Panoramic viewfinder mask

Details Panoramic viewfinder mask Panoramic viewfinder mask

1993-11-30

1995-04-04

Blankenship, Howard B.

G03B 1310

Patent

active

054041899

ABSTRACT:
The viewfinder of a camera include one or more lens elements that zoom in coordination with the camera's taking lens, and normal/panoramic masking plates that pivot about horizontal axis in coordination, with moving masking plates for the camera's back frame opening or with signaling elements. Since the panoramic masking plates are not in the image plane, the aperture in a provided aperture plate is a horizontal slit opening, which provides a great depth of focus, to maintain image sharpness, when the masking plates are in the panoramic position.

REFERENCES:
patent: Re32797 (1988-12-01), Harvey
patent: 2157547 (1939-05-01), Leitz
patent: 4357102 (1982-11-01), Taren
patent: 4716427 (1987-12-01), Shyu
patent: 4973997 (1990-11-01), Harvey
patent: 5010357 (1991-04-01), Misawa
patent: 5066971 (1991-11-01), Kodaira
patent: 5086311 (1992-02-01), Naka et al.
patent: 5170198 (1992-12-01), Cannon

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