Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Irradiance-redistribution lens and its applications to LED downlights










Image Number 8 for United States Patent #7618162.

An illumination-redistribution lens comprising a thick aspheric lens collecting a high proportion of the luminous output of a compact LED with a quasi-hemispheric pattern. After receiving the highly nonuniform illuminance from the nearby LED, the lower surface refractively deflects these rays into a less diverging angular pattern that results in uniform illuminance on the upper surface of the lens, which itself is shaped so its distribution of slope angles refractively deflects the uniform illuminance distribution into an exiting beam that will produce uniform illuminance on a distant target, such as a table below a ceiling-mounted unit. When square-cut sections of such lenses are laterally arrayed to form a downlight, a uniform rectangular spot will be produced on the target.








 
 
  Recently Added Patents
Apparatus with a local timing circuit that generates a multi-phase timing signal for a digital signal processing circuit
Communication system and data transmission method thereof
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
Vehicle front fender
Progressively discovering and integrating services
Virtual billboards
Method of fabricating CIGS by selenization at high temperature
  Randomly Featured Patents
Shallow trench isolation formation with ion implantation
Ink-jet printing method, ink-jet printing apparatus, and program
Magnetic head having an Fe-Ni-X layer
Keyed receptacle for accessory-host interface
Process for preparing carbapenem compounds
Digital broadcast receiver and digital broadcast reception method
Non-elastic balloon
Room temperature shrinkable coating material
Embedded stressed nitride liners for CMOS performance improvement
Telephone station