Prof. Yongtian Wang Profile

Prof. Yongtian Wang

Professor of Optics and Applied Computer Science at Beijing Institute of Technology

SPIE Involvement:

Conference Chair | Author | Editor

Area of Expertise:

Optical design and CAD , Virtual reality and augmented reality , Display technology , Human-computer interaction

Websites:

Company Website

Publications (152)

Proceedings Article | 13 December 2024 Paper

Automated imaging performance balance of complicated imaging optical systems based on out-loop and performance change ratio

Shenyu Zhao, Tong Yang, Yinuo Cheng, Dewen Cheng, Yongtian Wang

Proceedings Volume 13497, 134970B (2024) https://doi.org/10.1117/12.3047534

KEYWORDS: Modulation transfer functions, Imaging systems, Zoom lenses, Optical imaging, Cameras, Optical design, Aspheric lenses

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Proceedings Article | 4 December 2024 Paper

Single-celled metasurface full-color holography by independent phase control at RGB wavelengths

Xiaotong Zhang, Xin Li, Lingling Huang, Yongtian Wang

Proceedings Volume 13283, 132830F (2024) https://doi.org/10.1117/12.3033339

KEYWORDS: Color, Holography, Phase modulation, Holograms

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Proceedings Article | 27 November 2024 Poster + Paper

Dual-object-distance imager design enabled by polarization-sensitive flat phase elements

Lina Gao, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 13237, 1323713 (2024) https://doi.org/10.1117/12.3035214

KEYWORDS: Imaging systems, Zoom lenses, Optical components

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Proceedings Article | 13 March 2024 Poster + Paper

Design and application of diffractive optical element: a review

Yuan Xu, Changyu Wang, Yongtian Wang, Juan Liu

Proceedings Volume 12910, 129100O (2024) https://doi.org/10.1117/12.3000168

KEYWORDS: Diffractive optical elements, Design and modelling, Biomedical applications, Polarization imaging, Mathematical optimization, Holographic displays, Diffraction, Wavefronts, Thermal modeling, Optical components

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Proceedings Article | 28 November 2023 Poster + Paper

Optical-digital joint optimization enables advanced specifications freeform imaging system design

Huiming Xu, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 12765, 127651Z (2023) https://doi.org/10.1117/12.2688784

KEYWORDS: Image restoration, Imaging systems, Point spread functions, Image processing, Ray tracing, Optical surfaces, Image quality

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Proceedings Article | 28 November 2023 Paper

Spherical-freeform lens design for uniform illumination based on differentiable ray tracing with uv polynomials

Haoran Li, Haisong Tang, Zexin Feng, Yi Luo, Yongtian Wang

Proceedings Volume 12765, 127650H (2023) https://doi.org/10.1117/12.2687294

KEYWORDS: Optical surfaces, Ray tracing, Light sources and illumination, Lens design, Light sources, 3D projection, Spherical lenses, Partial differential equations, Numerical analysis, Design and modelling

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Proceedings Article | 28 November 2023 Poster + Paper

Generating off-axis reflective imaging systems consisting of flat phase elements based on deep learning

Boyu Mao, Tong Yang, Huiming Xu, Dewen Cheng, Yongtian Wang

Proceedings Volume 12765, 127651E (2023) https://doi.org/10.1117/12.2686762

KEYWORDS: Imaging systems, Education and training, Design and modelling, Machine learning, Ray tracing, Chemical elements, Optical components, Systems modeling, Holographic optical elements, Distortion

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Proceedings Article | 23 January 2023 Paper

Design of retinal projection near-eye display with extended eyebox based on freeform holographic elements

Yongdong Wang, Tong Yang, Dongwei Ni, Dewen Cheng, Yongtian Wang

Proceedings Volume 12557, 125572U (2023) https://doi.org/10.1117/12.2651772

KEYWORDS: Imaging systems, Zoom lenses, Eye, Holographic optical elements, Holography, Chemical elements, Mirrors, Collimation, Retina, Optical design

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Proceedings Article | 20 January 2023 Paper

Fast irradiance evaluation of freeform illumination lenses based on deep learning

