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公开(公告)号：US20220110522A1
公开(公告)日：2022-04-14
申请号：US17556884
申请日：2021-12-20
发明人： Juejun Hu , Tian GU , Mikhail Shalaginov , Fan YANG
摘要： Meta-lens based ocular imaging, near-eye display, and eye-tracking systems are described. The systems can include a single focusing optic and an integrated circuit that provides illumination light and includes an imaging array. The focusing optic includes meta-atoms formed on a substrate. The systems may have no moving parts and achieve imaging or image-projection fields-of-view approaching or exceeding 180 degrees. Because of their low part count, the systems can be robust and have a very small form factor.
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公开(公告)号：US11300777B2
公开(公告)日：2022-04-12
申请号：US16904149
申请日：2020-06-17
发明人： Junghyun Park , Sunghyun Nam
摘要： A varifocal lens includes a first phase plate and a second phase plate which are rotatable relative to each other about an optical axis. The first phase plate includes a plurality of first phase conversion elements, the second phase plate includes a plurality of second phase conversion elements, and the plurality of first phase conversion elements and the plurality of second phase conversion elements are arranged so that light transmitted through the first phase plate and the second phase plate is focused on different positions on the optical axis depending on a relative rotational displacement between the first phase plate and the second phase plate.
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公开(公告)号：US11298052B2
公开(公告)日：2022-04-12
申请号：US15121364
申请日：2015-02-26
IPC分类号： A61B5/0507 , A61B5/053 , G02B1/00 , A61B5/145 , A61B5/1455
摘要： There is provided a device arranged to couple electromagnetic radiation into or out of a biological material. The device comprises a first metamaterial comprising: a substrate component having a thickness no greater than a first wavelength of the electromagnetic radiation; and a plurality of elements supported by the substrate component, wherein each element has a first dimension no greater than a first wavelength of the electromagnetic radiation and at least two of the elements of the plurality of elements are non-identical.
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公开(公告)号：US20220086372A1
公开(公告)日：2022-03-17
申请号：US17498412
申请日：2021-10-11
摘要： A multi-modal imaging device can include a sensor array, a metamaterial filter, and a memory unit. The sensor array can be any suitable sensor which detects incoming light and is capable of recording a received image. The metamaterial filter can be oriented adjacent the sensor array and can be patterned with pixels having varied physical heights designed to diffract an incoming image to produce an engineered response which is sensitive to 2D spatial coordinates (x, y), time (t), and at least one of depth spatial coordinate (z), spectrum (λ), and degree of polarization ({right arrow over (S)}). The memory unit can include instructions that, when executed by a processor, reconstruct the engineered response to produce a reconstructed image which includes the 2D spatial coordinates and at least one of z, λ, and {right arrow over (S)}.
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125.发明申请公开(公告)号：US20220082794A1
公开(公告)日：2022-03-17
申请号：US17371387
申请日：2021-07-09
发明人： Seaum KIM , Hyunsung PARK , Seunghoon HAN , Hyeonsoo PARK
摘要： An optical hybrid lens includes a refractive lens having a curved lens surface, a metalens including at least one metasurface formed on the curved lens surface to follow the curved lens surface of the refractive lens and including a plurality of nanostructures having a shape dimension of a sub-wavelength of incident light, and an adhesive layer between the curved lens surface of the refractive lens and the metalens. The metalens includes at least one metasurface including a plurality of nanostructures having a shape dimension of a sub-wavelength of incident light.
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公开(公告)号：US20220082730A1
公开(公告)日：2022-03-17
申请号：US17200944
申请日：2021-03-15
发明人： Lei BI , Weihao YANG , Jun QIN , Jiawei LONG , Longjiang DENG
IPC分类号： G02B1/00
摘要： The disclosure provides a self-biased magneto-optical non-reciprocal metasurface device. The device includes substrate layer and a sub-wavelength structure layer. The substrate layer is a material layer with a refractive index of 1 to 5 in a microwave frequency band. The sub-wavelength structure layer includes a plurality of square columnar elements arranged in a matrix period with equal period in row and column directions. The square columnar elements include magneto-optical material. The adjustment of phase and amplitude of a circularly polarized electromagnetic wave is achieved by changing the length, width and height of the square columnar elements, and thus the device attains a desired isolation and insertion loss at a center frequency f0. The parameters of the magneto-optical material are: coercivity Hc≥1000 A/m; remanence Br≥1 kGs; a voigt parameter of a permittivity tensor or permeability tensor in a working frequency band≥0.01.
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公开(公告)号：US11255746B2
公开(公告)日：2022-02-22
申请号：US17113222
申请日：2020-12-07
发明人： Zeeshan Ahmed
摘要： A photonic resonator analyzer characterizes a photonic resonator and incudes a light source that provides a probe light; a photonic resonator that receives the probe light and produces product light; an optical detector that receives the product light and produces a product signal; a mode analyzer that receives the product signal and produces a resonator spectrum; and a spectral analyzer that receives the resonator spectrum, performs regression by fitting a non-parametric model to the resonator spectrum, and produces a thermal response function of the photonic resonator from fitting the non-parametric model to the resonator spectrum to characterize the photonic resonator.
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128.发明授权公开(公告)号：US11242262B2
公开(公告)日：2022-02-08
申请号：US15390853
申请日：2016-12-27
摘要： A method is provided for producing an article which is transparent to IR wavelength in the region of 4 μm to 9 μm. The method includes the steps of (a) Producing ultra-fine powders of ZnS, (b) followed by pretreatment of the ultra-fine powders under reduced gas conditions including H2, H2S, N2, Ar and mixtures there of (c) followed by vacuum (3×10−6 torr) treatment to remove oxygen and sulfates adsorbed to the surface disposing a plurality of nano-particles on a substrate, wherein said nanoparticles comprise ZnS with ultra-high purity of cubic phase; (b) subjecting the nano-particles to spark plasma sintering thereby producing a sintered ZnS product with IR transmission reaching 75% in the wavelength range of 4 μm to 9 μm.
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公开(公告)号：US20220018995A1
公开(公告)日：2022-01-20
申请号：US17032724
申请日：2020-09-25
申请人： Nankai University
发明人： Shuqi Chen , Wenwei Liu , Dina Ma , Hua Cheng , Jianguo Tian
摘要： The present disclosure provides a metalens array and a spatial positioning method based on the metalens array. The metalens array includes at least two metalenses, each of the metalenses comprises a plurality of prism cells, each of the prism cells comprises a silicon dioxide substrate and a titanium oxide prism placed on the silicon dioxide substrate, and the plurality of prism cells are arranged periodically.
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公开(公告)号：US11209580B2
公开(公告)日：2021-12-28
申请号：US16467583
申请日：2017-12-20
发明人： Steven Marc Gasworth
摘要： In an embodiment, an article comprises an infrared blocking layer comprising a host material (18) and a plurality of composite fibers (20); wherein each of the composite fibers of the plurality of composite fibers comprises a contrast material and a matrix material; wherein the contrast material forms a photonic crystal in the matrix material that when exposed to an infrared radiation manifests a photonic band gap. In another embodiment, a method of making an article comprises mixing a host material or a host polymer precursor and a plurality of composite fibers to form a mixture; and forming an infrared blocking layer from the mixture. In another embodiment, a method of making an article comprises one or both of forming a layered stack and co-extruding a host layer, a fiber layer, and an optional polymer layer.
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