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    Optical synapses
    1.
    发明授权
    Optical synapses 有权

    公开(公告)号：US11562221B2

    公开(公告)日：2023-01-24

    申请号：US16830333

    申请日：2020-03-26

    申请人： International Business Machines Corporation

    发明人： Stefan Abel ,  Bert Jan Offrein ,  Antonio La Porta ,  Pascal Stark

    IPC分类号： G11C16/10 ,  G06N3/067 ,  G02F1/19 ,  G11C11/42 ,  G11C11/54

    摘要： An optical synapse comprises a memristive device for non-volatile storage of a synaptic weight dependent on resistance of the device, and an optical modulator for volatile modulation of optical transmission in a waveguide. The memristive device and optical modulator are connected in control circuitry which is operable, in a write mode, to supply a programming signal to the memristive device to program the synaptic weight and, in a read mode, to supply an electrical signal, dependent on the synaptic weight, to the optical modulator whereby the optical transmission is controlled in a volatile manner in dependence on programmed synaptic weight.

    IMAGE SENSOR AND METHOD OF MAKING
    2.
    发明申请
    IMAGE SENSOR AND METHOD OF MAKING 有权

    公开(公告)号：US20230012344A1

    公开(公告)日：2023-01-12

    申请号：US17483962

    申请日：2021-09-24

    申请人： TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.

    发明人： Wei-Lin CHEN ,  Ching-Chung SU ,  Chun-Hao CHOU ,  Kuo-Cheng LEE

    IPC分类号： H01L27/146 ,  G02F1/19

    摘要： An image sensor includes a first photodiode and a second photodiode. The image sensor further includes a first color filter over the first photodiode; and a second color filter over the second photodiode. The image sensor further includes a first microlens over the first color filter and a second microlens over the second color filter. The image sensor further includes a first electro-optical (EO) film between the first color filter and the first microlens, wherein a material of the first EO film is configured to change refractive index in response to application of an electrical field. The image sensor further includes a second EO film between the second color filter and the second microlens, wherein a material of the second EO film is configured to change refractive index in response to application of an electrical field.

    Electrochemically tunable, solid-state metamaterial-based devices
    4.
    发明授权
    Electrochemically tunable, solid-state metamaterial-based devices 有权

    公开(公告)号：US11476555B1

    公开(公告)日：2022-10-18

    申请号：US16524021

    申请日：2019-07-27

    申请人： HRL Laboratories, LLC

    发明人： Christopher S. Roper

    IPC分类号： H01P7/08 ,  H01Q1/36 ,  G02F1/17 ,  G02F1/19 ,  H01Q15/00 ,  H01L45/00

    摘要： Disclosed are electrochemically tunable metamaterials which are capable of complete reversibility such that the metamaterial itself can physically disappear (out of the active region) and reappear later, in a controllable manner. Some variations provide an electrochemically tunable, solid-state metamaterial-based device comprising a plurality of metamaterial unit cells, wherein each of the metamaterial unit cells comprises: an ion conductor containing mobile metal ions; a first electrode in contact with the ion conductor, wherein the first electrode is contained in a metasurface negative space disposed on the ion conductor; a second electrode in contact with the ion conductor, wherein the second electrode is electrically isolated from the first electrode; and a metal-containing region containing one or more metals, wherein the metal-containing region is contained within a metasurface positive space disposed on the ion conductor.

    DISPLAY DEVICE
    5.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20220260834A1

    公开(公告)日：2022-08-18

    申请号：US17739722

    申请日：2022-05-09

    申请人： Japan Display Inc.

    发明人： Shigenori AOKI

    IPC分类号： G02B27/01 ,  G02F1/19 ,  G02B26/02

    摘要： According to an aspect, a display device includes: a display panel; a first optical component serving as a switchable optical component capable of being switched between a reflection state and a transmission state of light by a reflection surface thereof; and a second optical component. The reflection surface of the first optical component that faces the display panel is arranged on a light path extending from the display panel. The second optical component has a reflection surface. The reflection surface of the second optical component is on a path of light reflected by the first optical component.

    Tunable Lenses with Enhanced Performance Features
    8.
    发明申请
    Tunable Lenses with Enhanced Performance Features 有权

    公开(公告)号：US20210311356A1

    公开(公告)日：2021-10-07

    申请号：US17255452

    申请日：2019-07-22

    申请人： Optica Amuka (A.A.) Ltd.

    发明人： Yariv Haddad ,  Yuval Vardy ,  Alex Alon ,  Yoav Yadin

    IPC分类号： G02F1/1335 ,  G02F1/00 ,  G02F1/19 ,  G02F1/03

    摘要： Optical apparatus (38) includes an electro-optical layer (46), contained within a transparent envelope (43, 44) and having an effective local index of refraction at any given location that is determined by a voltage waveform applied across the electro-optical layer at the location. An array of excitation electrodes (50) is disposed over a surface of the transparent envelope. Control circuitry (42) is configured to apply voltage waveforms to the excitation electrodes so as to generate across at least a part of the active area of the electro-optical layer a phase modulation profile (60, 63, 64, 65, 66, 67, 70) comprising spatially alternating peaks (61) and troughs (62) separated by phase transitions chosen so as to emulate a Fresnel lens. The troughs have respective phase modulation depths that vary by at least one quarter wavelength at a nominal wavelength of 500 nm across at least the part of the active area of the electro-optical layer that emulates the Fresnel lens.