Abstract: A probe head for a coordinate measuring machine has a stylus resiliently suspended in a housing. A sensor arrangement serves for detecting deflections of the stylus relative to the housing. The sensor arrangement comprises at least one Hall sensor having a magnet and a Hall element arranged in a vicinity to each other. When the stylus is deflected, the magnet is laterally passed by the Hall element in a direction defined from the North Pole to the South Pole of the magnet or vice versa. A Hall voltage of changing polarity can be tapped at the Hall element then. A preferably linear range around the polarity change is processed in order to determine the deflection of the stylus.

Abstract: A probe head for a coordinate measuring machine has a stylus resiliently suspended in a housing. A sensor arrangement serves for detecting deflections of the stylus relative to the housing. The sensor arrangement comprises at least one Hall sensor having a magnet and a Hall element arranged in a vicinity to each other. When the stylus is deflected, the magnet is laterally passed by the Hall element in a direction defined from the North Pole to the South Pole of the magnet or vice versa. A Hall voltage of changing polarity can be tapped at the Hall element then. A preferably linear range around the polarity change is processed in order to determine the deflection of the stylus.

Abstract: The invention is directed to a probe for coordinate measuring apparatus. The apparatus includes measuring systems (15, 16, 17) for measuring the deviation of the flexible part (10) of the probe and a damping device damps the flexible part (10) of the probe. The damping device is embodied as at least one friction brake (19, 27) and the friction force of the friction brake is adjustable. The flexible part (10) of the probe can also be blocked by the friction brake (19, 27).

Abstract: The invention is directed to a probe for coordinate measuring apparatus. The apparatus includes measuring systems (15, 16, 17) for measuring the deviation of the flexible part (10) of the probe and a damping device damps the flexible part (10) of the probe. The damping device is embodied as at least one friction brake (19, 27) and the friction force of the friction brake is adjustable. The flexible part (10) of the probe can also be blocked by the friction brake (19, 27).

Abstract: A device for resetting the CCD sensor unit 3 is provided for a camera comprising a CCD sensor unit 4 and a shutter 3 in the imaging beam path. This device for resetting the CCD sensor unit 3 comprises a control unit 5 which resets the CCD sensor unit with a time delay and/or with time monitoring after the opening of the shutter. Two or more such cameras can be combined to form a camera system for recording images which are matched to one another in time. A method is specified for operation of a camera and a camera system, in which the CCD sensor unit is in this case reset after opening of a mechanical shutter 3 in the imaging beam path.

Abstract: The invention relates to a process for providing a bearing of a tilting device, which makes possible a tilt around at least one axis, with a tilting member, a base member, and a bearing situated between these two members. The center of gravity of the tilting member is situated at the pivot point of the bearing. A first portion of the tilting member is arranged above the pivot point, a second portion of the tilting member is arranged below the pivot point, and the weight of the first portion of the tilting member and the weight of the second portion of the tilting member correspond to each other.

Abstract: An electromagnetic drive system drives the oscillating secondary mirror or wobble mirror of a reflecting telescope. The driving force of the drive system is directly proportional to the current and the drive system is digitally controllable. By incorporating a tachometer generator and a contactless operating position measuring unit, it is possible to select such function curves for the leading and trailing edges of the wobble function which will permit a jolt-free drive of the mirror.

Abstract: For the adjustment and mounting of an optical component in an optical instrument, the optical component is held by an adjusting device not forming part of the instrument. After the adjusting process is completed, the component is attached to the instrument by a liquid or pasty substance which solidifies with slight change in volume. The optical component or its mount and the instrument are so developed that a form-locked, force-locked, or adherence-locked attachment is produced between them. The adjusting process can be made objective by a position-resolving receiver; the evaluation of the adjustment image and the carrying out of the adjustment movements can be effected by a computer which can also carry out the entire adjustment process completely automatically. After the firm attachment of the optical component to the instrument, the adjusting device is removed.

Abstract: The invention contemplates a method and apparatus for automatically performing digital measurement of vertex dioptric powers in the principal planes of toric spectacle lenses. A spectacle lens is transilluminated by a parallel-ray bundle of monochromatic light which, after passage through the spectacle lens, is limited by an annular stop in the immediate vicinity of the vertex of the spectacle lens. A beamsplitter divides the light which passes through the spectacle lens into two individual light beams. As a result, an elliptical figure is projected to two planes, in each of which is located at least one self-scanning diode line.

Abstract: Photographic camera light controlling apparatus for driving a light admitting system, comprisingfour stator electromagnetic poles defining therebetween an intervening field space containing a linear path, including first and second transversely opposed poles at one path end and third and fourth transversely opposed poles at the other path end, with said first and third poles on one path side and second and fourth poles on the opposite path side,a field coil mechanism energizable alternately in opposite current flow directions and coordinated to energize said first and fourth poles with one polarity and said second and third poles with the opposite polarity, and alternately vice versa, thereby providing in such field space oppositely polarized electromagnetic fields,a permanent magnet for driving such system, having its permanent poles arranged transversely of the path and forming a surface magnetized permanent magnet with one permanent pole facing said first and third poles and the opposite permanent pole fac

Abstract: Photographic camera shutter apparatus having at least one drivable control part arranged for reciprocation for controlling the photographic light admitted to the camera, e.g. a diaphragm aperture ring or a shutter blade ring, and an electromagnetic driving system for reciprocating the control part, including at least one corresponding assembly having opposed coacting reciprocally energizable electromagnetic field coils stationarily arranged in spaced apart relation and providing an intervening magnetic field space therebetween and movable permanent magnets arranged for reciprocation along such intervening field space in response to the corresponding energization of the stationary field coils and operatively connected for driving the control part in question concordantly for reciprocation thereof, whereby to control the photographic light admitted to the camera in dependence upon the energization of the field coils.