7/29/2019 Street Light Design

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Street light design

There arent many stars beaming down at you at night in metro areas because oflight pollution - the namefor misdirected artificial light. A team of scientists has outlined a new LED street lamp design that could help

reclaim the luminosity of the heavens.

A pollution solution devised by a team of Japanese and Mexican researchers was published yesterday in the

journalOptics Express. The design is multi-fold. It outfits street lamps with a cluster of LEDs and specialized

lenses that are mounted inside of a reflective box covered with amicrolenssheet that resembles the shape of

insects eyes, according to information found in the studys abstract.

The effect is a uniform distribution of light on the street below, which was verified by multiple computer

simulations that experimented with street light placements. However, a working prototype has yet to be built.

The study notes that more directed light would use between 10-50 percent less energy.

Drivers and nearby residents also realize benefits. The light is efficiently and homogeneously distributed;

which is a requirement for reducing glare, and improving both the eye comfort and the visual discrimination

ability of car drivers, the study says. The researchers concluded, we believe this design is the best ever

reported - published in what may be the least modest study in the journal.

http://en.wikipedia.org/wiki/Light_pollutionhttp://en.wikipedia.org/wiki/Light_pollutionhttp://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-9-10612http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-9-10612http://en.wikipedia.org/wiki/Microlenshttp://en.wikipedia.org/wiki/Microlenshttp://en.wikipedia.org/wiki/Microlenshttp://i.bnet.com/blogs/screen-shot-2013-04-25-at-93520-pm.pnghttp://en.wikipedia.org/wiki/Microlenshttp://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-9-10612http://en.wikipedia.org/wiki/Light_pollution