Aperture stop for a photometry unit of a camera

Details Aperture stop for a photometry unit of a camera Aperture stop for a photometry unit of a camera

1997-02-18

1997-12-23

Perkey, W. B.

Photography

Having photocell at specific position within camera

G03B 708

Patent

active

057015287

ABSTRACT:
Attaching window glass to a window used in photometry without degrading the external appearance of a camera, with the aim of simplifying the photometric optical system. The device has a photometric unit which conducts photometry on the subject region and which is provided inside the housing of the camera, an aperture stop is formed integrally with the housing at a position in front of the photometry unit. The aperture stop restricts the amount of incidental light on the photometry unit. A window glass is attached, from the inside of the housing, to cover the aperture region of the aperture stop. Further, the aperture stop is provided with a tapered surface which is formed so that the aperture region expands from the outside of the housing to the inside.

REFERENCES:
patent: 5136326 (1992-08-01), Yokota et al.
patent: 5302998 (1994-04-01), Kawano

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