CN207216263U - It is totally reflected screen and optical projection system - Google Patents
It is totally reflected screen and optical projection system Download PDFInfo
- Publication number
- CN207216263U CN207216263U CN201720970696.XU CN201720970696U CN207216263U CN 207216263 U CN207216263 U CN 207216263U CN 201720970696 U CN201720970696 U CN 201720970696U CN 207216263 U CN207216263 U CN 207216263U
- Authority
- CN
- China
- Prior art keywords
- total reflection
- layer
- light
- screen
- reflection screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The utility model discloses a kind of total reflection screen of environment resistant light and the optical projection system using the screen.The screen can reflex to projection ray in the field range of beholder, it includes the light diffusion layer, total reflection layer and light absorbing layer being sequentially arranged from the light incident side of the projection ray, the light absorbing layer can absorb the light of incidence, and the light diffusion layer is used for the angle of divergence for increasing the light of outgoing.Total reflection layer is included in multiple microstructure units of continuous extension and rotational symmetry in the plane of the total reflection screen, each microstructure unit includes the microstructured layers positioned at the light diffusion layer side and the la m positioned at the light absorbing layer side, interface between microstructured layers and la m is two intersecting planes, the refractive index of microstructured layers is more than the refractive index of la m, and described two intersecting planes are provided so that the projection ray is continuously totally reflected at two intersecting planes.
Description
Technical field
It the utility model is related to projection screen and optical projection system.Specifically, the utility model is related to one kind being capable of environment resistant
The high-contrast total reflection screen of light and the optical projection system using the screen.
Background technology
In recent years, with the continuous improvement of projector's brightness, projection display system is in the application of large scale home theater
Advantage starts to embody.Compared to LCD-TV and OLED TVs, the size of projection display system is small, is easily installed, can be with
The display picture more than 100 cun is easily realized, and whole system price is relatively low.
In family's application environment, projection display system is often installed in parlor.Parlor generally has well oneself
Right lighting conditions and bright lighting source, thus substantial amounts of environment veiling glare be present.In general projector screen can reflect
The light of projector also can reflection environment light light.In this environment, due to affected by ambient light, through projection
Contrast of the contrast for the picture that the light of screen reflection is formed well below projector itself.Ring be present to improve
Display Contrast in the case of the light of border, at present the projection screen of environment resistant light all using array microstructure add reflection layer or
The method of person's light absorbing layer is realized.
For example, as shown in Fig. 1 a and b, one is proposed in Publication No. CN105408777A Chinese patent application
The Fresnel optical screen structure of kind circular symmetry.The screen adds the technical side of light absorbing layer using array microstructure
Case.The array microstructure of the screen is made up of lens face 32 and non-lens face 33.Lens face 32 and the angle of screen plane are less than
Non- lens face 33 and the angle of screen plane, the incident ray of projector are only incided on the lens face 32 with small angle.
The light being incident on lens face 32 is anti-by the reflecting layer 20 being made up of the multiple metallic films 25 being laminated in its surface
It is incident upon beholder side.Although the screen can reflex to the incident ray of projector the eyes of spectators, specular layer 20
Inevitably while it can also reflect from the incident light in other directions, such as the veiling glare in environment, so can not greatly improve
The contrast of projection screen.In order to improve contrast, it is also necessary to add one layer of dyed layer in the beholder side of array microstructure
42.Dyed layer 42 absorbs veiling glare, but also absorbs part projection ray.Therefore, although improving the contrast of screen, drop
The low optical efficiency of whole optical projection system, is compromised equivalent between contrast and optical efficiency.In the market
The screen gain that the projection screen using the structure of volume production can be realized is only about 0.9~1.1.
A kind of reflective viewing screen is disclosed in Publication No. CN1670618A Chinese patent application, the reflective screen
Curtain has the micro-structural as shown in Fig. 2 a.The unit of the micro-structural is made up of two inclined-planes, is formed by the reflection resin of white
Inclined-plane 3 towards projector, for reflecting the light from projector, chamfered surface upward is coated with the light absorbs of black
Layer 4, for absorbing incident ambient light above screen.Disclosed in Publication No. CN1693989A Chinese patent applications
Screen has similar structure, and as shown in Fig. 2 b, the base material for forming micro-structural is light absorbing material, directed downwardly
Chamfered surface reflects the light from projector coated with white resin layer 6.In addition, in Publication No. CN1954260A
State's patent application it is also proposed a kind of reflective viewing screen.As shown in Fig. 2 c, light absorption department 14 and the formation of reflecting layer 13 have isosceles
The micro-structural of trapezoid cross section, ambient light are absorbed by light absorption department 14, and throw light is totally reflected on the surface of light absorption department 14,
Reflected in trapezoidal narrow side bottom surface by reflecting layer 13.
In order to realize the purpose for improving contrast, it is respectively provided with the micro-structural of above-mentioned screen for absorbing light and/or anti-
Penetrate the optical functional layer of light.But because the size of micro-structural is very small, spacing typically in the range of 25 to 250 microns,
The technique of the coating optical functional layer of micro-structure surface selectivity is extremely complex, and yield rate is low, and optical efficiency is not high.
