Measuring device and measuring method

Details Measuring device and measuring method Measuring device and measuring method

2009-06-03

2011-11-01

Stafira, Michael P (Department: 2886)

Optics: measuring and testing

Shape or surface configuration

C356S626000, C356S241100

Reexamination Certificate

active

08049901

ABSTRACT:
A measuring device includes a light-sending part sending light in a first direction which is a depth direction of a hollow shape, a conversion part converting a direction of the light into a circumference direction approximately orthogonal to the first direction, a detection part detecting light reflected inside a measuring object, the direction of which is converted by the conversion part, and a shape measurement part measuring an inside shape of the measuring object by obtaining a shift from a reference position according to a detection result of the detection part. Thereby, it is possible to obtain the hollow shape of an object at one time without a need of rotating the object or a light source, and to carry out a highly accurate measurement using a simple device.

REFERENCES:
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patent: 2008/0259346 (2008-10-01), Strahle
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patent: A-2006-038820 (2006-02-01), None

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