Patent ID: 8092711

Claim:
An optically anisotropic material which is obtained by photopolymerizing a polymerizable a liquid crystal compound represented by the following formula (1): CH 2 ═CR 1 —COO-(L) k -E 1 -E 2 -(E 3 ) m -R 2 (1) wherein R 1 is a hydrogen atom or a methyl group; R 2 is a C 1-8 alkyl group or a fluorine atom, and when R 2 is an alkyl group, an etheric oxygen atom may be present in a carbon-carbon bond or at an end of the group to be bonded to a cyclic group, and a part or all of hydrogen atoms may be substituted by fluorine atoms; K is 0 or 1; L is —(CH 2 ) p COO—, —(CH 2 ) q OCO—, —(CH 2 ) r O— or —(CH 2 ) s —(wherein p, q, r and s are each independently an integer of from 1 to 8); E 1 and E 2 are each independently a trans-1,4-cyclohexylene group or a trans -2,6-decahydronaphthalene group, and at least one of E 1 and E 2 is a trans-2,6-decahydronaphthalene group (wherein in the trans-1,4-cyclohexylene group and the trans -2,6-decahydronaphthalene group in E 1 and E 2 , hydrogen atoms bonded to carbon atoms in the groups may be each substituted by a fluorine atom or a methyl group); E 3 is a trans-1,4-cyclohexylene group or a 1,4-phenylene group (wherein in the trans-1,4-cyclohexylene group and the 1,4-phenylene group in E 3 , hydrogen atoms bonded to carbon atoms in these groups may be each substituted by a fluorine atom or a methyl group); and m is 0 or 1.