Abstract:
Provided are a half mirror for displaying a projected image having visible light transmittance including a layer formed by immobilizing a cholesteric liquid crystalline phase (for example, three or more layers formed by immobilizing a cholesteric liquid crystalline phase which exhibit different center wavelengths of selective reflection), in which an antireflection layer may be included on the outermost surface on a projected image display side, and a projected image display system including the half mirror for displaying a projected image and a projector, in which the light emission wavelength of a light source of the projector is in a selective reflection band of the layer formed by immobilizing the cholesteric liquid crystalline phase. The half mirror for displaying a projected image of the present invention is useful as a combiner of a head up display or the like.
Abstract:
The present invention provides a polymerizable composition containing a polymerizable liquid crystal compound represented by Formula (I) and an oxime compound, in the formula, A1 and A2 each represent a phenylene group or a trans-1,4-cyclohexylene group, L1 and L2 each represent single bond, —C(═O)O—, or —OC(═O)—, Q1 and Q2 each represent a polymerizable group or the like, m and n represent an integer of 0 to 2, X may represent —X3-Sp3-Q3 or two X's may be bonded to each other to form a fused ring, X3 represents —C(═O)O—, Sp1, Sp2, and Sp3 each represent single bond, an alkylene group, or the like, Q3 represents hydrogen atom, a cycloalkyl group, a polymerizable group, or the like, and l represents an integer of 0 to 4. The polymerizable composition hardly causes yellowing after curing and is useful for manufacturing a film and a half mirror for displaying a projection image.
Abstract:
The present invention provides a reflection member including a selective reflection layer; and two ¼ wavelength phase difference plates, in which the selective reflection layer is disposed between the two ¼ wavelength phase difference plates, the selective reflection layer includes a layer of a fixed cholesteric liquid crystal phase having a central wavelength of selective reflection at a visible light range wavelength λi, and the selective reflection layer includes a layer in which a twisted direction of a helix of a cholesteric liquid crystal is only one of right or left as the layer of a fixed cholesteric liquid crystal phase having selective reflection at the wavelength λi. The reflection member of the present invention can be used particularly as a heat shielding member, which can reduce damage to the optical systems due to external light including visible light while efficiently extracting projected light.
Abstract:
An object of the present invention is to provide a sheet capable of increasing uniformity of quality of a liquid crystal optical element manufactured by a batch process. Another object of the present invention is to provide a manufacturing method of a liquid crystal optical element. The sheet of the present invention is a sheet including a liquid crystal layer containing a liquid crystal compound, in which the liquid crystal layer has a plurality of liquid crystal alignment pattern regions having a liquid crystal alignment pattern in which an orientation of optical axes derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, the plurality of liquid crystal alignment pattern regions are arranged to be spaced apart from each other in two directions orthogonal to each other in a plane of the liquid crystal layer, with a non-aligned region interposed between liquid crystal alignment pattern regions, two or more of the liquid crystal alignment pattern regions are arranged in each of the two directions in the liquid crystal layer, the non-aligned region is a region having no liquid crystal alignment pattern and no slow axis, an outer periphery of the liquid crystal alignment pattern region is surrounded by an outer peripheral region, the outer peripheral region is a region having no liquid crystal alignment pattern and having a slow axis, and a specified region including the liquid crystal alignment pattern region is capable of being cut out as a liquid crystal optical element.
Abstract:
A laminated body sequentially includes a substrate, an adhesive layer, and a multilayer film. The laminated body has characteristics of transmitting first polarized light and reflecting second polarized light having a polarization axis x that intersects a polarization axis y of the first polarized light. The multilayer film includes a plurality of first layers formed of a crystalline naphthalenedicarboxylic acid polyester and a plurality of second layers formed of a polymer other than the crystalline naphthalenedicarboxylic acid polyester, the first layers and the second layers being alternately stacked on top of each other. The first layers have a higher refractive index than the second layers on the polarization axis of the second polarized light, and the multilayer film has a thermal expansion coefficient of −80 [10−6/K] or more at a temperature 3° C. higher than a glass transition point of the multilayer film in the polarization axis direction of the first polarized light.
Abstract:
A transfer sheet includes a cured liquid crystal composition layer, a block layer including a (meth)acrylic polymer, and a thermoplastic welded layer in this order, the thermoplastic welded layer and the block layer are in direct contact with each other, and the thermoplastic welded layer includes a thermoplastic resin and an ultraviolet curable resin.
Abstract:
The present invention provides a polymerizable composition including a polymerizable liquid crystal compound of Formula (I) and a urethane (meth)acrylate monomer including a urethane bond and three or more (meth)acryloyl groups; Q1-Sp1A-Lm-1A-Sp2-Q2 (I) A represents a cyclic divalent group (at least one thereof is a divalent saturated hydrocarbon ring group), L represents —C(═O)O—, —OC(═O)—, and the like, and m represents 3 to 12, Sp1 and Sp2 are alkylene and the like, any one of Q1 and Q2 represents a polymerizable group; a film including a layer obtained by curing the polymerizable composition; and a film adjacently including a layer obtained by curing polymerizable composition including a polymerizable liquid crystal compound represented by Formula (I) and a layer obtained by curing composition including a urethane (meth)acrylate monomer and a manufacturing method thereof. The polymerizable composition includes a polymerizable liquid crystal compound having low birefringence and can provide a highly-durable optical film.
Abstract:
Provided are a half mirror for displaying a projected image having visible light transmittance including a layer formed by immobilizing a cholesteric liquid crystalline phase(forple, three or more layers formed by immobilizing a cholesteric liquid crystalline phase which exhibit different center wavelengths of selective reflection), in which in a surface of the layer formed by immobilizing the cholesteric liquid crystalline phase on a projected image display side which is closest to the projected image display side, directors of cholesteric liquid crystal molecules forming a cholesteric liquid crystalline phase are even; a projected image display system including the half minor for displaying a projected image and a projector; and a method for producing the half mirror for displaying a projected image. The half mirror for displaying a projected image of the present invention is useful as a combiner of a head up display or the like.
Abstract:
The method for producing an optical film includes a film-curing step of curing the coating to form a liquid crystal layer by supporting a second surface of the transparent support by a back-up roller while heating, and irradiating the coating with ultraviolet light, wherein, when an reaching temperature of the transparent support in curing of the coating is set to 80° C. or higher, and P [N/m2] represents a surface pressure, T [N] represents a tensile force applied to the transparent support, R [m] represents a radius of the back-up roller, L [m] represents a width of the transparent support, and G [GPa] represents an elastic modulus in a width direction of the transparent support at the reaching temperature of the transparent support in curing of the coating, Expression (1): P=T/RL and Expression (2): P>69/(G−1.5)+400 are satisfied.
Abstract translation:光学膜的制造方法包括:通过在加热的同时通过支撑辊支撑透明支撑体的第二表面并且用紫外线照射涂层来固化涂层以形成液晶层的膜固化步骤,其中 当涂层固化时的透明支撑体的到达温度设定为80℃以上,P [N / m 2]表示表面压力时,T [N]表示施加于透明支撑体的张力, R [m]表示支撑辊的半径,L [m]表示透明支撑体的宽度,G [GPa]表示在透明支撑体的到达温度下透明支撑体的宽度方向的弹性模量 支持固化涂层,表达式(1):P = T / RL和表达式(2):P> 69 /(G-1.5)+400。