The gain of a light reflected in the direction at 20° or more from the specular reflection direction of the incident light is 0.02 or less, in which {HEAD ~ the gain} is obtained by normalizing {TAIL ~ a reflected light intensity} using a specular reflection intensity of a standard diffuse plate as 1 
The gain of a light reflected in the direction at 20 ° or more from the specular reflection direction of the incident light is 0.02 or less , in which { HEAD ~ the gain } is obtained by normalizing { TAIL ~ a reflected light intensity } using a specular reflection intensity of a standard diffuse plate as 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH