Incident light illumination instrument for selective light and dark field illumination
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United States of America Patent
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May 11, 1982
Grant Date -
N/A
app pub date -
Jun 13, 1980
filing date -
Jun 15, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An incident light illumination apparatus for generating light and dark field illumination along an optical axis. The illumination apparatus is coupled to a stage arm of a microscope and a microscope tube is coupled to the illumination apparatus. An illumination stub (7) is located in the illumination apparatus along the optical axis between a light source (8) and an optical deflecting element (11). An aperture (13) passes through the stub from side-to-side for the interchangeable insertion of an insertion module (14,15). This insertion module contains at least two functional groups (I,II; III,II) which can be sequentially placed into the optical axis (9) and the functional groups consist of light attenuating (25) and/or light bounding (19,20,23,24,27) optical components, and additional means (28,29) for pivoting a center stop (30) into the optical axis (9).
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