film layer that the reflexed light film 140 includes can be to be greater than or wait
In 18 and be less than or equal to 400.
Further, to adjust brightness of the direction of propagation of the light beam in the projection screen 100 to improve imaging display,
In the present embodiment, in conjunction with Fig. 5, the projection screen 100 can also include optical structure layers 150.
Wherein, the optical structure layers 150 are between the imaging layer 130 and the reflexed light film 140, that is,
It says, the optical structure layers 150 can be made far from the one side of the substrate layer 120 in the imaging layer 130, and making
Cheng Hou makes the reflexed light film 140 far from the one side of the imaging layer 130 in the optical structure layers 150.
Optionally, the type of the optical structure layers 150 is unrestricted, can be configured according to practical application request,
As long as the direction of propagation for capableing of light beam effectively is adjusted, for example, may include, but it is saturating to be not limited to circular Fresnel
Mirror structure, linear light grid structure, pyramid-shaped structures or prismatic table shape structure.Also, the linear light grid structure is either column grating,
It is also possible to zigzag grating.It is described, it both may include trigone, tetragonous in the pyramid-shaped structures and the prismatic table shape structure,
It also may include the rib of other quantity.
Wherein, in conjunction with Fig. 6, when the optical structure layers 150 are circular Fresnel lens structure, may include smooth surface and
Structural plane 151,151 imprinting of structural plane have concentric loop structure.Also, the smooth surface is close to the imaging layer 130, the knot
Structure face 151 is close to the reflexed light film 140.That is, light beam successively passes through the light after the imaging layer 130 output
The reflexed light film 140 is transmitted to behind face and the structural plane 151.
The section of the optical texture can be made in the structure by the setting of above-mentioned concentric loop structure in conjunction with Fig. 7
The side in face 151 forms laciniation.Also, the laciniation may include multiple continuous sawtooth 153.
Wherein, in order to which the transmission direction to the light beam by the structural plane 151 is effectively adjusted, the multiple company
The angle of the angle of continuous sawtooth 153 can be incremented by successively or successively decreases.In detail, in actual use, laser projection
The light beam of 200 outputs can be exported along upwardly inclined direction to the projection screen 100, therefore, the angle of each sawtooth 153
Angle can successively successively decrease from the bottom up.
Further, the optical structure layers 150 can also be is made in the imaging layer 130 indirectly.In the present embodiment
In, in conjunction with Fig. 8, the substrate layer 120 may include first base material layer 121 and the second substrate layer 123.
Wherein, the first base material layer 121 is between the filter membranous layer 110 and the imaging layer 130, and described second
Substrate layer 123 is between the imaging layer 130 and the optical structure layers 150.That is, the imaging layer 130 can be with
It is made in the first base material layer 121, the optical structure layers 150 can be made in second substrate layer 123, then again will
Second substrate layer 123 fits in the imaging layer 130.
It further, is the connective stability for improving the filter membranous layer 110 and the substrate layer 120, in the present embodiment
In, the projection screen 100 can also include basal layer 160.
Wherein, the basal layer 160 is between the filter membranous layer 110 and the substrate layer 120, so that the optical filtering
Film layer 110 is made in the substrate layer 120 by the basal layer 160 fixation.That is, can be first in the substrate layer
One layer of basal layer 160 is made on 120, then production forms the filter membranous layer 110 on the basal layer 160.
Also, the specific material of the basal layer 160 is unrestricted, can be configured according to practical application request, only
Want adhesive force with higher.Also, the thickness of the basal layer 160 is unrestricted, can be according to practical application request
It is configured.In the present embodiment, it is contemplated that 110 general thickness of filter membranous layer of production is larger, to guarantee the stability connected,
The thickness of the basal layer 160 can be less than or equal to 50nm.
Wherein, the connective stability between each first film layer 111 and each second film layer 113 to improve production, Ke Yi
When making film layer, the temperature and vacuum degree of production environment are controlled, to guarantee the tightness between each film layer.
Further, to be protected to the filter membranous layer 110 and the reflexed light film 140, in the present embodiment, knot
Fig. 9 is closed, the projection screen 100 can also include the first anti-scratch layer 170 and the second anti-scratch layer 180.
Wherein, first anti-scratch layer 170 is located at one side of the filter membranous layer 110 far from the substrate layer 120, with
It avoids the filter membranous layer 110 from being scratched far from the one side of the substrate layer 120 by external devices, and then filter effect is caused to reduce
The problem of.Second anti-scratch layer 180 is located at one side of the reflexed light film 140 far from the imaging layer 130, to avoid institute
It states reflexed light film 140 to be scratched far from the one side of the imaging layer 130 by external devices, and then leads to asking for filter effect reduction
Topic.
Optionally, the material type of first anti-scratch layer 170 and second anti-scratch layer 180 is unrestricted, can
To be configured according to practical application request, as long as can have preferable adhesion strength, for example, either transparent
The materials such as glass, transparent plastic plate, crystalline ceramics, be also possible to one layer of stable compound-material of property, as resin,
SiO2、Al2O3, silicon nitride etc..
In conclusion projection screen 100 provided by the invention and optical projection system 10, by be arranged by refractive index it is different the
Filter membranous layer 110 that one film layer 111 is constituted with the second film layer 113, by refractive index different third membrane layer 141 and the 4th film layer
143 reflexed light films 140 constituted, to absorb the light of other colors other than redgreenblue, it is possible to prevente effectively from environment light
The light beam of other colors other than redgreenblue enters imaging layer 130, and after mixing with the light beam of projector output, to imaging
The imaging effect problem that impacts, and then cause imaging effect poor of layer 130, greatly improve projection screen 100 at
As when contrast, color rendition, luminance gain and color it is quasi-.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
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| CN201811308478.5A CN109188849A (en) | 2018-11-05 | 2018-11-05 | Projection screen and optical projection system |
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| CN201811308478.5A CN109188849A (en) | 2018-11-05 | 2018-11-05 | Projection screen and optical projection system |
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