Abstract: The microsurgical microscope system with a stand with three parallelogram linkages and a microscope arranged thereon is characterized in that a second parallelogram linkage and a third parallelogram linkage have a common bar inclined at an angle of approximately 30° to 60° to the vertical.

Abstract: The microsurgical microscope system with a stand with three parallelogram linkages and a microscope arranged thereon is characterized in that a second parallelogram linkage and a third parallelogram linkage have a common bar inclined at an angle of approximately 30° to 60° to the vertical.

Abstract: The observation instrument for a stereoscopic operation microscope, with input connections (1) for the two beam paths (2, 7, 19) of the operation microscope, with instruments (8) for connecting observation tubes for the main observer, with display-screen units (11) and projection instruments (13) for projecting the images from the display-screen units (11) into the observation beam paths (2, 7, 19), with instruments for connecting video cameras and with instruments (10) for connecting tubes for a co-observer, is distinguished in that the following are arranged in each of the two beam paths behind the input connections (1), as viewed in the direction of the beam paths (2, 7, 19): a first beam splitter (3) for deviating a part of the light of the observation beam path into a video camera, behind this a switchable shutter (4) for attenuating and/or blocking the light of the observation beam path, and behind this an optical element (21, 23) with a second beam splitter (22), which splits the light of the observati

Abstract: The invention relates to an operating microscope provided with at least one motor for a magnification adjustment (zoom 1), a distance or focus adjustment (focus 6), an X adjustment or canting (7) and a Y adjustment or tilt (8), in which the zoom adjustment serves as setting signal for the focus, the X and/or the Y adjustment both as to position as well as to speed (FIG. 1).

Abstract: A lower frequency clock signal is supplied to a CCD line sensor. The step-like test signal detected by a scanning circuit is converted by means of a defining circuit and supplied to an evaluation circuit. The position of a light bar on a sensor is accurately determined by comparison with a higher frequency clock signal.