Auto optical focus detecting device and eye direction detecting

Details Auto optical focus detecting device and eye direction detecting Auto optical focus detecting device and eye direction detecting

1992-08-07

1994-03-01

Adams, Russell E.

354404, G03B 1336

Patent

active

052912345

ABSTRACT:
An auto optical focus detecting device of a camera comprises a center zone being located in a center of a view finder of a camera body; at least two peripheral zones being located in the view finder, one of the two peripheral zones center zone and the other being located in the left-hand side; the camera body containing a center auto focus optical system and at least two peripheral auto focus optical systems; the center auto focus optical system having a zone corresponding to the center zone, the zone being substantially conjugate with the center zone; the peripheral auto focus optical systems, respectively, having a substantially conjugate zone corresponding to the peripheral zone, each zone being substantially conjugate with the peripheral zone; a photographic lens being attached to the camera body, an exit pupil of the photographic lens being looked through the center zone of the center auto focus optical system, at least two aperture zones being defined on the exit pupil by the at least two peripheral auto focus optical systems, each of the aperture zones being looked through the peripheral zone, at least one of the two aperture zones being located at an upper side away from a central portion of the exit pupil and the other being located at a lower side away from the central portion; the center auto focus optical system and the two peripheral auto focus optical systems, respectively, having at least one photoelectronic device for producing an output signal; and the output signal produced by the photoelectronic device being adapted to move the photographic lens automatically, thereby to bring the camera to be in focus.

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English Language translation of German Office Action of Feb. 17, 1993.
L. R. Young and D. Sheena, "Survey of Eye Movement Recording Methods", Behavior Research Methods and Instrumentation, vol. 7 (5), 1975, pp. 400-405 and 417-418.
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