Mitutoyo Corporation

Shinji Takahashi

Naoya Kikuchi

Kenji Ochi

An optical measuring device includes: a screen having a reference line; a movable stage; an optical system for forming on the screen an optical image of a to-be-measured object placed on the stage; and an edge detecting sensor () for detecting a passage of a measurement edge of the optical image at an arbitrary position on the screen. The optical measuring device further includes: an offset value storage () storing a distance between the reference line and the edge detecting sensor () as an offset value; and a correction data calculator () for correcting measurement data measured with the reference line and the edge detecting sensor () by use of the offset value.

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Utsunomiya, Japan

Shinji Takahashi