Patent ID: 6100922
Filing Date: 2000-08-08
Classification: G01N

Abstract:
An apparatus for recognizing an absorbed component comprising:means for absorbing the component having a center axis and a tapered, light-diffusing surface adjacent the point of absorption which is larger than the absorbed component;means for lighting the component comprising a first light source for lighting the component from above and a second light source for lighting the component from below; andmeans for recognizing the component including means for detecting the contour of the tapered surface;wherein the optical axis of the first light source is set to an angle .alpha. with the center axis, the angle of the tapered surface with the center axis is set to .beta., the optical axis of the second light source is set to an angle .gamma. with the center axis, and the relation among the aforementioned angles .alpha., .beta., .gamma. is set to:(.pi./2+.beta.)>.alpha. and (.pi./2-.beta.)>.gamma..