Focusing detecting device
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United States of America Patent
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-
May 31, 1983
Grant Date -
N/A
app pub date -
Oct 10, 1980
filing date -
Nov 27, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An illuminating system is provided for a focus detecting device capable of producing range detection signals corresponding to the distance between the camera and the objects by receiving with a plurality of photoelectric elements the light of the objects transmitted through a fixed light passage and a movable light passage provided with a movable mirror. The illuminating light source of the illuminating system is disposed to project the illuminating light through the movable light passage. When the brightness of the objects is low, the plurality of photoelectric elements are integrated into practically a single photoelectric element to combine the outputs of respective photoelectric elements into a single output thus receiving the reflected light of the illumination and providing a focus detection signal.
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