Now showing 1 - 10 of 10
  • Patent
    Vorrichtung zur Untersuchung von Oberflaechentopographien mittels Streifen-Triangulation
    ( 2002)
    Koerner, K.
    ;
    Holger, F.
    ;
    Krahn, A.
    ;
    Puder, J.
    The description refers to a device for examining the topographies of light scattering object surfaces, comprising a light source, a Fizeau interferometer consisting of a plane mirror surface and a beam splitter surface inclined in relation to said plane mirror surface, for the generation of an interference fringe pattern, and an image receiver. The invention is characterized by the fact that the beam splitter surface of the Fizeau interferometer is arranged downstream of an optical element having an optically active surface with total reflection effect for bundles reflected several times in the Fizeau interferometer. Alternatively the beam splitter surface of the Fizau interferometer is arranged downstream of an optically active surface having a total relection effect for bundles reflected several times in the Fizeau interferometer in such a way that the beam splitter surface and the optically active surface are surfaces of a prism.
  • Patent
    Verfahren und Apparat zur Erzeugung einer 3D-Punktwolke fuer die Topometrie (3D-Videometrie) oder die 3D-Vision fuer Multimedia- Applikationen
    ( 2002)
    Koerner, K.
    ;
    Nyarsik, L.
    NOVELTY - The arrangement includes a light source, a lighting lens for imaging a rastered structure, such as a pattern or a micro-lens array, at least one recording lens, a body and/or a scene to be processed, and a recording camera. The recording lens is associated on the image side with an array of micro-optic components or a rastered image sensor, which is associated with a second lens in the image space. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is provided for a corresponding, three-dimensional pixel cloud production method. USE - For topometry, three-dimensional vision for multimedia application, or measuring of object and scene in object space, especially for reverse engineering or for production of three-dimensional film effects. ADVANTAGE - Enables improved measuring accuracy and depth, and enables three-dimensional reproduction of corresponding data.
  • Patent
    Verfahren und Apparat zur Erzeugung von 3D-Bildern fuer die visuelle 3D-Wahrnehmung auf der Basis von virtuellen oder reellen Bildern
    ( 2001)
    Koerner, K.
    ;
    Nyarsik, L.
    NOVELTY - The method involves using a rastered, computer-controlled and addressable light generating structure, e.g. an array of micro-optical components, e.g. a microlaser array or a microfiber array with fiber-coupled, computer-controlled light sources of different wavelengths or spectral distribution to represent a real or computed 3D object. The 3D image information exists in the form of a digital data set as 3D point cloud. DETAILED DESCRIPTION - A first objective with a telecentric output is associated with the light generating structure and a second micro-optical array, which is connected to a computer-controlled linear scanner, which is further associated with a second objective for generating virtual or real images. An INDEPENDENT CLAIM is also included for an arrangement for carrying out the method. USE - For of generating 3D images for visual 3D perception based on virtual or real images for 3D vision in 3D video, 3D TV or 3D multimedia. ADVANTAGE - Does not require laser radiation or special spectacles and achieves improved depth of focus and resolution.
  • Patent
    Vorrichtung und Verfahren zur optischen Profilmessung, insbesondere an gekruemmten Objektoberflaechen
    ( 2001)
    Koerner, K.
    ;
    Nyarsik, L.
    The system directs light from a source (1) via a linear transmission grating (2) and telescope (3,4) at the surface (5) where an image (G') of the grating is formed. The reflection passes through another telescope (6,7) to a charge-coupled device matrix (8) whose receiving surface is conjugated with the plane of the grating image. The periodic distribution of brightness is generated by the beam incident at an angle of more than 45 deg. to the normal at the curved surface. The matrix receives a sharply focused image of the region about the line of intersection. USE - On e.g. cylinder block of vehicular combustion engine. Surface roughness is also measurable in micrometric range at low cost.
  • Patent
    Vorrichtung und Verfahren zur optischen Erfassung der Oberflaechengestalt eines Koerpers
    ( 1999)
    Koerner, K.
    ;
    Nyarsik, L.
    NOVELTY - The system has an objective (16) assigned to a light source, to produce a light beam (B), at least one grid (19) arranged in the beam path on the objective. A first imaging system (22) images the grid on a measuring plane (F3) intersecting or at least partly coinciding with the body surface. A second imaging system (32) receives reflected or scattered light. A CCD camera (36) is used to take the image produced by the second imaging system. USE - Optical determination of shape of surface of a body. Reproduction of 3D shape of surface of body. ADVANTAGE - Larger bodies can be specified regarding their surface structure, depending on their shape. Fine or coarse structural surface measurement is significantly improved. DESCRIPTION OF DRAWING(S) - The figure shows the optical system. Objective 16 Grid 19 First imaging system 22 Surface of object 26 Second imaging system 32 CCD camera 36 Light beam B Measuring plane F3
  • Patent
    Vorrichtung und Verfahren zur Abstands- und/oder Glanzgradmessung
    ( 1999)
    Koerner, K.
