Ernst Leitz Wetzlar Gmbh

Guenter Reinheimer

Norbert Gaul

Winfried Kraft

Robert Lisfeld

Karl Wieber

Peter Euteneuer

Hans-Werner Stankewitz

Herbert Leiter

Hans Determann

Peter Weimar

Herbert Koch

Werner Nickel

Walter Froboese

Walter Voigt

Andreas Hund

Revolving nose piece for optical components and process for adjusting

Process and device for photographing microscopic objects

A modular device (5) for an optical device, such as a microscope (1), is described. This device has adjacently disposed mountings (24a, 24b) for optical systems which can be introduced alternately into the illumination beam path (2) or optical axis (2a) of the microscope by use of a pull rod (11) provided on the modular device (5). At least one of the mountings (24a) is capable of being uncoupled from the pull rod (11), so that the relative spacing of two mountings (24a, 24b) can be altered. Additionally an optical element (17), for example, a compensating plate disposed in the microscope, can be pivoted into the optical axis (2a). By using the modular device (5), a rapid switch-over from traditional methods of microscopy to, for example, investigations utilizing fluorescence microscopy and vice versa, without any effect on the image section and the image sharpness, is possible without undertaking adapting operations or reconstructing the microscope.

Modular device

A microscope support foot (10) includes a central portion (14) and two lateral portions (15, 16), which form receiving chambers (19, 20, 21) by means of separating walls (17, 18) extending as far as a base plate (23). The optical components for an illumination arrangement (28) are disposed in receiving chamber (20) so as to be protected from dust by a seal (25), and the electronic components are disposed in a heat-dissipating manner in the receiving chamber (21), so that the heat-emitting components are in contact with the base plate (23) which is made of heat-dissipating material. This base plate and the lateral portion (16) have ventilation slits (42, 42'). A drive unit (36) for the adjustment of the successviely arranged aperture stop and light field stop (30, 31) is secured in the receiving chamber (19) in such a manner that the adjusting arrangement is accessible from outside and is disposed at a convenient distance from a focussing arrangement (13).

Microscope support

Transmitted light and/or incident light inverse microscope

A device for checking the adjustment of the light source in an incident light microscope includes a centering cylinder having a configuration similar to an objective which is set into the revolving lens turret and can thus be moved into the path of the illuminating beam. The centering cylinder has a bottom plate with markings, for example, in the form of concentric rings and cross-hairs, located approximately in the rear focal plane of the lenses. The light source is thereby imaged on the markings. Observation is effected through an orifice in the jacket of the centering cylinder, which may be rotated around the optical axis. Focusing and adjustment may then be affected by adjusting the collecting lens and/or the lamp housing.

Device for checking the light source adjustment in an incident light

Microscope frame

An incident light, bright-field, Kohler illuminating device for a microscope which reflects an illuminating beam into one half of the pupil of a microscope objective, which avoids vignetting of the field of vision without requiring especially short objectives, which can provide illumination with polarized light, and which can be added to any transmitted light microscope including microscopes with revolvable turrets without requiring a specially designed microscope stand.

Incident light, bright-field Kohler illuminating device

A semi-automatic coarse-fine focusing apparatus for microscopes adjusts the focus of a microscope through rotation of a shaft which rotates a pinion that drives a rack to reciprocate. The rack carries a specimen being observed by the microscope. The shaft which rotates the pinion is in turn driven by a gear that is meshed with a helix formed on a cylinder by a helical thread disposed therearound. The helix is non-rotatably mounted on another shaft that includes a knob which is manually turned to turn the helix and thus rotate the gear for coarse adjustment. The helix is preferably rigidly mounted on the shaft and the shaft is slidable. One arm of a bell crank engages an end face of the helix to reciprocate the helix and thus rotate the gear for fine adjustment. The other arm of the bell crank is engaged by a cam which pivots the bell crank according to the position of the cam. The position of the cam is determined by an electric motor which is preferably controlled by signals that vary with image contrast. Other signals may be generated by a shutter which has apertures which correspond to various positions of the cam.

Semi-automatic coarse-fine focusing apparatus for microscopes

Growing community of inventors

Biebertal, Germany

Guenter Reinheimer