| 摘要 |
A distance measurement device measures target distances to a measurement target by optically detecting the measurement target using a lens. The image formation relative quantity calculating part of the distance measurement device creates an image of the measurement target by causing light having a plurality of wavelengths from the measurement target to form an image by part of the lens. By further determining the image formation distances from the lens to the image for each wavelength, image formation relative quantities, which are quantities indicating the relative relationship between the image formation distances, are calculated. A recording part records correlation information, which is information defined by the chromatic aberration characteristics of the lens, in a manner so as to indicate the correlation between image formation relative quantities and target distances. A distance calculating part calculates the target distances by matching the image formation relative quantities to the correlation information.
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