| 摘要 |
A lens meter for measuring optical characteristics of a lens to be examined, comprises: a measurement optical system including a measurement optical axis, a light source, and a photo-receiving element; an arithmetic part which determines a deviation of an optical axis of the lens from the measurement optical axis based on a light receiving result of the photo-receiving element; a display; and a control part which displays a reticle mark whose center represents the measurement optical axis and a target mark whose center represents the optical axis of the lens on the display so that both marks are in a positional relation according to the determined deviation, and which also displays a guide mark on the display within a predetermined distance from the center of the reticle mark.
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