Range finder device having mode for removing steady light components and mode for not removing steady light components

摘要

A range finder device includes a light projecting section for projecting range finding light onto an object and a light receiving section for monitoring the image pattern of the object. An integrating circuit integrates an output signal from the light receiving section. A steady light component removing section prevents an output signal accompanying steady light irradiated steadily onto the light receiving section from being fed to the integrating circuit. A control section sets a first mode in which the steady light component removing section is operated during range finding or a second mode in which the steady light component removing section is not operated based on an output signal from the light receiving section.