CN207067434U

CN207067434U - The optical reflection film of curve form, the light control film for having used the optical reflection film, optical film, functional glass and head-up display

Info

Publication number: CN207067434U
Application number: CN201720356185.9U
Authority: CN
Inventors: 田中兴; 田中兴一
Original assignee: Nippon Kayaku Co Ltd
Current assignee: Nippon Kayaku Co Ltd
Priority date: 2016-04-07
Filing date: 2017-04-06
Publication date: 2018-03-02
Anticipated expiration: 2027-04-06
Also published as: CN107272105A; JP2017187685A; HK1245896A1

Abstract

The utility model proposes the optical reflection film for reflectivity, excellent in workability the curve form that specific polarization light effectively can be only improved while high visible light transmissivity is maintained, the light control film, optical film, functional glass and the head-up display that have used the optical reflection film.A kind of optical reflection film of curve form, it is characterized in that, it is laminated with reflection layer more than at least two, the reflection layer more than at least two includes the reflection layer of more than 1 in reflection layer PRL 1, reflection layer PRL 2 and reflection layer PRL 3, and there is mutually different center reflection wavelength, reflection layer more than above-mentioned at least two of stacking is respectively provided with the characteristic of the polarised light of reflection equidirectional and keeps curve form in the non-loaded state, and thickness is less than more than 50 μm 500 μm.

Description

The optical reflection film of curve form, the light control film for having used the optical reflection film, optics Film, functional glass and head-up display

Technical field

It the utility model is related to the optical reflection film for being suitable for such as head-up display and its manufacture method and use Light control film, optical film, functional glass and the head-up display of the optical reflection film.

Background technology

As the method for driver's display information to automobile, aircraft etc., navigation system (navigation is used System), head-up display (hereinafter also referred to as HUD) etc..HUD is will to scheme from liquid crystal display (hereinafter referred to LCD) etc. As system of the image projection that projecting cell projects on such as the windshield of automobile.

Fig. 1 is HUD schematic diagram.As shown in light path 5, the light being emitted from image-display units 2 reflects at speculum 3, Again observer 1 is reached after the reflection of windshield 4.Observer 1 sees the image being projected on windshield 4, but has seen Carry out image and be in the picture position 6 more remote than windshield 4.In the case of this method, before driver is look at windshield 4 Various information can be obtained substantially without mobile sight in the state of side, therefore, vehicle-mounted are led with the existing of sight must be moved Instrument navigate compared to safe.

Because HUD is overlappingly to be projected display information and the actual scenery seen from windshield 4, therefore, the phase Hope and the bright image easily seen clearly is shown in the case where not blocking the visual field.For this reason, it may be necessary to front scape be able to fully be seen clearly by having concurrently The transmittance of color and be able to fully see clearly HUD reflected image reflectivity.But transmissivity and reflectivity are generally in and are contrary to instead Relation, one be present and improve the problem of then another one reduces.

It is legally restricted particularly in the case of the windshield of automobile using, it is desirable on the direction vertical with glass Transmission of visible light more than 70%, accordingly, it is difficult to application with high reflectance component.For such problem, special Following technologies are disclosed in sharp document 1~4, are set in the laminated glass of windshield with polarization unit, Polarization Modulation list Member, the combiner of reflectivity polarization unit, thus according to the brilliance control Polarization Modulation unit of surrounding, the transmission of control group clutch Rate, reflectivity.

In addition, Patent Document 5 discloses following technologies, will using cholesteric liquid crystal layers as the unit of reflected light It is configured in the windshield of automobile using.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 11-249061 publications

Patent document 2：Japanese Unexamined Patent Publication 11-249062 publications

Patent document 3：Japanese Unexamined Patent Publication 11-281916 publications

Patent document 4：Japanese Unexamined Patent Publication 2000-28957 publications

Patent document 5：No. 2014/0307176 specification of U.S. Patent Application Publication No.

Utility model content

Utility model problem to be solved

In the technology of patent document 1~3 and 4, as Polarization Modulation unit, liquid crystal cell has been used.Liquid crystal cell is generally used Glass substrate makes, accordingly, it is difficult to be applied in the laminated glass for the windshield being made up of curved surface.In addition, in recent years, The technology of the display image in windshield entire surface is studied, is entered in laminated glass entire surface using curved liquid crystal cell Row Polarization Modulation is extremely difficult.In addition, on patent document 5, although cholesteric liquid crystal film is configured in windshield, But the film is uncertain for the area of which kind of degree relative to windshield, in the situation suitable with windshield entire surface Under, the processability of laminated glass has difficulties.

The purpose of this utility model is to propose that one kind effectively can only carry while high visible light transmissivity is maintained The optical reflection film and its manufacture method of reflectivity, excellent in workability the curve form of high specific polarization light；And use Light control film, optical film, functional glass and the head-up display of the optical reflection film.

Means for solving the problems

Inventor of the present utility model solution above-mentioned problem has made intensive studies, and is as a result found that a kind of light reflection Film, by using the optical reflection film of the curve form, in the case of the windshield for car, also can maintain it is high can See the optical reflection film for the reflectivity that specific polarization light is effectively only improved while light transmission；And it is found that anti-using the light Penetrate light control film, optical film, functional glass and the head-up display of film, and then new discovery is for the gear with curve form Wind glass can easily carry out laminated glass processing, so as to complete the utility model.The optical reflection film of above-mentioned curve form It is characterised by, it is laminated with reflection layer more than at least two, and the reflection layer of at least more than 2 includes reflection layer The reflection layer of more than 1 in PRL-1, reflection layer PRL-2 and reflection layer PRL-3, and with mutually different Oculo cardiac reflex wavelength, reflection layer PRL-1 has center reflection wavelengths of the 400nm less than 500nm in flat shape, right The reflectivity of ordinary light at the center reflection wavelength is less than more than 5% 25%, and reflection layer PRL-2 has in flat shape There is center reflection wavelengths of the 500nm less than 600nm, the reflectivity to the ordinary light at the center reflection wavelength is 5% Below the above 25%, reflection layer PRL-3 has center reflection wavelengths of the 600nm less than 700nm in flat shape, Reflectivity to the ordinary light at the center reflection wavelength is less than more than 5% 25%, light more than above-mentioned at least two of stacking Reflecting layer is respectively provided with the characteristic of the polarised light of reflection equidirectional and keeps curve form in the non-loaded state, and thick Spend for less than more than 50 μm 500 μm.It should be noted that PRL is Polarized light Reflection Layer (polarizations Reflection layer) abbreviation, be the alphabetic flag for representing reflection layer.

That is, it is of the present utility model to mainly consist of.

(1) a kind of optical reflection film of curve form, it is characterised in that it is laminated with reflection layer more than at least two, should More than at least two reflection layer include 1 in reflection layer PRL-1, reflection layer PRL-2 and reflection layer PRL-3 with On reflection layer, and there is mutually different center reflection wavelength, the reflection layer PRL-1 has in flat shape There is center reflection wavelengths of the 400nm less than 500nm, the reflectivity to the ordinary light at the center reflection wavelength is 5% Below the above 25%, the reflection layer PRL-2 has foveal reflexs of the 500nm less than 600nm in flat shape Wavelength, the reflectivity to the ordinary light at the center reflection wavelength is less than more than 5% 25%, and the reflection layer PRL-3 exists There is center reflection wavelengths of the 600nm less than 700nm, to the ordinary light at the center reflection wavelength during flat shape Reflectivity be less than more than 5% 25%,

Stacking described at least two more than reflection layer be respectively provided with reflection equidirectional polarised light characteristic and Curve form is kept in the non-loaded state, and thickness is less than more than 50 μm 500 μm.

(2) optical reflection film as described in (1), it is characterised in that the radius of curvature of the curve form of the optical reflection film is More than 0.5m below 20m.

(3) optical reflection film as described in (1) or (2), it is characterised in that reflection layer more than described at least two includes 2 in the reflection layer PRL-1, the reflection layer PRL-2 and the reflection layer PRL-3 or 3 reflection layers.

(4) optical reflection film as any one of (1)~(3), it is characterised in that light more than described at least two is anti- Penetrate layer has more than 700nm below 950nm's comprising reflection layer PRL-4, the reflection layer PRL-4 in flat shape Center reflection wavelength, the reflectivity to the ordinary light at the center reflection wavelength are less than more than 5% 25%, and with reflection With the reflection layer PRL-1 described in (1) or (2), the reflection layer PRL-2 and the reflection layer PRL-3 phase Tongfangs To polarised light characteristic.

(5) optical reflection film as any one of (1)~(4), it is characterised in that the half-peak of each reflection layer is a width of More than 100nm below 500nm.

(6) optical reflection film as any one of (1)~(5), it is characterised in that each reflection layer is with immobilization Screw orientation cholesteric liquid crystal layers.

(7) a kind of light control film of curve form, it is characterised in that it is laminated with the light any one of (1)~(6) Reflectance coating and at least one of quarter wave plate and light absorbing layer optical control layer.

(8) light control film as described in (7), it is characterised in that the optical control layer is quarter wave plate.

(9) light control film as described in (8), it is characterised in that the optical control layer is 2 quarter wave plates, the light reflection Film is laminated in a manner of being clamped by 2 quarter wave plates.

(10) light control film as described in (9), it is characterised in that 2 quarter wave plates are with the mutually orthogonal position of slow axis Relation is laminated.

(11) a kind of optical film of curve form, its by the optical reflection film any one of (1)~(6) or (7)~ (10) light control film any one of is laminated with intermediate coat.

(12) optical film as described in (11), it is characterised in that the optical reflection film or light control film are with by 2 intermediate coats The mode of clamping is laminated.

(13) a kind of functional glass of curve form, it is with the optical reflection film any one of (1)~(6), (7) Any of optical film described in light control film or (11) or (12) any one of~(10).

(14) functional glass as described in (13), it is characterised in that it is the light any one of by (1)~(6) Any of optical film described in light control film or (11) or (12) any one of reflectance coating, (7)~(10) is used The laminated glass that 2 glass plate clampings form.

(15) a kind of head-up display, optical reflection film any one of (1)~(6) is it used, in (7)~(10) In the optical film described in light control film, (11) or (12) described in any one or the functional glass described in (13) or (14) It is any.

(16) head-up display as described in (15), it is characterised in that it, which has, is used to carry out the projecting apparatus that image is shown, The circularly polarized light phase Tongfang with the optical reflection film selective reflecting any one of (1)~(6) is provided with the projecting apparatus To circularly polarized light outgoing unit.

(17) head-up display as described in (15), it is characterised in that it, which has, is used to carry out the projecting apparatus that image is shown, The unit of outgoing P polarization light is provided with the projecting apparatus.

(18) head-up display as described in (17), it is characterised in that the light control film any one of (7)~(10) Or in the optical film described in (11) or (12) and the functional glass described in (13) or (14), be laminated quarter wave plate Any of optical film and functional glass so that the slow axis of the quarter wave plate relative to the P polarization light of outgoing into 45 degree Mode laminated configuration.

(19) a kind of manufacture method of the optical reflection film of curve form, it is the curved any one of (1)~(6) The manufacture method of the optical reflection film of shape, it is characterised in that there are following processes：

The process for forming layered product, the laminate layers are laminated with reflection layer more than at least two, more than described at least two Reflection layer include the reflection layer PRL-1, the reflection layer PRL-2 and the reflection layer PRL-3 in 1 Reflection layer above, and there is mutually different center reflection wavelength；With

The layered product is wound on roller, processing is then dried, the layered product is thus deformed into curved The process of shape.

The effect of utility model

Optical reflection film of the present utility model has high visible light transmissivity, and effectively only improves the anti-of specific polarization light Penetrate rate, the visuality of the projected image thus, it is possible to improve HUD, particularly as windshield legally to visible ray In the case of transmissivity is conditional, HUD projected image can be only improved while required transmission of visible light is maintained Visuality.In addition, optical reflection film of the present utility model is due to having curve form in advance, thus for the such tool of windshield There is the glass baseplate of curve form, can easily carry out laminated glass processing.In addition, there is optical reflection film of the present utility model And use the functional glass of any of light control film and the optical film of optical reflection film film can limpid in sightly The HUD of windshield entire surface display image is mirrored, driver can see in any part of windshield and clearly scheme Picture.In addition, either in the case of the image of bore hole viewing projection, or in the case where having on polarized sunglasses viewing, Bright image can be seen.

