Camera distance measuring device

摘要

The present invention is a camera distance measuring device having an integral light receiving element for receiving light from a photographic object and outputting light received signals, and a fixed light elimination circuit for eliminating the fixed light component from the output signals of this integral light receiving element. This camera distance measuring device functions as an active distance measuring device by making the fixed light elimination circuit operative and functions as a passive distance measuring device by making the fixed light elimination circuit inoperative. When functioning as an active distance measuring device, this camera distance measuring device alternatively employs either a first illumination device such as a strobe light for illuminating a wide range including the photography range or a second illumination device such as an infrared LED for illuminating a spot-like range within the photography range.