Haisong Tang, Zexin Feng, Dewen Cheng, Yongtian Wang

Proceedings Volume 12559, 125590F (2023) https://doi.org/10.1117/12.2652055

KEYWORDS: Freeform optics, Neural networks, Lens design, Computer simulations

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Proceedings Article | 20 January 2023 Paper

Design and exploration of freeform three-mirror imaging systems with integrated primary and tertiary mirrors using same expression

Lijun Zhou, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 12559, 125590B (2023) https://doi.org/10.1117/12.2651242

KEYWORDS: Design and modelling, Imaging systems, Mirrors, Tolerancing, Off axis mirrors, Image quality, Zernike polynomials

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Proceedings Article | 21 December 2022 Poster + Presentation + Paper

Optical design of a wide linear field-of-view, high resolution, and compact f-theta laser scanning system

Tian Zhang, Hailong Chen, Wenfang Luo, Hongye Du, Dewen Cheng, Yongtian Wang

Proceedings Volume 12315, 123151J (2022) https://doi.org/10.1117/12.2643829

KEYWORDS: Laser scanners, Imaging systems, Optical design, Optical scanning systems, Freeform optics

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Proceedings Article | 21 December 2022 Poster + Presentation + Paper

Optical design of a wide-angle pinhole lens for VR and AR inspection

Yang Li, Dewen Cheng, Xueliang Shi, Yongtian Wang

Proceedings Volume 12315, 1231513 (2022) https://doi.org/10.1117/12.2641854

KEYWORDS: Virtual reality, Modulation transfer functions, Tolerancing, Augmented reality, Head-mounted displays, Inspection, Optical design, Optical inspection

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Proceedings Article | 21 December 2022 Presentation + Paper

Design of a wide field-of-view, compact head-mounted display based on free-form prisms tiling

Danyang Li, Dewen Cheng, Xueyan Jiang, Hailong Chen, Cheng Yao, Qiwei Wang, Yongtian Wang

Proceedings Volume 12315, 1231502 (2022) https://doi.org/10.1117/12.2643889

KEYWORDS: Prisms, Distortion, Head-mounted displays, Augmented reality, Optical resolution, Imaging systems, Freeform optics

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Proceedings Article | 19 December 2022 Presentation + Paper

Holographic-assisted multiplexing optical metasurfaces

Xin Li, Lingling Huang, Yongtian Wang

Proceedings Volume 12318, 1231803 (2022) https://doi.org/10.1117/12.2651413

KEYWORDS: Holography, Multiplexing, Code division multiplexing, Computer generated holography, Diffraction, Optical components, Holograms, Polarization, Modulation, Computer programming

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Proceedings Article | 8 July 2022 Paper

Complex amplitude modulation in visible by ultra-thin dielectric metasurface

Jianghong Liu, Qiang Jiang, Lingling Huang, Yongtian Wang

Proceedings Volume 12283, 1228303 (2022) https://doi.org/10.1117/12.2620164

KEYWORDS: Holograms, Modulation, Metamaterials

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Proceedings Article | 21 December 2021 Paper

Visual comfort evaluation of table-HUD

Feiyan Zhou, Dewen Cheng, Wenrui Shen, Yongtian Wang

Proceedings Volume 12063, 120630P (2021) https://doi.org/10.1117/12.2607137

KEYWORDS: Visualization, Heads up displays, Video, Visual analytics, Computing systems, Statistical analysis, Reliability, Tablets, Eye, LCDs

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Proceedings Article | 24 November 2021 Paper

Design of ultra-short throw ratio lens using annularly stitched aspheric surface

Hailong Chen, Dewen Cheng, Yongtian Wang

Proceedings Volume 12063, 1206308 (2021) https://doi.org/10.1117/12.2606174

KEYWORDS: Distortion, Objectives, Modulation transfer functions, Aspheric lenses, Mirrors, Projection systems, Lens design, Imaging systems, Spherical lenses, Spatial frequencies

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Proceedings Article | 24 November 2021 Paper

Design of diffractive waveguide near eye display system with exit pupil expansion