Utility model content
In view of the above-mentioned problems, the utility model it is expected that screen can be improved while high-contrast is obtained by providing one kind
Gain, and processing technology can be simplified, reduce the total reflection screen and optical projection system of cost.
According to embodiment of the present utility model, a kind of total reflection screen is disclosed, the total reflection screen is included from described
Light diffusion layer, total reflection layer and the light absorbing layer that the light incident side of projection ray is sequentially arranged, the light absorbing layer can be absorbed into
The light penetrated, the light diffusion layer are used for the angle of divergence for increasing the light of outgoing,
The total reflection layer is comprised at least positioned at the microstructured layers of the light diffusion layer side and positioned at the light absorbing layer side
La m, the refractive indexes of the microstructured layers is more than the refractive index of the la m, is provided with the microstructured layers multiple
Microstructure unit, multiple microstructure units continuous extension and rotational symmetry in the plane of the total reflection screen,
Wherein, two intersecting planes that each microstructure unit includes are provided so that the projection ray continuously exists
It is totally reflected at described two intersecting planes,
At least partly transmissive totally reflected ambient light is absorbed by light absorbing layer.
Preferably, the microstructured layers are arranged to the total reflection prism of rotational symmetry, described two intersecting planes with it is described
The angle for being totally reflected the plane of screen is respectively θ1And θ2, and θ1And θ2Meet relation：θ1+θ2＜ 90.
Each microstructure unit continuously extended in the plane of the total reflection screen is relative to total reflection screen
The setting at the inclination angle of plane can be identical but it is also possible to be different.For example, in multiple microstructure units,
Each θ1With different angles and each θ2It is equal to 45 degree.Or in multiple microstructure units, it is each described
θ1With different angles, and each θ2Also there is different angles.
Preferably, the refractive index n of the microstructured layers1With the refractive index n of the la m2Meet relation：n2<n1-
0.2.For example, the la m is air layer.
Preferably, the light diffusion layer can be micro- by volume scattering film, irregular surface scattering film and regular surfaces
What one of lens array membrane was formed.Or the light diffusion layer can also be by being laminated volume scattering film, not advising
Then at least one of surface scattering film and regular surfaces microlens array film and formed.
Preferably, described two intersecting planes of each microstructure unit are provided so that the projection ray exists
Occur to advance along the direction parallel with the plane of the total reflection screen after being totally reflected for the first time.
Preferably, the center of rotation axis of multiple microstructure units of rotational symmetry is perpendicular to the total reflection screen
The plane of curtain and the lower section for being located at the total reflection screen.
A kind of optical projection system is disclosed according to another embodiment of the present utility model, the system includes as described above
It is totally reflected screen and the projector.Wherein, the projector is preferably located at ultrashort Jiao below the total reflection screen
Projector.
As described above, at least had the following advantages that according to total reflection screen of the present utility model and optical projection system：
(1) micro-structural is reflected projection ray using total reflection principle, for absorbing the light absorbing layer of environment veiling glare
It is integrally provided at the back side of micro-structural, it is not necessary to coated metal reflectance coating or light absorbing layer in micro-structural, reduce into
This, improves yield rate.
(2) micro-structural reflects at least part light from projector using the angle selective properties of total reflection, while but
Substantially not towards the viewing areas reflection environment veiling glare of beholder.Environment veiling glare from top is largely through the micro- knot of total reflection
Structure, absorbed by the light absorbing layer at the back side, fraction is reflected onto outside the viewing areas of beholder, therefore is improving perspective view
Optical efficiency is improved while the contrast of picture.
It should be appreciated that the beneficial effects of the utility model are not limited to the effect above, and can be described herein any
Beneficial effect.
Brief description of the drawings
Fig. 1 is the schematic diagram for the example for showing projection screen of the prior art.
Fig. 2 is the schematic diagram for the other examples for showing projection screen of the prior art.
Fig. 3 is the structural representation for showing the optical projection system according to the utility model embodiment.
Fig. 4 is the totally reflected rotational symmetry knot for showing the total reflection screen according to the utility model embodiment
The schematic diagram of structure.
Fig. 5 is the totally reflected microstructure unit for showing the total reflection screen according to the utility model embodiment
Cross section structure schematic diagram.
Fig. 6 is the optics for the totally reflected micro-structural for showing the total reflection screen according to the utility model embodiment
The schematic diagram of principle.
Fig. 7 is the selection of the optical tilt for the micro-structural for showing the total reflection screen according to the utility model embodiment
Schematic diagram.
Fig. 8 is the optical angle for the microstructure unit for showing the total reflection screen according to the utility model embodiment
Simulative example.
Fig. 9 is to show the total reflection layer of total reflection screen and the material of light absorbing layer according to the utility model embodiment
Expect the range of choice schematic diagram of refractive index.
Figure 10 is the schematic diagram for the scattering film layer for showing the total reflection screen according to the utility model embodiment.
