Microscope illumination regulator system - consists of simple pivoted mechanical shutter with parallel light channels of effective width dependent on set angle

摘要

A lighting flux regulator is used for microscope work. It consists of a support frame (10) which holds a set of fixed parallel transparent channels (9) extending in the direction of projection of the light. The frame is pivoted about an axis (12) perpendicular to the optical axis of the illumination system. The channels may be formed as a series of gaps between parallel laminae. The laminae forming the channels may be replaced by a honeycomb arrangement. The pivot may be on the centreline of the frame or on the bottom.