Light Reflection Film And Laminate Having The Light Reflection Film

Abstract

A light reflection film includes at least one light reflection layer RPRL in which a cholesteric liquid crystal phase of a right-handed helical structure having right circularly polarized light reflection ability is fixed; and at least one light reflection layer LPRL in which a cholesteric liquid crystal phase of a left-handed helical structure having left circularly polarized light reflection ability is fixed. A total of three or more layers of the light reflection layer(s) RPRL and the light reflection layer(s) LPRL are laminated. The light reflection layer(s) RPRL and the light reflection layer(s) LPRL laminated each have a selective reflection center wavelength shifted by an interval of 10 nm or more and 160 nm or less between two light reflection layers adjacent to each other.

What is claimed is: 
     
         1 . A light reflection film comprising:
 at least one light reflection layer RPRL in which a cholesteric liquid crystal phase of a right-handed helical structure having right circularly polarized light reflection ability is fixed; and   at least one light reflection layer LPRL in which a cholesteric liquid crystal phase of a left-handed helical structure having left circularly polarized light reflection ability is fixed,   a total of three or more layers of the light reflection layer(s) RPRL and the light reflection layer(s) LPRL are laminated, and the light reflection layer(s) RPRL and the light reflection layer(s) LPRL laminated each have a selective reflection center wavelength shifted by an interval of 10 nm or more and 160 nm or less between two light reflection layers adjacent to each other.   
     
     
         2 . The light reflection film according to  claim 1 , wherein the light reflection film has a region that reflects more than 50% and 95% or less of light with respect to incident light. 
     
     
         3 . The light reflection film according to  claim 1 , wherein the light reflection film has a haze value (Hz) of 1.0% or less. 
     
     
         4 . The light reflection film according to  claim 1 , wherein each of the light reflection layer has a thickness of 0.5 μm or more and 5 μm or less. 
     
     
         5 . A laminate comprising:
 the light reflection film according to  claim 1 ; and   a base material.