Infrared wink ranging system

Details Infrared wink ranging system Infrared wink ranging system

1987-12-10

1988-11-15

Adams, Russell E.

354415, 354482, G03B 300, G03B 1318

Patent

active

047853220

ABSTRACT:
A black, infrared pass filter is disposed in front of the strobe element of an automatic rangefinding camera to provide an infrared ranging wink for ranging during the pre-exposure steps of a camera cycle. As the cycle continues, the filter is temporarily displaced from in front of the strobe element to allow a visible light, flash firing for scene illumination. Once the exposure firing is complete, the filter resumes its original position in front of the strobe element such that the filter allows only infrared light to be transmitted from the strobe element except during exposure strobe firing.

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