OPTICAL SENSING DEVICE
    12.
    发明公开

    公开(公告)号:US20240319007A1

    公开(公告)日:2024-09-26

    申请号:US18518521

    申请日:2023-11-23

    Inventor: Ming-Ching Kuo

    CPC classification number: G01J1/44

    Abstract: An optical sensing device is provided. The optical sensing device includes an optical sensing element and a detection circuit. The optical sensing element senses an incident photon and generates a sensing signal. The detection circuit detects a pulse width of the sensing signal, and generates a reset signal when the pulse width is larger than a threshold value. Thereby, the optical sensing device is reset according to the reset signal and a dynamic range of the optical sensing device under strong ambient light will be further improved.

    Integrated superconducting nanowire digital photon detector

    公开(公告)号:US12098949B1

    公开(公告)日:2024-09-24

    申请号:US18241816

    申请日:2023-09-01

    Applicant: SeeQC, Inc.

    CPC classification number: G01J1/44 G01J1/0425 G06F1/10 H10N60/84 G01J2001/442

    Abstract: Superconducting nanowire single photon detectors have recently been developed for a wide range of applications, including imaging and communications. An improved detection system is disclosed, whereby the detectors are monolithically integrated on the same chip with Josephson junctions for control and data processing. This enables an enhanced data rate, thereby facilitating several new and improved applications. A preferred embodiment comprises integrated digital processing based on single-flux-quantum pulses. An integrated multilayer fabrication method for manufacturing these integrated detectors is also disclosed. Preferred examples of systems comprising such integrated nanowire photon detectors include a time-correlated single photon counter, a quantum random number generator, an integrated single-photon imaging array, a sensitive digital communication receiver, and quantum-key distribution for a quantum communication system.

    LIGHT RECEIVING ELEMENT AND RANGING SYSTEM
    15.
    发明公开

    公开(公告)号:US20240264309A1

    公开(公告)日:2024-08-08

    申请号:US18584352

    申请日:2024-02-22

    Inventor: TATSUKI NISHINO

    CPC classification number: G01S17/89 G01J1/44 H04N25/705 G01J2001/4466

    Abstract: The present technology relates to a light receiving element and a ranging system to reduce power consumption. A light receiving element includes a pixel which includes an SPAD, a first transistor configured to set a cathode voltage of the SPAD at a first negative voltage, a voltage conversion circuit configured to convert the cathode voltage of the SPAD upon incidence of a photon and output the converted cathode voltage, and an output unit configured to output a detection signal indicating the incidence of the photon on the SPAD on the basis of the converted cathode voltage. The present technology is applicable to a ranging system that detects a range in a depth direction to a subject, for example.

    OUTPUT CIRCUIT THAT OUTPUTS AMPLITUDE MODULATED SIGNAL HAVING VOLTAGE VALUE SELECTED FROM THREE OR MORE VOLTAGE VALUES

    公开(公告)号:US20240263996A1

    公开(公告)日:2024-08-08

    申请号:US18425067

    申请日:2024-01-29

    Inventor: SATORU MIKAJIRI

    CPC classification number: G01J1/44 H03K5/02 H03K17/56

    Abstract: Output circuit includes differential circuit arranged between first and second power supply lines, and switch and resistor connected in series between the first and second power supply lines. The differential circuit includes first differential output circuit including first positive-side output terminal and first negative-side output terminal, second differential output circuit including second positive-side output terminal and second negative-side output terminal, first output line connecting the first positive-side output terminal and the second positive-side output terminal, and second output line connecting the first negative-side output terminal and the second negative-side output terminal, amplitude modulated signal is output by the first and second output lines. The switch and the resistor suppress change in current flowing between the first and second power supply lines. The output circuit further includes disconnector to disconnect the second differential output circuit from the first differential output circuit.

    Photon avalanche diode having first, second, and third diodes formed in a semiconductor body

    公开(公告)号:US12057517B2

    公开(公告)日:2024-08-06

    申请号:US17993317

    申请日:2022-11-23

    Inventor: Henning Feick

    Abstract: A photon avalanche diode includes: first, second, and third diodes formed in a semiconductor body, the second diode being a photodiode; a main cathode terminal connected to the cathode of the first diode; a main anode terminal connected to the anode of the third diode; an auxiliary cathode terminal connected to the cathode of the second and third diodes; and an auxiliary anode terminal connected to the anode of the first and second diodes. The main anode terminal is electrically connected to ground or a reference potential. The main cathode terminal is electrically connected to a voltage which causes a photocarrier multiplication region to form within the semiconductor body. The auxiliary anode terminal is electrically connected to ground or to a read-out circuit. The auxiliary cathode terminal is electrically connected to a constant bias voltage less than a voltage applied to the main cathode terminal.

    Electronic device
    19.
    发明授权

    公开(公告)号:US12038323B2

    公开(公告)日:2024-07-16

    申请号:US17896063

    申请日:2022-08-25

    CPC classification number: G01J1/44 G01J2001/446 G01R31/31723

    Abstract: An electronic device is provided. The electronic device includes an electronic component and a sensing circuit. The sensing circuit is electrically connected to the electronic component through a sensing node. The sensing circuit comprises a first capacitor, a first transistor, a second transistor, a third transistor and a fourth transistor. The second transistor is electrically connected between the first capacitor and a control terminal of the first transistor. The third transistor is electrically connected to the first transistor. The fourth transistor is electrically connected to the first transistor. The first capacitor is electrically connected between the sensing node and the control terminal of the first transistor.

    Optical energy measuring device
    20.
    发明授权

    公开(公告)号:US12031862B2

    公开(公告)日:2024-07-09

    申请号:US18170214

    申请日:2023-02-16

    Inventor: Khalil Harrabi

    CPC classification number: G01J1/44 G01J1/4257 H10N60/84 G01J2001/442

    Abstract: An optical energy detector and a method for detecting a broad range of optical energy are disclosed. The detector comprising a superconducting nanowire filament on a substrate, an electrical current pulse source, a laser pulse source, a first pickup probe, and a second pickup probe for measuring the voltage across the filament. The filament is maintained below a supercomputing critical temperature. The filament is biased with an electrical current pulses slight below the critical current of the filament which creates nonequilibrium state. The filament is excited by the laser pulses, and as a result, a voltage appears after a delay time. The voltage is measured for determining the amount of the optical energy. A reference curve of the voltage and the corresponding delay time can be used for calibrating any light source.

Patent Agency Ranking