Figure 11 shows the scatter distributions of total reflection screen and the emulation of screen gain according to the utility model embodiment
Analog result.
Figure 12 shows the scatter distributions of total reflection screen and the emulation of screen gain according to the utility model embodiment
Analog result.
Figure 13 shows the scatter distributions of total reflection screen and imitating for screen gain according to embodiment of the present utility model
True analog result.
Figure 14 shows the analogue simulation knot of the optical contrast of the total reflection screen according to the utility model embodiment
Fruit.
Embodiment
Described in detail next, with reference to accompanying drawing according to each specific embodiment of the present utility model.It is it is emphasized that attached
All sizes in figure are only illustrative and are not necessarily according to actual proportions diagram, thus without limited.Example
Such as, it should be understood that, it is illustrated that total reflection screen sandwich construction in each layer thickness and thickness proportion be not according to reality
What the size and ratio on border exemplified, merely to diagram is convenient.
First, it is totally reflected optical projection system general introduction
Fig. 3 is the structural representation for showing the optical projection system according to the utility model embodiment.As shown in Figure 3, throw
Shadow system includes total reflection screen 10 and projector 20.Being totally reflected screen 10 includes the light incident side of the projection ray from projector
Stack gradually surface micro-structure layer 14, body diffused layer 13, total reflection layer 12 and the light absorbing layer 11 of arrangement.From projector 20
Projection ray be incident to total reflection layer 12 through surface micro-structure layer 14, body diffused layer 13.Hereinafter, also will total reflection
The light incident side of the projection ray of screen 10 is referred to as the outside (that is, towards viewer) of screen, and light absorbing layer side is referred to as into screen
Inner side (that is, backwards to viewer).Total reflection layer 12 is formed with microstructure unit array.Each microstructure unit includes two
Individual clinoplain.The angle of inclination of the two clinoplains is by accurate design so that the projection incident from the lower section of screen 10
Light is totally reflected in two inclined planes, is finally reflected onto in the field range of beholder, and comes from screen 10
The environment veiling glare of top can not meet the condition being totally reflected in two inclined planes, through total reflection layer 12 by light
Absorbed layer 11 absorbs.Namely at least partly transmissive totally reflected ambient light is absorbed by light absorbing layer.Wherein, the light
Absorbed layer 11 is, for example, black.
As shown in figure 4, the microstructure unit of total reflection layer 12 has the array arrangement knot of rotational symmetry in screen plane
Structure.Pivot (optical centre) the axis normal to screen plane of the array arrangement structure of the rotational symmetry and it is located at screen
Lower section.Preferably, projector 20 is arranged in the center of rotation axis.
Body diffused layer 13 and surface micro-structure layer 14 have been orderly arranged outside each in total reflection layer 12.The He of body diffused layer 13
Surface micro-structure layer 14 may be collectively referred to as light diffusion layer, be used to the collimated light beam that diffusion reflects from total reflection layer 12, so that
Total reflection screen 10 has bigger visible angle.Although it should be appreciated that illustrated in Fig. 3 while be provided with body diffused layer 13
With the example of surface micro-structure layer 14, but be totally reflected screen 10 can be provided only with body diffused layer 13 or surface micro-structure layer
14.Protective layer is set to prevent scratch or chemical attack in addition, can also be added in the outside of surface micro-structure layer 14.When
So, other auxiliary functional layers can also be set according to the design needs.
Fig. 5 shows the microstructure unit of the total reflection layer 12 of the total reflection screen according to the utility model embodiment
Cross section structure schematic diagram.Shown in institute Fig. 5, total reflection layer 12 includes transparent base 120, microstructured layers 121 and la m 122.Thoroughly
Bright base material 120 be located at total reflection layer 12 near light diffusion layer side and contacted with light diffusion layer, wherein the transparent base
120 including PET, PC or PMMA etc. transparent material.Microstructured layers 121 are arranged on being contacted with light diffusion layer for transparent base 120
Side opposite side.Wherein, the microstructured layers 121 use resin material, the resin be usually epoxide-resin glue system,
SGA system, polyester adhesive system, polyurethane adhesive system or polyimides glue system etc..Transparent base 120 and microstructured layers 121 are logical
Cross UV coating apparatus or thermal forming device forms one.La m 122 forms the close light absorbing layer in microstructured layers 121
Side, and be in contact with light absorbing layer 11.The refractive index of the material of formation la m 122, which is less than, forms microstructured layers 121
The refractive index of material.The microstructured layers 121 surface adjacent with la m 122 is provided with multiple microstructure units.Wherein,
In each microstructure unit of total reflection layer 12, microstructured layers 121 are formed total reflection prism and inclined with two
Oblique intersection surface 124 and 125.In other words, in each microstructure unit of total reflection layer 12, microstructured layers 121 are
The prism of the row's rotational symmetry formed on the surface of transparent base 120, intersection surface 124 and 125 are microstructured layers 121
From the interface between la m 122 both different material layers, wherein microstructured layers 121 are first material layer, the inner side
Layer 122 is second material layer.For example, such prism is added by using to coating resin and UV solidifications or heat curing process
What work formed.It is clear in order to illustrate in Fig. 5, it illustrate only two microstructure units.Projector below screen enters
Penetrate light 123 to go out to occur once to be totally reflected respectively in two inclined surfaces 124 and 125, finally reflex to the eyes side of beholder
To.Environment veiling glare 127 mostlys come from the ceiling light in room.In most cases, micro-structural list of the ceiling light away from screen
The rotation axis of the rotational symmetry structure of member and the incidence angle of environment veiling glare 127 are much smaller than the incident angle of projection ray.Cause
This, environment veiling glare 127 can not meet the condition being totally reflected on surface 124 and surface 125, and the overwhelming majority has passed through micro-
Construction unit is absorbed by light absorbing layer 11.Because light absorbing layer 11 is integrally provided at the inner side of total reflection layer 12, so manufacture
Technique is simple, and projection ray will not be caused to lose.
