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










Image Number 7 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
Computer system and volume migration control method using the same
Methods and systems for providing a business repository
Method for processing power headroom and terminal thereof
Method and system for distributing ringback files
Pressure-sensitive adhesive composition having an improved release behavior
Dual work function recessed access device and methods of forming
Method and device for evaluating evolution of tumoural lesions
  Randomly Featured Patents
Flexible multi-area memory and electronic device using the same
Sheet type felt
Cutting tool and throw-away insert therefor
Light source with only two major light emitting bands
Process for the catalyzed fluorination of haloalkyl aromatic compounds
Catalytic layer-electrolytic membrane assembly, transfer sheet, and production process thereof
Transmission mount assembly
Reference potential generator and a semiconductor memory device having the same
Method for indicating the location of video hot links
Induced ionic reaction device with radial flow