Nikon DIAPHOT 300 - System Condenser Turret Unit

7. System Condenser Turret Unit
A condenser has dual functions. It condenses light, and provides the condensed
light with optical elements to enable various types of microscopic applications.
Traditional microscopes require condensers to be changed according to microscopic
applications: for example, a phase contrast condenser for phase contrast
microscopy, and a differential interference condenser for differential interference
microscopy.
The system condenser turret unit of this microscope features modules that contain
optical elements: up to five modules can be built in the unit. The user need only to
rotate the turret to execute various microscopic applications without changing
condensers. Modules may be replaced without dismounting the condenser turret
unit from the microscope, enabling several microscopic applications to be executed
for a short period of time.
• Modules may be arranged freely in the turret unit if they are applicable to the
condenser lens in use.
• For phase contrast microscopy, select the module having the same Ph code as
marked on the objective and bring it into the optical path and center the annular
diaphragm. (See page 9.)
• Be sure to keep the condenser aperture diaphragm fully opened when the system
condenser turret unit is used for phase contrast microscopy. (With the condenser
aperture diaphragm stopped down, the optical path is blocked.)