As described above, the angle of total reflection layer 12 make use of to select according to the total reflection screen 10 of the utility model embodiment
Select sexual reflex characteristic so that screen can automatic distinguishing projection ray and ambient light, and for absorbing the light of environment veiling glare
Absorbed layer 11 is integrally provided at the inner side of total reflection layer 12, it is achieved thereby that high-contrast, the optical characteristics of high-gain, together
When simplify processing technology, reduce cost, improve yield rate.
2nd, the optical principle and angle Selection of microstructure unit are totally reflected
The optics that Fig. 6 illustrates the total reflection microstructure unit of the total reflection screen according to the utility model embodiment is former
Reason.As shown in fig. 6, the refractive index of microstructured layers 121 is n1Refractive index with la m 122 is n2, two of microstructure unit
Inclined-plane and the angle of screen plane (that is, vertical direction) are respectively θ1And θ2(unit is degree, similarly hereinafter).Incident ray and reflected light
Line and the angle of vertical direction are respectively α and β (unit is degree, similarly hereinafter).Wherein, when reflection light horizontal exit, β is obvious
For 0 degree, and set：When reflection light (that is, is inclined to ground) below horizontal line, β is negative value, when reflection light is in level
When more than line (that is, be inclined to ceiling) β be on the occasion of.In order that the incident ray from projector 20 is sent out in two inclined planes
It is emitted after raw total reflection twice towards the eyes direction of beholder, according to geometric optical theory and optical total-reflection condition, it is necessary to
Meet formula below (1)~(3)：
θ can not be determined completely based on above-mentioned formula (1)~(3)1And θ2Value, also leave certain design freedom.
Assuming that the angle of the intermediate rays and screen plane (that is, vertical direction) between incident ray and emergent ray is γ, and set
It is during settled intermediate rays deviation viewer sideFor on the occasion of, when intermediate rays be inclined to viewer side when beFor negative value.Then according to several
What optical principle and optical total-reflection condition can calculate：
From formula (4) and (5), as long as the light path of incident ray, emergent ray and intermediate rays is determined (i.e., really
Determine α, β and γ), it is possible to the tilt angle theta of two intersecting planes of micro-structural is determined completely1And θ2。
In addition, also known by formula (4) and (5), even if determine incident ray, emergent ray light path situation
Under, can also be according to according to different application demands, by adjusting the light path (that is, the value for adjusting γ) of intermediate rays one
Determine in scope to θ1And θ2Value selected.For example, in the application of ultrashort out-of-focus projection, projector is located under screen
Side, so α>0 always sets up；And the eyes of spectators are located at the top of projector, in order to ensure that emergent ray is incident to spectators
Eyes, so alpha+beta>0 also always sets up；In the case, can be obtained by formula (1)：
θ1+θ2＜ 90 (6)
From formula (4), in the application of ultrashort out-of-focus projection, according to micro- knot of total reflection screen of the present utility model
Angle between two inclined planes 124 and 125 of structure unit is necessary for obtuse angle.
A kind of preferably light path situation is shown in Fig. 7 a, wherein, incident projection ray Vin passes through micro-structural list
Intermediate rays Vmid after the total reflection on one inclined-plane of member is in microstructured layers 121 along the direction parallel with screen plane
Advance, Vmid turns into towards beholder direction horizontal exit after the total reflection on another inclined-plane of microstructure unit
Emergent ray Vout.
In the case of shown in Fig. 7 a, now, γ=0 degree, β=0 degree, work as θ2=45 degree, emergent ray along with
The outgoing of screen vertical is β=0 degree, then understands θ according to above-mentioned formula (6)1<45 degree, namely θ1<θ2。
But in actual applications, it is also possible to such as Fig. 7 b and c be present and show nonideal light path situation.In Fig. 7 b
In, incident ray Vin generates intermediate rays Vmid, but Vmid row after the total reflection on the first inclined-plane of microstructure unit
Enter direction and be not parallel to screen plane, but be partial to beholder side (now γ be on the occasion of).Therefore, part Vmid may
It is not emitted directly by the second slant reflection, the first inclined-plane of microstructure unit can not be made full use of.It is incident in Fig. 7 c
Light Vin generates intermediate rays Vmid after the total reflection on the first inclined-plane of microstructure unit, but Vmid direct of travel is not
Parallel to screen plane, but it is partial to backwards to the side of beholder (now γ is negative value).Therefore, it is impossible to make full use of micro-
Second inclined-plane of construction unit.
