A compact and lightweight off-axis lightguide prism in near to eye display

Zhuang, Zhenfeng; Cheng, Qijia; Surman, Phil; Zheng, Yuanjin; Sun, Xiao Wei

doi:10.1016/j.optcom.2017.02.047

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…In recent years, augmented reality (AR) has received a lot of interest due to its ability to fuse virtual information with real situations. 1,2 Currently, according to the type of coupling elements, AR technologies are divided into the solutions of the split-beam prism, 3 free-form surface, 4 retinal projection, 5 and optical waveguide. 6 Compared to the other solutions, the optical waveguide is considered to be the most promising solution for AR because of its lightweight, small size, expandable pupil, large field of view (FOV), and appearance closer to eyeglasses.…”

Section: Introductionmentioning

confidence: 99%

Holographic waveguide display with large field of view based on volume holographic grating

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Holographic waveguide display with large field of view based on volume holographic grating

et al. 2023

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“…Digital Object Identifier 10.1109/JPHOT.2021.3127547 efficiency, exit pupil size and other parameters, which affect the performance of the entire display system. Currently, the more mainstream technical solutions include beam splitting prism [3], free-form surface [4], Maxwellian display [5], [6] and optical waveguide [7]. The optical waveguide can obtain a larger eye movement range while keeping its volume and weight as small as possible, which is considered to be the most promising technical solution.…”

Section: Introductionmentioning

confidence: 99%

Holographic Waveguide Display With Large Field of View and High Light Efficiency Based on Polarized Volume Holographic Grating

Weng

Wei

et al. 2022

IEEE Photonics J.

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We propose a polarization multiplexing structure based on multilayer reflective polarized volume holographic gratings(PVGs) to improve the field of view and brightness of the augmented reality waveguide display. The multilayer structure forms the splicing of different response bandwidths by stacking PVGs with different periodic components, and realizes the expansion of the wavelength (angle) bandwidth. The polarization multiplexing structure controls the polarization of the diffracted light by controlling the rotation direction of the liquid crystal pitch in the liquid crystal material, so that both left-hand and right-hand circularly polarized light are diffracted to enhance efficiency. Based on these two structures, the wavelength bandwidth of PVG is increased by 40 nm, the angular bandwidth is increased by 10°and the diffraction efficiency is nearly doubled. In order to verify the feasibility of these two structures, we use the holographic waveguide display with OLED as the image source. The demonstrated waveguide prototype shows a complete display with a diagonal field of view of 55°. The brightness of virtual image was measured as high as 1100 cd/m 2 with a transparency of 72% for ambient light.

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Locating optimal freeform surfaces for off-axis optical systems

Xiao

Chen

et al. 2020

Optics Communications

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A compact and lightweight off-axis lightguide prism in near to eye display

Cited by 5 publications

References 15 publications

Holographic waveguide display with large field of view based on volume holographic grating

Holographic waveguide display with large field of view based on volume holographic grating

Holographic Waveguide Display With Large Field of View and High Light Efficiency Based on Polarized Volume Holographic Grating

Locating optimal freeform surfaces for off-axis optical systems

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