Abstract:
The present invention relates to an afocal zoom system for a microscope with a shutter for controlling the depth of focus of the microscopic image produced by an object, wherein at least one shutter is disposed in front of the first lens group of the zoom system, viewed from the object, in the direction of the beam path passing through the zoom system, and/or at least one shutter is disposed on a lens group of the zoom system the diameter of which can be varied in order to control the depth of focus, without causing vignetting of the edge beams.
Abstract:
The present invention relates to a stereo microscope (20) with a first and a second main beam path (21, 22), the spacing of which defines a stereo base (23), wherein an axis of the microscope (24) extends through the middle of the stereo base (23) parallel to the main beam paths (21, 22), and with an optical beam splitter device (30) for producing an assistant beam path (31) and a documentation beam path (32), wherein the direction of the assistant beam path (31) in a first position is rotated by 180° to the direction of the assistant beam path (31) in a second position of the beam splitter device (30), and the decoupled documentation beam path (32) in both positions of the beam splitter device (30) is in each case perpendicular to the decoupled assistant beam path (31), and wherein in both the first and second positions of the beam splitter device (30) the assistant beam path (31) can in each case be decoupled at least from the first main beam path (21) and the documentation beam path (32) can in each case be decoupled at least from the second main beam path (22).
Abstract:
An endoscope for inspection of an observation cavity, in particular of an observation cavity in which a hot medium and/or infrared radiation is present, has a shaft in which an optical system is arranged. The shaft has an inner shaft and an outer shaft surrounding the latter at a distance, the optical system being arranged in the inner shaft. The shaft is configured in the region of its distal end in such a way that it is substantially opaque to electromagnetic radiation in the infrared spectral range.
Abstract:
A color wheel includes a rotatable disc-shaped carrier to which three or more planar color filter segments are secured in radial fashion about the periphery thereof. The portions of the color filter segments extending beyond the peripheral portion of the carrier form a substantially continuous translucent color ring for being inserted into, and rotated through, a light path. Each of the color filter segments is formed of a continuous sheet of material without any apertures formed therein. The disc-shaped carrier has one or more recesses, or bonding zones, formed therein to receive innermost bonding portions of the color filter segments; these recesses provide stops for aiding in the proper radial and axial positioning of the color filter segments. The bonding portions of the color filter segments are secured to the bonding zone of the disc-shaped carrier by an adhesive. A further recess can be formed in the disc-shaped carrier adjacent each bonding zone to receive the adhesive layer.
Abstract:
A microscope comprising a main objective having a variable focal length and comprising an illuminating unit including a light source and an illuminating optical system for generating an illuminating beam path directed onto the object plane and extending outside the main objective. A unit is provided for centering the illumination dependent on a variation of the focal length of the main objective, and the illuminating optical system is mounted at least in part in a laterally shiftable manner for centering the illumination. In particular, the illuminating optical system has a diaphragm that is mounted in a laterally shiftable manner.
Abstract:
An optical instrument, in particular an endoscope, has a shaft and an inter-changeable head. The interchangeable head is detachably connected to the distal end of the shaft at a coupling point. The instrument also has a first transmission system for distal transmission of illuminating power, and a second transmission system for proximal transmission of image information, the first transmission system and the second transmission system passing through the coupling point. The interchangeable head and/or the coupling point are/is designed in such a way that upon loosening of the interchangeable head image information of perceptively modified quality is transmitted by the second transmission system.
Abstract:
A lighting system for illumination of an observation space, especially an observation space in which a pressurized and/or hot medium is contained, comprises an optical-fiber cable, one end of which can be connected to a light source, and a lighting head, which is connected to the other end of the optical-fiber cable and whose distal end can be introduced into the observation space through an opening in a wall enclosing the observation space. The lighting head comprises a light guide rod made from a pressure and/or temperature-resistant material.
Abstract:
A plug-in unit with integral cable connection to the operating part of an endoscope and plug connections for lamps, mechanical, and/or electronic modules is characterized in that a hollow tube extending to the distal end of the endoscope is inserted into the plug-in unit by the integral cable connection and the operating part and has its proximal end positioned so that it is freely movable in the plug-in unit in such a way that can be conducted out of a closeable bore-hole in the wall of the plug-in unit.
Abstract:
A surgical fluorescence stereomicroscope (1) for detecting and operating on fluorescing areas of an object field (7) is described, which microscope encompasses a first illumination device (2) for irradiating the object field (7) with light in an excitation wavelength region (E). The surgical fluorescence stereomicroscope (1) further encompasses an observation beam path (21) for guiding the reflected and emitted light received from the object field (7), and a first observation filter (9) in the observation beam path (21) which is transparent in the excitation wavelength region (E) and in a fluorescence wavelength region (F). According to the present invention, means (10a to 10c) for controllable attenuation in the excitation wavelength region (E) are additionally arranged in the observation beam path.
Abstract:
A microscope comprising a main objective having a variable focal length and comprising an illuminating unit including a light source and an illuminating optical system for generating an illuminating beam path directed onto the object plane and extending outside the main objective. A unit is provided for centering the illumination dependent on a variation of the focal length of the main objective, and the illuminating optical system is mounted at least in part in a laterally shiftable manner for centering the illumination. In particular, the illuminating optical system has a diaphragm that is mounted in a laterally shiftable manner.