In addition, as described above, rotational symmetry structure is had according to total reflection screen 10 of the present utility model, and comprising more
Individual microstructure unit.Therefore, the angle design of each microstructure unit can be same or different.For example, Fig. 8 is illustrated
According to the simulative example of the optical angle of the microstructure unit of total reflection screen of the present utility model.It is complete shown in Fig. 8 a
The focus of reflective viewing screen is located at infinite point, in other words, in all microstructure units of total reflection screen, emergent ray
The flatly direction of directive beholder, so β=0 degree and θ2=45 degree are set up always.It can be seen from analog result, micro- knot
The θ of structure unit1It is gradually reduced with the top of close screen, and θ1<θ2, thus meet above-mentioned formula (4).In Fig. 8 b institutes
In the total reflection screen shown, the focus for being totally reflected screen is no longer at infinite point.In the case, along from screen
The heart is totally reflected the θ of the microstructure unit of screen to the direction of screen edge1Value constantly reduce and θ2Value constantly increase
Greatly.
3rd, it is totally reflected the refractive index selection of microstructure unit
Except θ1And θ2Value outside, from optical total-reflection formula, meet the micro- knot of total reflection being totally reflected twice
Structure unit is also by the refractive index n of microstructured layers 1211With the refractive index n of la m 1222Influence.According to of the present utility model
The microstructured layers 121 for being totally reflected screen are typically scope of its refractive index 1.3~1.7 made of transparent resin material
It is interior.Or microstructured layers 121 can also use the other materials with similar refractive index to be made.Furthermore it is also possible to it is being made
Scattered ion(s) or absorbing material etc. are adulterated in the material of microstructured layers 121.Thus, in order to meet total reflection condition, it is necessary to
Consider the refractive index n of la m 1222Selection.Fig. 9 shows the different refractivity n of la m 1222For microstructure unit
Incident ray total reflection region influence.As shown in Fig. 9 a, incident ray V can be expressed as (Vx,Vy,Vz), wherein z
Axle normal to screen, and X, Y-axis is parallel to screen.Obviously, the total reflection region of incident ray depends on VxAnd VyValue model
Enclose.VzMeet：
It is assumed that emergent ray is towards the eyes of beholder and the refractive index n of microstructured layers 1211For 1.6, according to above-mentioned public affairs
Formula (2) and (3) can obtain the component (V for the incident ray for meeting total reflection conditionx,Vy) span with la m 122
Refractive index n2Variation tendency.As shown in Fig. 9 b, with n2Increase, meet to send out on two inclined-planes of microstructure unit
Constantly reduce in the region of the incident ray of raw total reflection.In other words, with n2Increase, the light sent from projector can not
The probability increase being totally reflected twice occurs on two inclined-planes of microstructure unit.Therefore, in order to ensure certain screen reflection effect
Rate is, it is necessary to make n1And n2Meet：
n2<n1-0.2 (6)
It should be appreciated that in the case where meeting above-mentioned condition, la m 122 can be air layer.In the case, it is micro-
The tip on two inclined-planes of structure sheaf 121 is directly bonded to light absorbing layer 11.
4th, the selection of light diffusion layer
As described above, projection ray after the reflection of total reflection layer 12, the general all very littles of the angle of divergence of emergent ray, is
The visual range of increase projected picture, light diffusion layer can be set in the outside of total reflection layer 12.In the example shown in Fig. 3
In, total reflection layer 12 be orderly arranged outside each body diffused layer 13 and surface micro-structure layer 14 is used as light diffusion layer.However,
One layer of light diffusion layer can be provided only with or be not provided with light diffusion layer.Figure 10 a~c respectively illustrates 3 kinds and may be used as light
The commercialization optical scattering membrane structure of diffusion layer：Volume scattering film, irregular surface scattering film and regular surfaces lenticule
Array film.This several scattering thin-film material may serve to increase the visual range of screen, and can be independent as needed
Using or stacking use.For example, figure can be formed using volume scattering film and regular surfaces microlens array film by superposition
Body diffused layer 13 and surface micro-structure layer 14 in 3.The value volume and range of product not limited to this of stacking.
In the case where using optical scattering film as light diffusion layer, total reflection layer and light diffusion layer is first respectively prepared,
Then it is bonded by optics attaching process.Alternately, two to same substrate carrier (for example, PET) can also be passed through
Individual surface is processed, and forms light scattering layer and total reflection layer respectively.
5th, it is totally reflected the simulation result of the performance of screen
Figure 11 to Figure 13 respectively illustrates the scatter distributions and screen of the total reflection screen according to embodiment of the present utility model
The simulation results of curtain gain.
