Patent ID: 8542443

Claim:
A light reflector, comprising: a substrate layer comprising a polyolefinic resin and a filler and stretched in at least one direction; and a light-diffusive layer including a filler in a concentration of from 45 to 70% by weight, wherein the substrate layer has a bidirectional reflectance R 1 which is from 90 to 120% with respect to a bidirectional reflectance of a ceramic standard white plate, when a light entrance angle is 15° and a light acceptance angle is 0°, the substrate layer has a bidirectional reflectance R 2 which is from 85 to 110% with respect to a bidirectional reflectance of a ceramic standard white plate, when the light entrance angle is 75° and the light acceptance angle is 0°, the light entrance angle and the light acceptance angle are angles with respect to a normal line direction of a surface to which light is applied, and the filler in the light-diffusive layer comprises at least one material selected from the group consisting of an inorganic filler having a mean particle size of from 0.2 to 0.7 μm and an organic filler having a mean dispersed particle size of from 0.2 to 0.7 μm.