Problem obtaining Kohler illumination in an Orthoplan

I've an Orthoplan microscope equipped with a model 100z lamp housing
holding a tungsten halogen (incandescent) lamp. Because the plano-
convex lens in the field condenser of the lamp housing has its plan
side ground to diffuse the light, I am not able to focus the images of
the filaments (virtual and real) to be coplanar with the substage
iris.

Could anyone assist with a solution? All I get are two hazy blobs of
light, one above the other, whereas one is supposed to get images of
two filaments.

.

Relevant Pages

  • Re: Problem obtaining Kohler illumination in an Orthoplan
    ... convex lens in the field condenser of the lamp housing has its plan ... the filaments to be coplanar with the substage ... aperture-iris and the field iris as well. ...
    (sci.techniques.microscopy)
  • Re: Problem obtaining Kohler illumination in an Orthoplan
    ... convex lens in the field condenser of the lamp housing has its plan ... side ground to diffuse the light, I am not able to focus the images of ... the filaments to be coplanar with the substage ... the microscope to operate in the OK range not in the perfect range. ...
    (sci.techniques.microscopy)
  • Re: Problem obtaining Kohler illumination in an Orthoplan
    ... convex lens in the field condenser of the lamp housing has its plan ... side ground to diffuse the light, I am not able to focus the images of ... the filaments to be coplanar with the substage ... is better than Kohler anyway, ...
    (sci.techniques.microscopy)
Loading