CN109752883A - Consecutive variations axis polaroid and the forming method for postponing piece - Google Patents
Consecutive variations axis polaroid and the forming method for postponing piece Download PDFInfo
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- CN109752883A CN109752883A CN201811079500.3A CN201811079500A CN109752883A CN 109752883 A CN109752883 A CN 109752883A CN 201811079500 A CN201811079500 A CN 201811079500A CN 109752883 A CN109752883 A CN 109752883A
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Abstract
The invention discloses the forming methods of a kind of consecutive variations axis polaroid for Mechanical course variable transmittance window and delay piece, the wherein method for making the light redirecting layer of the differently- oriented directivity with consecutive variations, method on substrate the following steps are included: coat light orientation material；The substrate is placed on linear shifter；It is exposed under light source with by the side coated with light orientation material of substrate, the light that wherein light source issues passes through polaroid and is irradiated on the light orientation material coated on substrate, has figuratum light redirecting layer to be formed on light orientation material.
Description
Technical field
The present invention relates to Mechanical course variable transmittance windows, more particularly, to a kind of consecutive variations axial direction polarizer
With retardation plate and its manufacturing method.
Background technique
Window is the element of building and vehicle.Traditionally, the light transmittance of window passes through curtain or shutter
To control.These devices realize control by stopping all or part of incident light, and unrelated with the structure of window.Smart window
Family can control light transmittance by embedding structure.These intelligent windows can also be further divided into two types: electrical type and machine
Tool class.Electrical type needs electric energy to carry out work, and without any Mechanical Moving component, such as electrochromism (EC) window and polymerization
Object dispersed LCD (PDLC) window.Mechanical intelligent glass requires no power to operate, but they include indispensable component
Relative movement.
A kind of mechanical variable-transmissivity equipment is disclosed in United States Patent (USP) US0163062A1, which has multiple layers,
Wherein each layer includes light blocking and transmission region.This equipment continuously can change light transmission by changing total light
Degree.As shown in Figure 1A, in this embodiment with the layer of checkerboard pattern.One mobile control light in these layers
Overlapping, to control total light transmittance (as shown in figs. ib and 1 c).This equipment can control light transmittance from about 50%
To about 0%.
But the major defect of this structure is its irremovable fixed light, in this way, at least half of window
The family visual field is blocked.With the reduction of light transmittance, field range also reduces simultaneously.
It not comprising any polarizing materials in above-mentioned setting, and include polarisation in variable-transmissivity equipment below
Material.
Polaroid is polarizing appliance, and the light with the electric field only vibrated in a plane of polarization is allowed to pass through.Many institutes
It is well known that variable optical attenuator can be constructed by using two linear polarizer plates.When one of polaroid is relative to another
When one polaroid rotation, light transmittance meeting consecutive variations, such as Malus' law.
L=locos2θ (1)
Wherein, θ is the angle between the transmission axis of two polaroids.I0For the luminous intensity of two parallel polaroids.
When two polaroids are aligned and their transmission axis is parallel, light transmittance is maximum, and when their transmission axis that
Light transmittance is minimum (it is desirable that being 0) when this is orthogonal.When two axis are in other angles, light transmittance is such as schemed according to angle change
Shown in 2A, 2B and 2C.
Obviously, if window is made of two polarized glass, it can be variable light transmittance window.Main problem is window
What family was not usually round.In most cases, window rotation is all unpractiaca.
The variable light transmittance equipment using polarizing materials is disclosed in United States Patent (USP) US0163062.The equipment includes two
A layer.Substitute two regions that entire layer has polarization direction orthogonal along a polarization direction, the equipment.Simple design side
Case is alternating horizontal band and vertical band polarisation region.Moving in rotation is substituted, it can be mobile by the relative translation of two layers
It controls light transmittance (as shown in Fig. 3 A, 3B and 3C).
A variety of two domains channel type with different orthogonal pattern of polarization is disclosed in United States Patent (USP) US5164856.In addition to
Type of strip, there are also waveform, V-arrangement and cheeses.
