Design of a double lens freeform miniaturized antenna

Hu, Lizhong; Chen, Xin; Jiang, Ping; Yang, Huajun; Qin, Yi; Zhou, Miaofang; Yang, Jing; He, Junyi; Deng, Jingxin

doi:10.1364/josab.492695

Cited by 3 publications

(1 citation statement)

References 30 publications

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“…In previous works [6], the authors propose a highpower collimation system consisting of LED arrays, freeform lens arrays, and confocal Fresnel lens arrays, which can increase the power and compress the optical structure for long-distance high-brightness LED illumination. In a previous work [7], the authors presented a design method for a two-lens freeform miniaturized antenna for collimation shaping and efficiency-enhancing transmission of elliptical beams from semiconductor lasers.…”

Section: Introductionmentioning

confidence: 99%

Optical design of low‐location illumination based on asymmetric double freeform surfaces

Chen,

Zhang,

Xie

et al. 2024

Luminescence

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The development of optical optics for low‐location road lighting is a challenging problem in providing high luminance and uniformity of illumination and meeting many other specific requirements. This study proposes an optical design method of low‐location illumination based on an asymmetric double freeform surface lens. The ray emitted from the light source is refracted and reflected through the different surface types to the corresponding area of the receiving surface. In the design example, the road has dual‐side mounted luminaires and a width of 6 m, and a height of 0.8 m. Simulation results indicate that, compared with conventional high‐pole streetlights, the luminance uniformity had increased from 0.60 to 0.66, the illuminance uniformity had improved from 0.75 to 0.86, and the glare had been reduced.

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Section: Introductionmentioning

confidence: 99%

Optical design of low‐location illumination based on asymmetric double freeform surfaces

Chen,

Zhang,

Xie

et al. 2024

Luminescence

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Design of a compact off-axis two-mirror freeform optical antenna for shaping and transmitting an elliptical beam emitted by laser diode

Chen,

Hu,

Liu

et al. 2023

Appl. Opt.

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Elliptical Gaussian beams generated by laser diodes (LDs) often exhibit asymmetrical divergence angle distribution, which limits their practical applications. In this study, we propose what we believe is a novel approach to shape and collimate the elliptical output beam from a LD. The design process involves the construction of two freeform reflective surfaces on a reference circle using a three-dimensional point-by-point iterative method, based on the law of conservation of energy, the vector reflection theory, and Fermat’s principle. The output beam’s maximum divergence angle is effectively compressed to 3.1579 mrad. The design is compact with a folded optical path and antenna size of 368.8cm3. This paper presents a comprehensive design and optimization process, along with an in-depth analysis of the system’s performance, thereby offering novel insights for emerging optical design practitioners.

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Utilizing Joukowsky transformation in the design of optical fiber for elliptical-to-circular mode conversion

Fu,

Jiang,

Qin

et al. 2024

J. Opt. Soc. Am. A

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This study addresses the challenge of enhancing coupling efficiency between optical fibers and elliptical Gaussian beams emitted by semiconductor lasers, particularly in fiber communication systems. We introduce a method for fiber design utilizing the Joukowsky transformation to facilitate efficient mode transformation from elliptical to circular, thereby augmenting the coupling efficiency with both single-mode and multimode fibers. Theoretical analysis and numerical simulations demonstrate that the fiber with a structurally transitional core maintains high-efficiency mode transformation across various lengths, and its structure has been optimized accordingly. Additionally, our investigation reveals the designed fiber’s ability to preserve polarization states, which could have significant implications in precision optical applications. The proposed design offers an approach to improving performance in optical communication systems, especially in wavelength-division multiplexing (WDM) transmission systems and fiber lasers.

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Design of a double lens freeform miniaturized antenna

Cited by 3 publications

References 30 publications

Optical design of low‐location illumination based on asymmetric double freeform surfaces

Optical design of low‐location illumination based on asymmetric double freeform surfaces

Design of a compact off-axis two-mirror freeform optical antenna for shaping and transmitting an elliptical beam emitted by laser diode

Utilizing Joukowsky transformation in the design of optical fiber for elliptical-to-circular mode conversion

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