Figure 11 illustrate use 15 degree Gauss scatter film as light diffusion layer in the case of be totally reflected screen to throwing
The analogue simulation of the reflection of the light of shadow machine.Figure 11 a shows distribution of the projection ray of screen reflection in full filed,
Figure 11 b shows the screen gain of total reflection screen.From Figure 11 a, most of light from projector is all concentrated
In the circular available field of view region close to screen center；Fraction light is reflected because of the Fresnel reflection of screen surface
To the direction of ceiling.From Figure 11 b, in the case of 20 degree of gain angles, it is possible to achieve the water of peak gain 5.5
It is flat.Figure 12 illustrate use 15 degree Gauss scatter film as light diffusion layer in the case of total reflection screen to ambient light
The analogue simulation of the reflection of line.Simulation result show most of ambient light pass through total reflection layer after by the light absorbing layer of black
Absorb, only fraction ambient light is reflected onto the direction on ground because of the Fresnel reflection of screen surface.Thus, only
Extremely least a portion of ambient light can be entered in the available field of view of beholder, therefore the contrast of projected picture will not be caused
Influence.
In the application scenarios of reality, the horizontal view angle that spectators watch screen is more than vertical angle of view.Therefore using oval high
The scattering film of this scatter distributions can effectively increase the horizontal dispersion distribution of the reflected beams as light diffusion layer, so as to increase
The utilization rate of reflected light is added.Figure 13 simulation result shows that the screen of film is scattered using the Gaussian Profile of ellipse to incite somebody to action
The horizontal view angle of screen is expanded to 35~40 degree, and vertical angle of view, in the range of 20 degree, the peak value of gain still can be up to
More than 3~5.
Figure 14 shows the simulation results of the contrast to being carried out according to total reflection screen of the present utility model.Such as
Shown in Figure 14 a, total reflection screen is divided into some regions, and in the projector below screen and above screen
Illumination identical of the parlor ceiling light on screen in the case of test the contrasts of wherein 9 points.As shown in Figure 14 b, emulation
As a result the average value displayed contrast can be higher than 60, considerably beyond the level of projection screen in the market.In reality
In the case of the use of border, the illumination of the projection ray of projector on screen can be more than the illumination of ambient light.Thus, with throwing
The increase of the illumination of shadow light, can also further increase relative to the contrast of ambient light, can meet completely family projection and
Demand of the commercial projection to projected picture contrast.
Although above with reference to the accompanying drawings of according to luminaire of the present utility model, the utility model
Not limited to this, and it will be understood by those skilled in the art that in the essence limited without departing from the utility model following claims or
In the case of scope, various changes, combination, secondary combination and modification can be made.
Claims (12)
1. one kind total reflection screen, in its field range that projection ray from projector can be reflexed into beholder, its
It is characterised by,
The light diffusion layer, total reflection layer and light that the total reflection screen includes being sequentially arranged from the light incident side of the projection ray are inhaled
Layer is received, the light absorbing layer can absorb the light of incidence, and the light diffusion layer is used for the angle of divergence for increasing the light of outgoing,
The total reflection layer is comprised at least positioned at the microstructured layers of the light diffusion layer side and in the light absorbing layer side
Side layer, the refractive index of the microstructured layers are more than the refractive index of the la m, multiple micro- knots are provided with the microstructured layers
Structure unit, multiple microstructure units continuous extension and rotational symmetry in the plane of the total reflection screen,
Wherein, two intersecting planes that each microstructure unit includes are provided so that the projection ray continuously described two
It is totally reflected at individual intersecting plane,
At least partly transmissive totally reflected ambient light is absorbed by the light absorbing layer.
2. total reflection screen according to claim 1, it is characterised in that the total reflection layer also includes transparent substrate layer,
The microstructure unit solidifies in the transparent substrate layer by coating resin, and by UV solidifications or thermoforming mode.
3. total reflection screen according to claim 2, it is characterised in that the microstructured layers are arranged to the complete of rotational symmetry
Reflecting prism, described two intersecting planes and the angle of the plane of the total reflection screen are respectively θ1And θ2, and θ1And θ2Meet
Relation：θ1+θ2＜ 90.
4. total reflection screen according to claim 3, it is characterised in that in multiple microstructure units, each θ1
With different angles and each θ2It is equal to 45 degree.
5. total reflection screen according to claim 3, it is characterised in that in multiple microstructure units, each θ1
With different angles, and each θ2Also there is different angles.
6. total reflection screen according to claim 1, it is characterised in that the refractive index n of the microstructured layers1With it is described interior
The refractive index n of side layer2Meet relation：n2<n1-0.2。
7. total reflection screen according to any one of claim 1 to 6, it is characterised in that the light diffusion layer is by body
Scatter film, irregular surface scattering one of film and regular surfaces microlens array film are formed；Or
The light diffusion layer is thin by being laminated volume scattering film, irregular surface scattering film and regular surfaces microlens array
At least one of film and formed.
8. total reflection screen according to any one of claim 1 to 6, it is characterised in that the la m is air layer.
