Light control plate and its production

[Detailed Description of the Invention]

<Field of the Invention> The present invention relates the incidence light of various angle ranges to an optical control board scattered about alternatively and a manufacturing method for the same. <Prior art> As for the transparent body which comprises a plastic and glass conventionally, there was only nothing transparent also to the light from which angle. Then, as what penetrates only the light from a specific angle, The film for Arrangement cut down from the plastic block which stuck the transparent sheet and opaque sheet of the plastic by turns, The relief which makes patterns, such as a lattice and a draft, was provided on the transparent substrate using photosensitive resin, and also what is called a "gobo" that combines a transparent substrate etc. on it was generally used. There are some which are shown in JP,57-189489,A as this gobo. However, the film for Arrangement and gobo of these former had the problem that it is expensive since the manufacturing method is complicated, and membraneous quality did not become uniform. <Problem which an invention tends to solve> This artificer, About the optical control board which has the uniform membraneous quality alternatively scattered about in the incidence light of two or more angle ranges, As a result of examining how to manufacture the optical control board very easily, by using the resin composition which consists of plurality of a compound which has an one or more piece polymerization carbon-carbon double bond into the molecule which has a difference in each refractive index, it found out that the optical control board could be manufactured very easily, and resulted in the present invention. It is a plastic sheet, means >, i.e., the present invention, for solving Problem, and it is an optical control board alternatively scattered about in the incidence light of two or more angle ranges to the sheet. The 1st process that the present invention maintains [ process ] the resin composition which consists of plurality of a compound which has one or more polymerization carbon-carbon double bonds in the molecule which has a difference in each refractive index in the shape of a film, irradiates [ process ] with ultraviolet rays from the 1st direction, and stiffens the constituent, The above-mentioned resin composition is maintained in the shape of a film on the obtained hardened material, and it consists of the 2nd process that irradiates with and stiffens ultraviolet rays from the 2nd direction, and provides the manufacturing method of the optical control board repeating the 2nd process if needed. The compound which has a polymerization carbon-carbon double bond used in the method of the present invention by Incidents is molecule A. It is the monomer or oligomer which contains one or more bases of an acrylyl group, a meta-Acry roll machine, a vinyl group, an allyl group, etc. which can be polymerized inside. For example, polyester acrylate, polyol poly acrylate, Denaturation polyol poly acrylate, poly acrylate of an isocyanuric acid frame, A Mela grass Urgency rate, poly acrylate of a hydantoin frame, poly butadiene acrylate, Polyfunctional acrylate, such as epoxy acrylate and urethane acrylate, Methacrylate corresponding to these acrylate, and tetrahydrofurfuryl acrylate, Ethyl Carpitol acrylate, dicyclopentenyl oxy-ethyl acrylate, Phenyl Carpitol acrylate, nonylphenoxyethyl acrylate, 2-hydroxy 8-Phenoxypropyl acrylate, omega-hydroxy hexanoyloxy ethyl acrylate, Acryloyloxyethyl succinate, acryloyloxyethyl phthalate, Tribromophenoxy ethyl acrylate, isobornyl acrylate, 2-ethylhexyl acrylate, laurylacrylate, 2.2.8.8-tetrafluoropropylacrylate and methacrylate corresponding to these monofunctional acrylate, N-vinyl pyrrolidone, triallyl isocyanurate, Diethylene glycol bisallyl carbonate, Diarylidene penta erythritol, etc. are raised. These compounds are used as a plurality of mixtures. The resin composition used for the present invention has the feature in a plurality of solubility between compounds which constitutes it, and each refractive-index difference, Although compatibility is what the degree on which lights are scattered becomes large, and the ice-cubes invention of the scattered-about incidence light stiffens these resin compositions by ultraviolet rays, and manufactures an optical control board in the combination which is not so good when a refractive-index difference is large, The resin composition is applied on a substrate, or it encloses in a cell to make the shape of a film, and the hardening sheet alternatively scattered about only in the incidence light which makes it harden gradually and makes a specific angle is made, irradiating with ultraviolet rays from it being specific, A resin composition which is still the more nearly same or different on this hardening sheet is made into the shape of a film after this 1st process, It consists of the 2nd process stiffened while irradiating [ another ] with ultraviolet rays from it being specific, and can make further the optical control board alternatively scattered about in the incidence light of two or more sorts of angle ranges by repeating this 2nd process if needed. In repeating the 2nd process, Jin which makes the optical control board alternatively scattered about in the incidence light of eight or more sorts of angle ranges is made by carrying out by changing the direction of irradiation of ultraviolet rays each time. Whenever it repeats, different resin compositions may be used. In the resin composition of the present invention, a photopolymerization initiator is used if needed. He is Ha, for example, benzophenone, as a photopolymerization initiator used if needed, Ben Jill, Michler's ketone, 2-chloro thioxan ton, a 2.4-Diethyl thioxan ton, Benzoin ethyl ether, diethoxy aceto Phenone, Benzyl dimethyl ketal, 2-hydroxy 2-methylpropiohenone, 1-hydroxy cyclohexyl phenyl ketone, etc. are raised. The sheet shaped hardened material generated by adjusting Irradiation conditions shows anisotropy to the long axis and the direction of a short axis