The common issue of these two domains polarization-types variation light transmittance equipment is the presence of overlapping light.In non-polarized type
In, these regions work in an identical manner with light.Overlapping light has covered light, they also hamper the visual field
Visibility.For type of strip, it can be seen that apparent black bands (Fig. 3 B).
Ideal variable-transmissivity window should be in entire window area optical transmission levels having the same, and the light transmission water
It is flat continuously to be changed by the minute movement between window layer.
In the U.S. of entitled " the multiple light-transmission degree device comprising relatively moveable polarization elements " of nineteen fifty-two application
In patent US2617329, the polarizing layer with " curve polarization direction " is disclosed.Plane of polarisation in a manner of periodicity and gradual change by
Gradual change (Fig. 4).Two panes move relative to each other, to generate the polarisation density of consecutive variations on entire window.It is similar
Structure discloses in United States Patent (USP) US6414790B1, US7162136B1 and US9562388B2.
The polarisation axle construction elementary solutions of these consecutive variations has been determined since the black bands of the two domain structures generation of separation are asked
Topic.
In practice, " continuous " variation plane of polarisation can be divided into small and rule orientating direction change multiple areas
Domain (as shown in Figure 5).
In principle, two consecutive variations polarizing axis layers can construct the continuous change for capableing of small translational motion relative to one another
The light transmittance window of change.Following patent is method relevant to this structure is realized.
Refer to that " these different polarization band majorities pass through along desired direct line in United States Patent (USP) US2617329
Rub clean glass plate and coat dichroic coating production ".
Disclose that " light polarization molecule is the shearing force by applying during coating in United States Patent (USP) US6414790B1
The dye molecule being orientated during lysotropic liquid crystal phase ".
The method of the transparent window pane of the pattern with a variety of polarization axles, base are disclosed in United States Patent (USP) US9562388B2
This includes step 1.Brush rotating transparent pane 2.From the mobile moveable mask 3 in the surface of transparent window pane.In swiped through plate surface
Polarizing material is plated, to generate the pattern of polarization for matching the pattern brushed out substantially.
The absorption axiss orientation wiregrating polaroid for manufacturing consecutive variations is also disclosed in United States Patent (USP) US8310757B2
Process.The process is first by pattern die into plastic, transparent substrate.Then with spinning mask by next figuratum modeling
Flitch covers into strips.When mask rotation, spray deposition techniques are coated on ridge.
However, having the window of variation light transmittance can also be by using fixing axle polaroid and embedded pattern therebetween
Wave delayer be made.
The change of wave delayer thickness is equally described with fixed polaroid and changed in United States Patent (USP) US8310757B2
The light transmittance window of change.
The light transmittance window arrangement of variation is disclosed in United States Patent (USP) US8508681B2, which includes with multiple
The wave delayer in domain and the optical axis gradually changed.Disclose the method for manufacturing the optical axis wave delayer of the variation.
Method 1: delayer is cut into band, is then overlayed with different orientations.
Method 2: by using exposure mask friction.
Method 3: the surface alignment of linear photopolymer (LPP) is patterned by photo, then deposits liquid crystal polymer.
In addition to changing retardation axis orientation, the change of delay Level Change and birefringence value is also disclosed.
To sum up, the prior art still has following problem to be solved:
1. the full window visual field is obstructed for having the design of fixed light blocking and transmission region.
2. there are black bands for having the design there are two cross-polarization domain.
3. glass polishing method used at present lacks effect for the polaroid shaft design of variation.
Summary of the invention
In order to solve the above technical problems, one aspect of the present invention is proposed and a kind of being taken for making with consecutive variations
To the method for the light redirecting layer in direction, method the following steps are included:
Light orientation material is coated on substrate；
It places the substrates on linear shifter；With
The side coated with light orientation material of substrate is exposed under light source, the light that wherein light source issues passes through polarisation
Piece is irradiated on the light orientation material coated on substrate, has figuratum light redirecting layer to be formed on light orientation material.
In one embodiment, substrate is transparent glass or plastic plate.
In one embodiment, substrate has web-like shape.
In one embodiment, plane internal rotation of the polaroid where being parallel to substrate, so that incident exposure light has
There is the polarization direction of consecutive variations.