Dongwei Ni, Dewen Cheng, Yongtian Wang

Proceedings Volume 12063, 120630A (2021) https://doi.org/10.1117/12.2606228

KEYWORDS: Waveguides, Optical design, Imaging systems, Displays, Eye

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Proceedings Article | 24 November 2021 Paper

Stray light analysis of geometric waveguide

Ximeng Wang, Deweng Cheng, Qiwei Wang, Yongtian Wang

Proceedings Volume 12063, 120630F (2021) https://doi.org/10.1117/12.2606781

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Proceedings Article | 24 November 2021 Paper

Design of a virtual image distance measurement system for augmented reality/virtual reality display

Qi Zuo, Dewen Cheng, Cheng Yao, Haoran Li, Hailong Chen, Yue Liu, Yongtian Wang

Proceedings Volume 12063, 120630M (2021) https://doi.org/10.1117/12.2607093

KEYWORDS: Virtual reality, Imaging systems, Lens design, Augmented reality, Distance measurement

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Proceedings Article | 24 November 2021 Paper

The luminance and chromaticity measurement of head-mounted displays

Wenjie Zha, Qiwei Wang, Dewen Cheng, Yongtian Wang

Proceedings Volume 12063, 120630E (2021) https://doi.org/10.1117/12.2606683

KEYWORDS: Head-mounted displays, Spectroscopy, Augmented reality, Virtual reality, Optical fibers, Displays, Optical testing

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Proceedings Article | 19 November 2021 Paper

Design of a freeform refractive surface with reflection loss for illumination

Weitao Song, Chen Xu, Yue Liu, Yongtian Wang

Proceedings Volume 12078, 120781T (2021) https://doi.org/10.1117/12.2603680

KEYWORDS: Reflection, Wavefronts, Lens design, Monte Carlo methods, Optical design, Freeform optics, Imaging systems, Illumination engineering, Geometrical optics, Spherical lenses

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Proceedings Article | 19 November 2021 Paper

Automatic obscuration elimination for off-axis mirror systems without plane of symmetry

Chen Xu, Weitao Song, Yongtian Wang

Proceedings Volume 12078, 120780H (2021) https://doi.org/10.1117/12.2603626

KEYWORDS: Mirrors, Off axis mirrors, Systems modeling, Optimization (mathematics), Code v, Lens design

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Proceedings Article | 14 November 2021 Presentation + Paper

Optical distortion correction for an ultra-short throw with a wrinkled-surface target

Yue Liu, Dewen Cheng, Yongtian Wang

Proceedings Volume 11914, 119140Z (2021) https://doi.org/10.1117/12.2603763

KEYWORDS: Distortion, Projection systems, Ray tracing, Optical calibration, Imaging systems, Error analysis, Modulation transfer functions, Image processing, Diffraction, Reflectors

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Proceedings Article | 9 October 2021 Paper

Iterative freeform lens design for extended light source

Zexin Feng, Dewen Cheng, Yongtian Wang

Proceedings Volume 11895, 1189506 (2021) https://doi.org/10.1117/12.2601317

KEYWORDS: Freeform optics, Lens design, Ray tracing, Light emitting diodes, Computer simulations, Monte Carlo methods, Light sources, Wavefronts, Light sources and illumination

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Proceedings Article | 12 September 2021 Presentation + Paper

Optimizing freeform lenses for non-rectangular irradiance tailoring of extended LED sources

Zexin Feng, Yuyin Li, Dewen Cheng, Yongtian Wang

Proceedings Volume 11874, 118740O (2021) https://doi.org/10.1117/12.2597092

KEYWORDS: Ray tracing, Freeform optics, Light emitting diodes, Lens design, Computer simulations, 3D modeling, Optimization (mathematics), MATLAB, Monte Carlo methods, Data modeling

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SPIE Journal Paper | 17 June 2021 Open Access

Design of a miniature anamorphic lens with a freeform front group and an aspheric rear group

Chen Xu, Weitao Song, Yongtian Wang

OE, Vol. 60, Issue 06, 065104, (June 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.6.065104