Brief description of the drawings

Fig. 1 is the schematic diagram for showing existing head-up display (HUD).

Fig. 2 is the schematic sectional view for the 1st embodiment for showing optical reflection film of the present utility model.

Fig. 3 is the partial enlarged drawing in the A portions in Fig. 2.

Fig. 4 is the schematic sectional view for the 2nd embodiment for showing optical reflection film of the present utility model.

Fig. 5 is the partial enlarged drawing in the B portions in Fig. 4.

Fig. 6 is the schematic sectional view for the 1st embodiment for showing light control film of the present utility model.

Fig. 7 is the partial enlarged drawing in the C portions in Fig. 6.

Fig. 8 is the schematic sectional view for the 2nd embodiment for showing light control film of the present utility model.

Fig. 9 is the partial enlarged drawing in the D portions in Fig. 8.

Figure 10 is the schematic sectional view for the 3rd embodiment for showing light control film of the present utility model.

Figure 11 is the partial enlarged drawing in the E portions in Figure 10.

Figure 12 is the schematic sectional view for an embodiment for showing optical film of the present utility model.

Figure 13 is the partial enlarged drawing in the F portions in Figure 12.

Figure 14 is the schematic sectional view for an embodiment for showing functional glass of the present utility model.

Figure 15 is the schematic diagram for an embodiment for showing head-up display of the present utility model.

Figure 16 is the curve map of the reflection characteristic of each reflection layer for showing to use in embodiment 1~4.

Figure 17 is the curve map of the reflection characteristic of each reflection layer for showing to use in embodiment 5.

Figure 18 is the curve map of the reflection characteristic of each reflection layer for showing to use in embodiment 6.

Embodiment

Each reflection layer for forming the optical reflection film used in the utility model has following characteristics：For being converted into spy Light determining polarised light, being emitted from image-display units has high reflectance.Polarised light mainly has linearly polarized light and circularly polarized light, As the reflection layer for reflecting this polarised light, for example, for linearly polarized light, can enumerate by different two or more of refractive index The birefringence interference type that is formed of macromolecular multilayer film that forms of macromolecule polariscope, to be referred to as having for wire grid type fine The polariscope of concaveconvex structure, in addition, for circularly polarized light, polariscope formed by cholesteric liquid crystal layers etc. can be enumerated, especially It is the polariscope preferably formed by cholesteric liquid crystal layers for circularly polarized light.

In addition, the optical reflection film used in the utility model needs the light of the wavelength to being emitted from image-display units to carry out Reflection, therefore, it is necessary to blue, green, the red polarised light in visible ray is reflected.On the other hand, keeping out the wind in such as automobile In the case of glass is legally conditional to transmission of visible light like that, if for being not carried out only carrying using polarizing filter etc. Take out specific polarization light composition processing light, the reflectivity of i.e. so-called ordinary light it is too high, then decrease in transmission and can not make With therefore, it is necessary to reflectivity of the suitable control optical reflection film to ordinary light.Such optical reflection film is laminated with more than at least two Reflection layer, the reflection layer more than at least two includes reflection layer PRL-1, reflection layer PRL-2 and reflection layer The reflection layer of more than 1 in PRL-3, and there is mutually different center reflection wavelength, the reflection layer PRL-1 tools There is center reflection wavelengths of the 400nm less than 500nm, the reflectivity to the ordinary light at the center reflection wavelength is 5% Below the above 25%, the reflection layer PRL-2 has center reflection wavelengths of the 500nm less than 600nm, in this The reflectivity of ordinary light at oculo cardiac reflex wavelength is less than more than 5% 25%, and the reflection layer PRL-3 has more than 600nm And the center reflection wavelength less than 700nm, to the reflectivity of the ordinary light at the center reflection wavelength for more than 5% 25% with Under.This expression, any one of optical reflection film of the present utility model for example in reflection layer PRL-1, PRL-2, PRL-3 is only included In the case of reflection layer, by only any one reflection layer in reflection layer PRL-1, PRL-2, PRL-3 and selected from by having Light more than at least one in the group be made up of other reflection layers of the center reflection wavelength different from these reflection layers is anti- The stepped construction for penetrating layer is formed, and forming the number of plies of the reflection layer of optical reflection film needs to be more than at least two.In addition, light reflects Layer PRL-1, PRL-2, PRL-3 are each preferably less than more than 10% 25%, are more preferably for the reflectivity of ordinary light Less than more than 15% 20% Zuo You be suitable.It should be noted that each reflection layer is for ordinary at center reflection wavelength , then can be all identical as long as the reflectivity of light can be adjusted in above range, can also be different.

Center reflection wavelength in the utility model refers to, equivalent to the maximum reflectivity of each reflection layer 80% it is short The mean wavelength of the wavelength of wavelength side and the wavelength of long wavelength side.For example, PRL-1 maximum reflectivity be 20% situation Under, it would indicate that the wavelength of the short wavelength side equivalent to its 80% i.e. 16% reflectivity is set to λ 1, the wavelength by long wavelength side When being set to λ 3, reflection wavelength centered on the λ 2 shown in following formula (1).

(λ 1+ λ 3)/2=λ 2 (1)

In addition, in the utility model, as long as having used more than 1 in reflection layer PRL-1, PRL-2, PRL-3 Reflection layer, then the stacking number of these reflection layers can be adjusted according to the width of the reflected waveband of each reflection layer.As long as The light of image-display units from HUD can be reflected with desired amount, then can be PRL-1, PRL-2, PRL-3 In any 1 layer, 2 layers can also be laminated, 3 layers can also be all laminated.In addition, wanting adjustment reflected waveband In the case of, can also in the reflection layer of stacking use have it is different from reflection layer PRL-1, PRL-2, PRL-3 in The other reflection layer of oculo cardiac reflex wavelength, but when being converted to linearly polarized light from circularly polarized light using quarter wave plate described later, need The linearly polarized light of equidirectional is converted to, therefore, it is necessary to each reflection layer of stacking is respectively provided with the inclined of reflection equidirectional Shake the characteristic of light.

It is incident in the case where reflection layer is cholesteric liquid crystal layers for the optical reflection film used in the utility model The polarised light come in can be linearly polarized light or circularly polarized light, but preferably incident circularly polarized light.Cholesteric liquid crystal layers can Formed in a manner of according to reflection any of right-circularly polarized light or left circularly polarized light polarised light, because circularly polarized light does not have There is axle, therefore, only by the way that right-circularly polarized light or the left-handed circle that the polarised light come in selection is reflected by reflection layer will be entered Any of polarised light polarised light, you can easily and stably obtain high reflectance.

As the method for obtaining circularly polarized light, for example, by the absorption-type polarizer of dyestuff system, iodine system etc and quarter wave plate with The absorption axiss or the axis of homology for making polarizer configure relative to the slow axis or fast axle of the quarter wave plate into 45 degree of mode.At this In utility model, as long as turning into circularly polarized light before reflection layer is reached, you can obtain high reflectance, therefore, can both make It is incident to reflection layer after into the so-called circular polarizing disk for being laminated polarizer and quarter wave plate, can also by quarter wave plate with Reflection layer is laminated and configured in a manner of quarter wave plate is located at polarizer side together.Reflected by light as stacking Film and quarter wave plate, light control film of the present utility model can be obtained.

The cholesteryl liquid crystal used in reflection layer adds by the nematic crystal with chirality or in nematic crystal The complex that chiral reagent forms is formed.Due to that can utilize the species of chiral reagent, measure come the direction of arbitrarily devised spiral, instead Ejected wave is grown, therefore the method added chiral reagent preferably in nematic crystal and obtain cholesteryl liquid crystal.In the utility model The nematic crystal used is different from the so-called liquid crystal operated by electric field, is that screw orientation state immobilization is later Use, it is therefore preferable that using the nematic liquid crystal monomer with polymerizable group.

Nematic liquid crystal monomer with polymerizable group refers to intramolecular with polymerizable group and in specific temperature The compound of liquid crystal liquid crystal property is shown in scope or concentration range.As polymerizable group, for example, (methyl) acryloyl Base, vinyl, chalcone base, cinnamoyl or epoxy radicals etc..In addition, in order to show liquid crystal liquid crystal property, preferably have in intramolecular Mesomorphic group, mesomorphic group refer to the group of the ability with induction Mesomorphic behavior, such as xenyl, terphenyl, (poly-) Bar-shaped, tabular the substituent such as phenylamino benzoic acid ester group, (poly-) ether, benzalaniline base or acenaphthene and quinoxalinyl, or benzo The discoid substituents such as phenanthryl, phthalocyanine base or aza-crown ether (azacrown group).With bar-shaped or tabular group Liquid-crystal compounds is known in the art as rod shaped liquid crystal.Such nematic crystal with polymerizable group Monomer can specifically enumerate Japanese Unexamined Patent Publication 2003-315556 publications and poly- described in Japanese Unexamined Patent Publication 2004-29824 publications Conjunction property liquid crystal and PALIOCOLOR serial (BASF AG's manufacture), RMM serial (manufacture of Merck companies) etc..These have polymerization The nematic liquid crystal monomer of property group can be used alone, or is used in mixed way a variety of.

As chiral reagent, it is preferably able to make the above-mentioned nematic liquid crystal monomer with polymerizable group with dextrorotation or left-handed Mode carry out screw orientation and the change with polymerizable group in the same manner as the nematic liquid crystal monomer with polymerizable group Compound.As such chiral reagent, for example, Paliocolor LC756 (BASF AG's manufacture), Japanese Unexamined Patent Publication Compound described in 2002-179668 publications etc..It can determine that reflected circle is inclined using the species of the chiral reagent Shake the direction of light, and then, the reflection of reflection layer can be changed relative to the addition of nematic crystal according to chiral reagent Wavelength.For example, the addition of chiral reagent is more, the reflection layer of the more wavelength of the long side of reflecting short can be obtained.Chirality examination The addition of agent is different also according to species and the wavelength that is reflected of chiral reagent, but in order to by reflection layer to ordinary light Center reflection wavelength λ 2 is adjusted to desired wavelength region, relative to the weight of nematic liquid crystal monomer 100 with polymerizable group Measure part, the addition of chiral reagent is preferably parts by weight of 0.5 parts by weight~30 or so, the parts by weight of more preferably 1 parts by weight~20 Parts by weight of left and right, more preferably 3 parts by weight~10 or so.

Can also further add can with polymerizable group nematic liquid crystal monomer reaction, without liquid crystal The polymerizable compound of property.As such compound, for example, ultraviolet curing resin etc..Consolidate as ultraviolet Change type resin, for example, dipentaerythritol six (methyl) acrylate, (methyl) acrylate of dipentaerythritol five with The reaction product of 1,6- hexamethylene diisocyanates, the triisocyanate and the (first of pentaerythrite three with isocyanurate ring Base) reaction product of acrylate, the reaction product of (methyl) acrylate of pentaerythrite three and IPDI, Dipentaerythritol five (methyl) acrylate, dipentaerythritol four (methyl) acrylate, pentaerythrite four (methyl) acrylic acid Ester, pentaerythrite three (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, (first of double trimethylolpropane four Base) it is acrylate, three (acryloyl-oxyethyl) isocyanuric acid esters, three (methacryloxyethyl) isocyanuric acid esters, sweet Oily triglycidyl ether and the reaction product of (methyl) acrylic acid, caprolactone modification three (acryloyl-oxyethyl) isocyanuric acid Ester, the reaction product of trihydroxymethylpropanyltri diglycidyl ether and (methyl) acrylic acid, triglycerin two (methyl) acrylate, third The reaction product of Hexanediol diglycidyl ether and (methyl) acrylic acid, polypropylene glycol two (methyl) acrylate, tripropylene glycol two (methyl) acrylate, polyethylene glycol two (methyl) acrylate, tetraethylene glycol two (methyl) acrylate, triethylene glycol two (methyl) acrylate, pentaerythrite two (methyl) acrylate, 1,6 hexanediol diglycidylether and (methyl) acrylic acid Reaction product, 1,6-HD two (methyl) acrylate, glycerine two (methyl) acrylate, ethylene glycol diglycidyl The reaction product of ether and (methyl) acrylic acid, the reaction product of diethylene glycol diglycidyl glycerin ether and (methyl) acrylic acid, double (third Alkene trimethylammonium) hydroxyethylisocyanurate, double (methacryloxyethyl) hydroxyethylisocyanurates, bisphenol-A two Reaction product, (methyl) acrylic acid tetrahydro furfuryl ester, the caprolactone modification (methyl) third of glycidol ether and (methyl) acrylic acid Olefin(e) acid tetrahydro furfuryl ester, (methyl) 2-Hydroxy ethyl acrylate, (methyl) 2-hydroxypropyl acrylate, polypropylene glycol (first Base) acrylate, polyethylene glycol (methyl) acrylate, (methyl) acrylic acid phenoxy group hydroxypropyl acrylate, acryloyl morpholine, methoxy Base polyethylene glycol (methyl) acrylate, methoxyl group tetraethylene glycol (methyl) acrylate, methoxy triethylene (methyl) third Olefin(e) acid ester, methoxy ethyl glycol (methyl) acrylate, (methyl) methoxyethyl acrylate, (methyl) glycidyl Ester, (methyl) glycerol acrylate, (methyl) acrylic acid ethyl carbitol ester, (methyl) acrylic acid -2- ethoxy ethyl esters, (first Base) acrylic acid-N, N- dimethylaminoethyl, (methyl) 2-cyanoethyl acrylate, butyl glycidyl base ether and (methyl) Reaction product, butoxytriglycol (methyl) acrylate or butanediol list (methyl) acrylate of acrylic acid etc., these Compound can be used alone, or be use mixing two or more.These do not have the ultraviolet curing resin of liquid crystal liquid crystal property Must be add the degree of liquid crystal liquid crystal property forfeiture, relative to the weight of nematic liquid crystal monomer 100 with polymerizable group Part it is preferably that the parts by weight of 0.1 parts by weight~20, the parts by weight of more preferably 1.0 parts by weight~10 or so are suitable.

