Results 11 to 20 of about 25,797 (249)
Volume Holographic Optical Elements as Solar Concentrators: An Overview
Applied Sciences, 2019 Generally, to reduce the area of a photovoltaic cell, which is typically very expensive, solar concentrators based on a set of mirrors or mechanical structures are used.
Maria Antonietta Ferrara +2 more
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Wavefront-aberration-tolerant diffractive deep neural networks using volume holographic optical elements [PDF]
Scientific ReportsAs the demand for computational performance in artificial intelligence (AI) continues to increase, diffractive deep neural networks (D2NNs), which can perform AI computing at the speed of light by repeated optical modulation with diffractive optical ...
Ikuo Hoshi +3 more
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Compact design for optical-see-through holographic displays employing holographic optical elements
Optics Express, 2018 Holographic AR display is a promising technology for head-mounted display devices. However, it usually has a complicated optical system and a large form factor, preventing it from widespread applications. In this work, we propose a flat-panel design to produce a compact holographic AR display, where traditional optical elements are replaced by two ...
Pengcheng Zhou +3 more
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Photonics, 2021 An optical see-through two-dimensional (2D)/three-dimensional (3D) compatible display using variable-focus lens and multiplexed holographic optical elements (MHOE) is presented. It mainly consists of a MHOE, a variable-focus lens and a projection display
Qinglin Ji +5 more
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Advanced Photonics Research, 2021 Holographic optical elements (HOEs) exhibit several unique properties in arbitrary wavefront recording and extraction. Versatile recording mechanisms and material availabilities further expand their design flexibilities.
Jianghao Xiong +3 more
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An efficient and wide angle coupling of light to a thin film holographic optical element [PDF]
Scientific ReportsIn this paper, a new method is proposed to achieve wide-angle and efficient coupling of light into a thin film, holographic optical element (HOE). The coupling is based on diffraction of light (the probe beam) by a holographic element.
Mei-Li Hsieh +3 more
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Holographic Optical Lenses Recorded on a Glassy Matrix-Based Photopolymer for Solar Concentrators
Photonics, 2021 Global warming is a very topical issue, therefore the search for new renewable energy sources is considered of fundamental importance. Among these, solar energy offers great possibilities considering that the amount of sunlight hitting the Earth ‘s ...
Maria Antonietta Ferrara +2 more
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Light: Advanced Manufacturing, 2022 This paper presents the results of 15 years of studies in the field of terahertz holography at the Novosibirsk free electron laser. They cover two areas: research on obtaining holographic images in the terahertz range and the use of diffractive optical ...
Yulia Choporova +2 more
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Journal of Information Display, 2022 We present a novel design of the lightguide type optical see-through Maxwellian near-eye display. The proposed display reconfigures vertically long input images to horizontally long output images for wide horizontal viewing-angle.
Woongseob Han +3 more
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Image Quality for Near-Eye Display Based on Holographic Waveguides
Applied Sciences, 2022 The paper analyzes the image quality in augmented reality display based on holographic waveguides. Brightness, brightness non-uniformity, image noise, etc., depend on the parameters of the waveguide substrate, the configuration, and the relief shape of ...
Artem Solomashenko +4 more
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