| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens measuring instrument for measuring a lens to be inspected with a measurement optical system having a target plate having a microlens or a pin hole and speedily indicating with frequency distribution using a components with simpler structure. SOLUTION: An image of light flux having passed a lens to be inspected and a microlens provided in a target plate is photographed, and the direction vector of the light flux having passed each microlens by taking matched relation between each light flux image and each microlens provided in the target plate is calculated. By using the direction vector of the light flux corresponding to the microlenses at a plurality of close locations in the arbitrarily set region of the lens, complementing operations are conducted to calculate the frequency corresponding arbitrary locations of the lens to be inspected. COPYRIGHT: (C)2004,JPO&NCIPI
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