The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 1979
Filed:
Sep. 28, 1977
Hans-Werner Stankewitz, Steindorf, DE;
Ernst Leitz Wetzlar GmbH, Wetzlar, DE;
Abstract
A process and apparatus is disclosed for automatically realizing Kohler's Principle of Illumination in microscopes and the like in which the illumination means of the microscope is adjusted to fully take Kohler's Principle of Illumination into account. Optimization is achieved by sensing the extent of illumination, preferably with photoelectric type sensors, which generate signals proportional to the brightness of illumination. The signals are converted into control signals in a converter stage which in turn control motor means which serve to adjust the openings of at least one diaphragm and/or the focal length of an illumination pancratics in the system. The sensing means are adjustably positioned so that it may be moved depending on the objective and magnification used.