Shutter mechanism

Details Shutter mechanism Shutter mechanism

1983-04-27

1985-02-05

Perkey, William B.

354261, G03B 1504, G03B 916

Patent

active

044975538

ABSTRACT:
Opening and closing blades of a shutter are actuated substantially simultaneously with flash firing means igniting a chemical flash lamp. However, initial opening of the shutter is delayed after flash ignition to synchronize full opening of the shutter with the peak intensity of the ignited flash lamp. In operation, the actuated blades are moved in a forward direction, jointly, to prevent shutter opening, and are returned in a reverse direction, successively, with the opening blade moving ahead of the closing blade, to open the shutter for a relatively short exposure time.

REFERENCES:
patent: 3785260 (1974-01-01), Penick
patent: 3887934 (1975-06-01), Ettischer
patent: 3898682 (1975-08-01), Ettischer
patent: 4183648 (1980-01-01), Harvey et al.
patent: 4349259 (1982-09-01), Meyer et al.

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