of a light source, and only when rotating the direction of a long-sleeved shirt of a light source as an axis, they are scattered about in the light of a specific angle. That is, the field where the generated sheet shaped hardened material differs in a refractive index is considered that total internal reflection of the light which existed in a certain direction where for Arrangement is carried out, and entered into it from the specific angle is carried out, and they are scattered about on the boundary of the field where refractive indices differ. The degree of dispersion and the angle of incidence light scattered about alternatively can be adjusted with the resin composition and irradiation conditions to be used, and the angle of the incidence light on which the hardened sheets are scattered alternatively can be changed by changing the degree of incidence angle of the ultraviolet rays over a hardening sample side especially at the time of hardening. therefore, only accumulating the hardening sheet in which the degrees of ultraviolet-rays incidence angle at the time of hardening differ, even when using the same resin composition -- the incidence light of various angle ranges -- dispersion To drink -- things are made. <The effect of an invention> The optical control board of the present invention can be manufactured by a comparatively easy method, and alternative dispersion by the angle of the conventionally impossible transparent member and the penetration of only a specific angle can be realized. Although the optical control board of the present invention is a plastic sheet, even if it combines this with a glass board etc., it can be used. And the application to the directions of many, such as window material, a vehicle, a display, a mirror, a display board, and a greenhouse, is expectable using these. <Example> Although an example explains the present invention still in detail below, the present invention is not limited to these examples. Example 1 As opposed to 50 copies of polyether urethane acrylate (refractive index 1.481) obtained by the reaction of the polypropylene glycol of average molecule ff12000, toluene diisocyanate, and 2-hydroxyethyl acrylate, The spacer of 200-micrometer thickness is poured in for the resin composition which carried out addition mixture of 50 copies of compounds (refractive index 1.567) and three copies of 2-hydroxy 2-methyl propiophenone which are shown with the following structural formula (r) between Is Mr. t glass boards, The mercury lamp of 80W (using the ultraviolet exposure device of lamp length 40 (m), as shown in Drawing 1 [ one to ], it irradiated with ultraviolet rays for 3 minutes at 40 countries of distance, and 30 angles, and the hardening sheet was obtained.) As [ a cell is formed with the spacer and glass board of 200 micrometer thickness on it, and the same resin composition is poured in, and ] shown in Drawing 2 [ one to ], it is distance 40 (it irradiated with ultraviolet rays for 8 minutes at m [ 2 ] and 120 angles, and obtained the hardening sheet.). Example 2 As opposed to 50 copies of bisphenol A type epoxy acrylate (refractive index 1.560) 2.2 Pour in Resin Composition Which Carried Out Addition Mixture of 50 Copies (Refractive Index 1.868) of *8.8-Tetrafluoropropylacrylate, and Three Copies of 2-Hydroxy 2-Methyl Propiophenone between Glass Boards Which Sandwiched Spacer of 1 A story Thickness, It was made to harden 401 degrees in 185 distance using the ultraviolet exposure device of the mercury lamp (lamp length 40c111) of 80W, as shown in Drawing 1 [ two to ], and the hardening sheet (ff) was obtained. next, this hardening sheet (I) and (II) which were taken out from between glass boards -- the spacer of 200-micrometer thickness was inserted in between, and the resin composition (Ill) of Example 1 was poured in, and with the device, as shown in Drawing 8 [ two to ], at zero angle, it irradiated with ultraviolet rays for 8 minutes, and obtained hardening sheet (IV). Example 8 The same resin composition as Example 1 was poured in between the glass boards which sandwiched the spacer of 200-micrometer thickness, using the ultraviolet exposure device of the mercury lamp (lamp length 25 .) of 80W, as shown in Drawing 8, it irradiated with ultraviolet rays for 8 minutes at 80 distance 25cn angles, and the hardening sheet was obtained. The cell of 200-micrometer thickness was formed with the hardening sheet and the glass board, the same resin composition was poured in, and the hardening sheet was obtained on the same conditions except making an angle into 50 degrees. The hardening sheet which laminated six deeds for the same operation about 70 angles, 110 degrees, 180 degrees, and 160 degrees, respectively was obtained. Example 4 Cloudy value measurement > The total light transmittance and dispersion optical transmittance of the hardening sheet which were obtained by Example 1~8 with the product-part ball type light transmittance measuring device according to JISK-6714 were measured, and cloudy value was calculated. The specimen was leaned as shown in Drawing 4, and the above-mentioned value was computed at a given angle. The angular dependence of each cloudy value was shown in the 5~7th figure. The 5~7th figure corresponds to the measured value of the hardening sheet of Example 1~8 here, respectively.

[Brief Description of the Drawings]

Drawing 1 [ one to ] and Drawing 2 [ one to ] are the irradiation methods of the ultraviolet rays in Example 1. Drawing 1 [ two to ], Drawing 2 [ two to ], and Drawing 8 [ two to ] are the irradiation methods of the ultraviolet rays in Example 2. Drawing 8 is an irradiation method of the ultraviolet rays in Example 8. Drawing 4 expresses the cloudy value measuring method in Example 4. Drawing 5, Drawing 6, and Drawing 7 are the measurement results of the cloudy value of Example 4, and when the hardening sheet obtained in Example 1, Example 2, and Example 3, respectively is used, they correspond. 1st Drawing [ 1 ] - 1st Drawing [ 2 ] - 2nd Drawing [ 1 ] - The Drawing two to 2 2-3rds figure figure 3 Drawing 4 Drawing 5 Sorrow Drawing 6 Mockery