Journal of the Knowledge Economy, Journal Year: 2024, Volume and Issue: unknown
Published: Feb. 3, 2024
Language: Английский
Advances in Optics and Photonics, Journal Year: 2022, Volume and Issue: 14(4), P. 783 - 783
Published: Sept. 15, 2022
Augmented reality (AR) and virtual (VR) have the potential to revolutionize interface between our physical digital worlds. Recent advances in processing, data transmission, optics, display technologies offer new opportunities for ubiquitous AR/VR applications. The foundation of this revolution is based on systems with high image fidelity, compact formfactor, optical efficiency. In review paper, we start by analyzing human vision system architectures then manifest main requirements light engines. Next, working principles six engines, namely transmissive liquid crystal display, reflective liquid-crystal-on-silicon microdisplay, processing micro light-emitting-diode organic laser beam scanning displays, are introduced. According characteristics these perspectives challenges each technology analyzed through five performance metrics, resolution density, response time, efficiency/brightness/lifetime, dynamic range, compactness. Finally, solutions overcoming discussed.
Language: Английский
Citations
109
eLight, Journal Year: 2023, Volume and Issue: 3(1)
Published: Dec. 7, 2023
Abstract Augmented reality (AR) displays, as the next generation platform for spatial computing and digital twins, enable users to view images superimposed on real-world environment, fostering a deeper level of human-digital interactions. However, critical element in an AR system, optical combiners face unprecedented challenges match exceptional performance requirements human vision system while keeping headset ultracompact lightweight. After decades extensive device material research efforts, heavy investment manufacturing technologies, several promising waveguide have been developed. In this review paper, we focus perspectives displays. We will begin by introducing basic structures operation principles different architectures, then delve into combiners, including geometric diffractive combiners. Some commonly used in-couplers out-couplers, such prisms, mirrors, surface relief gratings, volume holographic polarization metasurface-based couplers, be discussed, their properties analyzed detail. Additionally, explore recent advances combiner design modeling, exit pupil expansion, wide field view, architectures full-color propagation, brightness color uniformity optimization. Finally, discuss bottlenecks future development trends technologies. The objective is provide comprehensive overview current state analyze pros cons, present
Language: Английский
Citations
92
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(7)
Published: May 11, 2023
Abstract The field of next‐generation microdisplays is flourishing. Relevant display technologies, such as mini‐light emission diodes (mini‐LEDs), micro‐organic light (micro‐OLEDs), and micro‐light (micro‐LEDs) are thus in the urgent stage development. From this perspective, comprehensive systematical analyzes conducted for aforesaid microdisplay configurations. A holistic view technologies developed with corresponding performance metrics, providing a path miscellaneous scenarios. Among these scenarios, applications augmented reality (AR), virtual (VR), wearable devices, head‐up displays (HUD) currently attracting considerable attention deeper human‐digital interactions. However, there multiplicity obstacles challenges hindering Nevertheless, recent advances hold tremendous promise paradigms applications, taking leap forward microdisplays. This review presents perspectives, relevant materials, technology landscape ongoing offering guidance on design advanced
Language: Английский
Citations
82
Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)
Published: Jan. 15, 2024
Abstract Holographic 3D display is highly desirable for numerous applications ranging from medical treatments to military affairs. However, it challenging simultaneously achieve large viewing angle and high-fidelity color reconstruction due the intractable constraints of existing technology. Here, we conceptually propose experimentally demonstrate a simple feasible pathway using well-designed liquid crystal grating overcome inevitable chromatic aberration enlarge holographic angle, thus enabling large-viewing-angle display. The use allows performing secondary diffraction modulation on red, green blue reproduced images extending in system. In principle, aberration-free hologram generation mechanism combination with proposed pave way such superior system shows ~50.12°, which about 7 times that traditional single spatial light modulator. This work presents paradigm achieving display, expected provide new wide application
Language: Английский
Citations
71
Journal of Physics Photonics, Journal Year: 2023, Volume and Issue: 5(4), P. 042502 - 042502
Published: Sept. 13, 2023
Abstract Micro light-emitting diode (micro-LED) will play an important role in the future generation of smart displays. They are found very attractive many applications, such as maskless lithography, biosensor, augmented reality (AR)/mixed etc, at same time. A monitor that can fulfill saturated color rendering, high display resolution, and fast response time is highly desirable, micro-LED-based technology could be our best chance to meet these requirements. At present, semiconductor-based red, green blue micro-LED chips color-conversion enhanced micro-LEDs major contenders for full-color high-resolution Both technologies need revolutionary ways perfect material qualities, fabricate device, assemble individual parts into a system. In this roadmap, we highlight current status challenges micro-LED-related issues discuss possible advances science stand up challenges. The innovation epitaxy, tunnel junction, direct epitaxy nitride-based quantum wells red ultraviolet, provide critical solutions performance various aspects. scale structure, like nanowires or nanorods, crucial scaling devices. Meanwhile, conversion method, which uses colloidal dot active material, hassle-free way large array emphasis demonstration via dot. These dots patterned by porous inkjet, photo-sensitive resin. addition devices, peripheral components equally important. Microchip transfer repair, heterogeneous integration with electronics, novel 2D cannot ignored, overall module power-consuming. AR one potential customers displays, user experience so far limited due lack truly qualified display. Our analysis showed on addressing solving problems, loss optical coupling narrow field view. All efforts channeled achieve efficient all ideal qualities most stringent viewing requirements, expect it become indispensable part daily life.
