A combined lens design for an LED low-beam motorcycle headlight

Luo, Dan; Ge, Peng; Liu, D; Wang, H

doi:10.1177/1477153517697370

Cited by 5 publications

(9 citation statements)

References 12 publications

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“…Designing optical systems is still time-consuming because it is done "manually" by an optical designer performing iterative analytical and geometrical operations in order to meet the set of requirements [7][8][9][10][11]. Some simulation tools, of course, in addition to performing simulations of the "manually" obtained optical system also allow a designer to automate some of these timeconsuming design activities [12].…”

Section: Contemporary Design Methodsmentioning

confidence: 99%

“…The shape of such a distribution should be constantly controlled during the optical system design process. It is not enough to perform many time-consuming analytical and geometrical operations and, then, control the obtained distribution using computer simulations [7][8][9]. This leads to a danger of creating unacceptable designs and starting work from the beginning.…”

Section: Introductionmentioning

confidence: 99%

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Opto-Electronics Review

Kubiak

2020

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In the paper, an effective way to design asymmetrical optics for a uniform vertical surface illumination was presented. Assessment of the obtained distribution of luminance (illuminance) on the illuminated surface is done almost at the same time as designing the optical system elements. Advantage of the final application of the presented method in 3D will be independence from the implementation of time-consuming simulations in order to verify the already designed optics. Understanding the method and its application is simple and intuitive. Observing the luminance distribution, created on the illuminated surface almost at the same time as its design, allows to see the effect of adding the next elements of the optical system on this distribution.

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Section: Contemporary Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Opto-Electronics Review

Kubiak

2020

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“…Double freeform surface lens (DFSL) has many advantages over single freeform surface lens. For example, it can achieve an accurate distribution of light and suppress chromatic dispersion by its inner and outer freeform surfaces [15]. The deflection factor C (0 ≤ C ≤ 1), an important factor in DFSL, is used to represent the angular deflection ratio of two freeform surfaces.…”

Section: Optical System Of the Low Beam Modementioning

confidence: 99%

“…Then, by fixing the value of θ and changing the value of ϕ, the coordinates of the discrete points on both freeform surfaces can be acquired by iteration of the normal vector. Readers can find the detailed iteration process in [15]. After importing the data to modeling software, the upper half of the ADFSL can be obtained by lofting curve, as shown in Figure 6.…”

Section: Optical System Of the Low Beam Modementioning

confidence: 99%

“…In the past, our research group has proposed several optical systems for headlamps. For example, an optical system with a single freeform surface lens [13], a low chromatic dispersion headlamp system using a parabolic reflector and micro-lens array [14], a LED motorcycle headlight using a combined lens [15], etc. More separate design methods for low and high beams can be found in references [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Asymmetric Double Freeform Surface Lens for Integrated LED Automobile Headlamp

et al. 2021

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We propose a design method of asymmetric double freeform surface lens for an integrated LED automobile headlamp and develop an integrated LED automobile optical system. A single asymmetric double freeform surface lens is designed to redistribute rays emitting from the light source for realizing both low and high beams. Moreover, a freeform surface reflector is used to improve the energy efficiency of high beams. The prism placed in the optical path can suppress chromatic dispersion on the edge of the target plane. Simulation and experimental results show that the illumination values and color temperature of the key points can fully meet the requirements of United Nations Economic Commission for Europe vehicle regulations (ECE) R112, 48, and 128. The volume of the whole optical system comprised of freeform surface elements is smaller than that of the low beam system of a traditional headlamp, resulting in saved space, in which other electronic devices can be installed for the safety of the driver, which indicates that the proposed method is practical in the field of automobile lighting.

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Small-size LD-based automobile headlamp design with long illumination distance and wide illumination range

Wei,

Liu,

Xie

et al. 2023

Appl. Opt.

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Due to the large size of an automobile headlamp that has a laser as the light source, it is difficult to reflect the advantages of high laser brightness into the effect of automobile illumination, so it has not been promoted. We propose a laser headlamp system that integrates low-beam and high-beam structures with superior illumination effects (longer illumination distance and wider illumination range) by designing freeform optical components and optical structure. The small-volume headlamp can meet the requirements of the Economic Commission for Europe regulation (ECE) R112. The structure volume of the headlamp proposed in this study is only 100∗70∗70mm3, and the maximum luminance is 120 lx (simulation result) and 78.5 lx (test result). The view angle of the low beam is 13.6°, and the high beam is 15.6°, indicating that the solution is suitable for automotive illumination.

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A combined lens design for an LED low-beam motorcycle headlight

Cited by 5 publications

References 12 publications

Opto-Electronics Review

Opto-Electronics Review

Asymmetric Double Freeform Surface Lens for Integrated LED Automobile Headlamp

Small-size LD-based automobile headlamp design with long illumination distance and wide illumination range

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