In one embodiment, when polaroid rotates 180 degree, the mobile distance of substrate is a pitch of predetermined length
(P)。
In one embodiment, barrier sheet of the setting with slit between light source and substrate, and the length side of slit
To vertical with the moving direction of substrate.
In one embodiment, the movement speed (v) of substrate, the width of slit, predetermined pitch (P) and substrate exposure
Amount, the quantity of illumination have following relationship:
In one embodiment, slit is located above or below polaroid.
In one embodiment, polaroid is linear polarizer plate, and the company of being provided between linear polarizer plate and substrate
Continuous axis changes half-wave retardation piece, so that the light that light source issues is irradiated to base after sequentially passing through linear polarizer plate and half-wave retardation piece
Piece.
In one embodiment, polaroid is linear polarizer plate, and is set gradually between linear polarizer plate and substrate
Planar alignment wedge shape liquid crystal cells and quarter-wave plate, so that the light that light source issues sequentially passes through planar alignment wedge shape liquid crystal
Substrate is irradiated to after unit and quarter-wave plate.
In one embodiment, polaroid is linear polarizer plate, and is set gradually between linear polarizer plate and substrate
Spatial light modulator, quarter-wave plate and projection lens, so that the light that light source issues sequentially passes through spatial light modulator, four
Substrate is irradiated to after/mono- wave plate and projection lens.
Another aspect of the present invention proposes a kind of method for manufacturing thin slice according to the light redirecting layer of above method manufacture,
Method the following steps are included:
Light orientation dichroic material is coated, on substrate to form light orientation dichroic layer；With
The patterned continuous axle of light orientation dichroic layer is changed into polarizing layer.
In one embodiment, substrate is transparent glass or plastics.
In one embodiment, in the top coating protective layer of continuous axle variation polarizing layer.
In one embodiment, light orientation dichroic layer includes identical or different light orientation molecule and dichroic molecules.
In one embodiment, light orientation dichroic layer is made of azo dyes.
In one embodiment, light orientation molecule and dichroic molecules pass through the solidification of the method for heating or illumination.
In one embodiment, dichroic light redirecting layer has multiple pitches (P).
Another aspect of the present invention proposes a kind of method for forming thin slice using above-mentioned light redirecting layer manufacturing method, shape
The method of flakiness the following steps are included:
Light orientation material is coated on substrate；
Light orientation patterns of material is turned into continuous axle variation oriented layer；With
In the top coating liquid material of patterned light redirecting layer to form functional layer, wherein functional layer is after solidification
Axis orientation it is identical as light redirecting layer.
In one embodiment, functional layer is reactive polymer or liquid crystal monomer.
In one embodiment, the liquid material for being used to form functional layer will not dissolve light redirecting layer.
In one embodiment, reactive polymer or liquid crystal monomer have smectic phase.
In one embodiment, reactive polymer or liquid crystal monomer are mixed with thermal initiator or photoinitiator, and respectively
Using heat treatment or light processing solidification to form light redirecting layer.
In one embodiment, reactive polymer or liquid crystal monomer are mixed with dichroic dye.
In one embodiment, the thickness of functional layer is corresponding to the predetermined delay value of axis change delay piece.
Another aspect of the present invention proposes a kind of thin slice manufactured using above-mentioned light redirecting layer manufacturing method, thin slice
Include:
Substrate；
Light redirecting layer, light redirecting layer are the light redirecting layer of the continuous change in orientation positioned at the side of substrate；With
Functional layer, functional layer are arranged on light redirecting layer.
Another aspect of the present invention proposes a kind of window of Mechanical course light transmittance, comprising:
Two glass plates disposed in parallel；
Be arranged in parallel between two glass plates two axis variation polaroid, or be arranged in parallel in two glass plates it
Between two fixing axle polaroids and two axis change delay pieces being arranged in parallel between two fixing axle polaroids；With
Controller, controller are connected to control two axis variation polaroid relative movements with two axis variation polaroids,
Or controller is connected respectively to control two axis change delay piece relative movements with two axis change delay pieces.
