Turret condenser for microscopes

摘要

A turret condenser for microscopes comprising a turret, an aperture stop, a stop ring for opening and stopping down the aperture stop, a cam fixed to the turret, a lever means having one end in contact with the cam and the other end having a through hole formed therein, and a spring having one end fixed to the stop ring and the other end carrying a retaining piece fixed thereto, the spring passing through the through hole formed in the lever means, the turret condenser for microscopes being arranged so that the stop ring always keeps the stop fully opened by means of the force of the spring when the turret is in the position of phase contrast microscopy.