KEYWORDS: Distortion, Aspheric lenses, Modulation transfer functions, Chemical elements, Optical engineering, Lens design, Sensors, Image sensors, Freeform optics, Image restoration

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Proceedings Article | 5 November 2020 Paper

Retinal projection display system based on MEMS scanning projector and conicoid curved semi-reflective mirror

Chenchen Zhang, Dewen Cheng, Junguo Lin, Yongtian Wang

Proceedings Volume 11565, 1156506 (2020) https://doi.org/10.1117/12.2579824

KEYWORDS: Microelectromechanical systems, Eye, Projection systems, Reflectivity, Field emission displays, Digital imaging, Retina, Augmented reality, Retinal scanning

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Proceedings Article | 5 November 2020 Paper

Design of an off-axis four-mirror system for automotive head-up display

Mao Zhou, Dewen Cheng, Qiwei Wang, Hailong Chen, Yongtian Wang

Proceedings Volume 11565, 1156507 (2020) https://doi.org/10.1117/12.2579841

KEYWORDS: Heads up displays, Stray light, Eye, Mirrors, Imaging systems, Distortion, Reflection, Modulation transfer functions, LCDs

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Proceedings Article | 10 October 2020 Poster + Presentation + Paper

Design of a compact and high-resolution image scanner with large depth-of-field based on compound eye system

Weixing Lei, Dewen Cheng, Tong Yang, Yue Liu, Hailong Chen, Yongtian Wang

Proceedings Volume 11548, 115481V (2020) https://doi.org/10.1117/12.2574980

KEYWORDS: Eye, Scanners, Image resolution, Modulation transfer functions, Imaging systems, Distortion

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Proceedings Article | 10 October 2020 Presentation + Paper

Network training parameters exploration for generating starting points of freeform reflective imaging system design based on machine learning

Wenchen Chen, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 11548, 115480P (2020) https://doi.org/10.1117/12.2573313

KEYWORDS: Imaging systems, Reflectivity, Optical design, Optical imaging, Machine learning, Neural networks, Freeform optics, Optimization (mathematics), Network security, Distortion

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Proceedings Article | 7 October 2020 Paper

Design of wide field of view pinhole lens for VR/AR image quality test

Ying Yuan, Dewen Cheng, Qiwei Wang, Hailong Chen, Yongtian Wang

Proceedings Volume 11571, 115710F (2020) https://doi.org/10.1117/12.2579784

KEYWORDS: Distortion, Imaging systems, Tolerancing, Lens design, Coded apertures, Virtual reality, Augmented reality, Sensors, Monochromatic aberrations

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Proceedings Article | 12 March 2020 Paper

Point-by-point design and evaluation of different system configurations consisting of freeform surfaces and/or flat phase elements

Yingzhe Duan, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 11434, 1143407 (2020) https://doi.org/10.1117/12.2540783

KEYWORDS: Imaging systems, Optical design, Optical components, Freeform optics

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Proceedings Article | 12 March 2020 Paper

Design of freeform nonsymmetric three-mirror systems using Gaussian radial basis functions freeform surfaces

Junhao Ni, Tong Yang, Dewen Cheng, Yongtian Wang

Proceedings Volume 11434, 1143408 (2020) https://doi.org/10.1117/12.2540906

KEYWORDS: Mirrors, Optical spheres, Control systems, Freeform optics, Optical design, Distortion, Modulation transfer functions, Long wavelength infrared, Wavefronts, Infrared radiation

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Proceedings Article | 10 March 2020 Presentation

Bilayered plasmonic metasurface for non-reciprocal holographic image encryption (Conference Presentation)

Daniel Frese, Qunshuo Wei, Yongtian Wang, Lingling Huang, Thomas Zentgraf

Proceedings Volume 11289, 112890E (2020) https://doi.org/10.1117/12.2545612

KEYWORDS: Plasmonics, Holograms, Holography, Image encryption, Polarization, Phase shift keying, Information security, Wavefronts, Wave propagation, Computer programming

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SPIE Journal Paper | 2 January 2020

