Patent ID: 9316942
Filing Date: 2016-04-19
CPC Classification: G01N,G03G

Claim Text:
1. A reflection detection apparatus comprising: multiple light-receiving elements configured to detect a pattern formed on an object by receiving a reflected light from the object; and a selector configured to select a first light-receiving element group from the multiple light-receiving elements, wherein the selector is configured to select the first light-receiving element group that includes plural light-receiving elements each mainly receiving a specularly reflected light from an area of the object where no pattern is formed among the multiple light-receiving elements, on a basis of outputs from the multiple light-receiving elements, the detection of the pattern is made on a basis of an output from the first light-receiving element group, and the selector is configured to be capable of shifting the first light-receiving element group in units of light-receiving elements whose number is less than that of the light-receiving elements included in the first light-receiving element group.