×

Lighting unit having a plurality of curved surface elements

  • US 7,441,929 B2
  • Filed: 08/30/2005
  • Issued: 10/28/2008
  • Est. Priority Date: 08/30/2004
  • Status: Expired due to Fees
First Claim
Patent Images

1. Lighting unit comprising:

  • at least one light source;

    at least one light guide following and at least regionally surrounding the source, said light guide including at least one light exit surface facing away from the source and centrally located at least approximately, surrounded by at least one externally located light exit surface, whereinsaid at least one externally located light exit surface comprises a plurality of surface elements adjoining each other with or without offset, andsaid surface elements are surface regions of curved solids;

    said light guide including an envelope which is rotationally symmetrical with respect to an optical axis and wherein a diameter of a central light emitting surface is about 40% of the diameter of the light grid.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×