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
Distributed multicast packet replication with centralized quality of service
Device chip carriers, modules, and methods of forming thereof
Sampling switch circuit that uses correlated level shifting
Method and system for automatically identifying wireless signal quality of a region
Apparatus and method for multiplying frequency of a clock signal
Control strategies for a multi-mode drive system
Phase-change memory device having multiple diodes
  Randomly Featured Patents
Stent delivery system
Duplicating apparatus
Blood pressure measuring device
Online upgrade of container-based software components
Nonfriction power system for extending/retracting a structure
Electromechanical lock system
Nickel-base superalloy composition and its use in single-crystal articles
Cutting apparatus
Welding mask
Optical waveguide device