Patents by Inventor Jeroen Dragt

Jeroen Dragt 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).

  • Laser sensor module for self-mixing interferometry
    Patent number: 11828594
    Abstract: A laser sensor module includes a first laser source configured to emit first modulated light, the first modulated light being modulated laser light. The laser sensor module further includes circuitry configured to drive the first laser source with a first modulated driving current to cause the first laser source to emit the modulated laser light, a detector configured to detect the modulated laser light, which induces a photocurrent with variations resulting from modulation of the modulated laser light, and a second laser source configured to emit second modulated light. The circuitry is further configured to drive the second laser source with a second modulated driving current to cause the second laser source to emit the second modulated light. The detector is configured to detect the second modulated light. The circuitry is configured to adapt the amplitude of the second modulated driving current to induce a contribution to the photocurrent.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: November 28, 2023
    Assignee: TRUMPF PHOTONIC COMPONENTS GMBH
    Inventors: Hans Spruit, Jochen Hellmig, Alexander Marc Van der Lee, Jeroen Dragt, Pieter Hoeven
  • LASER SENSOR MODULE FOR SELF-MIXING INTERFEROMETRY
    Publication number: 20220082369
    Abstract: A laser sensor module includes a first laser source configured to emit first modulated light, the first modulated light being modulated laser light. The laser sensor module further includes circuitry configured to drive the first laser source with a first modulated driving current to cause the first laser source to emit the modulated laser light, a detector configured to detect the modulated laser light, which induces a photocurrent with variations resulting from modulation of the modulated laser light, and a second laser source configured to emit second modulated light. The circuitry is further configured to drive the second laser source with a second modulated driving current to cause the second laser source to emit the second modulated light. The detector is configured to detect the second modulated light. The circuitry is configured to adapt the amplitude of the second modulated driving current to induce a contribution to the photocurrent.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 17, 2022
    Inventors: Hans Spruit, Jochen Hellmig, Alexander Marc Van der Lee, Jeroen Dragt, Pieter Hoeven