OBSERVATION APPARATUS FOR SPHERICAL BODY

PROBLEM TO BE SOLVED: To provide an observation apparatus for spherical body which is made simplified and low-cost while securing a successful observation result by uniformizing illumination condition. SOLUTION: In the observation apparatus for spherical body which observes a ball 3 arranged flatly...

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1. Verfasser: HATASE TAKAYUKI
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Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an observation apparatus for spherical body which is made simplified and low-cost while securing a successful observation result by uniformizing illumination condition. SOLUTION: In the observation apparatus for spherical body which observes a ball 3 arranged flatly on a substrate 2 like a lattice with a camera which is relatively transferred in a first direction relative to the substrate 2, an illumination unit which illuminates an imaging visual field 5 of the camera from the surroundings is constituted of a pair of longitudinal illumination unit 6A(F) and 6A(R) arranged along the imaging visual field so as to sandwich the imaging visual field in the front and rear direction relative to the first direction and a pair of lateral illumination units 6B(R) and 6B(L) arranged on the side of the imaging visual field 5 so as to sandwich the imaging visual field 5 in the right and left direction relative to the first direction and light intensity of light emitting elements 7 of each of lower part units 9, upper part units 10 of the lateral illumination units 6B(R), 6B(L) is set based on distance between the elements 7 and target illumination areas 5R and 5L. COPYRIGHT: (C)2004,JPO