Patent ID: 8553322

Claim:
A collection optics system comprising: a turret having a plurality of objective housings affixed thereto; a frame positioned in registration to the turret; docking port mounted onto the frame to which one of the plurality of objective housings can dock at a time; a vertical motion mechanism imparting vertical motion to the turret; wherein the vertical motion mechanism raises the turret so as to dock one of the objective housings onto the docking port, and lowers the turret so as to disengage a docked objective housing from the docking port such that the objective housing is disengaged from the docking port; and, a turret rotation mechanism configured to rotate the turret such that when a different objective housing is needed, the objective housing is undocked from the docking port, the turret is rotated, and another objective housing is docked into the docking port instead; and, further comprising a spray cool mechanism configured to spray cooling liquid onto an observed specimen so as to cool the specimen during observation.