Glossary
K
- Kellner eyepiece
- A modified eyepiece featuring a lens doublet to increase both eyepoint and field of view.
- See also: eyepiece, eyepoint height, Ramsden eyepiece
- Köhler illumination
- A method for even illumination of the object plane in an optical microscope that is applicable to both transmitted and reflected light configurations. Using Köhler illumination, the image of the light source (located in an aperture plane) is perfectly defocused in the object plane (located in a field plane).
- See also: conjugate planes, critical illumination, field plane, aperture plane, object plane, light source
