Slit apparatus

Details Slit apparatus Slit apparatus

1988-06-29

1989-04-04

Corbin, John K.

350271, G02B 2602

Patent

active

048180688

ABSTRACT:
A slit apparatus has a rotatable base plate and a rotatable cam driving plate which are rotated about the same axis of rotation, but independently. The base plate is provided with slit blades for forming a slit therebetween. The slit blades are rotated together with the base plate and therefore the direction of the slit is changed. The cam driving plate is provided with a cam plate for changing slit width. The slit width is changed by rotation of the cam driving plate. A slit direction adjusting knob for driving the base plate is arranged to be coaxial with a slit width adjusting knob for driving the cam driving plate.

REFERENCES:
patent: 3639039 (1972-02-01), Rhodes, Jr.

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