    NOVELTY - An optical system (5) directs a first light beam (B1) from a first direction onto a region of the surface (A) and receives it again. The optical system directs a second light beam (B2) from a second direction to the same region of the surface, and receives it again. The device superimposes both received light beams or their derived signals, mirror inverted with respect to each other in at least one direction. USE - For measuring three-dimensional profiles of glass panes for windows for motor vehicles, high speed rail vehicles or aircraft. ADVANTAGE - Precise and reliable measurement of reflective surfaces.
  • Patent
    Vorrichtung und Verfahren zur Pruefung der Gestalt einer Oberflaeche eines zu vermessenden Objektes
    ( 1998)
    Koerner, K.
    ;
    Fritz, H.
    ;
    Nyarsik, L.
    ;
    Spur, G.
    ;
    Uhlmann, E.
    The description relates to a device for the topographical inspection of the surfaces of an object to be tested. The invention is characterized by the fact that it comprises the following components: - at least one light source, - at least one light-distributing surface, - at least one projection stage and - one detector for electromagnetic radiation.
  • Patent
    Verfahren und Vorrichtung zur Abstands- und Profilmessung
    ( 1997)
    Koerner, K.
    ;
    Nyarsik, L.
    The method employs three laser sources (1-3) of different wavelengths coupled into a common fibre (4), from the end of which a conical wave enters the glass block (5) of a triangulation interferometer. A beam splitting layer (6) sends symmetrical partial beams through a collimator (9) on to the surface (10) under examination. Precisely one zero-order fringe per wavelength is imaged (11) on a holographic diffraction grating (12) associated with a lens (13) and CCD matrix camera (14). The measurement plane through in-phase points is represented by a stationary electromagnetic field and optically conjugated. USE/ADVANTAGE - On finely machined metallic surfaces such as toothed wheels or turbine blades. Highly improved precision is achievable with better lateral resolution over wider range.
  • Patent
    Zweistrahl-Interferometer
    ( 1990)
    Koerner, K.
    ;
    Ludovit, N.
    ;
    Puder, J.
    ;
    Stadthaus, W.
    ;
    Dolkeit, T.
    Die Erfindung betrifft ein Zweistrahl-Interferometer zur Messung der Gestalt insbesondere ultrapraezisionsbearbeiteter Oberflaechen, nach dem Interferenzprinzip. Erfindungsgemaess begrenzen am Ausgang eines Interferometers mit einer zur Referenzstrahlenbuendelachse geneigten Prueflingsstrahlenbuendelachse zwei teilverspiegelte Flaechen einen Raum, die im Winkelbereich < 1 Grad keilfoermig zueinander angeordnet sind, wobei der Neigungswinkel der Buendelachsen und der Winkel zwischen den beiden teilverspiegelten Flaechen, die die Aussenflaechen eines quer verschiebbaren Glaskeiles bilden koennen, so aufeinander abgestimmt sind, dass zwischen der zweiten teilverspiegelten Flaeche und einem Objektiv durch eine Zickzack-Reflexion zwischen den beiden teilverspiegelten Flaechen und durch eine Transmission dieser von jeweils einem Teilstrahlenbuendel, Teilstrahlenbuendel-Paare bestehen, die genau aus je einem Teilreferenz-Strahlenbuendel und einem Teilprueflings-Strahlenbuendel gebildet sind.D urch Verschiebung des Glaskeiles wird es moeglich, die Phase im Interferogramm definiert zu verstellen. Durch eine geeignete Teilverspiegelung des Glaskeiles wird ein hoher Kontrast im Interferogramm erreicht.
  • Patent
    Verfahren und Anordnung zur Messung der Mikrogestalt technischer Oberflaechen
    ( 1989)
    Koerner, K.
    ;
    Fritz, H.
    The invention relates to a process and an arrangement for the measurement of the microstructure of industrial surfaces according to the principle of the interference microscope. According to the invention, the virtual mirror planes existing in the object and reference beam chamber are projected by a different offset in optical conjugation; the location of the beam splitting and recombination are spatially separated and a correction is performed in such a way that the object and reference ray bundles propagate in a common beam chamber in parallel to each other. This makes it possible to eliminate any undesired circular interference structures which may occur during the interferometric measurement and makes a body reference surface superfluous.