Carl Zeiss Jena Gmbh

Lothar Schreiber

Werner Kleinschmidt

Manfred Matthae

Karl-Heinz Geier

Andreas Faulstich

Wilfried Andrae

Reed Werlich

Jochen Taubert

Rudolf Hergt

Peter Goernert

A high-aperture objective comprising a first lens L with positive refractive power f and a second lens L with negative refractive power f wherein the focal length ratio between the two lenses is in the range of &minus;0.4<(f /f )<&minus;0.1 and the total refractive power /f /f is greater than zero, two positive lenses L L whose ratio diameter d d to focal length f f satisfies the condition greater than 0.3 and less than 0.6:0.3<d /f <0.6, 0.3<d /f <0.6, a negative lens L and a collective lens L wherein the negative lens faces the front group and the focal length ratio of L and L f /f is between &minus;0.5 and &minus;2:&minus;0.5<f /f <&minus;2.

High aperture objective lens

In a Faraday microscope for examining specimens with stray magnetic fields in a reflected light beam path with a magnetic indicator film arranged in front of the specimen, the influence of the specimen on the indicator film is evaluated with the indicator film arranged as the termination of the microscope objective, the indicator film advantageously being arranged on an optically transparent substrate. The indicator film and substrate are taken into account in the optical calculation of the microscope objective.

Faraday microscope with magneto-optical indicator as terminating element

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Jena, Germany

Lothar Schreiber