Leica Microsystems Inc.

Leica Microsystems Cms Gmbh

Reichert, Inc.

Scott W Parks

Russell J Bonaventura

Werner Holbl

Werner Hoelbl

David G Kelkenberg

Jasna Roeth

A spatially compact, lightweight positioning system for guiding an operator in positioning an ophthalmic instrument relative to an eye of a test subject has first and second light sources and an area detector spaced apart from a measurement axis of the instrument and from each other for providing positioning images which may be evaluated relative to stored calibration image information to determine current position of the instrument relative to the eye. The first and second light sources may fit within a lateral distance less than or equal to 25 mm. First and second illumination axes associated with the light sources may reside in a horizontal plane containing the measurement axis, and an observation axis of the area detector may reside in a vertical plane containing the measurement axis. The light sources and the area detector may be intersected by a plane which is normal to the measurement axis.

Positioning system for ophthalmic instrument

An interchangeable microscope stage drive assembly, including a microscope stage, and, a drive mechanism detachably secured to the microscope stage at more than one location of the stage.

Interchangeable microscope stage drive assembly

The invention includes an apparatus for controlling a microscope stage assembly having a rod for moving the stage in two directions. The rod is detachably secured to the microscope stage assembly. The rod includes at least one substantially circular stick with an attachment end and a gripping end. The attachment end is arranged to be detachably secured to the microscope stage assembly. The invention also includes an interchangeable microscope stage movement device for providing X and Y movement of a sample. The device includes a microscope stage assembly and a joystick detachably secured to the stage assembly at more than one location of the stage assembly.

Microscope stage apparatus and movement means

The present invention broadly comprises a device, such as a slider, for performing phase contrast microscopy, the device containing a plurality of at least three phase contrast annuli. The slider is received into a microscope condenser mounted under a microscope stage and that is adapted to receive the device and align the device such that a phase contrast annulus is aligned with an appropriate microscope objective phase ring. The invention also comprises printed or engraved indicators or other markings indicating whether the bright field aperture or a particular phase contrast annulus is in position in the illumination path of the microscope. The invention further comprises a device for preventing the removal of the device from the condenser.

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East Amherst, NY, United States of America

Scott W Parks