New reversing freeform lens design method for LED uniform illumination with extended source and near field

2018 ◽  
Vol 410 ◽  
pp. 123-129 ◽  
Author(s):  
Zhili Zhao ◽  
Honghai Zhang ◽  
Huai Zheng ◽  
Sheng Liu
Keyword(s):  
Design Method ◽  
Near Field ◽  
Lens Design ◽  
Uniform Illumination ◽  
Extended Source ◽  
Freeform Lens

Freeform lens design for light-emitting diode uniform illumination by using a method of source–target luminous intensity mapping

2015 ◽  
Vol 54 (28) ◽  
pp. E146 ◽  
Author(s):  
Jin-Jia Chen ◽  
Ze-Yu Huang ◽  
Te-Shu Liu ◽  
Ming-Da Tsai ◽  
Kuang-Lung Huang
Keyword(s):  
Light Emitting Diode ◽  
Luminous Intensity ◽  
Lens Design ◽  
Uniform Illumination ◽  
Light Emitting ◽  
Intensity Mapping ◽  
Freeform Lens

Compact collimators designed with point approximation for light-emitting diodes

2016 ◽  
Vol 50 (2) ◽  
pp. 303-315
Author(s):  
T Luo ◽  
G Wang
Keyword(s):  
Design Method ◽  
Light Emitting Diode ◽  
Lens Design ◽  
Beam Angle ◽  
Optical Efficiency ◽  
Light Emitting ◽  
Chip Size ◽  
Practical Performance ◽  
Freeform Lens ◽  
Collimating Lens

We present a novel freeform lens design method for application to light-emitting diode collimating illumination. The lens is designed with a point-source assumption to form compact collimators. The method is derived from a basic geometric-optics analysis and the associated construction approach. By using this method, a compact collimating lenses with an aspect ratio = 0.181 is developed. With optimization of initial parameters, a highly collimating lens for a Cree XP-E LED (chip size: 1.2 mm × 1.2 mm) with an optical efficiency of 88.5% under a beam angle of ± 1.9° is constructed by simulation. To verify the practical performance of the lens, a prototype of the collimator lens is also made. This has light distribution compatible with the simulation results.

Optimized lens design for small angle uniform illumination from an extended source

2015 ◽  
Vol 48 (3) ◽  
pp. 376-383
Author(s):  
T Xue ◽  
CY Su ◽  
ZY Feng ◽  
CH Zhang ◽  
WJ Wang
Keyword(s):  
Small Angle ◽  
Lens Design ◽  
Uniform Illumination ◽  
Extended Source

Freeform lens design for complicated optical field tailoring

2021 ◽  
Author(s):  
ZeXin Feng ◽  
Dewen Cheng ◽  
Yongtian Wang
Keyword(s):  
Optical Field ◽  
Lens Design ◽  
Freeform Lens
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