Patent
1991-06-21
1993-05-11
Gellner, Michael L.
G03B 1318
Patent
active
052105652
ABSTRACT:
A camera having a sensor array, a lens, and shutter blades, for focusing the lens in preparation for exposing a frame of photographic film, comprises a means for oscillating the shutter blades, separately, between open and closed positions to expose said sensor array with image light passing through corresponding pupils of the lens. A control means, responsive to said oscillating means, controls the sensor array to sample image light received through the corresponding pupils. A comparing means compares the sensed image light of the pupils with each other and produces a focus adjustment signal representative of a direction of focus error. Lastly, a focusing means, responsive to said focus adjustment signal, focuses said lens according to the focus error.
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Eastman Kodak Company
Gellner Michael L.
Hall David
Noh Jae N.
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