Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system

Donglin Ma; Shaun Pacheco; Chengliang Wang; Rongguang Liang

doi:10.1117/1.OE.54.12.125102

Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system

Donglin Ma, Shaun Pacheco, Chengliang Wang, Rongguang Liang

Optical Sciences

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

9 Scopus citations

Abstract

The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double-pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.

Original language	English (US)
Article number	125102
Journal	Optical Engineering
Volume	54
Issue number	12
DOIs	https://doi.org/10.1117/1.OE.54.12.125102
State	Published - Dec 1 2015

Keywords

freeform optics
geometric optics
illumination design
light emitting diodes
nonimaging optics
nonspherical lens design

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Engineering

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10.1117/1.OE.54.12.125102

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title = "Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system",

abstract = "The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double-pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.",

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AU - Ma, Donglin

AU - Pacheco, Shaun

AU - Wang, Chengliang

AU - Liang, Rongguang

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N2 - The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double-pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.

AB - The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double-pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.

KW - freeform optics

KW - geometric optics

KW - illumination design

KW - light emitting diodes

KW - nonimaging optics

KW - nonspherical lens design

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Freeform optics construction with nonuniformly sampled grids in modified double-pole coordinate system

Abstract

Keywords

ASJC Scopus subject areas

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