Abstract: A distance measuring apparatus (11) optically detects a measuring target, thereby measuring an object distance, which is the distance to the measuring target. The orientation of an optical axis of a lens is set to be different from an advancing direction of light incident from the measuring target. The lens is configured to form an image from the incident light, thereby obtaining an image of the measuring target.

Abstract: A distance measuring apparatus (11) optically detects a measuring target, thereby measuring an object distance, which is the distance to the measuring target. The orientation of an optical axis of a lens is set to be different from an advancing direction of light incident from the measuring target. The lens is configured to form an image from the incident light, thereby obtaining an image of the measuring target.

Abstract: 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.