ELECTRON TUBE AND IMAGING DEVICE
    2.
    发明申请

    公开(公告)号:US20220319794A1

    公开(公告)日:2022-10-06

    申请号:US17619686

    申请日:2020-06-19

    IPC分类号: H01J31/48 H01J29/86

    摘要: An electron tube includes a housing that is internally held in a vacuum and has a window transmitting an electromagnetic wave, an electron emitting unit that is disposed in the housing and has a meta-surface emitting electrons in response to incidence of the electromagnetic wave, an electron multiplying unit that is disposed in the housing and multiplies the electrons emitted from the electron emitting unit, and an electron collecting unit that is disposed in the housing and collects the electrons multiplied by the electron multiplying unit. The window contains at least one selected from quartz, silicon, germanium, sapphire, zinc selenide, zinc sulfide, magnesium fluoride, lithium fluoride, barium fluoride, calcium fluoride, magnesium oxide, and calcium carbonate.

    GAMMA STIMULATION PULSING LIGHT SOURCE SYSTEM WITH DOSAGE ADJUSTMENT FOR GAZE ANGLE

    公开(公告)号:US20220134047A1

    公开(公告)日:2022-05-05

    申请号:US17084275

    申请日:2020-10-29

    摘要: Gamma brain stimulation for preventing or treating Alzheimer's disease or sleeping disorders using light or sound is known. A strobing 40 Hz light source has been shown to cause positive effects due to the stimulation. It is an advantage to know the actual dosage of light that enters the person's eyes in order to understand the relationship between dosage and effectiveness. A camera is used to detect the subject's gaze angle, distance, pupil diameter and any other factors that affect the light power that enters the eye. A target dosage is first determined by a medical worker, such as to determine the effects of the exact same dosage on a group persons, such as Alzheimer's patients. With deviations of gaze angle, distance, and pupil size from the ideal, the effective dosage is decreased. The disclosed system adjusts the actual dosage, such as session duration, based on such factors so that the final dosage received by the person is consistent and meets the target dosage.

    All-optical pressure sensor
    9.
    发明授权

    公开(公告)号:US09658123B2

    公开(公告)日:2017-05-23

    申请号:US14896357

    申请日:2014-06-04

    IPC分类号: G01L9/00 G01L23/16 H04R23/00

    摘要: The present invention relates to an all-optical pressure sensor comprising a waveguide accommodating a distributed Bragg reflector. Pressure sensing can then be provided by utilizing effective index modulation of the waveguide and detection of a wavelength shift of light reflected from the Bragg reflector. Sound sensing may also be provided thereby having an all-optical microphone. One embodiment of the invention relates to an optical pressure sensor comprising at least one outer membrane and a waveguide, the waveguide comprising at least one core for confining and guiding light, at least one distributed Bragg reflector located in said at least one core, and at least one inner deflecting element forming at least a part of the core, wherein the pressure sensor is configured such that the geometry and/or dimension of the at least one core is changed when the at least one outer membrane is submitted to pressure.

    REFRACTIVE INDEX BASED MEASUREMENTS
    10.
    发明申请
    REFRACTIVE INDEX BASED MEASUREMENTS 审中-公开
    基于折射指数的测量

    公开(公告)号:US20160091421A1

    公开(公告)日:2016-03-31

    申请号:US14888391

    申请日:2014-03-18

    IPC分类号: G01N21/45

    摘要: In a method for performing a refractive index based measurement of a property of a fluid such as chemical composition or temperature, a chirp in the local spatial frequency of interference fringes of an interference pattern is reduced by mathematical manipulation of the recorded light intensity in the interference pattern or by the physical positioning and arrangement of a detector used for capturing the interference pattern.

    摘要翻译: 在用于进行基于折射率的诸如化学成分或温度等流体性质的测量的方法中,干涉图案的干涉条纹的局部空间频率中的啁啾通过数学处理干涉中记录的光强度而被减少 图案或通过用于捕获干涉图案的检测器的物理定位和布置。