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
System, method and program product for guiding correction of semantic errors in code using collaboration records
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
Adjustable voltage regulator with dynamic voltage compensation
Decrementing settings for a range of power caps when a power cap is exceeded
Case for electronic device
Rule-based stimulation program search
Sheet member and method of manufacturing sheet member
  Randomly Featured Patents
Copying method and copier for film
Channel estimator using one or more correlation reference vectors to eliminate data related noise
Infra-red radiant burner
Multi-domain vertical alignment liquid crystal display
Compounds for enzyme inhibition
Safety system for hypodermic syringe and needle
License plate frame
Contemporaneously sharing resources targeted by a library
Player, and source switching method for recording and playback apparatus
Recording head unit, method of manufacturing the same, and recording apparatus using the unit