Patents by Inventor Jens-Peter Ruske

Jens-Peter Ruske has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6697394
    Abstract: A directly modulatable laser comprising an active medium inside a laser cavity formed by a resonator mirror and an out-coupling mirror, and a pump light source exciting the active medium. It is characterized in that the active medium generates radiation of two wavelengths (&lgr;1 and &lgr;2) and the resonator mirror is constructed as a controllable reflector by which the reflectivity is controllable for each of the two wavelengths (&lgr;1 and &lgr;2) and the controllable reflector is connected with a control unit, wherein the reflection factor is controlled in such a way that the inversion density of the electrons which is generated in the active medium is constant and the light output of one of the wavelengths ((&lgr;1) is controllable between a minimum value and a maximum value according to an applied control signal, wherein the control of the two wavelengths ((&lgr;1 and &lgr;2) is carried out in push-pull.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: February 24, 2004
    Assignee: Jenoptik LDT GmbH
    Inventors: Andreas Tuennermann, Holger Zellmer, Jens-Peter Ruske
  • Publication number: 20010014107
    Abstract: A directly modulatable laser comprising an active medium inside a laser cavity formed by a resonator mirror and an out-coupling mirror, and a pump light source exciting the active medium. It is characterized in that the active medium generates radiation of two wavelengths (&lgr;1 and &lgr;2) and the resonator mirror is constructed as a controllable reflector by which the reflectivity is controllable for each of the two wavelengths (&lgr;1 and &lgr;2) and the controllable reflector is connected with a control unit, wherein the reflection factor is controlled in such a way that the inversion density of the electrons which is generated in the active medium is constant and the light output of one of the wavelengths ((&lgr;1) is controllable between a minimum value and a maximum value according to an applied control signal, wherein the control of the two wavelengths ((&lgr;1 and &lgr;2) is carried out in push-pull.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 16, 2001
    Applicant: SCHNEIDER Laser Technologie AG;
    Inventors: Andreas Tuennermann, Holger Zellmer, Jens-Peter Ruske
  • Patent number: 5838869
    Abstract: The invention concerns an integrated-optical channel waveguide and its applications as switch, modulator, and sensor. The channel waveguide is placed into or onto the flat substrate material and features a geometrically narrowly delimited channel-shaped structure, where the delimitation is located vertical to the propagation direction of the light. A single-mode integrated-optical wideband channel waveguide is described which is capable of guiding, e.g., light from the entire visible wavelength range in single-mode and effectively, that is, at low optical attenuation, and which thus represents a real single-mode white light channel waveguide. If required, the light can be switched and modulated, wavelength-dependent, or wavelength-independent, e.g. by electro-optical techniques. The channel waveguide is fabricated by means of basically known processes, e.g. by changing the refractive index.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: November 17, 1998
    Assignee: LDT GmbH & Co. Laser-Display-Technologie KG
    Inventors: Andreas Rasch, Matthias Rottschalk, Jens-Peter Ruske, Volker Groeber
  • Patent number: 5832155
    Abstract: The invention concerns an integrated-optical junction splitter, in particular for applications in the wavelength range of visible light, which ensures a spatial and wideband combination of light in a wavelength spectrum .DELTA..lambda. greater than 75 nm (value given applies to short-wave visible light). In the case of a usable wavelength range comprising the entire spectrum of visible light, the junction splitter is a white light junction splitter. The junction splitter consists of at least three channel waveguides, at least one of which must be a single-mode integrated-optical wideband channel waveguide (SOWCW). Two channel waveguides each have a respective input and are combined into a common SOWCW at their outputs in a coupling point, which common SOWCW features a common light output at its end.This wideband junction splitter is used as a wavelength-selective or wavelength-independent switch or modulator, in interferometric and photometric devices, sensors, and microsystem-technical solutions.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: November 3, 1998
    Assignee: LDT GmbH & Co. Laser-Display-Technologie KG
    Inventors: Andreas Rasch, Matthias Rottschalk, Jens-Peter Ruske, Volker Groeber
  • Patent number: 5802222
    Abstract: Color image generation systems are disclosed for the reproduction of real or virtual, two-dimenional or three-dimensional, color, or monochrome images and their applications, in particular for television or video applications, and printing applications. Integrated-optical structures are used on a mount, in particular a substrate. An image is generated by deflecting color light beams generated into a viewing space, which deflection is effected in synchronism with color setting and intensity- or amplitude modulation of the light. All electronic and optical assemblies for color image generation may be integrated on a mount either monolithically or in hybrid fashion. The color generation system may be implemented as an encased module.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: September 1, 1998
    Assignee: LDT Gmb&H Co. Laser-Display-Technologie KG
    Inventors: Andreas Rasch, Matthias Rottschalk, Jens-Peter Ruske, Volker Groeber