Design of a 360-deg panoramic capture system based on a smart phone

Weitao Song, Xumin Liu, Qijia Cheng, Yetao Huang, Yuanjin Zheng, Yue Liu, Yongtian Wang

OE, Vol. 59, Issue 01, 015101, (January 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.1.015101

KEYWORDS: Panoramic photography, Cameras, Imaging systems, Lens design, Spherical lenses, Tolerancing, Lenses, Prototyping, Image processing, Distortion

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Proceedings Article | 14 August 2019 Paper

Vertebrae segmentation via stacked sparse autoencoder from computed tomography images

Syed Furqan Qadri, Zhiqi Zhao, Danni Ai, Mubashir Ahmad, Yongtian Wang

Proceedings Volume 11179, 111794K (2019) https://doi.org/10.1117/12.2540176

KEYWORDS: Image segmentation, Computed tomography, Spine, Medical imaging, Gaussian filters

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Proceedings Article | 19 July 2019 Paper

Miniature handheld multi-view optical coherence tomography probe for intraoperative vascular imaging

Yong Huang, Yingxiong Xie, Xiaochen Li, Jian Yang, Yongtian Wang, Dedi Tong, Shanlin Chen, Jin Kang

Proceedings Volume 11078, 110780H (2019) https://doi.org/10.1117/12.2526686

KEYWORDS: Optical coherence tomography, Vascular imaging, Surgery, Imaging systems, Coherence imaging, Microelectromechanical systems, Infrared detection, Blood vessels

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SPIE Journal Paper | 25 April 2019

Design of an achromatic projection system on a curved surface for enlarging view using polarization control metasurface

Weiting Peng, Juan Liu, Yongtian Wang

OE, Vol. 58, Issue 04, 045103, (April 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.4.045103

KEYWORDS: Refraction, Projection systems, Polarization, Modulation, Nanorods, Antennas, Polarization control, Diffraction, Finite-difference time-domain method, Optical design

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Proceedings Article | 8 March 2019 Presentation

Metasurface based multichannel vectorial holograms (Conference Presentation)

Thomas Zentgraf, Ruizhe Zhao, Basudeb Sain, Qunshuo Wei, Chengchun Tang, Xiaowei Li, Lingling Huang, Yongtian Wang

Proceedings Volume 10926, 109261P (2019) https://doi.org/10.1117/12.2507761

KEYWORDS: Polarization, Holograms, Holography, Multiplexing, Wavefronts, Data storage, Computer security, Optical design, Polarization control, Phase shifts

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Proceedings Article | 12 December 2018 Paper

Retinal scanning display with microlens-array-based exit pupil expanders

Jian Han, Dewen Cheng, Yongtian Wang

Proceedings Volume 10846, 108462W (2018) https://doi.org/10.1117/12.2505601

KEYWORDS: Microlens, Diffusers, Retinal scanning, Gaussian beams, Speckle pattern, Diffraction

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Proceedings Article | 12 December 2018 Paper

Pulsed laser annealing for metallic nanorods embedded in alumina

Yuyi Feng, Tobias Kemmer, Philipp Graus, Clayton Nemitz, Johannes Boneberg, Lingling Huang, Juan Liu, Yongtian Wang, Lukas Schmidt-Mende, Paul Leiderer

Proceedings Volume 10844, 108440O (2018) https://doi.org/10.1117/12.2505211

KEYWORDS: Nanorods, Annealing, Silver, Pulsed laser operation, Crystals, Scanning electron microscopy, Laser crystals, Metamaterials, Beam splitters, Nanostructures

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Proceedings Article | 8 November 2018 Paper

Depth-aware interactive display method for vision-tangible mixed reality

Zhenliang Zhang, Yue Li, Jie Guo, Dongdong Weng, Yue Liu, Yongtian Wang

Proceedings Volume 10817, 1081705 (2018) https://doi.org/10.1117/12.2500432

KEYWORDS: Mixed reality, Calibration, Head-mounted displays, Visualization

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Proceedings Article | 5 November 2018 Paper

