Patents Assigned to Illumitech Inc.
  • High-brightness LED-phosphor coupling
    Patent number: 7108386
    Abstract: A high brightness LED phosphor coupling device. A semiconductor light source is encapsulated by a medium of first index of refraction, a layer of phosphor surrounded by a second medium of second index of refraction of optical index less than the first index and a light coupler for redirecting most of the light from the light source to an area of the phosphor about equal to the area of the light source multiplied by the square of the ratio of the first to the second index of refraction.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 19, 2006
    Assignee: Illumitech Inc.
    Inventors: Benjamin A. Jacobson, Robert D. Gengelbach
  • Compact non-imaging light collector
    Patent number: 7068446
    Abstract: A nonimaging optical system for processing a first and second light distribution. The nonimaging optical system includes at least two refractive surfaces, at least one reflective surface nearer to the first light distribution along at least one ray path than the nearer of the two refracting surfaces and the reflective surface and the refractive surfaces cooperating to redirect light edge rays of the first light distribution into the neighborhood of the edge of the second light distribution with a single reflection from the reflecting surface.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: June 27, 2006
    Assignee: Illumitech Inc.
    Inventors: Benjamin D. Jacobson, Robert D. Gengelbach
  • Compact non-imaging light collector
    Publication number: 20040264004
    Abstract: A nonimaging optical system for processing a first and second light distribution. The nonimaging optical system includes at least two refractive surfaces, at least one reflective surface nearer to the first light distribution along at least one ray path than the nearer of the two refracting surfaces and the reflective surface and the refractive surfaces cooperating to redirect light edge rays of the first light distribution into the neighborhood of the edge of the second light distribution with a single reflection from the reflecting surface.
    Type: Application
    Filed: May 4, 2004
    Publication date: December 30, 2004
    Applicant: Illumitech Inc.
    Inventors: Benjamin D. Jacobson, Robert D. Gengelbach
  • High-brightness LED-phosphor coupling
    Publication number: 20040228115
    Abstract: A high brightness LED phosphor coupling device. A semiconductor light source is encapsulated by a medium of first index of refraction, a layer of phosphor surrounded by a second medium of second index of refraction of optical index less than the first index and a light coupler for redirecting most of the light from the light source to an area of the phosphor about equal to the area of the light source multiplied by the square of the ratio of the first to the second index of refraction.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 18, 2004
    Applicant: Illumitech Inc.
    Inventors: Benjamin A. Jacobson, Robert D. Gengelbach