In one embodiment, two axis variation polaroids axis variation pitch having the same and axis direction of rotation.
In one embodiment, controller controls two axis variation polaroids and moves along the change direction of its polarizing axis.
In one embodiment, when two axis variation polaroids be moved to polarizing axis it is orthogonal when, the light transmittance of window
It is 0.
In one embodiment, two axis change delay pieces are half-wave retardation piece.
In one embodiment, the polarizing axis of the fixed polaroid of two axis is orthogonal.
In one embodiment, two axis fixed delay pieces axis variation pitch having the same and axis direction of rotation.
Polaroid and delay piece disclosed by the invention by manufacturing the differently- oriented directivity with consecutive variations, providing has company
The Mechanical course light transmittance window of the light transmittance of continuous variation, when use, will not lead to the problem of black bands on window, and full window regards
It is wild balanced.
Detailed description of the invention
Figure 1A is a part of the pane of the Chinese checkers plate pattern with transmission region and light.
Figure 1B, which is shown, reduces light transmittance by two Chinese checkers plate panes of overlapping.
The case where Fig. 1 C shows complete light blocking.
Fig. 2A is the case where being placed in parallel two polarizers, and wherein light transmittance is maximum.
Fig. 2 B is the case where placing two polarizers at an angle, and wherein light transmittance is lowered.
Fig. 2 C is the case where being disposed vertically two polarizers, and wherein light transmittance is minimum.
Fig. 3 A shows the structure of two regions polarization pane, including alternate parallel polarization area and vertical polarization area.
Fig. 3 B shows the black bands that cross-polarized light device is shown when two panes convert opposite to each other.
The case where Fig. 3 C is completely in black state.
Fig. 4 is that continuous axle changes oriented layer/polarizer/retardation plate.Every layer includes many repetition axis change in orientation periods
Pitch (P).
Fig. 5 is the axis change layer with multiple regions.There is illustrated the examples that a pitch has 18 regions, still
It can be bigger for the quantity of quasi-continuous layer region.Y-direction is the direction of axis change in orientation.
Fig. 6 is the equipment for manufacturing the light redirecting layer of continuous axle variation.
Fig. 7 is the equipment for manufacturing the consecutive variations light redirecting layer with duplication main controller.
Fig. 8 is flat liquid crystal wedge shaped element.
Fig. 9 is the equipment by the light redirecting layer of the manufacture continuous axle variation of flat liquid crystal wedge shaped element.
Figure 10 is the equipment for SLM projecting method.
Figure 11 A is the double-layer structure continuous axle variation polarisation for including the light orientation dichroic layer that basal layer and continuous axle change
Device.
Figure 11 B is the three-decker for changing polarizer and retardation plate for continuous axle.
Figure 12 A is to change the structure that axis polarizer changes light transmittance window by two.
Figure 12 B is to change the structure that axis retardation plate changes light transmittance window by two.
Specific embodiment
With reference to the accompanying drawings to Mechanical course variable transmittance window disclosed by the invention, consecutive variations axial direction polaroid and
Delay piece and forming method thereof elaborates.
Referring to Fig. 6, one aspect of the present invention discloses a kind of for making the light of the differently- oriented directivity with consecutive variations
The method of oriented layer, this approach includes the following steps.
Light orientation material is coated on substrate 50, it is preferable that substrate 50 can be transparent glass or plastic plate etc..Then,
Substrate 50 is placed on linear shifter, and make coated with light orientation material substrate 50 side upward so that
When substrate 50 is mobile with linear shifter, the light orientation material formed on substrate 50 can continuously receive exposure.Separately
Outside, substrate 50 can be crimped to be scroll-like, so that substrate 50 can be made in continuous moving, realization production on linear shifter
It makes.
The top of substrate 50 is provided with light source 80, and is provided with polaroid between light source 80 and substrate 50, so that light
The light that source 80 issues, which passes through polaroid and is irradiated to the light orientation material on substrate 50 and formed, has figuratum light redirecting layer.
In order to obtain the light redirecting layer of the differently- oriented directivity with consecutive variations, illustrate this in a manner of specific embodiment below
The method of disclosure of the invention.
