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
Process for preparing red cocoa ingredients, red chocolate, and food products
Medical device arm
Method for making an abrasion-resistant steel plate and plate obtained
Deposited conductive layers for leads of implantable electric stimulation systems and methods of making and using
Lock monitoring
Liquid crystal display apparatus
Hanger
  Randomly Featured Patents
Armature winding of electric rotating machine, stator of electric rotating machine and electric rotating machine
Electrical connector
Marker board
Substituted 4-pyrimidone compounds, compositions and methods of use
Apparatus for beating stalk-, stems-and/or sheet-type regenerative raw materials
Viscous fluid heater
Apparatus and method for contactless measurement of coating thickness
Method for operating a pre-crash sensing system in a vehicle having external airbags
Screening apparatus
Testing storage system electronics using loopback