Iris Diaphragm
Legal definition for Indian law research
Definition
An adjustable diaphragm reminiscent of the iris of the eye in its action by which the diameter of an approximately circular opening may be controlled as for regulating the aperture of a lens it consists of a number of movable thin curved plates fastened at regular intervals around the inside of a ring the positions of which are simultaneously adjusted by a single knob on the outside of the lens It is used in cameras and microscopes
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