Embodiment one
Referring to Fig. 6, in embodiment one kind, taking with consecutive variations is formed using the method for continuous scanning on substrate 50
To the light redirecting layer in direction.
Firstly, coating light orientation material on substrate 50.The substrate 50 for being coated with light orientation material is placed on linear shifting
On dynamic device, and make the side coated with light orientation material towards exposure light source 80, wherein exposure light source 80 can be ultraviolet light
Or blue light source 80.
It is provided with polaroid 90 between light source 80 and substrate 50 and the moving direction with length direction and substrate 50 hangs down
The straight barrier sheet 100 with slit allows light to sequentially pass through 90 slit of polaroid to the light orientation material on substrate 50
It is exposed.It should be noted that the relative position of polaroid 90 and barrier sheet 100 is without limitation, that is, polaroid 90 can position
In the top of barrier sheet 100, the lower section of barrier sheet 100 can also be located at.In order to obtain the light orientation direction of variation, polaroid 90
Plane internal rotation where being parallel to substrate 50, so that exposure light has the polarization direction of consecutive variations.Preferably, when inclined
When 90 every rotation 180 degree of mating plate, the mobile distance of substrate 50 is a pitch P.Wherein, pitch P is predetermined value, according to light orientation
The application of layer is preset.
During to light orientation material exposure on substrate 50, the width, predetermined of the movement speed of substrate 50, slit
50 light exposure of pitch P and substrate, the quantity of illumination have following relationship:
Embodiment two
Referring to Fig. 7, in order to obtain the light redirecting layer of the differently- oriented directivity with consecutive variations, half-wave retardation piece can also be used
It is individually exposed as duplication mother matrix, the specific method is as follows.
Firstly, coating light orientation material on substrate 50.The substrate 50 for being coated with light orientation material is placed on linear shifting
On dynamic device, and make the side coated with light orientation material towards exposure light source 80, wherein exposure light source 80 can be ultraviolet light
Or blue light source.
The half-wave plate of linear polarizer plate 120 and continuous axle variation is disposed between exposure light source 80 and substrate 50
130, so that the light that light source 80 issues is irradiated to substrate after sequentially passing through linear polarizer plate 120 and the half-wave plate 130 of axis variation
50, to form consecutive variations axis light redirecting layer.It should be noted that the pitch P of the light redirecting layer wherein newly formed is continuous
The 1/2 of the pitch of the half-wave plate 130 of axis variation.
50 linear movement of substrate is driven by using linear shifter, it can be on light orientation material on substrate 50
Different zones exposure, to form the consecutive variations axis light redirecting layer of large area.
Embodiment three
As shown in figure 8, can also use planar alignment wedge shaped element replace above-mentioned continuous axle variation half-wave plate as
Mother matrix.Wherein, glass substrate 150 of the wedge shaped element of planar alignment with gasket 140 and with light redirecting layer, wherein in glass
Liquid crystal molecule is closed in substrate 150.The wedge shaped element has the element thickness of consecutive variations, can make passing through wedge shaped element
The phase transformation introduced in polarization input light can be with consecutive variations, it usually needs 0 to 2 π.Specific implementation method is as follows.
Firstly, coating light orientation material on substrate 50.The substrate 50 for being coated with light orientation material is placed on linear shifting
On dynamic device, and make the side coated with light orientation material towards exposure light source 80, wherein exposure light source 80 can be ultraviolet light
Or blue light source.
Referring to Fig. 9, linear polarizer plate 120, planar alignment wedge shape are disposed between exposure light source 80 and substrate 50
Liquid crystal cells 160 and quarter-wave plate 170, so that the light that light source 80 issues sequentially passes through planar alignment wedge shape liquid crystal cells
160 and quarter-wave plate 170 after be irradiated to substrate 50.Wherein, by incident ray that light source 80 issues with 45 degree of polarization directions
Planar alignment wedge shape liquid crystal cells 160 are injected, to carry out line by line by phase of the planar alignment wedge shape liquid crystal cells 160 to light
Ground modulation.The optical axis of quarter-wave plate 170 is directed parallel to the polarised light of input.Light passes through quarter-wave plate
After 170, the linear polarization light output with variation axis orientation is formed.
