Multiview holographic 3D display based on blazed Fresnel DOE

Hua, Jianyu; Yi, Donghui; Qiao, Wen; Chen, Linsen

doi:10.1016/j.optcom.2020.125829

Cited by 14 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The flat glass serves as a waveguide by total internal reflection. The patterned metagratings, acting as both amplitude and phase-manipulating units, project light beams to desired views. − Because of the high diversity in the incident angle of the guided light, the structural profile of each metagrating is designed based on its position. With high transmittance and strong light modulating capability, the metagrating-based waveguide reconstructs a 3D virtual image and fuses the virtuality with reality.…”

Section: Resultsmentioning

confidence: 99%

Bidirectional Augmented Reality 3D Signage Enabled by a Metagrating Waveguide

Liu,

Zhou,

Xia

et al. 2023

ACS Photonics

Self Cite

View full text Add to dashboard Cite

In this article, we proposed a see-through three-dimensional (3D) signage system that can be observed on both sides. It comprises two parts: a light emitting diode light source and an edge-lit waveguide embossed with pixelated metagratings. Two sets of sparsely distributed metagrating matrices were carefully designed to reconstruct a dual-color 3D virtual scene while maintaining high transparency. The transparency of the waveguide was above 70%, and the complex wavelet structural similarity value was 0.93, suggesting a high image fidelity for objects seen through the waveguide. 3D virtual images with correct motion parallax were obtained at both the front view and back view. The viewing angle of the 3D signage was 60°. The proposed augmented reality 3D signage features high transparency, bicolor, wide viewing angle with nonrepeating views, and thin format. Potential applications include window displays, colored signage, and advertisements.

show abstract

Section: Resultsmentioning

confidence: 99%

Bidirectional Augmented Reality 3D Signage Enabled by a Metagrating Waveguide

Liu,

Zhou,

Xia

et al. 2023

ACS Photonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Among them, multi-view 3D displays based on geometrical optics (e.g., parallax barriers, lenticular lens and microlens array), due to the limitation of numerical aperture, has weak modulation ability for large-angle light, resulting in limited FOV with continuous motion parallax [9,10]. Reconstructing the 3D light field based on pixelated nanostructure matrix can solve the problem of limited freedom and accuracy of light field reconstruction by the view modulator [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Vector light field 3D display with multi-directional backlight

Li¹,

Qiao²

2023

International Conference on Precision Instruments and Optical Engineering (PIOE 2022)

Self Cite

View full text Add to dashboard Cite

Glasses-free three-dimensional (3D) display has attracted widespread attention because of its multi-perception, interactivity and immersion features. Limited by the resolution of the display, the number of views and the spatial resolution of the views are contradictory. In this paper, we propose a vector light field display with multi-directional backlight, which is realized by two directional backlight illumination display modules. By analyzing the deflection error of diffracted light, a suitable directional backlight angular separation is designed. Experimental results show that the proposed prototype generates full-color 3D images that satisfies binocular parallax for the observer, effectively eliminates the gaps between views. The multi-directional backlight module is adopted to maximize the use of the number of views and expand the field of view (FOV). Potential applications include entertainment, exhibition displays, and education.

show abstract

“…DOEs are important building blocks in science and technology for their ultra-thin and lightweight form factors and excellent off-axis imaging performance [8][9][10] and are currently used in holographic displays [11,12], beam-shaping [13,14], and computational imaging [15,16]. Such thin and lightweight surfaces provide remarkable control on the phase, polarization and spectrum of light.…”

Section: Introductionmentioning

confidence: 99%

End-to-End Optimization of an Achromatic Diffractive Optical Element Array for Integral Imaging Three-Dimensional Display

Wang

Gao

et al. 2022

IEEE Photonics J.

View full text Add to dashboard Cite

Diffractive optical element (DOE) array promises compact shape for full-parallax integral imaging threedimensional (3D) display. However, DOEs suffer from large chromatic aberration due to the strong wavelength-dependent nature of diffraction phenomena that degrade the quality of reconstructed 3D images. An end-to-end DOE optimization approach is proposed to reduce chromatic aberration for integral imaging. The end-to-end optimization framework includes RGB pre-processing convolutional neural networks and achromatic optics optimization design of rotationally symmetric DOE. An optical display model based on diffractive optics is proposed to analyze the integral imaging 3D display process for achromatic optical optimization design. The pre-processed elemental image arrays are modulated by an optimized DOE array to reconstruct the achromatic 3D images. A 3D artifacts scene without chromatic aberration is reconstructed in different views with the proposed method, and both peak signal to noise ratio (PSNR) and structural similarity (SSIM) are improved compared to the conventional Fresnel lens DOE.

show abstract

Multiview holographic 3D display based on blazed Fresnel DOE

Cited by 14 publications

References 27 publications

Bidirectional Augmented Reality 3D Signage Enabled by a Metagrating Waveguide

Bidirectional Augmented Reality 3D Signage Enabled by a Metagrating Waveguide

Vector light field 3D display with multi-directional backlight

End-to-End Optimization of an Achromatic Diffractive Optical Element Array for Integral Imaging Three-Dimensional Display

Contact Info

Product

Resources

About