Front lens group for immersion microscope objective in BD versio

Details Front lens group for immersion microscope objective in BD versio Front lens group for immersion microscope objective in BD versio

1984-08-29

1987-01-06

Corbin, John K.

G02B 2110

Patent

active

046342346

ABSTRACT:
The invention relates to a front lens group for an immersion objective of BD arrangement with high aperture, suitable for a dark field incident illumination of a widefield immersion objective for microscopes. A spherical front lens surface is provided with a totally reflecting aspherical surface section via which the light is guided to the object, and is combined with a suitable epipolar system to produce a widefield immersion objective of even and colorfree illumination. The lens group is forwardly self-contained.

REFERENCES:
patent: 1999240 (1935-04-01), Kraft et al.
Boegehold, Das Optische System des Mikroskops, pp. 96-99, VEB Verlag Technik Berlin, 1959.

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