Language: Английский
Citations
67
Laser & Photonics Review, Journal Year: 2023, Volume and Issue: 17(11)
Published: Oct. 2, 2023
Abstract Tunable liquid lenses with controllable focal length attract much attention from many researchers due to the unique advantages of strong adjustability, low power consumption, fast response time, and easy integration. In last two decades, tunable have already been applied in machine vision, code scanner cameras, cellphone webcams, microscopes, mini projectors, AR/VR displays, 3D so on. There is no doubt that play an increasingly more important role field optical technology. this review, research background significance are introduced. systematically qualified according driving mechanism, their current status latest progress presented detail. The existing problems, directions for future research, potential applications also discussed.
Language: Английский
Citations
65
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(32)
Published: March 7, 2023
Abstract Quantum dot light‐emitting diodes (QLEDs), owing to their exceptional performances in device efficiency, color purity/tunability the visible region and solution‐processing ability on various substrates, become a potential candidate for flexible ultrathin electroluminescent (EL) lighting display. Moreover, beyond display, QLEDs are enabled with endless possibilities era of internet things artificial intelligence by acting as input/output ports wearable integrated systems. Challenges remain development goals high performance, excellent flexibility/even stretchability, emerging applications. In this paper, recent developments including quantum materials, working mechanism, flexible/stretchable strategies patterning strategies, highlight its multifunctional integrations smart applications covering optical medical devices, pressure‐sensing EL neural reviewed. The remaining challenges also summarized an outlook future made. review is expected offer systematic understanding valuable inspiration simultaneously satisfy optoelectronic properties
Language: Английский
Citations
63
Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)
Published: Sept. 15, 2023
Diffractive liquid-crystal optics is a promising optical element for virtual reality (VR) and mixed as it provides an ultrathin formfactor lightweight human factors ergonomics. However, its severe chromatic aberrations impose big challenge full-color display applications. In this study, we demonstrate achromatic diffractive device to overcome longstanding aberration issue. The proposed consists of three stacked liquid crystal elements with specifically designed spectral response polarization selectivity. concept validated by both simulations experiments. Our experimental results show significant improvement in imaging performance two types light engines: laser projector organic light-emitting diode panel. addition, our simulation indicate that the lateral color shift reduced ~100 times comparison conventional broadband lens. Potential applications VR-enabled metaverse, spatial computing, digital twins have found widespread smart tourism, education, healthcare, manufacturing, construction are foreseeable.
Language: Английский
Citations
58
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(5)
Published: Jan. 11, 2023
Abstract Next‐generation holographic displays have promising applications in medical science, augmented/virtual reality, smart security, data encryption, etc. Although metasurfaces emerged as the suitable choice to provide compact displays, multifunctionality at broadband optical wavelengths is inevitable for abovementioned applications. Here, a metasurface demonstrated based on chiral structures introduce terms of multiple wavefront information depending upon polarization incident light. The proposed integrated with liquid crystal (LC) provides fast switching and dynamic response visible transmission mode. To avoid phase distortion embedded into single planar metasurface, z‐shaped meta‐atoms are used high diffraction efficiency chirality circularly polarized (CP) light illuminations. mask encoded using combination geometric modulation techniques. experimental validation designed performed reproduce spin‐dependent‐specific changing This research may pave way toward designing highly efficient multifunctional metadevices produce next‐generation healthcare, media, encryption.
Language: Английский
Citations
50
Deleted Journal, Journal Year: 2023, Volume and Issue: 4(3), P. 1 - 1
Published: Jan. 1, 2023
angle holographic 3D display system based
Language: Английский
Citations
49