Meta-lenses are advanced flat optical devices composed of artificial nanoantenna arrays. It manipulates the wavefront of light with the advantages of ultrathin, compact, and no spherical aberration. We have developed a series of intelligent machine vision systems with binocular meta-lens for the novel applications of particle image velocimetry (PIV), underwater stereo vision, edge-enhanced depth perception for ill-posed regions, and assisted driving vision. Meta-lens PIV demonstrates a new development trend for the PIV technique for rejuvenating traditional flow diagnostic tools toward a more compact, easy-to-deploy technique. A novel stereo-matching neural network, H-Net, was proposed to derive the disparity information, which incorporates the cross-pixel and cross-view interaction operations. The developed machine vision systems facilitated underwater imaging and assisted driving vision. With binocular meta-lens, multimodal perceptions are provided for machine vision systems in various novel applications.
Meta-lens is an innovative planar optical device that uses subwavelength nano-antennas to control the wavefronts of light, enabling modulation for various applications. This study proposes a series of intelligent imaging systems based on meta-lenses for aerial, underwater, and land applications. Specifically, monocular, binocular, and multilocular meta-lenses are designed and fabricated for aerial, underwater, and land imaging and sensing applications, respectively. With the support of artificial intelligence, real-time intelligent sensing perception is achieved. This study expands the application scenarios and practical value of meta-devices, enabling mini-robots, autonomous systems, and advanced sensing for operating in multiple scenarios.
Multimodal perception is crucial for developing perceptual intelligence. Conventional multimodal sensing devices have limitations in device volume, the field of view, resolution, and imaging speed. Meta-devices, a new class of optical components, offer significant potential to revolutionize perception by manipulating light through nano-antennas. Our research demonstrates that meta-lenses can be used to integrate multiple perception modalities into a single compact device, with applications in robotics, autonomous vehicles, and mixed reality. Integrating meta-lens into perception systems could transform the field by providing low-cost, compact solutions for capturing information about the world in multiple ways.
Meta-lens is an emerging optical device which composed of artificial nanostructures can freely manipulate the phase and amplitude of light. Meta-lenses show excellent performance and novel applications to meet the optical demands. The fascinating advantages of meta-lenses are their new properties, lighter weight, small size, high efficiency, better performance, broadband operation, lower energy consumption, data volume reduction, and CMOS compatibility for mass production. We demonstrate an intelligent depth-sensing system prototype applicable for diverse scenes, a switchable stereo vision system that adopts a 60 × 60 achromatic meta-lens array to measure depth over a 30 cm range with the support of deep learning. This system combines a light field camera and a structured light system to adapt to all light levels. The design, application, and experimental verification of the intelligent depth-sensing meta-device are reported in this talk.
We inspired and learned from nature to develop the meta-lens array for intelligent imaging and sensing. The design, fabrication, and applications of the intelligent meta-lens array are reported in this talk. We developed the meta-lens array based light field imaging system for digital focusing, full-color imaging, depth sensing for static and dynamic objects, and 1D to 3D edge detection. This research shows the importance of optical meta-devices for next-generation optical imaging and sensing. We believe this opens up an avenue for future applications of optical devices in micro-robotic vision, unmanned-vehicle sensing, virtual and augmented reality, drones, and miniature personal-security systems.
Magic stairs, a staircase loop, is a kind of optical illusion. Such cognitive paradox is an inherent defect when two-dimensional (2D) images represent high-dimensional information. For this demand, we demonstrate an intelligent depth-sensing system prototype applicable for diverse scenes, a switchable stereo vision system that adopts a 60 × 60 achromatic meta-lens array to measure depth over a 30-cm range with the support of deep learning. This system combines a light field camera and a structured light system to adapt to all light levels. The design, application, and experimental verification of the intelligent depth-sensing meta-device are reported in this talk.
Optical meta-devices are composed of the collection of artificial subwavelength nanostructures. Phase, polarization, or amplitude of the incident electromagnetic waves can be manipulated by the specifically designed meta-devices. The demands of the new generation of photonics currently extend from classical to quantum optics. We report our progress in the design, fabrication, and application of the novel optical meta-devices from classical to quantum optics. We show a novel achromatic meta-lens array light field optical system for applications in imaging and sensing. We integrate a meta-lens array with a thin slice BBO nonlinear crystal to form a high-dimensional quantum entanglement optical chip. Results of the excellent mutual entanglement fidelity in 2-dimensional, 3-dimensional, and 4-dimensional experiments have successfully demonstrated the novel function of our high-dimensional optical quantum chip.
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