Design of illumination optics with extended sources based on wavefront tailoring

Sorgato, Simone; Chaves, Julio; Thienpont, Hugo; Duerr, Fabian

doi:10.1364/optica.6.000966

Cited by 38 publications

(13 citation statements)

References 15 publications

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“…По мнению авторов настоящей работы, наиболее значимым методом в категории методов «краевого луча» является метод «подстроенных» волновых фронтов (ПВФ, англ. wavefront tailoring method), опубликованный в высокорейтинговом журнале Optica в 2019 году [24]. Данный метод основан на преобразовании «входящих» волновых фронтов, испускаемых из краевых точек источника излучения, в «исходящие» волновые фронты, обеспечивающие формирование заданного светового распределения.…”

Section: Introductionunclassified

Design of optical elements for an extended light source

Byzov¹,

Doskolovich²,

Kravchenko³

et al. 2023

Computer Optics

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Using the previously developed optimization method for an extended light source [Byzov EV, Kravchenko SV, Moiseev MA, Bezus EA, Doskolovich LL. Optimization method for designing double-surface refractive optical elements for an extended light source. Opt Express 2020; 28(17): 24431-24443. DOI: 10.1364/OE.400609], we designed a compact refractive optical element (the ratio of the element height to the light source size being 1.55) providing a uniform illuminance distribution in a shifted rectangular region. An application of the optimization method for calculating the so-called TIR-elements, exploiting the phenomenon of the total internal reflection of rays, is considered. For an extended light source, compact TIR-elements with freeform exit surfaces that generate uniform illuminance distributions in a rectangular region are designed. The results of the work show promise for a wide class of problems of designing compact optical elements for light-emitting diodes.

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Section: Introductionunclassified

Design of optical elements for an extended light source

Byzov¹,

Doskolovich²,

Kravchenko³

et al. 2023

Computer Optics

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“…[10][11][12] The simultaneous multiple-surfaces (SMS) method can achieve rectangular uniform illumination by simultaneously controlling the incident wavefronts from three different directions of the extended light source. 13,14 A very simple and versatile approach to solving the irradiance tailoring problem with an extended light source is to parametrize the freeform surfaces and optimize the parameters to minimize the deviation between the simulated irradiance distribution and the desired one. [15][16][17][18] However, the parameter optimization for the irradiance tailoring problem is very time-consuming because they may need thousands of irradiance evaluations based on Monte Carlo ray tracing.…”

Section: Introductionmentioning

confidence: 99%

Fast irradiance evaluation of freeform illumination lenses based on deep learning

Tang

Feng

Cheng

et al. 2023

AOPC 2022: Novel Optical Design; And Optics Ultra Precision Manufacturing and Testing

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Compared with traditional optical surfaces, freeform surfaces provide much more degrees of freedom to tailor the irradiance distributions of light sources, forming previously unimaginable illumination optical systems. However, the complexity of freeform surfaces presents a huge challenge to the design process, especially when the light source size is assignable. We achieved fast irradiance evaluation of freeform illumination lens based on deep learning methods, preparing for a rapid optimization for the lens design. These learned simulation results are similar to those of LightTools, while the computation time is greatly reduced. The representation of freeform surfaces, the generation of datasets, and the selection of neural network structures are introduced in this paper. In the future, we will further improve the neural network performance and use the back-propagation of the neural network to realize a rapid optimization of the freeform lens.

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“…With the fast development of aberration theory [4,5] and optical manufacturing technologies [6,7], freeform surfaces have been applied in many different areas, such as LED illumination [8,9], head-mounted displays [10,11], hyperspectral systems [12], remote sensing systems [13], and so on. Many scholars have explored various automated design methods for freeform surfaces, such as the Simultaneous Multiple Surface (SMS) method [14,15] and partial differential equations (PDEs) method [16,17].…”

Section: Introductionmentioning

confidence: 99%

Automated design of freeform imaging systems for automotive head-up display applications

Ma¹,

Fan²,

Wei³

et al. 2023

Preprint

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Freeform imaging system is playing a significant role in developing an optical system for the automotive head-up display (HUD), which is a typical application of augmented reality (AR) technology. There exists a strong necessity to develop automated design algorithms for automotive HUDs due to its high complexity of multi-configuration caused by movable eyeballs as well as various drivers’ heights, correcting additional aberrations introduced by the windshield, variable structure constraints originated from automobile types, which, however, is lacking in current research community. In this paper, we propose an automated design method for the automotive AR-HUD optical systems with two freeform surfaces as well as an arbitrary type of windshield. With optical specifications of sagittal and tangential focal lengths, and required structure constraints, our given design method can generate an initial structure with high image quality automatically, and then the final system is realized by our proposed iterative optimization algorithms with superior performances due to the extraordinary starting point. Two examples of AR-HUD systems at different structures are realized automatically by our presented automated design algorithms. Both AR-HUD designs can have superior optical performance for an eye-box of 130mm×50mm and a field of view of 13°×5°, which demonstrates the feasibility and superiority of our proposed design framework.

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Design of illumination optics with extended sources based on wavefront tailoring

Cited by 38 publications

References 15 publications

Design of optical elements for an extended light source

Design of optical elements for an extended light source

Fast irradiance evaluation of freeform illumination lenses based on deep learning

Automated design of freeform imaging systems for automotive head-up display applications

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