Freeform lens design for laser diode beam shaping

Zexin Feng, Dewen Cheng, Yongtian Wang

Proceedings Volume 10815, 108150K (2018) https://doi.org/10.1117/12.2500048

KEYWORDS: Freeform optics, Ray tracing, Lens design, Beam shaping, Wavefronts, Semiconductor lasers, Monochromatic aberrations, Collimation, Laser development

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Proceedings Article | 5 November 2018 Paper

Optimizing double freeform surfaces for reducing deviations in ray-mapping method

Haotian Xu, Zexin Feng, Dewen Cheng, Yongtian Wang

Proceedings Volume 10815, 108151B (2018) https://doi.org/10.1117/12.2501083

KEYWORDS: Ray tracing, Freeform optics, Light emitting diodes, Geometrical optics, Lens design, Optical design, Light sources and illumination

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Proceedings Article | 2 November 2018 Paper

Fast calculation of CGH using improved symmetric compressed LUT algorithm

Tao Zhao, Juan Liu, Weiting Peng, Yongtian Wang

Proceedings Volume 10818, 1081803 (2018) https://doi.org/10.1117/12.2503469

KEYWORDS: Holograms, Computer generated holography, Algorithm development, Holography, 3D displays, Convolution, Algorithms

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Proceedings Article | 25 October 2018 Paper

Nanowire-based metamaterials electrodes for extremely fast charge collection

Yuyi Feng, Paul Kim, Clayton Nemitz, Kwang-Dae Kim, Yoonseok Park, Karl Leo, James Dorman, Jonas Weickert, Yongtian Wang, Lukas Schmidt-Mende

Proceedings Volume 10824, 1082409 (2018) https://doi.org/10.1117/12.2501666

KEYWORDS: Metamaterials, Plasmonics, Nanorods, Nanophotonics, Photonic nanostructures, Nanostructuring, Solar cells, Holograms, Satellites, Liquids

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SPIE Journal Paper | 22 June 2018

Enhancing data acquisition for calibration of optical see-through head-mounted displays

Zhenliang Zhang, Dongdong Weng, Jie Guo, Yue Liu, Yongtian Wang, Hua Huang

OE, Vol. 57, Issue 06, 063106, (June 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.6.063106

KEYWORDS: Calibration, Eye, Data acquisition, Cameras, Eye models, Error analysis, Optical calibration, Head-mounted displays, Optical engineering, Image segmentation

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Proceedings Article | 28 May 2018 Paper

Design of two-dimensional waveguide head-up display

Luo Gu, Dewen Cheng, Weihong Hou, Yongtian Wang

Proceedings Volume 10693, 106930G (2018) https://doi.org/10.1117/12.2312074

KEYWORDS: Waveguides, Heads up displays, Projection systems, Geometrical optics, Optical design

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Proceedings Article | 28 May 2018 Paper

Freeform road lighting lens design

Zexin Feng, Dewen Cheng, Yongtian Wang

Proceedings Volume 10693, 106930E (2018) https://doi.org/10.1117/12.2312452

KEYWORDS: Light sources and illumination, Roads, Freeform optics, Light emitting diodes, Ray tracing, Lens design, Monte Carlo methods, Computer simulations, Energy efficiency, Lamps

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Proceedings Article | 23 May 2018 Presentation

Near-field plasmonic beam engineering by complex amplitude modulation based on metasurface (Conference Presentation)

Lingling Huang, Xu Song, Lin Sun, Xiaomeng Zhang, Ruizhe Zhao, Xiaowei Li, Jia Wang, Benfeng Bai, Yongtian Wang, Thomas Zentgraf

Proceedings Volume 10672, 106721I (2018) https://doi.org/10.1117/12.2303819

KEYWORDS: Near field, Plasmonics, Amplitude modulation, Spiral phase plates, Wave propagation, Surface plasmon polaritons, Integrated nanophotonics, Plasmons, Numerical simulations, Beam shaping

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Proceedings Article | 21 May 2018 Paper

Design of an immersive head mounted display with coaxial catadioptric optics

Luo Gu, Dewen Cheng, Yongtian Wang

Proceedings Volume 10676, 106761F (2018) https://doi.org/10.1117/12.2315687

KEYWORDS: Polarization, Lens design, Head-mounted displays, Polarizers, Fresnel lenses, Aspheric lenses, Distortion

