LIGHT-DIFFUSING LED LENS ADOPTING ASYMMETRIC FREE-FORM SURFACE EXPRESSION

WIPO Patent Application WO/2014/014249

A1

The present invention relates to a light-diffusing LED lens adopting asymmetric free-form surface expression, in which the light-diffusing LED lens adopting asymmetric free-form surface expression is provided to significantly improve the uniformity ratio of illumination of the target region by controlling the light from the LED serving as a light source. In particular, an LED street lamp for exclusive use on the highway can be provided which exhibits light control and illumination efficiency suitable for highway environment conditions such as the suburbs or downtown and characteristics of traffic lanes such as one-way, four-lane or two-lane highways, and thus a new market can be developed. Both the light incident surface and the light emitting surface of the lens of the present invention are formed into an aspherical surface, in which an asymmetrical free-form surface is optimally utilized to enable the free-form surface to be freely modified and changed by adjusting the coefficients of the aspherical surface or the like. The lens of the present invention enables a numerical design and a mathematical design by means of the free-form surface, and enables a fine control to be performed by numerical control to thus improve accuracy of light control.

JP2017016924	LED LAMP
JP6804693	Diffusing lens and light emitting device using this
WO/2013/036561	BROAD-AREA LIGHTING SYSTEMS

HYUN DONG HOON (KR)
NOH MYEUNG JAE (KR)

PCT/KR2013/006336

January 23, 2014

July 16, 2013

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HYUN DONG HOON (KR)
NOH MYEUNG JAE (KR)

F21V5/04

KR101109581B1	2012-01-31
US20120039077A1	2012-02-16
US20110235338A1	2011-09-29
JP2011044315A	2011-03-03

See also references of EP 2876362A4

PARK, JUN YEON (KR)
박준연 (KR)

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