Camera shutter with diaphragm and electro-magnetic drive for dia

Details Camera shutter with diaphragm and electro-magnetic drive for dia Camera shutter with diaphragm and electro-magnetic drive for dia

1975-05-28

1977-03-15

Adams, Jr., Russell E.

354234, 354272, G03B 900, G03B 908, G03B 902

Patent

active

040127508

ABSTRACT:
A camera shutter assembly is provided having segments which may be moved by electro-magnetic means. The diaphragm blades are also provided with electro-magnetic means and there are mechanical intermediate members so that the blades can be moved into an open position. Subsequently, the blades can be closed to a predetermined aperture setting by spring means. By these means the photographer can move the shutter segments and the diaphragm blades into open positions and thereafter back into their original positions to make intermediate observations from a single location.

REFERENCES:
patent: 2861506 (1968-11-01), Leder et al.
patent: 3554104 (1971-01-01), Winkler et al.
patent: 3687042 (1972-08-01), Mizui et al.

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