Abstract: The present invention is directed to a motor-operated optical shutter for opening and closing the illumination beam path in optical devices. The optical shutter, according to the invention, for the illumination beam path in optical devices comprises a mounting unit which is provided with a diaphragm aperture, a stepper motor which is mounted at the mounting unit, and a shutter element which is connected to the motor shaft of the stepper motor for opening and closing the diaphragm aperture. A two-phase stepper motor with a large full step angle is preferably used. The two-phase stepper motor is connected to a control unit and carries out the required movement of the shutter element at a short distance from the motor shaft. The solution according to the invention provides a very economical and simple optical shutter for optical devices.

Abstract: In a method for electronic image rectification in pixel-by-pixel scanning of a substrate by a bundled electromagnetic beam, the pixels are read out one after the other in readout intervals of constant predetermined duration. In order to improve image quality, the deviation between a reference scanning movement and an actual scanning movement carried out on the reference substrate is initially determined in a calibration process, for example, by a reference substrate with a known geometric surface structure. Depending on this deviation, a delay interval is determined for a pixel and the start of the readout interval of this pixel or of the subsequent pixel is delayed by this delay interval. The information about the delay interval is stored. In an analysis process for examining a substrate, the stored information about the delay interval is accessed for the pixel, and the delay interval is added before or after the readout interval.

Abstract: A method and an arrangement for detecting the position of the plane XY of an object, which plane XY is to be scanned, and for its positioning in the focal plane X′Y′ of a laser scanner, preferably for a laser scanning microscope. According to the disclosure, it is provided in a method of the type described above that, after a rough orientation of the object carried out by placing on an object holder, a laser beam is directed successively in time to at least three different points P1, P2 . . . Pn located in the scan plane XY of the object and, in doing so, each of the reflections proceeding from the points P1, P2 . . .

Abstract: Arrangement for controlling and/or displaying microscope functions, preferably in an inverted microscope, wherein a display is provided at or near the eye level of a user, and the display can be removed. The adjustment and/or storage of microscope functions is carried out via the display. In a method for controlling microscope functions, an automatic switching of the light source and/or illumination optics is carried out to pre-stored values and/or positions when a reflector turret is switched.

Abstract: In a method for electronic image rectification in pixel-by-pixel scanning of a substrate (2) by means of a bundled electromagnetic beam, the pixels (7) are read out one after the other in readout intervals (R) of constant predetermined duration. In order to improve image quality, the deviation between a reference scanning movement and an actual scanning movement carried out on the reference substrate (S0) is initially determined in a calibration process, for example, by means of a reference substrate (S0) with a known geometric surface structure. Depending on this deviation, a delay interval Dn(n=0 . . . N) is determined for a pixel (7) and the start of the readout interval (R) of this pixel (7) or of the subsequent pixel is delayed by this delay interval Dn. The information about the delay interval (Dn) is stored.

Abstract: A microscope is disclosed with a stage which is adjustable in coordinates X, Y and/or Z, with a drive for stage adjustment and with a control circuit for presetting different adjusting speeds. In a microscope of the type mentioned above, a device is provided for showing the given adjusting speed during the adjustment of the stage in at least one of coordinates X, Y, Z. Therefore, it is advantageously possible during the adjustment and/or programming of the microscope to visually perceive the adjusting speed or to display speed gradations which are not otherwise detectable in the eyepiece.