Electronic still camera having an optical system for TTL dimming

Details Electronic still camera having an optical system for TTL dimming Electronic still camera having an optical system for TTL dimming

1993-10-12

1994-10-25

Mancuso, Joseph

Television

Camera, system and detail

Optics

348362, 354478, H04N 5225

Patent

active

053593642

ABSTRACT:
An electronic still camera having an optical system suitable for TTL direct dimming and capable of disposing a dimming sensor at a suitable position in a main body of the camera. A part of a light reflected by a subject and passing through a taking lens during stroboscopic photographing is diverged by a beam splitter provided on the optical axis of the taking lens and caused to fall into a half mirror. The reflected light diverged by this half mirror is led to the dimming sensor 34, and the transmitted light is led to an AE sensor via a focusing lens. With this arrangement, the dimming sensor can be provided in a position other than the vicinity of a taking shutter and the TTL direct dimming can be conducted.

REFERENCES:
patent: 4237475 (1980-12-01), Sekiguch et al.
patent: 4774539 (1988-09-01), Suda et al.
patent: 4814811 (1989-03-01), Saito et al.
patent: 4823199 (1989-04-01), Sakakibara et al.
patent: 4823200 (1989-04-01), Tsunekawa et al.
patent: 4926247 (1990-05-01), Nagasaki et al.

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