Different zones on substrate 50 repeat above-mentioned exposure process, to form the consecutive variations axis light orientation of large area
Layer.
Example IV
Referring to Figure 10, wedge shaped element can also be replaced using the spatial light modulator (SLM) of plane or vertical orientation.Under
Face illustrates.
Firstly, coating light orientation material on substrate 50.The substrate 50 for being coated with light orientation material is placed on linear shifting
In dynamic device (not shown), and make the side coated with light orientation material towards exposure light source 80, wherein exposure light source 80
It can be ultraviolet light or blue light source.
180, four points of linear polarizer plate 120, spatial light modulator is disposed between exposure light source 80 and substrate 50
One of wave plate 170 and projection lens 190 so that light source 80 issue light sequentially pass through linear polarizer plate 120, space light modulation
Substrate 50 is irradiated to after device 180, quarter-wave plate 170 and projection lens 190.Wherein, spatial light modulator 180 is with pixel
Unit tune is modulated the phase of incident ray.Modulated light passes through quarter-wave plate 170, and being formed has variation axis
The linear polarization output light of orientation.The output light of quarter-wave plate 170 is transmitted to substrate 50 after projection lens 190
On light orientation material.
Mobile substrate 50, repeats above-mentioned exposure process, to form large area continuous axle variation light redirecting layer.
Another aspect of the present invention proposes a kind of method of light redirecting layer manufacture thin slice based on above-mentioned manufacture, the party
Method includes the following steps.
Light orientation dichroic material is coated, on substrate 50 to form light orientation dichroic layer.Wherein, substrate 50 can be
Transparent glass or plastics.Then the patterned continuous axle of light orientation dichroic layer is become using the method for above-mentioned formation light redirecting layer
Change polarizing layer.Preferably due to which polarizing layer is easily deformed in light, hot environment, therefore on the top of continuous axle variation polarizing layer
Portion is armor coated.
In one embodiment, light orientation dichroic layer includes identical or different light orientation molecule and dichroic molecules,
Pass through the solidification of the method for heating or illumination.Preferably, light orientation dichroic layer material is azo dyes.
Another aspect of the present invention, which discloses, a kind of is used to form directional orientation with consecutive variations using above-mentioned
The method that the method for light redirecting layer forms thin slice, the method for the formation thin slice include the following steps.
Referring to Figure 11 A and 11B, light orientation material is coated on substrate 50, and wherein substrate 50 is transparent glass or plastics.?
The light redirecting layer 60 with the directional orientation of continuous axle variation is formed on substrate 50.
In the top coating liquid material of patterned light redirecting layer to form functional layer 70.Functional layer 70 is for assigning this
Thin slice polarization or the function of delay, and after solidify the axis of functional layer 70 be orientated it is identical as light redirecting layer.Wherein, when production
When thin slice is delay piece, the thickness of functional layer 70 is corresponding to the predetermined delay value of axis change delay piece.
In one embodiment, functional layer 70 is the materials such as reactive polymer or liquid crystal monomer, and these materials are not
It can be dissolved with light redirecting layer.The reactive polymer or liquid crystal monomer for being used to form functional layer 70 have smectic
Phase is easy to orient in the curing process.
In one embodiment, reactive polymer or liquid crystal monomer are mixed with thermal initiator or photoinitiator, so as to
Correspondingly to be solidified using the method for heat treatment or light processing to form light redirecting layer 60.
Another aspect of the present invention proposes a kind of using the above-mentioned polaroid with continuous axle variation and delay piece system
The window for the Mechanical course light transmittance made.
2A and 12B referring to Fig.1, the window of the Mechanical course light transmittance include that two glass plates, 10, two axis change polarisation
Piece 20 or two fixing axle polaroids, 30, two axis change delay pieces 40 and controller (not shown), wherein controller
It is connect with two axis variation polaroids 20 to control the relative movement of two axis variation polaroids 20 or controller and two axis
Change delay piece 40 is connected to control the relative movement of two axis change delay pieces 40.
