| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the number of light sources in a color sensor which is used in a multi directional illumination-unidirectional receiver type calorimeter. <P>SOLUTION: A curved reflector 15 is disposed so that a focal point thereof coincides with an emitting point of a light source 13. Optical path separating means 16 including two flat mirrors 16a and 16b is disposed in a light emitting direction of a beam of light from the light source 13 which is converted into a parallel light beam by the curved reflector 15. The parallel light beam reflected by the flat mirror 16a is directly radiated onto a plane of an object to be measured; and the parallel light beam reflected by the flat mirror 16b is reflected by a radiating reflection mirror 17 and then radiated onto the plane of the object to be measured. <P>COPYRIGHT: (C)2012,JPO&INPIT |
