Photoelectric measuring device for measuring e.g. distance between vehicles, has light source for forming beam flux having wavelength that is in predetermined local minimum of atmospheric spectral transmission factor

摘要

The photoelectric measuring device includes a transmitting unit (10) provided with a light source (1) for forming a beam flux. The wavelength of the beam flux is in the predetermined local minimum of an atmospheric spectral transmission factor. The transmitting unit is used for radiating a light beam to a target object.