Patents by Inventor Sergey V. Belyaev

Sergey V. Belyaev 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: 5235443
    Abstract: The polarizer comprises a layer of cholesteric liquid crystal with Grandjean structure disposed in the path of the light and in which the light in a given wavelength range is reflected with selective and circular polarization or is transmitted with reversed direction of rotation, and a mirror which reversed the direction of rotation of the circular- polarized light. The component reflected by the mirror is also transmitted. If the liquid crystal layer is concentric with the source of natural light and the mirror is spherical, the result is a source of circular polarized light. A projection system is obtained by a combination of two of the aforementioned polarizers, one serving as a polarizer and one as an analyzer, and an interposed liquid crystal display cell for modulating the intensity of the polarized light.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: August 10, 1993
    Assignees: Hoffmann-La Roche Inc., NIOPIC Moscow Research and Production Association
    Inventors: Mikhail I. Barnik, Sergey V. Belyaev, Jurg Funfschilling, Nikolai Malimonenko, Martin Schadt, Klaus Schmitt