9. total reflection screen according to any one of claim 1 to 6, it is characterised in that described two intersecting plane quilts
It is arranged so that the projection ray after occurring to be totally reflected for the first time along parallel with the plane of the total reflection screen
Advance in direction.
10. total reflection screen according to any one of claim 1 to 6, it is characterised in that rotational symmetry it is multiple described
The center of rotation axis of microstructure unit is perpendicular to the plane for being totally reflected screen and positioned at the lower section of the total reflection screen.
11. a kind of optical projection system, the system includes the total reflection screen and institute as any one of claim 1 to 10
State projector.
12. optical projection system as claimed in claim 11, it is characterised in that the projector is under the total reflection screen
The ultra short focal projector of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970696.XU CN207216263U (en) | 2017-08-04 | 2017-08-04 | It is totally reflected screen and optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970696.XU CN207216263U (en) | 2017-08-04 | 2017-08-04 | It is totally reflected screen and optical projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207216263U true CN207216263U (en) | 2018-04-10 |
Family
ID=61817863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720970696.XU Active CN207216263U (en) | 2017-08-04 | 2017-08-04 | It is totally reflected screen and optical projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207216263U (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983542A (en) * | 2018-08-15 | 2018-12-11 | 青岛海信激光显示股份有限公司 | Reflective projection screen, transmissive projection screen and optical projection system |
| CN109215542A (en) * | 2018-08-15 | 2019-01-15 | 友达光电股份有限公司 | Situational projection system and control method thereof |
| CN109308843A (en) * | 2018-10-11 | 2019-02-05 | 中国建筑材料科学研究总院有限公司 | Transparent display screen and preparation method and vehicle-mounted transparent head-up-display system |
| CN109375467A (en) * | 2018-12-05 | 2019-02-22 | 张家港康得新光电材料有限公司 | Ultrashort out-of-focus projection's curtain |
| CN109388015A (en) * | 2017-08-04 | 2019-02-26 | 深圳光峰科技股份有限公司 | It is totally reflected screen and optical projection system |
| WO2019114121A1 (en) * | 2017-12-14 | 2019-06-20 | 深圳光峰科技股份有限公司 | Screen and method for fabricating light-absorption film |
| CN110297385A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| WO2019227935A1 (en) * | 2018-05-31 | 2019-12-05 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN110865509A (en) * | 2018-08-27 | 2020-03-06 | 深圳光峰科技股份有限公司 | Projection screen and manufacturing method thereof |
| CN110908234A (en) * | 2018-08-28 | 2020-03-24 | 深圳光峰科技股份有限公司 | Curing adhesive and projection screen thereof |
| WO2020063706A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN110955106A (en) * | 2018-09-27 | 2020-04-03 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN111077722A (en) * | 2018-10-18 | 2020-04-28 | 深圳光峰科技股份有限公司 | Projection screen and processing method thereof |
| WO2020093805A1 (en) * | 2018-11-05 | 2020-05-14 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN111273512A (en) * | 2018-12-04 | 2020-06-12 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN112255876A (en) * | 2020-11-10 | 2021-01-22 | 成都菲斯特科技有限公司 | Total reflection type lateral projection screen and projection system |
| TWI719724B (en) * | 2019-11-21 | 2021-02-21 | 弘勝光電股份有限公司 | Anti-light projection screen with telephoto structure |
| CN112824970A (en) * | 2019-11-05 | 2021-05-21 | 深圳光峰科技股份有限公司 | Direct projection screen |
-
2017
- 2017-08-04 CN CN201720970696.XU patent/CN207216263U/en active Active
Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109388015B (en) * | 2017-08-04 | 2024-05-17 | 深圳光峰科技股份有限公司 | Total reflection screen and projection system |
| CN109388015A (en) * | 2017-08-04 | 2019-02-26 | 深圳光峰科技股份有限公司 | It is totally reflected screen and optical projection system |
| WO2019114121A1 (en) * | 2017-12-14 | 2019-06-20 | 深圳光峰科技股份有限公司 | Screen and method for fabricating light-absorption film |
| CN110297385A (en) * | 2018-03-22 | 2019-10-01 | 深圳光峰科技股份有限公司 | Screen and optical projection system |
| US11448952B2 (en) | 2018-03-22 | 2022-09-20 | Appotronics Corporation Limited | Screen and projection system |
| US11143947B2 (en) | 2018-03-22 | 2021-10-12 | Appotronics Corporation Limited | Screen and projection system |
| EP3805860A4 (en) * | 2018-05-31 | 2022-03-16 | Appotronics Corporation Limited | Projection screen and projection system |
| CN110554557A (en) * | 2018-05-31 | 2019-12-10 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| US11194243B2 (en) | 2018-05-31 | 2021-12-07 | Appotronics Corporation Limited | Projection screen and projection system |
