Patents by Inventor David Gerard Jenkins

David Gerard Jenkins 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).

  • Nonimaging optical concentrators and illuminators
    Patent number: 5971551
    Abstract: A nonimaging concentrator (or illuminator) of light. The concentrator (or illuminator) has a shape defined by dR/d.phi.=Rtan.alpha. where R is a radius vetor from an origin to a point of reflection of a light edge ray from a reflector surface and .phi. is an angle between the R vector and an exit aperture external point of the concentrator (illuminator) and coordinates (R, .phi.) represent a point on a reflector curve and .alpha. is an angle the light edge ray from an origin point makes with a normal to the reflector curve. The reflector surface allows the light edge ray on the reflector curve to vary as a function of position. In the concentrator an absorber has a shape variable which varies with position along the absorber surface.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: October 26, 1999
    Assignee: ARCH Development Corporation
    Inventors: Roland Winston, David Gerard Jenkins