A phase difference plate including a layer of a liquid crystal material oriented in an in-plane direction, wherein an in-plane retardation Re() at a wavelength nm of the phase difference plate satisfes the following formulae (e1) and (e2): {Re(400)-Re(550)}/{Re(550)-Re(700)}<2.90 (e1), and Re(400)/Re(700) >1.13 (e2); as well as a multilayer phase difference plate including the same, a polarizing plate including the same, and an image display device including the same.

A phase difference plate including a layer of a liquid crystal material oriented in an in-plane direction, wherein an in-plane retardation Re() at a wavelength nm of the phase difference plate satisfes the following formulae (e1) and (e2): {Re(400)-Re(550)}/{Re(550)-Re(700)}<2.90 (e1), and Re(400)/Re(700) >1.13 (e2); as well as a multilayer phase difference plate including the same, a polarizing plate including the same, and an image display device including the same.

A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.

A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.

Provided is a polymerizable compound usable in the preparation of an optical film, etc. having favorable reverse wavelength dispersibility. The polymerizable compound is represented by the following Formula (I) where Ar.sup.1 represents a predetermined ring group, A.sup.1 to A.sup.2 and B.sup.1 to B.sup.2 represent a cyclic aliphatic group or an aromatic group that may have a substituent, Z.sup.1 to Z.sup.2, L.sup.1 to L.sup.2, and L.sup.1a to L.sup.2a represent a predetermined group such as O, C(O)O, or OC(O), G.sup.1 to G.sup.2 represent an aliphatic hydrocarbon group with a carbon number of 3 to 20 that may have a substituent, P.sup.1a to P.sup.2a represent a polymerizable group, a and b represent 0 or 1, and a part represented by -L.sup.1a-G.sup.1-P.sup.1a and a part represented by -L.sup.2a-G.sup.2-P.sup.2a have different structures:

##STR00001##

Provided is a polymerizable compound usable in the preparation of an optical film, etc. having favorable reverse wavelength dispersibility. The polymerizable compound is represented by the following Formula (I) where Ar.sup.1 represents a predetermined ring group, A.sup.1 to A.sup.2 and B.sup.1 to B.sup.2 represent a cyclic aliphatic group or an aromatic group that may have a substituent, Z.sup.1 to Z.sup.2, L.sup.1 to L.sup.2, and L.sup.1a to L.sup.2a represent a predetermined group such as O, C(O)O, or OC(O), G.sup.1 to G.sup.2 represent an aliphatic hydrocarbon group with a carbon number of 3 to 20 that may have a substituent, P.sup.1a to P.sup.2a represent a polymerizable group, a and b represent 0 or 1, and a part represented by -L.sup.1a-G.sup.1-P.sup.1a and a part represented by -L.sup.2a-G.sup.2-P.sup.2a have different structures:

##STR00001##

An object of the present invention is to provide a polymerizable composition with which a polymer having a high degree of hardness can be produced. Another object is to provide, for example, an optically anisotropic body, a phase retardation film, an optical compensation film, an antireflection film, a lens, and a lens sheet that are composed of the polymerizable composition and a liquid crystal display element, an organic light-emitting display element, a lighting element, an optical component, a coloring agent, a security marker, a laser emission member, a polarizing film, a coloring material, and a printed item that are produced using the polymerizable composition. The present invention provides a polymerizable composition including a polymerizable compound represented by General Formula (IA) which has a specific structure including a plurality of polymerizable groups.

An object of the present invention is to provide a polymerizable composition with which a polymer having a high degree of hardness can be produced. Another object is to provide, for example, an optically anisotropic body, a phase retardation film, an optical compensation film, an antireflection film, a lens, and a lens sheet that are composed of the polymerizable composition and a liquid crystal display element, an organic light-emitting display element, a lighting element, an optical component, a coloring agent, a security marker, a laser emission member, a polarizing film, a coloring material, and a printed item that are produced using the polymerizable composition. The present invention provides a polymerizable composition including a polymerizable compound represented by General Formula (IA) which has a specific structure including a plurality of polymerizable groups.

A photocurable composition including metal oxide nanoparticles (X) and a photopolymerizable sulfur compound (C).

A photocurable composition including metal oxide nanoparticles (X) and a photopolymerizable sulfur compound (C).