| 摘要 |
PROBLEM TO BE SOLVED: To provide a brightness measurement device, brightness calculation device and brightness measuring method, simply quantifying brightness of various kinds of products.SOLUTION: A brightness measurement device 10 includes a light irradiation part 11, a plurality of light detection parts 12 and a calculation part 14. The light irradiation part 11 emits light in a direction toward a measured portion from a top portion of a hemisphere having the measured part as the center of the bottom surface to an object to be measured arranged in the measured part. The plurality of light detection parts 12 receive light reflected from the object to be measured to create light receiving data. The reflected light received by the plurality of light detection parts 12 travels at a different position on the surface of the hemisphere. The calculation device 14 acquires brightness data of the object to be measured on the basis of the light receiving data. |