The nematic liquid crystal monomer or other polymerizable compounds with polymerizable group used in the utility model In the case of for ultraviolet hardening, add photopolymerization in order to solidify the composition containing these compositions using ultraviolet and draw Send out agent.As Photoepolymerizationinitiater initiater, for example, 2- methyl isophthalic acids-[4- (methyl mercapto) phenyl] -2- morpholinoes propane -1 (BASF AG Irgacure 907), 1- hydroxy cyclohexyl phenylketones (BASF AG Irgacure 184), 4- (2- hydroxyls Base oxethyl)-phenyl (2- hydroxyl -2- propyl group) ketone (BASF AG Irgacure 2959), 1- (4- dodecylphenyls) - 2- hydroxy-2-methyl propane -1- ketone (Merck company systems Darocure 953), 1- (4- isopropyl phenyls) -2- hydroxyl -2- first Base propane -1- ketone (Merck company systems Darocure 1116), 2- hydroxy-2-methyl -1- phenyl-propane -1- ketone (BASF companies Irgacure 1173 processed), the acetophenone based compound such as diethoxy acetophenone, benzoin, benzoin methylether, benzoin ethyl ether, Benzoin iso-propylether, benzoin isobutyl ether, 2,2- dimethoxy -2- phenyl acetophenones (BASF AG Irgacure 651) Deng benzoin based compound, benzoylbenzoic acid, methyl benzoylbenzoate, 4- phenyl benzophenones, dihydroxy benaophenonel, 4- Benzoyl -4 '-dimethyl diphenyl sulfide, 3,3 '-dimethyl -4- methoxy benzophenones (Japanese chemical drug company system Kayacure MBP) etc. benzophenone based compound, thioxanthones, CTX (Japanese chemical drug company system Kayacure CTX), 2- methyl thioxanthones, 2,4- dimethyl thioxanthones (Kayacure RTX), isopropyl thioxanthone, the clopenthixal ketones of 2,4- bis- (Japanese chemical drug company system Kayacure CTX), 2,4- diethyl thioxanthones (Japanese chemical drug company system Kayacure DETX) or Thioxanthones based compounds such as 2,4- diisopropylthioxanthones (Japanese chemical drug company system Kayacure DITX) etc..Can preferably it lift Go out such as Irgacure TPO, Irgacure TPO-L, Irgacure OXE01, Irgacure OXE02, Irgacure1300、Irgacure184、Irgacure 369、Irgacure 379、Irgacure 819、 Irgacure 127th, Irgacure 907 or Irgacure 1173 (being BASF AG's manufacture), particularly preferably enumerate Irgacure TPO, Irgacure TPO-L, Irgacure OXE01, Irgacure OXE02, Irgacure 1300 or Irgacure 907.This A little Photoepolymerizationinitiater initiaters can use one kind, can also be used in mixed way two or more with arbitrary proportion.

In the case where using benzophenone based compound, thioxanthones based compound as Photoepolymerizationinitiater initiater, in order to promote Enter photopolymerization reaction, auxiliary agent can also be shared.As such auxiliary agent, for example, triethanolamine, methyl diethanolamine, Triisopropanolamine, n-butylamine, N methyldiethanol amine, diethyl aminoethyl methacrylate, michler's ketone, 4,4 '-diethyl Base amino benzophenone, EDMAB, 4- dimethylaminobenzoic acids (n-butoxy) ethyl ester or 4- dimethyl The amine compounds such as aminobenzoic isoamyl valerate.

The addition of above-mentioned Photoepolymerizationinitiater initiater and auxiliary agent preferably will not to the utility model in use include nematic The liquid crystal liquid crystal property of the composition of type liquid crystal monomer uses in the range of impacting, its amount relative in said composition by ultraviolet The parts by weight of compound 100 that line is solidified are preferably more than 0.5 parts by weight below 10 parts by weight, more preferably 2 parts by weight with Left and right is suitable below upper 8 parts by weight.In addition, auxiliary agent is that 0.5 times~2 times amount left and right are suitable relative to Photoepolymerizationinitiater initiater Suitable.

Reflected as using above-mentioned cholesteryl liquid crystal to make light used in the optical reflection film used in the utility model Layer method, for example, into the nematic liquid crystal monomer with polymerizable group add requirement, it is desired in order to reflect Wavelength and the chiral reagent for making its left or right rotation.Then, dissolve them in solvent, add Photoepolymerizationinitiater initiater.So As long as solvent can dissolve used liquid crystal monomer, chiral reagent etc., be not particularly limited, such as methyl can be enumerated The good cyclopentanone of ethyl ketone, toluene, methyl iso-butyl ketone (MIBK), cyclopentanone, acetone, methyl phenyl ethers anisole etc., preferably dissolubility.These solvents It can be added in arbitrary ratio, can only add one kind, two or more solvents can also shared.Then, by the solution It is coated in a manner of thickness is as uniform as possible on the plastic bases such as PET film, while solvent is removed by heating, while in substrate On place certain time in the case where forming cholesteryl liquid crystal and the temperature conditionss that are orientated with desired pitch.Now, pass through The orientation process such as rubbed or stretched in advance to plastic film before coating, and the orientation of cholesteryl liquid crystal can be made more equal It is even, and the haze value as reflection layer can be reduced.Then, in the case where keeping the state of orientation, with high-pressure sodium lamp etc. Ultraviolet is irradiated, makes orientation immobilization, is derived from each reflection layer for forming optical reflection film of the present utility model.This Place, in the case where have selected the chiral reagent to form right hand helix orientation, resulting reflection layer optionally reflects the right side Rounding polarised light, in the case where have selected the chiral reagent to form left-turn spiral orientation, resulting reflection layer selectivity Ground reflects left circularly polarized light.This phenomenon for optionally reflecting specific circularly polarized light is referred to as selective reflecting, will be selected The wave band for selecting sexual reflex is referred to as selective reflecting region.

As reflection layer used in the optical reflection film that uses in adjustment the utility model to the reflectivity of ordinary light Other method, the method that the thickness for changing reflection layer when making above-mentioned reflection layer can be enumerated.Generally, reflection layer is got over Thickness, reflectivity more improve, but do not reach theoretic maximum reflectivity i.e. more than 50%.Therefore, in order that the utility model In the reflectivity to ordinary light be less than more than 5% 25%, the thickness for preferably making reflection layer is theoretic maximum reflection Below about half of thickness during rate, according to the species etc. of used cholesteryl liquid crystal, chiral reagent, the thickness of each reflection layer Degree is, for example, 0.1 μm~3 μm or so, as long as in addition, each reflection layer can be adjusted to desired to the reflectivity of ordinary light In the range of, then the thickness of each reflection layer can be all identical, can also be different.

The optical reflection film used in the utility model include by the above method making reflection layer PRL-1, PRL-2, The reflection layer of more than 1 in PRL-3.In the case where the half-peak breadth of each reflection layer is wider, by including reflection layer Any 1 layer or 2 layers in PRL-1, PRL-2, PRL-3, it is capable of the major part in covering visible light region, and in each reflection layer In the case that half-peak breadth is narrower, in order to realize the multicolor of reflected polarised light, more preferably stacking reflection layer PRL-1, All 3 reflection layers in PRL-2, PRL-3.For example, in a width of 100nm of half-peak less than 200nm close limit In the case of, optical reflection film includes all 3 reflection layers in reflection layer PRL-1, PRL-2, PRL-3, in addition, in half-peak In the case that a width of 200nm is less than 500nm, optical reflection film includes appointing in reflection layer PRL-1, PRL-2, PRL-3 1 layer or 2 layers of meaning, reflection layer PRL-1, PRL-2, PRL-3 stacking number can be suitably adjusted according to half-peak breadth.In addition, in layer In the case that the center reflection wavelength of folded reflection layer is separated by such as 100nm~300nm or so, set as follows Meter：Reflectance spectrum after stacking in whole visible region, it is preferably moderately overlapping in 400nm~700nm whole wavelength region Such as more than 5%, preferably more than 10%.The method of stacking reflection layer is not particularly limited, for example, can enumerate anti-in light Penetrate and other reflection layers are directly laminated on layer, or be laminated indirectly by the adhesive linkage formed by adhesive, bonding agent Method etc..

The optical reflection film 11b of the present utility model that curve form is made is shown in Fig. 2, is shown in Fig. 3 shown in Fig. 2 One of optical reflection film 11b Rotating fields.Optical reflection film 11a shown in Fig. 3 can be by using by bonding agent or bonding dosage form Into adhesive linkage 10 corresponding with reflection layer PRL-1, PRL-2, PRL-3 reflection layer 7,8,9 respectively be laminated and obtained. As the adhesive used in adhesive linkage 10, the adhesive of acrylic acid series, rubber series can be enumerated, preferably easily adjustment cementability, The acrylic adhesive of confining force etc..In addition, as the bonding agent used in adhesive linkage 10, ultraviolet curing can be enumerated Type resin combination, thermohardening type resin combination and their mixture etc.., can in the case of ultraviolet curing resin To pass through the group in the presence of Photoepolymerizationinitiater initiater for a variety of monomers with acryloyl group or epoxy radicals are mixed Compound irradiates ultraviolet and makes resin solidification to be bonded.In the case of thermohardening type resin combination, can by The composition that a variety of monomers with epoxy radicals mix is heated in the presence of acid catalyst and makes resin solidification to carry out Bonding.Alternatively, it is also possible to by with NCO, melamine compound in the presence of will include with amino, Carboxyl, the various of monomer of hydroxyl, the composition of polymer heat and make them that chemical reaction occur to be solidified and be bonded.It is viscous Connecing the thickness of layer will not substantially have an impact to the transmissivity and reflectivity of resulting optical reflection film, in order in zero load shape Also the curve form of optical reflection film is kept under state, the thickness of adhesive linkage is less than more than 20 μm 100 μm, is preferably more than 20 μm Less than 50 μm left and right are suitable.

In order to which also the curve form of holding optical reflection film, so obtained light of the present utility model are anti-in the non-loaded state It is suitable that the thickness of film, which is penetrated, as less than more than 50 μm 500 μm, and preferably less than more than 50 μm 300 μm Zuo You are suitable.If Less than 50 μm, then according to the area of curved surface, it is difficult to the song for maintaining the optical reflection film under no load condition due to deadweight sometimes Face shape.On the other hand, in the case of more than 500 μm, positive direction of the light relative to film is made as head-up display From oblique incidence when, the deviation of the reflection position of the interface of each layer of stacking becomes big, thus is possible to fully to obtain folded The improvement of shadow phenomenon.

The reflection wavelength of the optical reflection film used in the utility model becomes according to the angle of the light of incidence sometimes Change.For example, in the case of the reflection layer formed by cholesteric liquid crystal layers, center reflection wavelength λ 2 is with from reflection layer Positive direction is gradually tilted and offset to short wavelength side.Now, even if reflection layer PRL-1, PRL-2, PRL-3 are to short wavelength Side is offset, by, on behalf of being reflected, can also suppress display image by the reflection layer with being located at long wavelength side compared with them Color change, but in the case of significantly inclined, can not reflected P RL-3 wave band, the color of display image, particularly red Display become unintelligible, it some times happens that the problem of correct color can not be mirrored.With the whole of the windshield of automobile using In the case that face carries out HUD, when viewing is shown in the image of the co-driver side farthest from driver or upper windscreen, It is likely to occur this phenomenon.In this case, can be improved by being further laminated reflection layer PRL-4, the light is anti- The center reflection wavelength for penetrating layer PRL-4 is more than 700nm below 950nm, is preferably more than 720nm below 900nm, more preferably For more than 730nm below 900nm, more preferably more than 730nm below 850nm, to the ordinary light at center reflection wavelength Reflectivity for less than more than 5% 25%, be preferably less than more than 10% 20%, more preferably less than more than 15% 20%, and And the characteristic with reflection with the polarised light of PRL-1, PRL-2, PRL-3 equidirectional.

The reflection layer PRL-4 used in the utility model in addition to center reflection wavelength is located near infrared range, It is identical with other reflection layer PRL-1, PRL-2, PRL-3.Reflection layer PRL-4 on positive direction in visible region not With reflected waveband, therefore it is transparent, but by the way that reflection layer PRL-4 is tilted, reflected waveband is offset to short wavelength side, from And reflected in visible region.Now, in being set in a manner of being offset to reflection layer PRL-3 reflected waveband Oculo cardiac reflex wavelength, in the case of from oblique viewing, it can also show and positive direction identical color.Therefore, it is right In further include reflection layer PRL-4 flat shape optical reflection film, even if will observation position tilt to it is oblique (for example, With positive direction into about 50 degree), it is likewise, therefore, even if by optical reflection film with positive direction also in the absence of the change of tone Curve form is made, the change of tone is also not present in all faces of curved surface, and then, use the light of such curve form The HUD of reflectance coating can clearly mirror display image in positive direction and incline direction.

The further light of the present utility model that curve form the is made reflection comprising reflection layer PRL-4 is shown in Fig. 4 One of the Rotating fields of the optical reflection film 13b shown in Fig. 4 is shown in film 13b, Fig. 5.In the light of the present utility model shown in Fig. 5 In reflectance coating 13a, the reflection layer 12 as PRL-4 is laminated by adhesive linkage 10 together with other reflection layers 7,8,9.Light Reflecting layer PRL-4 the reflectivity of the ordinary light at center reflection wavelength is preferably set to other reflection layers, particularly PRL-3 is identical, and reflectivity is preferably less than more than 5% 25%, is more preferably less than more than 10% 25%, further preferably It is suitable for less than more than 15% 20% Zuo You.In addition, the direction setting of polarised light is other light reflection being laminated together with Layer PRL-1, PRL-2, PRL-3 with reflection layer PRL-3 are in the same direction, particularly suitable in the same direction.It is laminated reflection layer PRL-4's Order is not particularly limited, and can be configured at arbitrary position in a thickness direction.

The reflection layer PRL-4 used in the utility model has reflected waveband near infrared range, therefore, to daylight Also there is effect of heat insulation.Therefore, by the way that the reflection layer of more than 1 in reflection layer PRL-1, PRL-2, PRL-3 will be included It is used for the windshield of automobile with reflection layer PRL-4 optical reflection film of the present utility model, there can be high visible transmission Rate, while the visuality of HUD projected image can be improved, moreover, moreover it is possible to which the angle for improving HUD display image relies on Property, and using effect of heat insulation can also contribute to suppress vehicle interior temperature rising.Particularly using only reflection layer PRL- 1st, in the case of 1 layer in PRL-2, PRL-3, preferably further it is laminated PRL-4.Pass through reflection layer PRL-1, PRL-2, PRL- Any 1 layer in 3 and reflection layer PRL-4 this 2 layers stacking, can be realized simultaneously with less stacking number multicolor displaying and From the calibration result of visible reflectance caused by near infrared region skew.

In order to efficiently reflected with less stacking number the light of the multi-wavelength from light source and suppress with tilt and The change of reflected waveband caused by caused short wavelength skew, form optical reflection film of the present utility model each reflection layer it is anti- Ejected wave section is preferably wider, is calculated as more than 100nm below 500nm, more preferably more than 150nm below 400nm with half-peak breadth, enters One step is preferably that more than 150nm below 350nm left and right is suitable.When half-peak breadth is less than 100nm, due to being produced with tilting Raw wavelength shift, reflection wavelength can significantly deviate the wavelength of light source, and the effect for improving brightness declines, and moreover, also has Make above-mentioned PRL-4 such because near infrared region skew and caused by visible reflectance inclining of being restricted of calibration result To.In addition, in the state of half-peak breadth to be maintained less than to 100nm, particularly below 50nm, it is difficult to make instead in most cases Penetrate rate decline.On the other hand, when half-peak breadth is more than 500nm, reflectivity declines to a great extent, accordingly, it is difficult to obtain more than 5% it is anti- Rate is penetrated, not preferably.In addition, in the case of using the cholesteryl liquid crystal of identical material for example in each reflection layer, if with each The wider then reflectivity of half-peak breadth of reflection layer reduces, the elevated tendency of reflectivity if half-peak breadth is narrower.Thus, by appropriate The half-peak breadth of each reflection layer is adjusted, can more effectively improve the reflectivity of specific polarization light.It should be noted that this place The half-peak breadth said refers to, by the maximum reflectivity equivalent to reflection layer 50% when long wavelength side wavelength and short wavelength side Wavelength division come out wavelength width.For example, equivalent to maximum reflectivity 50% when the wavelength of short wavelength side be In the case that 450nm, the wavelength of long wavelength side are 550nm, a width of 100nm of half-peak.Equivalent to maximum reflectivity 50% when Wavelength can be by subtracting the flat of the reflectivity beyond selective reflecting region from the maximum reflectivity in selective reflecting region Average (such as 350nm~950nm average value), is thus obtained on the basis of the reflectivity for coming from selective reflecting.Example Such as, it is (anti-in the average value of reflectivity of the value for 30%, beyond selective reflecting rate of the maximum reflectivity in selective reflecting region Penetrate the baseline of rate) be 6% in the case of, equivalent to maximum reflectivity 50% when wavelength refer to show and subtracted from 30% The wavelength of 18% reflectivity obtained from (30-6)/2.

HUD is made and carries out the optical reflection film so obtained is inserted into laminated glass as the windshield of car In the case of display, it some times happens that the image being projected on the glass of in-car side and the image being projected on the glass on the outside of car The problem of so-called ghost image phenomenon (ghost image) being staggered.As the method for this ghost image phenomenon of improvement, such as it is preferably used in light The side of reflectance coating is laminated with method of the retardation element for being referred to as quarter wave plate as the light control film of optical control layer.In Fig. 6 The light control film 20b of the present utility model that curve form is made with this composition is shown, is shown in Fig. 7 shown in Fig. 6 One of Rotating fields of light control film 20b.In the light control film 20a of the present utility model shown in Fig. 7, in optical reflection film Side is laminated with quarter wave plate 23 by adhesive linkage 10 and is used as optical control layer.So-called quarter wave plate is that have to be converted to circularly polarized light The retardation element of the function of linearly polarized light, for example, can by the film that will be formed by makrolon, cyclic olefin polymer so that 1/4 mode that phase difference reaches wavelength carries out simple tension to obtain, or by make the polymerizable liquid crystal of horizontal alignment with Make phase difference reach the 1/4 of wavelength as thickness be orientated to obtain.The quarter wave plate can be used alone, because of wavelength In the case that the deviation of phase difference caused by disperseing is big, it can also use and be referred to as the retardation element of broadband quarter wave plate.It is so-called Broadband quarter wave plate is the retardation element for the wavelength dependency for reducing phase difference, such as can be enumerated with phase co-wavelength Element that scattered 1/2 wave plate and quarter wave plate are laminated in a manner of making mutual slow axis angulation be 60 degree, reduction According to the polycarbonate-based retardation element of lazyness, (Di Ren companies manufacture the wavelength of phase difference：PUREACE WR-S) etc..In addition, The light as head-up display incidence angle relative to quarter wave plate from oblique incidence in the case of, according to retardation element Difference, sometimes phase difference can be changed because of the incident angle of light.In this case, as tighter making phase difference consistent Method, such as can by using the retardation element for the refractive index that have adjusted retardation element suppressing with incidence angle and The change of caused phase difference.As such example, the refractive index of the slow-axis direction in the face by retardation element is set to Nx, when the refractive index in orthogonal with nx direction in face being set into ny, the refractive index of thickness direction being set into nz, following formula (2) It is 0.5~0.8 or so that shown Nz coefficients, which are preferably controlled to 0.3~1.0, more preferably control,.

Nz=(nx-nz)/(nx-ny) (2)

In addition, used phase retardation film slow axis or fast axle relative to the length direction of the quarter wave plate of web-like into 45 In the case of degree, by the way that the quarter wave plate of web-like is laminated with the optical reflection film for being similarly web-like in a manner of volume to volume, it can obtain Slow axis or fast axle relative to the length direction of coiled material into 45 degree of light control film.In addition, for example by with to be laminated in light anti- The opposite side of the quarter wave plate as optical control layer for penetrating the side of film is laminated another quarter wave plate as optical control layer, makes Obtain mutual slow axis or fast axle is orthogonal, optical reflection film can be obtained and clamped by 2 orthogonal quarter wave plates of respective slow axis or fast axle The light control film formed.The light control film of the present utility model that curve form is made with this composition is shown in Fig. 8 One of the Rotating fields of the light control film 24b shown in Fig. 8 is shown in 24b, Fig. 9.Of the present utility model light-operated shown in Fig. 9 It is film-made in 24a, optical reflection film is laminated in a manner of being clamped by 2 adhesive linkages 10 by 2 quarter wave plates 23.From HUD's In the case that the emergent light of image-display units is P polarised lights, in order to which functional glass to be used for the windshield of car, it is necessary to Make quarter wave plate slow axis or fast axle relative to P polarization light into 45 degree.If with the slow axis or fast axle of quarter wave plate relative to web-like The mode of optical reflection film into 0 degree or 90 degree is laminated, then when cutting into desired size, it is necessary to makes the slow of quarter wave plate Axle or fast axle, into 45 degree, therefore can produce substantial amounts of non-serviceable part relative to the length direction of coiled material, cause yield rate Decline.But by as described above using make quarter wave plate slow axis or fast axle relative to coiled material length direction into 45 degree that The laminating method of sample, can be along the parallel or orthogonal direction of the length direction of the light control film with web-like with desired size To be cut, therefore yield rate greatly improves, and can effectively obtain optical film or functional glass.It should be noted that Described P polarization just refers to the light incided in the objects such as optical reflection film, light control film, optical film, functional glass herein Electric light spectrum direction of vibration be included in the plane of incidence in linearly polarized light.

In addition, except the optical reflection film that will be used in the utility model of the quarter wave plate of web-like and web-like is with volume to volume Beyond mode is laminated, reflection layer can also be directly laminated on quarter wave plate.Reflected by being directly laminated light on quarter wave plate Layer, the low reflection layer of haze value can be obtained in the case of without orientation process such as frictions.In this case, from courage The excellent adaptation of steroid type liquid crystal and from the viewpoint of improving to the reflectivity of polarised light, particularly preferred use is by polymerism liquid The quarter wave plate that crystalline substance makes.

