Incident light illumination instrument for selective light and d

Details Incident light illumination instrument for selective light and d Incident light illumination instrument for selective light and d

1974-05-28

1976-01-06

Kominski, John

350 91, 350236, 350237, G02B 2110

Patent

active

039307131

ABSTRACT:
An incident light illumination device or instrument for generating dark and light field illumination, wherein at least one optical component is used in a region where the dark field and the light field illumination beams are kept in separate zones. The inner zone is traversed by the light field beam and is endowed with an index of refraction other than the outer zone which is traversed by the dark field beam. A switchable stop for eliminating the light field beam is provided in the vicinity of the optical component (s). The index of refraction of the inner zone of at least one optical component is selected so that the light source is reproduced in the rear focal plane of a microscope objective. A mirror designed as a rotating body and reflecting from its inside surface is located in the optic path from the optic component to the microscope objective and this mirror solely reproduces the dark field beam as a light ring in a plane on the rear side of the microscope objective.

REFERENCES:
patent: 1943510 (1934-01-01), Bauersfeld et al.

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