| CN110554557B (en) * | 2018-05-31 | 2021-10-22 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| KR102473882B1 (en) * | 2018-05-31 | 2022-12-02 | 아포트로닉스 코포레이션 리미티드 | Projection Screens and Projection Systems |
| WO2019227935A1 (en) * | 2018-05-31 | 2019-12-05 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| KR20210010934A (en) * | 2018-05-31 | 2021-01-28 | 아포트로닉스 코포레이션 리미티드 | Projection screen and projection system |
| CN108983542A (en) * | 2018-08-15 | 2018-12-11 | 青岛海信激光显示股份有限公司 | Reflective projection screen, transmissive projection screen and optical projection system |
| CN109215542A (en) * | 2018-08-15 | 2019-01-15 | 友达光电股份有限公司 | Situational projection system and control method thereof |
| CN110865509A (en) * | 2018-08-27 | 2020-03-06 | 深圳光峰科技股份有限公司 | Projection screen and manufacturing method thereof |
| CN110865509B (en) * | 2018-08-27 | 2022-01-04 | 深圳光峰科技股份有限公司 | Projection screen and manufacturing method thereof |
| CN110908234B (en) * | 2018-08-28 | 2022-08-02 | 深圳光峰科技股份有限公司 | Curing adhesive and projection screen thereof |
| CN110908234A (en) * | 2018-08-28 | 2020-03-24 | 深圳光峰科技股份有限公司 | Curing adhesive and projection screen thereof |
| US11921413B2 (en) | 2018-09-27 | 2024-03-05 | Appotronics Corporation Limited | Projection screen and projection system |
| CN110955106A (en) * | 2018-09-27 | 2020-04-03 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| US20210341827A1 (en) * | 2018-09-27 | 2021-11-04 | Appotronics Corporation Limited | Projection screen and projection system |
| CN110967914A (en) * | 2018-09-30 | 2020-04-07 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN110967914B (en) * | 2018-09-30 | 2021-10-22 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| WO2020063706A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN109308843A (en) * | 2018-10-11 | 2019-02-05 | 中国建筑材料科学研究总院有限公司 | Transparent display screen and preparation method and vehicle-mounted transparent head-up-display system |
| CN111077722B (en) * | 2018-10-18 | 2022-03-25 | 深圳光峰科技股份有限公司 | Projection screen and processing method thereof |
| US11906891B2 (en) | 2018-10-18 | 2024-02-20 | Appotronics Corporation Limited | Projection screen and processing method therefor |
| CN111077722A (en) * | 2018-10-18 | 2020-04-28 | 深圳光峰科技股份有限公司 | Projection screen and processing method thereof |
| US11762275B2 (en) | 2018-11-05 | 2023-09-19 | Appotronics Corporation Limited | Projection screen and projection system |
| WO2020093805A1 (en) * | 2018-11-05 | 2020-05-14 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN111273512A (en) * | 2018-12-04 | 2020-06-12 | 深圳光峰科技股份有限公司 | Projection screen and projection system |
| CN109375467A (en) * | 2018-12-05 | 2019-02-22 | 张家港康得新光电材料有限公司 | Ultrashort out-of-focus projection's curtain |
| CN112824970A (en) * | 2019-11-05 | 2021-05-21 | 深圳光峰科技股份有限公司 | Direct projection screen |
| CN112824970B (en) * | 2019-11-05 | 2024-04-05 | 深圳光峰科技股份有限公司 | Direct projection screen |
| TWI719724B (en) * | 2019-11-21 | 2021-02-21 | 弘勝光電股份有限公司 | Anti-light projection screen with telephoto structure |
| CN112255876A (en) * | 2020-11-10 | 2021-01-22 | 成都菲斯特科技有限公司 | Total reflection type lateral projection screen and projection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207216263U (en) | It is totally reflected screen and optical projection system | |
| CN109388015A (en) | It is totally reflected screen and optical projection system | |
| US11448952B2 (en) | Screen and projection system | |
| CN109388013A (en) | Projection screen and optical projection system | |
| CN109976081A (en) | The preparation method of screen and extinction film | |
| US11300869B2 (en) | Screen and projection system | |
| US11740545B2 (en) | Curved screen and method of arranging microstructure therein, and projection system | |
| WO2021004301A1 (en) | Projection screen | |
| US11194243B2 (en) | Projection screen and projection system | |
| CN109388012B (en) | Projection screen and projection system | |
| WO2019179124A1 (en) | Screen and projection system | |
| US11762275B2 (en) | Projection screen and projection system | |
| CN109388014B (en) | Projection screen and projection system | |
| WO2021004303A1 (en) | Projection screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 20-22, 20-22 headquarters building, 63 high tech Zone, Xuefu Road, Nanshan District, Guangdong Province, Guangdong. Patentee after: APPOTRONICS Corp.,Ltd. Address before: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee before: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address after: 518000 Nanshan District, Shenzhen, Guangdong, Guangdong Province, Guangdong Road, 63 Xuefu Road, high-tech zone, 21 headquarters building, 22 floor. Patentee after: SHENZHEN GUANGFENG TECHNOLOGY Co.,Ltd. Address before: 518055 Guangdong province Shenzhen Nanshan District Xili town south of Cha Guang road Shenzhen integrated circuit design application Industrial Park 401 Patentee before: APPOTRONICS Corp.,Ltd. |