Two glass plates 10 are arranged in parallel, to form the protective layer of window.It is arranged in parallel between two glass plates 10
Two axis change polaroid 20.Preferably, the axis variation pitch of two axis variation polaroids 20 is identical with axis direction of rotation.When two
When the polarisation axis direction of a axis variation polaroid 20 is identical, the light transmittance of window is maximum；When two axis variation polaroids 20 along
When axis change direction relatively moves, light transmittance continuously changes to minimum from maximum, and when two axis change polaroid 20
Polarisation axis direction reaches the smallest light transmittance (perfect condition 0) when vertical.In this way, it is inclined to control two axis variations by controller
The consecutive variations of window transmissivity may be implemented in the relative movement of mating plate 20, will not form within sweep of the eye asking for black bands
Topic.
Furthermore it is also possible to be arranged in parallel between two glass plates 10, there are two fixing axle polaroids 30, and partially at two
Axis change delay piece 40 there are two being arranged in parallel between the orthogonal fixing axle polaroid 30 of optical axis.Preferably, two axis are solid
Surely the delay axis having the same of piece 40 variation pitch and axis direction of rotation.When the axis direction of two axis change delay pieces 40 is identical
When, the light transmittance of window is maximum；When two axis change delay pieces 40 are relatively moved along axis change direction, the light transmittance of window
It is gradually reduced, when two axis change delay pieces are in state is mutually perpendicular to, the light transmittance of window is minimum (perfect condition 0).
Here, two axis change delay pieces 40 are relatively moved 1/4 pitch can be realized from maximum transmission degree to minimum light transmittance
Variation.In one embodiment, two axis change delay pieces 40 are half-wave retardation piece.
Claims (33)
1. a kind of method for making the light redirecting layer of the differently- oriented directivity with consecutive variations, the method includes following steps
It is rapid:
Light orientation material is coated on substrate；
The substrate is placed on linear shifter；With
The side coated with light orientation material of the substrate is exposed under light source, wherein the light that the light source issues passes through
Polaroid is irradiated on the light orientation material coated on the substrate, has figuratum light to be formed on the light orientation material
Oriented layer.
2. according to the method described in claim 1, wherein, the substrate is transparent glass or plastic plate.
3. according to the method described in claim 1, wherein, the substrate has web-like shape.
4. according to the method described in claim 1, wherein, plane inward turning of the polaroid where being parallel to the substrate
Turn, so that incident exposure light has the polarization direction of consecutive variations.
5. according to the method described in claim 4, wherein, when the polaroid rotates 180 degree, the mobile distance of the substrate
For a pitch (P) of predetermined length.
6. according to the method described in claim 5, wherein, setting has the blocking of slit between the light source and the substrate
Piece, and the length direction of the slit is vertical with the moving direction of the substrate.
7. according to the method described in claim 6, wherein, the movement speed (v) of the substrate, the width of slit, predetermined pitch
(P) and substrate light exposure, the quantity of illumination have following relationship:
8. according to the method described in claim 6, wherein, the slit is located above or below the polaroid.
9. according to the method described in claim 1, wherein, the polaroid is linear polarizer plate, and in the linear polarization
Continuous axle variation half-wave retardation piece is provided between piece and the substrate so that the light that the light source issues sequentially pass through it is described
The substrate is irradiated to after linear polarizer plate and the half-wave retardation piece.
10. according to the method described in claim 1, wherein, the polaroid is linear polarizer plate, and in the linear polarization
Planar alignment wedge shape liquid crystal cells and quarter-wave plate are set gradually between piece and the substrate, so that the light source issued
Light is irradiated to the substrate after sequentially passing through the planar alignment wedge shape liquid crystal cells and the quarter-wave plate.
11. according to the method described in claim 1, wherein, the polaroid is linear polarizer plate, and in the linear polarization
Spatial light modulator, quarter-wave plate and projection lens are set gradually between piece and the substrate, so that the light source issues
Light sequentially pass through the spatial light modulator, the quarter-wave plate and the projection lens after be irradiated to the base
Piece.
