摘要:
The invention relates to a method of determining measurement-point position data and a device for measuring the magnification of an optical beam path. In the method described, a laser beam is inserted via an insertion element (32a) into the beam path of a microscope. At the end of this beam path, a beam splitter (4c) splits the laser beam off again and directs it on to a position sensor (45a). The point at which the measurement beam is incident depends on the magnification of the beam path optics (8, 13). The final value of the magnification can thus be simply determined. The value of the magnification is important for the user in order to enable the user to make a definite assessment of the area observed. Also described are various related developments and details of the invention.
摘要:
A stereomicroscope has a left and a right stereo radiation path and an adjusting device for selecting a stereo base. A main lens is arranged between an object to be observed and the adjusting device, which may be designed as an opto-mechanical switching device. The arrangement allows an integrated structure with low light losses.
摘要:
An arrangement for determining the position of a surgical microscope uses signal transmitters and signal receivers. Light emitting diodes that emit coded light signals and light receptors for receiving the coded light signals are arranged in various locations in space. Reflectors having narrow-bond reflection characteristics are arranged on the microscope so that the light reflected can be identified.
摘要:
The invention is directed to a surgical microscope in which, to determine the distance between the microscope (8, 13) and the object (22), the travel time of a beam of light (57c) emanating from the microscope and reflected by the object is determined. The travel time is determined by phase measurement or by interference matching. In the case of direct phase measurement, modulated light is used. In the case of interference matching, partly coherent light is used. In order to ensure high accuracy over wide measurement range, the two measurement methods are preferably used in combination.
摘要:
A stereomicroscope has a left and a right stereo radiation path and an adjusting device for selecting a stereo base. A main lens is arranged between an object to be observed and the adjusting device, which may be designed as an opto-mechanical switching device. The arrangement allows an integrated structure with low light losses.
摘要:
A stereomicroscope has a left and a right stereo radiation path and adjusting means for selecting a stereo base. The main lens is arranged between an object to be observed and the adjusting means, which are preferably designed as opto-mechanical switching means. This arrangement allows an integrated structure with low light losses to be obtained.
摘要:
The invention concerns a method and device for determining the direction of an object (10) which emits or reflects optical radiation. An optical element (14) which structures the wavefront of the radiation converts the conventional dot-type image (20) into an intensity distribution (14′) with more than one maximum on a locally resolving opto-electronic detector (13). From the intensity distribution (14′) and the structure function of the optical element (14), the direction of the object (10) can be determined with a high degree of accuracy over a wide measurement range. In addition, this gives a design with a shorter optical path length and very few optical components.
摘要:
The invention concerns an imaging system comprising a first device (82) for acquiring image data for an object (93) using light, in particular a microscope, and a second device (94) for acquiring and displaying image data (in particular, of the kind not immediately visible to the eye) for the object (93) using (in particular invisible) radiation, preferably electromagnetic wave or particle radiation such as X-rays (X-ray or CT photographs), MRI or positron radiation. The system is also provided with a superimposition device (95) for superimposing the two sets of image data to form a single image which can be turned towards an observer. The optical parameters of the first device (82), e.g. the microscope and its image distortions, are incorporated in the image to be superimposed, thereby providing the observer with a dimensionally and geometrically accurate display of the two superimposed images.
摘要:
A laser source is used in a geodesic device to improve the emission of laser light, in which the laser diodes emitting multimodal radiation are influenced by a mode-selective component such that the laser radiation emitted by the laser source has monomodal character. An edge emitter or a vertical semiconductor emitter with an external cavity, is hence used, in which a mode selective component is arranged, for example, a monomode fibre or resonator mirror, which has the effect of a mode-selective resonator construction. Components with negative dispersion can be used for pulse compression to compensate for the greater pulse duration generated by the lengthened cavity.
摘要:
An optoelectric angle-measuring device according to the invention has a code carrier having a position code (C1) which can be detected optically as well as a scanning device in the form of a light-sensitive row or area for detecting the position code (C1) and generating a position-dependent scanning signal. The scanning device which is in the form of a scanning film (F1), in particular, surrounds the code carrier or the code carrier essentially completely surrounds the scanning device along a circumference. This provides an extremely accurate angle-measuring device by virtue of the fact that a large part of the position code (C1), in particular even the entire position code (C1), can be detected.