Patent ID: 8976361
Filing Date: 2015-03-10
Classification: G01N

Abstract:
1. A measuring apparatus for measuring a reflection characteristic of a surface, the measuring apparatus comprising: an illumination device including a surface light source and configured to illuminate the surface with light from the surface light source; a detector configured to detect a light intensity distribution formed on a light-receiving surface by reflected light from the surface illuminated by said illumination device; and a processor configured to obtain the reflection characteristic based on first data of the light intensity distribution detected by said detector, wherein said processor is configured to estimate, based on the first data, second data of a light intensity distribution formed on the light-receiving surface by specular reflected light from the surface and third data of a light intensity distribution formed on the light-receiving surface by diffuse reflected light from the surface in a case where a point light source is disposed at each position in a light-emitting region of the surface light source, and to estimate, based on the second data and the third data, a light intensity distribution formed on the light-receiving surface by reflected light from the surface in a case where a light source, at least one of a shape and a size of a light-emitting region of which is different from that of the surface light source, is disposed in place of the surface light source.