As the other method of mitigation ghost image phenomenon, such as it can enumerate to use and further be set in the side of optical reflection film There is method of the light absorbing layer as the light control film of optical control layer.Shown in Figure 10 and curve form is made with this composition Light control film 22b of the present utility model, one of the Rotating fields of light control film 22b shown in Figure 10 is shown in Figure 11. In light control film 22a of the present utility model shown in Figure 11, light absorbs are laminated with by adhesive linkage 10 in the side of optical reflection film Layer 21 is used as optical control layer.Quilt before the light transmitted from reflection layer PRL-1, PRL-2, PRL-3 of stacking reflects on glass Light absorbing layer 21 absorbs, and thus mitigates ghost image phenomenon.Light absorbing method is not particularly limited, such as can enumerate in acrylic acid The method on reflection layer, the method using polarizing coating are coated in resinoid etc. after hybrid pigment.In the windshield of car In the case of using light absorbing layer, the transmissivity due to requiring laminated glass in regulation is more than 70%, therefore, light absorbing layer It with less than more than 70% 90%, more preferably less than more than 75% 85% Zuo You is suitable that transmissivity, which is also,.Will be so in this practicality The light control film that newly stacking quarter wave plate, light absorbing layer form on the new middle reflection layer used is made as the glass that keeps out the wind of car During the laminated glass of glass, used in a manner of making quarter wave plate or light absorbing layer is configured on the outside of car, ghost image can be mitigated and showed As.But in the case where the emergent light from image-display units is P polarization light, in the light that will be used in the utility model During the laminated glass for the windshield that control film is made as car, preferably so that the slow axis of the quarter wave plate of the light control film or fast Quarter wave plate into 45 degree (directions for making the projected image in HUD brighten) and is configured at in-car side by axle relative to P polarization light Mode uses.If mistakenly carrying out the axle configuration of the quarter wave plate, effect of the present utility model can not be given full play to, therefore, Preferred pin configures the actual projection for carrying out image to axle, after confirming to give full play to the axle configuration of effect of the present utility model again Make laminated glass.

Optical reflection film of the present utility model or light control film are laminated by using 2 intermediate coats, this can be obtained The optical film of utility model.The optical film 16b of the present utility model that curve form is made is shown in Figure 12, is shown in Figure 13 One of the Rotating fields of optical film 16b shown in Figure 12.It is anti-that optical film 16a of the present utility model shown in Figure 13 forms light Penetrate film or light control film 14 to be made up of what 2 intermediate coats 15 clamped, optical reflection film 14 is for example equivalent to the optical reflection film shown in Fig. 3 Optical reflection film 13a shown in 11a or Fig. 5, light control film 14 is for example equivalent to shown in light control film 20a, Fig. 9 shown in Fig. 7 Light control film 22a shown in light control film 24a or Figure 11.As intermediate coat, polyvinyl butyral resin system resin can be used Or ethylene-vinyl acetate c system resin (EVA) (PVB).These resins as intermediate film for laminated glasses be it is general, because This preferably, as long as the material of the quality as laminated glass can be obtained according to demand, is not particularly limited.

Mixture ultra-violet absorber, antioxidant, antistatic additive, heat stabilizer, coloring can be properly added in intermediate coat Agent, bonding regulator etc., the intermediate coat for being particularly dispersed with the particulate for absorbing infrared ray are making high performance insulating sandwich glass It is critically important in terms of glass.Absorb infrared ray particulate using Sn, Ti, Zn, Fe, Al, Co, Ce, Cs, In, Ni, Ag, Cu, Pt, Mn, Ta, W, V, Mo metal, oxide, nitride or doped with Sb, F each individually material or comprising in these materials It is at least two kinds of more than the conductive material such as compound ultra micron.It is transparent particularly in visible region Tin-doped indium oxide (ITO), antimony-doped tin oxide (ATO), fluorine-doped tin oxide are as for building of the special requirement transparency Or in the case of the window of automobile using particularly preferably.The particle diameter of the particulate for the absorption infrared ray being scattered in intermediate coat is preferably set to Less than 0.2 μm.If the size, then it can suppress the scattering of the light in visible region and infrared ray can be absorbed, will not produce Fog degree, can ensure that electric wave transmittance and the transparency, while maintain the cementability equal with being not added with the intermediate coat of particulate, transparent The physical property such as property, durability, furthermore it is possible to be carried out by the operation on common sandwich glass production line at laminated glass Reason.It should be noted that in the case where intermediate coat uses PVB, in order to which the moisture content of intermediate coat is remained most preferably, in constant temperature Interlayer processing is carried out in the room of constant humidity.In addition, intermediate coat can use the film that one portion coloured, be folded with and have The film of the layer of sound insulation function, in order to mitigate the ghost image phenomenon (ghost image) in HUD there is inclined film (wedge shape) etc. on thickness.

The method that optical reflection film or light control film are laminated is not particularly limited using intermediate coat, such as use can be enumerated Nip rolls is by crimping the method for being laminated intermediate coat, optical reflection film or light control film, intermediate coat simultaneously.When being laminated, In the case where roll can heat, can also heat while crimping.In addition, in the adaptation of intermediate coat and optical reflection film In the case of difference, it is laminated again after can also being surface-treated beforehand through sided corona treatment, corona treatment etc..

By the way that each layer being laminated in so obtained optical reflection film, light control film or optical film is protected in the non-loaded state Hold as curve form, the optical reflection film of curve form of the present utility model, the light control film of curve form or curved surface can be obtained The optical film of shape.In order to easily with windshield as have curve form base material be bonded, the degree of curved surface preferably has There is the radius of curvature same with object base material, the radius of curvature of optical reflection film, light control film or optical film is more than 0.5m 20m Below, it is suitable to be more preferably more than 1m below 15m, more preferably more than 3m below 10m left and right.Curve form is made Method be not particularly limited, such as following methods etc. can be enumerated：The layer that each reflection layer of flat shape is laminated Stack is wound on the roller with the diameter for reaching desired radius of curvature, at 25 DEG C~150 DEG C, preferably 30 DEG C~100 DEG C Drying process 0.5 hour~120 hours, preferably 1 hour~72 hours or so under the constant temperature of left and right.Wind the straight of the roller of layered product Footpath is not particularly limited, and in order to which the radius of curvature of optical reflection film, light control film or optical film is adjusted into above range, is preferably 25.4mm (1 inch) above 508mm (20 inches) below, more preferably 25.4mm (1 inch) above 228.6mm (9 inches) with Lower left and right.In addition, radius of curvature will not only consider the core diameter of roller, thickness, flexibility, the glass of layered product are also considered Change the various key elements such as transition temperature, modulus of elasticity suitably to adjust.So, also can be by layer in the state of zero load Folded each reflection layer remains curve form.It should be noted that on the direction for bending reflection layer, in order to show The above-mentioned effect of the present utility model as head-up display, set according to the mode protruding outside of car when laminated glass is made Meter.

By the way that by optical reflection film of the present utility model, light control film or optical film and glass combination, this practicality can be obtained New functional glass.As the method that optical reflection film of the present utility model, light control film or optical film are fitted in glass, Can be by both sides coating adhesive or bonding agent, being bonded in the one side of the optical reflection film, light control film or optical film or then Glass plate and obtain.Adhesive, bonding agent are not particularly limited, but in the case where to be peeled off sometimes afterwards, to add again The excellent cohesive of work is advisable, such as preferred silicone adhesive, acrylic adhesive etc..

In the case of using optical film of the present utility model, the optical film is configured between 2 glass plates, in high temperature height Crimped, be configured with the functional glass of the present utility model of optical film in laminated glass thus, it is possible to obtain.Figure One of the functional glass of curve form of the present utility model is shown in 14.Functional glass 18 shown in Figure 14 formed by 2 glass 17 clamp above-mentioned optical film 16b composition.Now, it is clamped with the optical film 16a of optical reflection film or light control film 14 Intermediate coat 15 also have as the adhesive of adaptation or the work(of bonding agent for being used to keep bend glass 17 and optical reflection film Energy.

One of method using above-mentioned optical film 16b making functional glass of the present utility model is carried out specifically It is bright.First, 2 bend glasses 17 are prepared.In the feelings using functional glass as the laminated glass of the windshield of automobile Under condition, the soda-lime glass made by float glass process is used.Glass can be glass that is transparent or being coloured to green etc., Be not particularly limited, preferably the clear glass with high-transmission rate, such clear glass generally with more than 90% it is visible Light transmission.The glass of curve form can for example be obtained as below：Glass plate is heated to more than 650 DEG C, then by using Compacting that mould is carried out, using bending from recurrence etc. 2 glass plates are shaped as identical curve form, then by glass Cooling.On the thickness of glass plate, usually using about 2mmt thickness, according to the light-weighted requirement of glass, also may be used in recent years To use the glass plate slightly thinner than the thickness.Song of the radius of curvature of 2 bend glasses 17 preferably with clamped optical film 16b Rate radius is roughly the same, so as to will be optical film overlapped along the curved surface of glass.By 1 curved surface among 2 bend glasses Glass 17 is horizontal positioned, in overlapping optical film 16b thereon, and then another bend glass 17 is placed thereon.Or can also For following methods：On 1 bend glass 17 successively overlapping intermediate coat 15, optical reflection film of the present utility model or light control film, Intermediate coat 15, finally place another bend glass 17.Now, in the case of using light control film of the present utility model, with The mode for making the quarter wave plate as optical control layer, light absorbing layer be located on the outside of car is configured.Then, will be from using cutter Optical film that the edge of glass exposes, intermediate coat, optical reflection film cut-out, remove.Then, while glass to being laminated into sandwich-like Existing air is de-gassed between glass, intermediate coat, optical reflection film or light control film, while the temperature from 80 DEG C is heated to 100 DEG C, carry out pre-glued.There is the following two kinds to the method that air is de-gassed：Wrapped up using the rubber bag formed by heat resistant rubber etc. The sandwich of glass/intermediate coat/optical reflection film or light control film/intermediate coat/glass and the pocket type method carried out；And use rubber The end of ring only cover glass and the ring type method sealed, can using any method., will be from rubber after pre-glued terminates Glass/intermediate coat/the optical reflection film or the sandwich of light control film/intermediate coat/glass that are taken out in poly-bag have removed rubber ring Sandwich be put into autoclave, in 10kg/cm²~15kg/cm²Heated under pressure to 120 DEG C~150 DEG C, in the condition Lower heating, pressurized treatments 20 minutes~40 minutes.After processing, less than 50 DEG C are cooled to, then pressure relief, are taken from autoclave Go out the work(for the curve form of the present utility model being made up of glass/intermediate coat/optical reflection film or light control film/intermediate coat/glass Can property glass.

The functional glass of so obtained curve form of the present utility model may be used as general-utility car, kart, Light-duty vehicle etc. and large-scale special automobile, the windshield with curve form, side window glass, the rear window of small-sized special automobile Glass, skylight glass.In addition it is also possible to as rail truck, ship, aircraft window, be also used as building materials use and it is industrial Window material.As the form used, it can be laminated or be bonded to use with the component with uv blocking, dimming function.

In addition, by the way that functional glass 18 of the present utility model to be replaced into Fig. 1 windshield 4 or by this practicality New optical reflection film or light control film is pasted in the car inner glass of windshield, can obtain of the present utility model look squarely Display (HUD).In the case where reflection layer is formed by cholesteric liquid crystal layers, by from the image-display units 2 in Figure 15 Linearly polarized light or circularly polarized light are emitted, effect of the present utility model can be obtained, can particularly in the case of circularly polarized light Obtain higher reflectivity.Unit is emitted as circularly polarized light, specifically, as shown in figure 15, right from image-display units 2 The light that the functional glass of the present utility model 18 that reflection layer is formed by cholesteric liquid crystal layers is emitted is the situation of linearly polarized light Under, quarter wave plate 19 is configured between image-display units 2 and speculum 3 or between speculum 3 and functional glass 18, Or between reflection layer and the intermediate coat of in-car side, and then, make the fast axle or the polarization of slow axis and linearly polarized light of quarter wave plate 19 Axle aligns, the circularly polarized light to form the circularly polarized light equidirectional with being reflected as the cholesteric liquid crystal layers of reflection layer, Thus, become circularly polarized light before functional glass 18 of the present utility model is reached from the light that image-display units 2 are emitted, lead to Cross and reflected by the cholesteric liquid crystal layers in functional glass and reach observer 1.

Effect of the present utility model is not limited to above-mentioned composition.For example, using as the quarter wave plate of optical control layer and this practicality The light control film of the present utility model that new reflection layer is laminated is so that quarter wave plate is located at in-car side and makes quarter wave plate Slow axis or fast axle carried out relative to the P polarization light of projection into the mode in 45 degree (directions for making the projected image in HUD brighten) Configure to use, make functional glass of the present utility model.Then, it is P polarization to make the emergent light from image-display units Light, and then it is nearby incided in functional glass of the present utility model and is projected with Brewster's angle, it is now in-car Reflection at the glass of side is greatly reduced, and the light of transmission becomes circularly polarized light by quarter wave plate and reflected by reflection layer, then leads to Cross quarter wave plate and become P polarization light, so as to project bright image to observer.This practicality is used in above-mentioned composition In the case of new functional glass, it can significantly mitigate ghost image phenomenon caused by viewing HUD projected image.In addition, Projected image is watched by wearing polarized sunglasses, the visual high state of projected image can be kept, and can be made Ghost image phenomenon substantially disappears.Common HUD systems utilize S-polarization light because the reflectivity of P polarization light is low.Further, since Road surface is reflected into S-polarization light, thus the polarization axle of polarized sunglasses is designed in a manner of it can absorb S-polarization light 's.Therefore, when wearing polarized sunglasses to watch common HUD projected image, the visuality of projected image extremely reduces. On the other hand, the reflectivity that improves P polarization light is made as described above by using light control film of the present utility model HUD, the HUD that make use of P polarization light, can obtain improve HUD projected image visuality, mitigate ghost image phenomenon and When wearing polarized sunglasses, the visuality of projected image is also high, can substantially eliminate the so extremely excellent effect of ghost image phenomenon Fruit.

In addition, in the optical reflection film in functional glass of the present utility model also comprising reflection near infrared range In the case of reflection layer PRL-4, HUD dependence of angle can be eliminated, even if observer's windshield from incline direction, Because PRL-4 makes red area skew of the reflected waveband near infrared range to visible ray, therefore can also be seen that and front Direction identical display color.In addition, reflection layer PRL-4 also has effect of heat insulation, therefore can also contribute to suppress by day The rising of vehicle interior temperature caused by light incidence.

To be laminated on the outside of the car of reflection layer quarter wave plate as configuring light of the present utility model in a manner of optical control layer In the case of controlling film, linearly polarized light is converted to by quarter wave plate by the circularly polarized light after reflection layer.Now, adjust and become Change quarter wave plate slow axis or fast axle so that linearly polarized light becomes P polarization light, and then, adjustment light path is so that glass on the outside of directive car The incidence angle of glass is changed into Brewster's angle or the approximate angle, thus, it is possible to which the reflectivity at car outside glass is greatly reduced, because This ghost image phenomenon is improved.Now, 1/4 ripple of the configuration as optical control layer between the intermediate coat of reflection layer and in-car side In the case that piece is as the means for making incident light turn into circularly polarized light, forms reflection layer and be made up of what 2 quarter wave plates clamped. This is also an embodiment of light control film of the present utility model.Now, preferably with the orthogonal side of the slow axis of 2 quarter wave plates Formula is configured, it is further preferred that so that the slow axis of 2 quarter wave plates is orthogonal and P polarization light relative to incidence is into 45 degree of side Formula is configured.By being configured so that, for example, when make the light of projection for P polarization light and near Brewster angle to this reality During with new laminated glass incidence, the reflection at the glass of in-car side is greatly decreased, and leads to through the light after the glass of in-car side Cross quarter wave plate to become circularly polarized light and reflected by reflection layer, then P polarization light is become by quarter wave plate, so as to The image bright to observer's projection.In addition, it is inclined by the quarter wave plate on the outside of car to become P by the light after reflection layer Shake light, with in-car side similarly, since near Brewster angle, it is thus possible to the reflection at the glass on the outside of car is greatly decreased. This can improve on the outside of the in-car side of laminated glass, car respectively caused by ghost image phenomenon, it is possible to increase the image of projection can Depending on property, therefore particularly preferably.By making observed light be circularly polarized light or P polarization light as described above, even if wearing polarisation too Positive mirror can also prevent that projected image is dimmed, therefore preferably, more preferably P polarization light.

In light control film of the present utility model, in the case where using light absorbing layer as optical control layer, light absorbing layer is matched somebody with somebody It is placed on the outside of the car of reflection layer, thus by the light absorbing layer is absorbed from the incidence of in-car side and by the light after reflection layer, because This will not be by the glass-reflected on the outside of car or only minimal amount of reflection, therefore can improve ghost image phenomenon.It should be noted that Light absorbing layer and the quarter wave plate being laminated on above-mentioned reflection layer can also be shared, for example, passing through quarter wave plate to absorb Become the linearly polarized light of P polarization light, make the absorption axiss of polarizer consistent with the polarization axle of P polarization light, light absorbing layer is configured at The inner side of glass on the outside of the car of quarter wave plate and on the outside of car, thus, it is possible to further mitigate ghost image phenomenon.Or use quarter wave plate Further light is set to inhale with the composition of light absorbing layer clamping optical reflection film or in the side of the light control film clamped by quarter wave plate The composition of layer and a mode of light control film of the present utility model are received, by so that the light absorbing layer position of these light control films Mode on the outside of car is configured to make laminated glass and HUD, utilizes above-mentioned P polarization incident near Brewster's angle Ghost image phenomenon improvement caused by light and as caused by light absorbing layer transmitted light assimilation effect, can further mitigate folded Shadow phenomenon.

As long as the image-display units used in HUD of the present utility model can before functional glass is eventually arrived at shape Into desired polarised light, then it is not particularly limited, liquid crystal display device (LCD), organic el display etc. can be enumerated.Scheming In the case of being liquid crystal display device as display device, emergent light usually becomes linearly polarized light, therefore, can directly use, or Person sets quarter wave plate 19 and is converted to circularly polarized light as shown in Figure 15.Or in the case of an automobile, can also be in such as instrument As dial plate optical emission exit configuration polarizer, circular polarizing disk, quarter wave plate and be adjusted to optimal polarization light.In organic EL feelings Under condition, polarizer is configured between quarter wave plate 19 and image-display units 2.Or in the same manner as above-mentioned liquid crystal display Optical emission exit configure polarizer, circular polarizing disk, 1/4 wave plate and be adjusted to optimal polarization light.In addition, used light Source is it is not also specifically limited, can be LASER Light Source, LED light source etc..By the luminescent spectrum with these light sources accordingly at this Center reflection wavelength is set in the reflection layer used in utility model, display image can be projected out more effectively and brightly.

Then, the manufacture method of the optical reflection film of the curve form in the utility model is illustrated.The utility model The manufacture method of optical reflection film of curve form there are following processes：The process for forming layered product, the laminate layers are laminated with State reflection layer more than at least two, reflection layer more than above-mentioned at least two includes above-mentioned reflection layer PRL-1, above-mentioned light The reflection layer of more than 1 in reflecting layer PRL-2 and above-mentioned reflection layer PRL-3, and it is anti-with mutually different center Ejected wave is grown；With the process that the layered product is deformed into curve form.It is deformed into by the layered product in the process of curve form, will The layered product is wound on roller, and processing is then dried.Now, in order to which resulting optical reflection film is easily and uniform Ground is fitted on the such base material with curve form of windshield, and the diameter of used roller is so that desired light reflects The radius of curvature of film is more than 0.5m below 20m, more preferably more than 1m below 15m, more preferably more than 3m below 10m The mode of left and right is suitably adjusted.In order to obtain having the optical reflection film of this radius of curvature, the diameter of used roller is excellent Elect as 25.4mm (1 inch) above 508mm (20 inches) below, more preferably 25.4mm (1 inch) above 228.6mm (9 English It is very little) below left and right be suitable.In addition, the radius of curvature of desired optical reflection film will not only consider the straight of used roller Footpath, will also consider the various key elements such as the thickness of layered product, flexibility, glass transition temperature, modulus of elasticity suitably to adjust. In addition, in order that be wound into the layered product deformed on roller remains curved surface corresponding with the diameter of roller in the state of zero load Shape, carried out 0.5 hour~120 hours, preferably 1 hour under 25 DEG C~150 DEG C, preferably 30 DEG C~100 DEG C or so of constant temperature Drying process in~72 hours or so.So, in the manufacture of the optical reflection film of curve form of the present utility model, the utility model Optical reflection film be provided with curve form in advance, it is thus possible to easily carry out laminated glass processing, for example with windshield this The stacking of the bend glass of sample.In addition, optical reflection film of the present utility model has the shape along the curved surface of bend glass, thus When using optical reflection film of the present utility model to manufacture the laminated glass of curve form, it is not necessary to by from the edge of bend glass The optical reflection film that portion exposes redundance cut-out, excision etc., as a result, the loss as film can also be reduced.

Embodiment

Hereinafter, the utility model is illustrated by embodiment in detail.In embodiment, part represents parts by weight.

The preparation of coating fluid (liquid-crystal composition)

Coating fluid (R1), (R2), (R3), (R4) of the composition shown in table 1 below and 2 are prepared respectively.

The composition table of coating fluid (R1)

【Table 1】

Table 1：The composition table of coating fluid (R1)

Then, in addition to the amount that the formula ratio of the chiral reagent of coating fluid (R1) is changed to shown in following table, according to The same formula of coating fluid (R1) is prepared for coating fluid (R2), (R3), (R4).

【Table 2】

Table 2：Each coating fluid (R2)~(R4) chiral reagent formula ratio

[embodiment 1]

Using prepared coating fluid (R1), (R2), (R3), reflection layer PRL-1, light are made respectively as steps described below Reflecting layer PRL-2, reflection layer PRL-3, then they are laminated and produces optical reflection film of the present utility model.As plastics Substrate, the method described in the embodiment 1 using Japanese Unexamined Patent Publication 2002-90743 publications has been used in advance to base coat Surface carried out friction treatment Japan twist flax fibers and weave company manufacture PET film (50 μm of trade name A4100, thickness) long paper.It is following The spectrophotometer MPC-3100 that shown dichroism manufactures by using company of Shimadzu Seisakusho Ltd. determines reflectance spectrum to enter Row evaluation.

(1) the reverse coating machine of intaglio plate contact (manufacture of Kang Jing Jing Ji companies) is used, at room temperature by each coating solution To the friction treatment face of each PET film so that the thickness of each reflection layer each obtained after drying is 0.5 μm.

(2) each coated film is heated 5 minutes at 150 DEG C, while removing solvent, forms cholesteryl liquid crystal phase.Then, The UV carried out 5 seconds~10 seconds with 120W power output with high-pressure sodium lamp irradiates, and cholesteryl liquid crystal is mutually fixed, on a pet film Reflection layer is obtained.

(3) using the acrylic adhesive that thickness is 30 μm, (Soken Chemical Company manufactures, acrylic adhesives SK- DYNE906), by reflection layer PRL-1 (using coating fluid (R1)) and reflection layer being made in (1)~(2), in PET film PRL-2 (using coating fluid (R2)) reflection layer side is stacked on one another.

(4) reflection layer PRL-2 PET film is peeled off.

(5) use and (3) identical acrylic adhesive will equally making, the light in PET film is anti-with (1)~(2) A layer PRL-3 (using coating fluid (R3)) reflection layer side is penetrated with having peeled off PET films in the reflection layer PRL-2 in (4) Reflection layer side is stacked on one another, and obtains the stacked film of flat shape for having PET film in two outsides.

(6) stacked film of about 10m (5) is wound on the plastic core of 76.2mm (3 inches), with the state of volume 50 DEG C thermostat in place 24 hours.

(7) finally, stacked film is released from volume, after cutting into 15cm square, by the reflection layer PRL- after stacking The PET film in 1 and PRL-3 two outsides is peeled off.

So, obtained according to reflection layer PRL-1, reflection layer PRL-2, reflection layer PRL-3 order stacking and Into, the thickness of reflection layer and adhesive linkage formed by 3 layers, each add up to 61.5 μm of curve form of the present utility model Optical reflection film.The radius of curvature of resulting optical reflection film is 3m.In addition, Figure 16 is to form putting down before being changed into curve form During single each reflection layer PRL-1, PRL-2, PRL-3, PRL-4 of face shape to the relation of wavelength and reflectivity map and Obtained figure.From Figure 16 and Table 3 below, reflection layer PRL-1, PRL-2, PRL-3 center reflection wavelength are respectively 450nm (a width of 123nm of half-peak), 540nm (a width of 131nm of half-peak), 650nm (a width of 148nm of half-peak), also, reflection layer Reflectivity at PRL-1, PRL-2, PRL-3 center reflection wavelength is respectively about 20%, about 21%, about 22%.

