Shutter including a capping element movable between light-blocki

Details Shutter including a capping element movable between light-blocki Shutter including a capping element movable between light-blocki

1993-08-09

1999-06-22

Garber, Wendy

Television

Camera, system and detail

Optics

348374, 396494, H04N 5238, H04N 5225

Patent

active

059147504

ABSTRACT:
A shutter intended for use with a light-sensitive material. The shutter includes a light-blocking disk having a light-passing portion through which light can pass to reach a light-sensitive material. The disk is rotated to locate its light-passing portion in line with the light-sensitive material to allow light passing through the light-passing portion to advance towards the light-sensitive material. The shutter also includes a capping element which is moved between a light-blocking position and a non-light-blocking position relative to the light-sensitive material and the light-passing portion of the disk. A single sensor is used to detect a predetermined rotational position of the disk and in response thereto the capping element is moved from one of its light-blocking and non-light-blocking positions to the other.

REFERENCES:
patent: Re31547 (1984-04-01), Meyer et al.
patent: 3114306 (1963-12-01), Nieuwenhoven et al.
patent: 3735687 (1973-05-01), Park
patent: 3936168 (1976-02-01), Schild
patent: 4108543 (1978-08-01), Leistner
patent: 4536069 (1985-08-01), Kunica
patent: 4695887 (1987-09-01), Peterson
patent: 4699483 (1987-10-01), Swinehart
patent: 4743108 (1988-05-01), Vogel et al.
patent: 5028946 (1991-07-01), Shinozaki et al.
patent: 5150702 (1992-09-01), Miyanaga et al.

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