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The contradiction between large field of view, big exit pupil and large eye relief in immersive virtual reality (VR) head- mounted displays limits the probability that such bulky device would be accepted by the most consumers. Typical of the wide field of view optical systems, Oculus CV1 adopts the Fresnel lens as the eyepiece to display the magnified virtual image. However, complexity in fabricating the Fresnel lens makes the commercial VR products with it cost-inefficient, especially when both surfaces employ the Fresnel surface. A wide field of view coaxial catadioptric system is proposed to serve as the magnified optics in this paper, which consists of a wire grid polarizer, two quarter-wave plates and a powered lens, making the optics thinner and fabrication easier. Note that coated on the surface of one quarter-wave plate is a partially reflecting coating. The powered lens takes the role of imaging, while the wire grid polarizer and the quarter- wave plates work together to adjust the polarization orientation so as to suppress direct transmission. The resulting monocular optical system yields the field of view as large as 110°, with virtual image exhibited 5 meters away from the observer. Exit pupil diameter and eye relief of the designed system are 9 mm and 15 mm, respectively. Considerable distortion will appear inevitably when field of view approaches 100°, which could be tackled via electronic correction. With evaluation in the CODEV, weight of the whole monocular optics is about 35 grams and the distance from the element near the observer to the image source is as thin as 30 mm, showing that the suggested design is superior to the ones in the form of singlet, doublet and the singlet using aspheric surface or Fresnel, in terms of the weight, compactness and fabricating cost. With this monocular optical system, an HMD binocular optical system can be achieved in the form of partially overlapping field of view. The present design offers a solution to acquiring the light-weight and small- volume VR optics and making cost of the commercial VR products acceptable to the public at the same time.

Proceedings Article | 21 May 2018 Paper

Design and stray light analysis of a lenslet-array-based see-through light-field near-eye display

Cheng Yao, Dewen Cheng, Yongtian Wang

Proceedings Volume 10676, 106761A (2018) https://doi.org/10.1117/12.2315667

KEYWORDS: Stray light, Stray light analysis, Spatial light modulators, Lens design, 3D displays, Augmented reality

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Proceedings Article | 12 January 2018 Paper

A novel shape-changing haptic table-top display

Jiabin Wang, Lu Zhao, Yue Liu, Yongtian Wang, Yi Cai

Proceedings Volume 10620, 106200N (2018) https://doi.org/10.1117/12.2304283

KEYWORDS: 3D image processing, 3D displays, Image processing, Haptic technology, Visualization, Projection systems, 3D modeling, Information visualization, Calibration, Cameras

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Proceedings Article | 12 January 2018 Paper

E-Pad: a comfortable electrocutaneous-based tactile feedback display

Jiabin Wang, Lu Zhao, Yue Liu, Yongtian Wang, Yi Cai

Proceedings Volume 10620, 106200H (2018) https://doi.org/10.1117/12.2304290

KEYWORDS: Resistance, Skin, Electrodes, Switches, Human-machine interfaces, Haptic technology, Infrared imaging

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Proceedings Article | 31 October 2016 Paper

Optical design of a dual-channel two-focal-length system by utilizing azimuth property of PAL structure

Chen Xu, Dewen Cheng, Yongtian Wang

Proceedings Volume 10021, 100211V (2016) https://doi.org/10.1117/12.2246996

KEYWORDS: Optical design, Panoramic photography, Lens design, Zoom lenses, Imaging systems, Relays, Image sensors, Channel projecting optics, Sensors, Distortion

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Proceedings Article | 31 October 2016 Paper

Geometrical waveguide in see-through head-mounted display: a review

Qichao Hou, Qiwei Wang, Dewen Cheng, Yongtian Wang

Proceedings Volume 10021, 100210C (2016) https://doi.org/10.1117/12.2247323

KEYWORDS: Waveguides, Head-mounted displays, Freeform optics, Mirrors, Stray light, Polymethylmethacrylate, Eye, Projection systems, Refractive index, Glasses

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