12. a kind of light redirecting layer of the method described according to claim 1 any one of -11 manufacture manufactures the side of thin slice
Method the described method comprises the following steps:
Light orientation dichroic material is coated, on substrate to form light orientation dichroic layer；With
The patterned continuous axle of the light orientation dichroic layer is changed by method of any of claims 1-11
Polarizing layer.
13. according to the method for claim 12, wherein the substrate is transparent glass or plastics.
14. according to the method for claim 12, further includes:
In the top coating protective layer of continuous axle variation polarizing layer.
15. according to the method for claim 12, wherein the light orientation dichroic layer includes identical or different light orientation
Molecule and dichroic molecules.
16. according to the method for claim 15, wherein the light orientation dichroic layer is made of azo dyes.
17. according to the method for claim 15, wherein the light orientation molecule and the dichroic molecules by heating or
The method of illumination solidifies.
18. according to the method for claim 12, wherein the dichroic light redirecting layer has multiple pitches (P).
19. a kind of method for forming thin slice using the method for any of claims 1-11, the side for forming thin slice
Method the following steps are included:
Light orientation material is coated on substrate；
Light orientation patterns of material is turned into continuous axle by method of any of claims 1-11 and changes oriented layer；With
The patterned light redirecting layer top coating liquid material to form functional layer, wherein the functional layer is solidifying
Axis orientation later is identical as the light redirecting layer.
20. according to the method for claim 19, wherein the functional layer is reactive polymer or liquid crystal monomer.
21. according to the method for claim 20, wherein be used to form the functional layer liquid material will not dissolve it is described
Light redirecting layer.
22. according to the method for claim 20, wherein the reactive polymer or liquid crystal monomer are with disc-like liquid crystal point
Sub- phase.
23. according to the method for claim 20, wherein the reactive polymer or liquid crystal monomer and thermal initiator or light
Initiator mixing, and respectively using heat treatment or light processing solidification to form the light redirecting layer.
24. according to the method for claim 20, wherein the reactive polymer or liquid crystal monomer and dichroic dye
Mixing.
25. according to the method for claim 19, wherein the thickness of the functional layer is predetermined with the axis change delay piece
Length of delay is corresponding.
26. a kind of thin slice manufactured using method described in any one of claim 19-25, the thin slice include:
Substrate；
Light redirecting layer, the light redirecting layer are the light redirecting layer of the continuous change in orientation positioned at the side of the substrate；With
Functional layer, the functional layer are arranged on the light redirecting layer.
27. a kind of window of Mechanical course light transmittance, comprising:
Two glass plates disposed in parallel；
The two axis variation polaroid being arranged in parallel between described two glass plates, or it is arranged in parallel in described two glass
Two fixing axle polaroids between plate and two axis being arranged in parallel between described two fixing axle polaroids variation are prolonged
Slow piece；With
Controller, the controller are connected to control described two axis variation polaroid phases with described two axis variation polaroid
It is connected movement or the controller to control described two axis change delays with described two axis change delay pieces respectively
Piece relative movement.
28. the window of Mechanical course light transmittance according to claim 27, wherein described two axis variation polaroids have
Identical axis variation pitch and axis direction of rotation.
29. the window of Mechanical course light transmittance according to claim 28, wherein the controller controls described two axis
Variation polaroid is moved along the change direction of its polarizing axis.
30. the window of Mechanical course light transmittance according to claim 29, wherein when described two axis variation polaroid moves
When moving orthogonal to polarizing axis, the light transmittance of the window is 0.
31. the window of Mechanical course light transmittance according to claim 27, wherein described two axis change delay pieces are
Half-wave retardation piece.
32. the window of Mechanical course light transmittance according to claim 27, wherein described two axis fix the inclined of polaroid
Optical axis is orthogonal.
33. the window of Mechanical course light transmittance according to claim 27, wherein described two axis fixed delay pieces have
Identical axis variation pitch and axis direction of rotation.
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| US201762606340P | 2017-09-20 | 2017-09-20 | |
| US62/606,340 | 2017-09-20 |
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| CN109752883B CN109752883B (en) | 2022-08-09 |
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| CN109752883B (en) | 2022-08-09 |
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