Exposing apparatus for performing exposure control corresponding

Details Exposing apparatus for performing exposure control corresponding Exposing apparatus for performing exposure control corresponding

1994-06-14

1995-12-05

Mancuso, Joseph

Television

Camera, system and detail

Optics

348364, 348229, H04N 5238

Patent

active

054733740

ABSTRACT:
An exposing apparatus comprises: a lens group to fetch a light from an object; an iris to adjust a light amount from the lens group; an image pickup device to convert the light which passed through the iris into the electric signal; a detecting circuit to detect a luminance signal level from an output signal from the image pickup device; a reference level signal setting circuit to set an exposure control reference value to control the iris; an exposure control reference value modulating circuit to modulate the exposure control reference value when the iris is controlled; and a control circuit to set the exposure control reference value in correspondence to the luminance signal level when an output level of the detecting circuit is larger than a set value.

REFERENCES:
patent: 5093716 (1992-03-01), Kondo et al.
patent: 5128769 (1992-07-01), Arai et al.
patent: 5282075 (1994-01-01), Sugihori
patent: 5333011 (1994-07-01), Thompson et al.

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