Optical design of a Butterfly lens for a street light based on a double-cluster LED

Yi Chien Lo; Kuan Teng Huang; Xuan Hao Lee; Ching Cherng Sun

doi:10.1016/j.microrel.2011.04.007

Optical design of a Butterfly lens for a street light based on a double-cluster LED

Yi Chien Lo, Kuan Teng Huang, Xuan Hao Lee, Ching Cherng Sun

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We construct a precise optical model of the cluster LED and propose a design of a peanut form lens to achieve an optical utilization factor of 45% and uniformity of 1/2.7. Then we propose a new design of so-called Butterfly lens with unequal tilt design aimed to serve a double-cluster LED but with a tightened size. The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14 lx, which could meet almost all types requested by IESNA. The design of the Butterfly lens is proven workable for a double-cluster LED.

Original language	English
Pages (from-to)	889-893
Number of pages	5
Journal	Microelectronics Reliability
Volume	52
Issue number	5
DOIs	https://doi.org/10.1016/j.microrel.2011.04.007
State	Published - May 2012

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abstract = "We construct a precise optical model of the cluster LED and propose a design of a peanut form lens to achieve an optical utilization factor of 45% and uniformity of 1/2.7. Then we propose a new design of so-called Butterfly lens with unequal tilt design aimed to serve a double-cluster LED but with a tightened size. The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14 lx, which could meet almost all types requested by IESNA. The design of the Butterfly lens is proven workable for a double-cluster LED.",

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AU - Huang, Kuan Teng

AU - Lee, Xuan Hao

AU - Sun, Ching Cherng

PY - 2012/5

Y1 - 2012/5

N2 - We construct a precise optical model of the cluster LED and propose a design of a peanut form lens to achieve an optical utilization factor of 45% and uniformity of 1/2.7. Then we propose a new design of so-called Butterfly lens with unequal tilt design aimed to serve a double-cluster LED but with a tightened size. The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14 lx, which could meet almost all types requested by IESNA. The design of the Butterfly lens is proven workable for a double-cluster LED.

AB - We construct a precise optical model of the cluster LED and propose a design of a peanut form lens to achieve an optical utilization factor of 45% and uniformity of 1/2.7. Then we propose a new design of so-called Butterfly lens with unequal tilt design aimed to serve a double-cluster LED but with a tightened size. The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14 lx, which could meet almost all types requested by IESNA. The design of the Butterfly lens is proven workable for a double-cluster LED.

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JF - Microelectronics Reliability

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Optical design of a Butterfly lens for a street light based on a double-cluster LED

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