Image pick-up apparatus

Details Image pick-up apparatus Image pick-up apparatus

1998-09-10

2000-12-12

Perkey, W. B.

Photography

Flash system responsive to focal length or distance

396 67, 396161, 396166, 396429, 348 64, 348363, 348371, G03B 716, G03B 1503, G03B 1748, H04N 718

Patent

active

061609609

ABSTRACT:
An image pick-up apparatus includes: an image pick-up device for picking up an object image by converting the object image to an electric image signal; an image pick-up optical system having a variable aperture capable of changing an aperture value when an incident light beam on the image pick-up device is stopped down; a range-finder for measuring a distance to an object; an electronic flash mechanism for illuminating the object; and controller for determining an aperture value from the distance to the object measured by the range-finder and from a light emission capability of the electronic flash mechanism, and then for setting the variable aperture to the determined aperture value, when the controller makes the electronic flash mechanism to emit light so that the image pick-up device picks up the object image.

REFERENCES:
patent: 3836922 (1974-09-01), Hasegawa et al.
patent: 4366501 (1982-12-01), Tsunekawa et al.
patent: 4742369 (1988-05-01), Ishii et al.
patent: 4953029 (1990-08-01), Morimoto et al.
patent: 5343268 (1994-08-01), Takahashi et al.
patent: 5602614 (1997-02-01), Ohtsuka et al.
patent: 5867741 (1999-02-01), Maruyama et al.
patent: 5978016 (1999-11-01), Lourette et al.

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