Instrument (test set) for calibration and adjustment of laser rangefinders

摘要

A universal, integral instrument is proposed for calibration and adjustment of laser rangefinders, using which all conventional laser rangefinders can be calibrated, checked and adjusted irrespective of the wavelength of their laser and the distances between the outlet pupils of the transmitter and receiver. To this end, in addition to an adjustable autocollimator which emits modulated light, a slanting reflector is provided at whose focus a target mark is arranged. The receiver aperture of the laser rangefinder is illuminated via the slanting reflector. The illumination light is modulated and has the same wavelength as that of the laser of the laser rangefinder. The field of view of the receiver aperture and the laser pulse of the laser transmitter are imaged on a pyrikon. The image of the point source of the autocollimator on the pyrikon is used as a reference mark. The images are stored in the image memory of the pyrikon and are fed to a computer for automatic evaluation.