Optical design of reflecting omnidirectional zoom optical system with peripheral half-field of view from 110° to 72° for day and night surveillance

Ju, Yun Jae; Jo, Jae Heung; Ryu, Jae Myung

doi:10.1016/j.ijleo.2020.164690

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Further, in [113], [114], the researchers designed a mirror panoramic system composed of four mirrors. It is composed of pseudo-Cassegrain collecting mirror and a reverse pseudo-Cassegrain imaging mirror, which can image visible light and long-wave infrared light simultaneously.…”

Section: Catadioptric Panoramic Systemmentioning

confidence: 99%

Review on Panoramic Imaging and Its Applications in Scene Understanding

Gao¹,

Yang²,

Sheng³

et al. 2022

Preprint

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With the rapid development of high-speed communication and artificial intelligence technologies, human perception of real-world scenes is no longer limited to the use of small Field of View (FoV) and low-dimensional scene detection devices. Panoramic imaging emerges as the next generation of innovative intelligent instruments for environmental perception and measurement. However, while satisfying the need for large-FoV photographic imaging, panoramic imaging instruments are expected to have high resolution, no blind area, miniaturization, and multi-dimensional intelligent perception, and can be combined with artificial intelligence methods towards the next generation of intelligent instruments, enabling deeper understanding and more holistic perception of 360 • real-world surrounding environments. Fortunately, recent advances in freeform surfaces, thinplate optics, and metasurfaces provide innovative approaches to address human perception of the environment, offering promising ideas beyond conventional optical imaging. In this review, we begin with introducing the basic principles of panoramic imaging systems, and then describe the architectures, features, and functions of various panoramic imaging systems. Afterwards, we discuss in detail the broad application prospects and great design potential of freeform surfaces, thin-plate optics, and metasurfaces in panoramic imaging. We then provide a detailed analysis on how these techniques can help enhance the performance of panoramic imaging systems. We further offer a detailed analysis of applications of panoramic imaging in scene understanding for autonomous driving and robotics, spanning panoramic semantic image segmentation, panoramic depth estimation, panoramic visual localization, and so on. Finally, we cast a perspective on future potential and research directions for panoramic imaging instruments.

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Section: Catadioptric Panoramic Systemmentioning

confidence: 99%

Review on Panoramic Imaging and Its Applications in Scene Understanding

Gao¹,

Yang²,

Sheng³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Taking the famous Large Synoptic Survey Telescope (LSST) as an example, this coaxial TMA telescope with a FOV of 3.5 °is composed of an 8.4 m primary mirror, a 3.4 m second mirror, and a 5.0 m tertiary mirror [8]. Ofaxis TMA systems have great potential to provide good optical solutions to meet the requirement of high resolution while maintaining a large FOV [9][10][11][12]. Of-axis confgurations usually make the aperture stop ofset or the FOV biased to avoid obscuration and achieve a large FOV [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Target Simulator Using All Spherical System with High Matching Rate

Li,

Zhang,

Zhao

et al. 2023

International Journal of Optics

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To achieve low wavefront error and high throughput with vignetting-free target simulators, a concave-convex-concaveoff-axis spherical system is designed in this paper, which effectively eliminates astigmatism and coma of the system by fields of view (FOVs) and aperture offset and provides theoretical basis for the realization of 100% matching between the exit pupil of the field lens and entrance pupil of the three-mirror anastigmat (TMA) system. Only spherical mirror element is used in this target simulator, which not only reduces the difficulty of manufacturing and cost but also greatly reduces the difficulty of assembling and adjusting. It provides an effective scheme for the design of target simulator and has strong engineering application value.

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“…[ 1 ] Especially, the infrared transmissive lenses play a significant role in various fields of infrared imaging systems, [ 2 ] remote sensors, [ 3 ] medical imaging modalities [ 4 ] as well as night surveillance. [ 5 ] Generally, inorganic materials with HRI exceeding 2.0, excellent optical transparency, and high dimensional stability are used as optical materials. [ 6 ] However, several critical issues including high cost, brittleness, and complex fabrication process are inevitably considered when these inorganic materials are used in fabrication of optical lenses.…”

Section: Introductionmentioning

confidence: 99%

Photo‐Curing Vis‐IR Hybrid Fresnel Lenses with High Refractive Index

Qiu

Jin

et al. 2021

Macro Chemistry & Physics

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Conventional IR lenses, typically refractive lenses, composed of inorganic semiconductors or chalcogenide glasses, are usually bulky, heavy, and difficult processable. Here, a one‐step photo‐curing imprinting strategy is presented to fabricate lightweight, compact, and high refractive index (HRI) hybrid Fresnel lenses for optical devices based on thiol‐ene/‐yne reactions. The hybrid Fresnel lenses consist of two layers: the silicon/quartz as the support substrate and HRI polymer films as functional layer which are synthesized by thiol‐ene/‐yne reactions with high sulfur‐content comonomers 2,3‐bis((2‐mercaptoethyl)thio)‐1‐propanethiol (BMETP) and its derivatives. The as‐prepared photopolymer films exhibit excellent transparency properties and HRI above 1.62 both in the visible and infrared regions, resulting from the large ratio of sulfur element with high molar refraction. A series of images captured by vis‐IR hybrid Fresnel lenses are demonstrated to confirm the applicability in the area of the optical imaging technique. This strategy, based on the one‐step photo‐curing imprinting, integrating the advantages of the easy processability of organic polymers and high dimensional stability of the inorganic substrate materials, provides a facile, processable, and highly efficient process for fabricating lightweight optical lenses.

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Optical design of reflecting omnidirectional zoom optical system with peripheral half-field of view from 110° to 72° for day and night surveillance

Cited by 6 publications

References 7 publications

Review on Panoramic Imaging and Its Applications in Scene Understanding

Review on Panoramic Imaging and Its Applications in Scene Understanding

Design and Analysis of Target Simulator Using All Spherical System with High Matching Rate

Photo‐Curing Vis‐IR Hybrid Fresnel Lenses with High Refractive Index

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