PROBLEM TO BE SOLVED: To provide a marker calibrating device for evaluating the grade of rotation symmetry property on the detection principle of a marker used in combination with a marker detector.SOLUTION: When the marker of a calibration object is mounted on a rotary shaft member by a mounting part and prescribed periodic motion is given to the rotary shaft member by a driving part, the marker calibrating device inputs the detection data of the marker acquired from the marker detector into a processing part to obtain index data of axial symmetry property on the detection principle of the marker as the calibration data by data processing by the processing part.COPYRIGHT: (C)2011,JPO&INPIT【課題】標識検出器と組み合わせて用いられる標識の、検出原理上の回転対称性の程度を評価するための標識検定装置を、提供する。【解決手段】標識検定装置は、装着部により検定対象の標識を回転軸部材に装着して、駆動部によって回転軸部材に所定の周期運動を与えた場合に、標識検出器から得られた標識の検出データを、処理部に入力し、処理部のデータ処理によって標識の検出原理上の軸対称性の指標データを検定データとして得る。【選択図】図1