【Table 3】

Table 3：The reflection characteristic of each reflection layer in Figure 16

* the baseline of the reflectivity of each reflection layer：About 7%

Because resulting optical reflection film of the present utility model is curve form, thus transmitted using spectrophotometer Rate and the measure of reflectivity are impossible in specification.Therefore, the flat shape that is obtained by above-mentioned (1)~(5) is cut out A part for stacked film peels off the PET film positioned at two outsides of the sample as sample for evaluation.So, planar shaped is produced The optical reflection film of shape, transmissivity and reflectivity using spectrophotometric determination.The front side of the optical reflection film of the flat shape The average transmittance of upward visible ray is about 77%, and the reflectivity near the high 550nm of usual visibility is about 23%.It is another Aspect, when watching the optical reflection film of the flat shape from the position that 50 ° are tilted from front, red area (near 650nm) Transmissivity rise, be changed into the tone different from positive direction.

Using the transparent polyvinyl butyral resin intermediate coat that 2 thickness are 0.38mm, by above-mentioned light of the present utility model Reflectance coating is configured between polyvinyl butyral film, then, is carried out pressurization crimping using laminating machine, be resulting in this practicality New optical film.The radius of curvature of resulting optical film is 10m.

Match somebody with somebody between the transparent bend glass that 2 every thickness are 2mm, size is 16cm square, radius of curvature is 10m Above-mentioned optical film is put, then, is pressurizeed, heated, resulting in functional glass of the present utility model.First, transparent Bend glass on overlapping above-mentioned optical film of the present utility model, transparent bend glass.Now, optical film can be along curved surface Glass is equably overlapping.Wrapped up with rubber bag, deaerate 10 minutes, carried out pre- in 90 DEG C of autoclave is heated to Bonding.After being cooled to room temperature, taken out from rubber bag, again in 135 DEG C, 12kg/cm in autoclave²High pressure under enter The row heating of 30 minutes, pressurization, produce the good song of the present utility model inserted with optical film of the present utility model of outward appearance The functional glass of face shape.Resulting functional glass of the present utility model does not have unnecessary film, and is uniform.

Head-up display has been made according to the configuration shown in Fig. 6.It should be noted that as image-display units 2, use Liquid crystal projection apparatus, as quarter wave plate 19, using broadband quarter wave plate, (Di Ren companies manufacture：PUREACE WR-S), speculum 3 makes With commercially available mirror, functional glass 18 uses the laminated glass of above-mentioned middle making.Then, from liquid crystal projection apparatus to work(in darkroom Energy property glass projected image, as a result the display image of positive direction is extremely bright and is clearly projected.On the other hand, make Observation position tilts to incline direction (tilting about 50 degree from positive direction), and as a result the red display of display image is slightly unintelligible.

[embodiment 2]

In addition to using coating fluid (R4), it is anti-that light has been obtained on a pet film using preparation method similarly to Example 1 Penetrate a layer PRL-4 (using coating fluid (R4)).The optical reflection film obtained by (1) of embodiment 1~(5) is located at reflection layer The PET film of PRL-3 sides is peeled off, and then uses acrylic adhesive by the reflection layer of the reflection layer PRL-4 in PET film Side is stacked on one another with the reflection layer side for having peeled off PET film in reflection layer PRL-3, thus, has obtained having in two outsides PET film, be further laminated with the stacked film of reflection layer PRL-4 flat shape.Then, will about 10m stacked film windings Onto the plastic core of 76.2mm (3 inches), placed 48 hours in 35 DEG C of thermostat with the state of volume.Stacking is released from volume Film, after cutting into 15cm square, by the PET film in the reflection layer PRL-1 after stacking and reflection layer PRL-4 two outsides Peel off.So, obtained according to reflection layer PRL-1, reflection layer PRL-2, reflection layer PRL-3, reflection layer PRL-4 The thickness of reflection layer and adhesive linkage that order is laminated, being formed by 4 layers, each adds up to 92 μm of song of the present utility model The optical reflection film of face shape.The radius of curvature of resulting optical reflection film is 3m.In addition, from Figure 16 and table 3, curved surface is made The reflection layer PRL-4 of flat shape before shape center reflection wavelength is 800nm (a width of 178nm of half-peak), also, light is anti- The reflectivity penetrated at layer PRL-4 center reflection wavelength is about 20%.

The flat shape for being further laminated with reflection layer PRL-4 is produced using preparation method similarly to Example 1 Optical reflection film, transmissivity and reflectivity using spectrophotometric determination.The positive direction of the optical reflection film of the flat shape Visible ray average transmittance be that reflectivity about near 77%, 550nm is about 22%.In addition, even if tilted from from front The optical reflection film of the flat shape is observed in 50 ° of position, also in the absence of red area transmissivity change, be with positive direction Same tone.In addition, even if the optical reflection film of the curve form of the present utility model obtained by from front, in curved surface Also the change of tone is not observed on all faces.

Then, using preparation method similarly to Example 1, it is held in 2 polyvinyl butyral resin intermediate coats, thus Optical film of the present utility model is obtained.The radius of curvature of resulting optical film is 10m.And then using similarly to Example 1 Preparation method, clamp optical film of the present utility model for 10m transparent bend glass using 2 radius of curvature and folder be made Layer glass, resulting in the functional glass of curve form of the present utility model.Resulting feature of the present utility model Glass does not have unnecessary film, and is uniform.Then, HUD is made using with the same preparation method of embodiment 1, carried out same The evaluation of sample, as a result the display image of positive direction is extremely bright and clear.In addition, even if observation position is tilted into inclination side To (tilting about 50 degree from positive direction), the color of display image does not also change, same with positive direction clear.

[embodiment 3]

The light of the stacked film of what is obtained be further laminated with embodiment 2 reflection layer PRL-4 flat shape is reflected Layer PRL-4 PET film is peeled off, and the reflection layer side adhesive fitting for having peeled off the PET film in reflection layer PRL-4 is made For broadband quarter wave plate (the Di Ren companies manufacture of optical control layer：PUREACE WR-S), produce the light control film of flat shape. Then, the about 10m film is wound on the plastic core of 76.2mm (3 inches), put with the state of volume in 80 DEG C of thermostat Put 3 hours.Stacked film is released from volume, after cutting into 15cm square, by two outsides of the reflection layer PRL-1 after stacking PET film peel off.So, reflection layer PRL-1~reflection layer PRL-4 and the quarter wave plate layer as optical control layer have been obtained The light control film of the folded curve form of the present utility model formed.The radius of curvature of resulting light control film is 2m.Using with The same preparation method of embodiment 1, the light control film is held in 2 polyvinyl butyral resin intermediate coats, resulting in Optical film of the present utility model.The radius of curvature of resulting optical film is 9m.And then utilize making similarly to Example 1 Method, using the transparent bend glass that 2 radius of curvature are 9m, so that 1 quarter wave plate is located at the side of the glass side on the outside of car Formula clamps optical film of the present utility model and laminated glass is made, and resulting in the feature of curve form of the present utility model Glass.Resulting functional glass of the present utility model does not have unnecessary film, and is uniform.Then, using with embodiment 1 Same preparation method makes HUD, has carried out same evaluation, and as a result the display image of positive direction is extremely bright and clear. In addition, even if observation position is tilted into incline direction (tilting about 50 degree from positive direction), the color of display image does not have yet Change, it is same with positive direction clear.And then so that display image becomes to become clear and makes the slow axis of quarter wave plate into 45 degree of side Formula is configured, and display image is observed with the naked eye, as a result ghost image phenomenon compared with Examples 1 and 2 mitigate, display image depending on entering depending on property One step improves.Then, commercially available polarized sunglasses (absorption axiss are the direction with ground level) are worn to observe the display image, As a result ghost image significantly mitigates, and can be clearly seen that display image.

[embodiment 4]

The reflection layer PRL-1 sides of the light control film of the flat shape obtained in embodiment 3, using same with embodiment 3 The method of sample is further bonded the broadband quarter wave plate as optical control layer used in embodiment 3 so that each 1/4 wave plate it is slow Axle orthogonally configures, and has obtained being clamped the photocontrol for the curve form of the present utility model that optical reflection film forms with 2 quarter wave plates Film.The radius of curvature of resulting light control film is 1m.It is by the operation same with the preparation method of embodiment 1, this is light-operated Film is held in 2 polyvinyl butyral resin intermediate coats, resulting in optical film of the present utility model.Resulting optics The radius of curvature of film is 7m.And then the use of 2 radius of curvature is 7m's by the operation same with the preparation method of embodiment 1 Transparent bend glass clamps optical film of the present utility model and laminated glass is made, and resulting in curved surface of the present utility model The functional glass of shape.Resulting functional glass of the present utility model does not have unnecessary film, and is uniform.Then, As image-display units, using liquid crystal projection apparatus same as Example 1, the quarter wave plate 19 in Fig. 6 is removed, in speculum 3 Polarizer is arranged between functional glass 18, and (Polatechno companies manufacture：SHC-13U), make to enter to functional glass 18 The light penetrated is P polarization light, in addition, HUD of the present utility model is produced using preparation method similarly to Example 1.Connect , the image that the slow axis of the retardation element in functional glass of the present utility model is configured to make projection is become bright Position (relative to incident P polarization light into about 45 degree), and then, from the incident angle of P polarization light is made from work(of the present utility model The position that the positive direction of energy property glass tilts about 60 degree is projected, and display image is observed with the naked eye, as a result projects to glass On positive direction display image it is extremely bright and clear.In addition, the reflected light of projection is P polarization light.Then, position will be observed Put and tilt to incline direction (tilting about 50 degree from positive direction), as a result the color of display image does not change, with positive direction It is same clear.In addition, ghost image phenomenon mitigates compared with embodiment 1~3, the visuality of display image further improves.Then, city is worn The polarized sunglasses (absorption axiss for direction) with ground level sold observe the display image, and as a result ghost image significantly mitigates, energy Enough it can be clearly seen that display image.

[embodiment 5]

Instead of reflection layer PRL-1~PRL-4, by reflection layer PRL-1, reflection layer PRL-3, reflection layer PRL-4 This 3 layers are laminated, it is 100 DEG C, 1 hour to make treatment conditions in thermostat, in addition, using similarly to Example 2 Preparation method has obtained the optical reflection film of curve form of the present utility model.The radius of curvature of resulting optical reflection film is 3m. In addition, from Figure 17 and following tables 4, reflection layer PRL-1, PRL-3, PRL- of the flat shape before curve form is made 4 center reflection wavelength is respectively 481nm (a width of 192nm of half-peak), 613nm (a width of 246nm of half-peak), 843nm (half-peak breadths For 242nm), also, the reflectivity at reflection layer PRL-1, PRL3, PRL-4 center reflection wavelength respectively about 16%, About 16%, about 18%.

【Table 4】

Table 4：The reflection characteristic of each reflection layer in Figure 17

* the baseline of the reflectivity of each reflection layer：About 10%

The optical reflection film of flat shape is made using preparation method similarly to Example 1, utilizes spectrophotometric determination Transmissivity and reflectivity.The visible ray average transmittance of the positive direction of the optical reflection film of the flat shape is about 82%, Reflectivity near 550nm is about 18%.In addition, even if the light of the flat shape is anti-from 50 ° of position is tilted from front Penetrate film, also in the absence of red area transmissivity change, be same tone with positive direction.In addition, even if seen from front The optical reflection film of curve form of the present utility model obtained by examining, also do not observe the change of tone on all faces of curved surface Change.

