Front lens group for immersion microscope objective in BD versions of high aperture
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United States of America Patent
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-
Jan 6, 1987
Grant Date -
N/A
app pub date -
Aug 29, 1984
filing date -
May 2, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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