In addition, by the reflection layer PRL-1 shown in above-mentioned table 4, reflection layer PRL-3, this 3 layers of reflection layer PRL-4 On the stacked film for the flat shape being laminated, except make the treatment conditions in thermostat be 50 DEG C, 24 hours in addition to, using with Quarter wave plate (Kaneka manufacture of the same preparation method stacking of embodiment 3 as optical control layer：PCR-140), this has been obtained The light control film of the curve form of utility model.The radius of curvature of resulting light control film is 2m.Using similarly to Example 1 Preparation method the light control film is held in 2 polyvinyl butyral resin intermediate coats, resulting in of the present utility model Optical film.The radius of curvature of resulting optical film is 9m.And then using preparation method similarly to Example 1, use 2 Radius of curvature is 9m transparent bend glass, and this reality is clamped in a manner of 1 quarter wave plate is located at the glass side of in-car side Laminated glass is made of new optical film, resulting in the functional glass of curve form of the present utility model.Gained To functional glass of the present utility model there is no unnecessary film, and be uniform.Then, system similarly to Example 4 is utilized Make method and make HUD, display image is observed with the naked eye using method similarly to Example 4, as a result the display figure of positive direction As extremely bright and clear.In addition, even if observation position is tilted into incline direction (tilting about 50 degree from positive direction), display The color of image does not also change, same with positive direction clear.In addition, similarly to Example 4, ghost image phenomenon is compared with embodiment 1 ~3 mitigate, and the visuality of display image further improves.Then, wearing commercially available polarized sunglasses, (absorption axiss are and the surface water Flat direction) display image is observed, ghost image is not as a result almost observed, and ghost image phenomenon compared with Example 4 further subtracts Gently, can be extremely it can be clearly seen that display image.

[embodiment 6]

Instead of reflection layer PRL-1~PRL-4, this 2 layers of reflection layer PRL-2 and PRL-4 are only laminated, is made in thermostat Treatment conditions are 50 DEG C, 12 hours, in addition, have been obtained using preparation method similarly to Example 2 of the present utility model The optical reflection film of curve form.The radius of curvature of resulting optical reflection film is 5m.In addition, from Figure 18 and table 5 below, system Center reflection wavelength into reflection layer PRL-2, PRL-4 of the flat shape before curve form is respectively that (half-peak is a width of by 540nm 158nm), 732nm (a width of 170nm of half-peak), also, the reflectivity at reflection layer PRL-2, PRL-4 center reflection wavelength Respectively about 17%, about 18%.

【Table 5】

Table 5：The reflection characteristic of each reflection layer in Figure 18

Reflection layer	PRL-2	PRL-4
			Maximum reflectivity (%)	16.8	18.1
Center reflection wavelength λ 2 (nm)	540	732
			50% short wavelength side wavelength (nm)	459	647
50% long wavelength side wavelength (nm)	617	817
			Half-peak breadth (nm)	158	170

* the baseline of the reflectivity of each reflection layer：About 10%

The optical reflection film of flat shape is made using preparation method similarly to Example 1, utilizes spectrophotometric determination Transmissivity and reflectivity.The visible ray average transmittance of the positive direction of the optical reflection film of the flat shape is about 82%, Reflectivity near 550nm is about 17%.In addition, even if the light of the flat shape is anti-from 50 ° of position is tilted from front Film is penetrated, the change of the transmissivity of red area is also few, also very slight with the difference of the tone of positive direction.In addition, even if from just The optical reflection film of curve form of the present utility model obtained by the observation of face, the change of tone is also very light on all faces of curved surface It is micro-.

In addition, in the plane for forming the reflection layer PRL-2 shown in above-mentioned table 5, reflection layer PRL-4 this 2 layer stackup On the stacked film of shape, by the use of preparation method stacking similarly to Example 5 as the quarter wave plate of optical control layer, (Kaneka is public Department's manufacture：PCR-140), the light control film of curve form of the present utility model has been obtained.The curvature of resulting light control film half Footpath is 3m.Using preparation method similarly to Example 1, the light control film is held on 2 polyvinyl butyral resin intermediate coats It is interior, it resulting in optical film of the present utility model.The radius of curvature of resulting optical film is 9m.And then using with implementation The same preparation method of example 1, using the transparent bend glass that 2 radius of curvature are 9m, so that 1 quarter wave plate is positioned at in-car The mode of the glass side of side clamps optical film of the present utility model and laminated glass is made, and resulting in song of the present utility model The functional glass of face shape.Resulting functional glass of the present utility model does not have unnecessary film, and is uniform.Connect , make HUD using preparation method similarly to Example 4, display figure is observed with the naked eye using method similarly to Example 4 Picture, as a result the display image of positive direction is bright and clear.In addition, even if observation position is tilted into incline direction (from front Direction tilts about 50 degree), the color of display image does not also change, same with positive direction clear.It is in addition, same with embodiment 4 Sample, ghost image phenomenon mitigate compared with embodiment 1~3, and the visuality of display image further improves.Then, commercially available polarisation is worn too Positive mirror (absorption axiss are the direction with ground level) observes the display image, does not as a result almost observe ghost image, ghost image phenomenon Further mitigate compared with Example 4, can be extremely it can be clearly seen that display image.

[comparative example 1]

The optical reflection film of the flat shape used in embodiment 1 is not wound on plastic core, in addition, using with reality Apply the same operation of example 1 and produce optical reflection film.It is red when observing resulting optical reflection film from 50 ° of position of front inclination The transmissivity in region (near 650nm) rises, and is changed into the tone different from positive direction.Then, using similarly to Example 1 Operation, the optical reflection film is held in 2 polyvinyl butyral resin intermediate coats, resulting in optical film.Now, it is resulting Optical film be also flat, thus radius of curvature can not be determined.And then using preparation method similarly to Example 1, use The transparent bend glass that 2 radius of curvature are 9m, the overlapping above-mentioned optical film first on a transparent bend glass, and then In overlapping another transparent bend glass thereon.Now, for optical film not along the curved surface of glass, a part becomes unnecessary, because This can not make uniform laminated glass.Then, same behaviour is carried out using the optical film of the 17cm square bigger than bend glass Make, by the redundance cut-out of the optical film exposed from the edge part of bend glass, remove.Then, using similarly to Example 1 Operation produce laminated glass.Pass through the additional laminated glass for operating, resulting curve form being made as progress There is no unnecessary film, and be uniform.

Embodiment 1~6 and comparative example 1 are compared, comparative example 1 does not have curved due to optical reflection film or optical film Shape, if therefore uniform laminated glass can not be made without using the size film bigger than bend glass when making laminated glass. On the other hand, in the case of embodiment 1~6, film itself has curve form, thus is easily laminated with bend glass, also can Enough reduce the loss as film.In addition, as shown in embodiment 2,5,6, by being further laminated reflection layer on optical reflection film PRL-4, even if optical reflection film is curve form, it can also obtain without tone variations or tone becoming on all faces of curved surface Change very slight, excellent in workability optical reflection film.

Industrial applicibility

By using optical reflection film of the present utility model and its manufacture method, it is possible to increase have the interlayer glass of curve form The processability of glass etc..In addition, optical reflection film of the present utility model can be while with high visible light transmissivity, effectively only Improve the reflectivity of specific polarization light.Therefore, in the situation for the windshield that optical reflection film of the present utility model is used for automobile Under, laminated glass processing can be efficiently carried out, furthermore it is possible to while legal transmissivity limits value is maintained, is only improved The reflectivity of specific polarization light, thus, it is possible to become clear and clearly mirror the projected image of head-up display, driver is being kept out the wind Any part of glass can see clearly image.

Symbol description

1 observer

2 image-display units

3 speculums

4 windshield

5 light paths

6 display images

7 reflection layer PRL-1

8 reflection layer PRL-2

9 reflection layer PRL-3

10 adhesive linkages

11a optical reflection films

11b optical reflection films

12 reflection layer PRL-4

13a optical reflection films

13b optical reflection films

14 optical reflection films or light control film

15 intermediate coats

16a optical films

16b optical films

17 bend glasses

18 functional glass

19 quarter wave plates

20a light control films

20b light control films

21 light absorbing layers

22a light control films

22b light control films

23 quarter wave plates

24a light control films

24b light control films.

Claims

A kind of 1. optical reflection film of curve form, it is characterised in that

It is laminated with reflection layer more than at least two, and the reflection layer more than at least two includes reflection layer PRL-1, light The reflection layer of more than 1 in reflecting layer PRL-2 and reflection layer PRL-3, and there is mutually different foveal reflex ripple It is long,

The reflection layer PRL-1 has center reflection wavelengths of the 400nm less than 500nm in flat shape, to this The reflectivity of ordinary light at center reflection wavelength is less than more than 5% 25%,

The reflection layer PRL-2 has center reflection wavelengths of the 500nm less than 600nm in flat shape, to this The reflectivity of ordinary light at center reflection wavelength is less than more than 5% 25%,

The reflection layer PRL-3 has center reflection wavelengths of the 600nm less than 700nm in flat shape, to this The reflectivity of ordinary light at center reflection wavelength is less than more than 5% 25%,

Reflection layer more than described at least two of stacking is respectively provided with the characteristic of the polarised light of reflection equidirectional and in nothing Curve form is kept under load condition, and thickness is less than more than 50 μm 500 μm.
2. optical reflection film as claimed in claim 1, it is characterised in that the radius of curvature of the curve form of the optical reflection film is More than 0.5m below 20m.
3. optical reflection film as claimed in claim 1 or 2, it is characterised in that reflection layer more than described at least two includes institute State 2 in reflection layer PRL-1, the reflection layer PRL-2 and the reflection layer PRL-3 or 3 reflection layers.
4. optical reflection film as claimed in claim 1 or 2, it is characterised in that reflection layer more than described at least two includes light Reflecting layer PRL-4, the reflection layer PRL-4 have more than 700nm below 950nm foveal reflex ripple in flat shape Long, the reflectivity to the ordinary light at the center reflection wavelength is less than more than 5% 25%, and with reflection and claim The reflection layer PRL-1's, the reflection layer PRL-2 and the reflection layer PRL-3 equidirectionals described in 1 or 2 is inclined Shake the characteristic of light.
5. optical reflection film as claimed in claim 1 or 2, it is characterised in that a width of more than the 100nm of half-peak of each reflection layer Below 500nm.
6. optical reflection film as claimed in claim 1 or 2, it is characterised in that each reflection layer is that the spiral with immobilization takes To cholesteric liquid crystal layers.
7. a kind of light control film of curve form, it is characterised in that it is laminated with light according to any one of claims 1 to 6 Reflectance coating and at least one of quarter wave plate and light absorbing layer optical control layer.
8. light control film as claimed in claim 7, it is characterised in that the optical control layer is quarter wave plate.
9. light control film as claimed in claim 8, it is characterised in that the optical control layer is 2 quarter wave plates, and the light is anti- Film is penetrated to be laminated in a manner of being clamped by 2 quarter wave plates.
10. light control film as claimed in claim 9, it is characterised in that 2 quarter wave plates are with the mutually orthogonal position of slow axis Put relation stacking.
11. a kind of optical film of curve form, it is by optical reflection film according to any one of claims 1 to 6 or claim 7 Light control film any one of~10 is laminated with intermediate coat.
12. optical film as claimed in claim 11, it is characterised in that the optical reflection film or light control film are with by 2 centres The mode of film clamping is laminated.
13. a kind of functional glass of curve form, it has optical reflection film according to any one of claims 1 to 6, right It is required that any of optical film described in light control film or claim 11 or 12 any one of 7~10.
14. functional glass as claimed in claim 13, it is characterised in that it is made for any one of claim 1~6 Light control film any one of described optical reflection film, claim 7~10 or the light described in claim 11 or 12 Learn the laminated glass that any of film is formed with 2 glass plate clampings.
15. a kind of head-up display, it use optical reflection film according to any one of claims 1 to 6, claim 7~ Described in optical film described in light control film, claim 11 or 12 or claim 13 or 14 any one of 10 Any of functional glass.
16. head-up display as claimed in claim 15, it is characterised in that it, which has, is used to carry out the projection that image is shown Instrument, the circularly polarized light with optical reflection film selective reflecting according to any one of claims 1 to 6 is provided with the projecting apparatus The outgoing unit of the circularly polarized light of equidirectional.
17. head-up display as claimed in claim 15, it is characterised in that it, which has, is used to carry out the projection that image is shown Instrument, the unit of outgoing P polarization light is provided with the projecting apparatus.
18. head-up display as claimed in claim 17, it is characterised in that the light any one of claim 7~10 In optical film described in control film or claim 11 or 12 and the functional glass described in claim 13 or 14, layer Any of optical film and functional glass of quarter wave plate have been folded so that the slow axis of the quarter wave plate is inclined relative to the P of outgoing Light shake into 45 degree of mode laminated configuration.