Electromagnetic wave detection apparatus and information acquisition system

    公开(公告)号:US12072234B2

    公开(公告)日:2024-08-27

    申请号:US17047118

    申请日:2019-04-17

    摘要: An electromagnetic wave detection apparatus causes electromagnetic waves incident on a reference surface to propagate in a particular direction using each of the pixels, a detector to detect electromagnetic waves incident on a detection surface, and a second propagation unit that includes a first surface opposing the reference surface, a second surface opposing the detection surface, and a third surface intersecting the first and second surface. The third surface causes electromagnetic waves propagating in a first direction to propagate in a second direction. The first surface causes electromagnetic waves propagating in a second direction to be incident on the reference surface and causes electromagnetic waves re-incident from the reference surface to propagate in a third direction. The third surface causes electromagnetic waves propagating in the third direction to propagate in a fourth direction. The second surface emits electromagnetic waves propagating in the fourth direction to the detection surface.

    Aperiodic mirror array for suppressed side lobe intensity

    公开(公告)号:US12061288B2

    公开(公告)日:2024-08-13

    申请号:US17094655

    申请日:2020-11-10

    发明人: Yue Lu Youmin Wang

    摘要: A micro-electromechanical system (MEMS) micro-mirror arrays with an aperiodic structure is described. This avoids the undesired noise of sidelobes generated by the gaps between rows of mirrors, where a periodic structure forms a diffraction pattern. A MEMS apparatus has a MEMS mirror array structure with a plurality of rows. The widths of the rows are sized to be different, so that the pattern of gaps between rows is aperiodic. This has the effect of spreading diffraction nodes beyond the 0 order, thus limiting the interference of diffracted nodes and improving the signal to noise ratio. In particular, the width of a mirror will vary in different rows, while all of the mirrors in a particular row will have the same width and same size.

    Optical device and photodetection system

    公开(公告)号:US12013491B2

    公开(公告)日:2024-06-18

    申请号:US17020132

    申请日:2020-09-14

    摘要: An optical device includes: a first mirror having a first reflecting surface extending in a first direction and a second direction perpendicular to the first direction; a second mirror having a second reflecting surface; an optical waveguide layer that is located between the first and second mirrors and propagates light in the first direction; and an optical element that is disposed on the first mirror and emits incident light in a direction different from an incident direction. The optical element emits (1) incident light entering from the optical waveguide layer through the first mirror in a direction whose first direction component is smaller than that of an incident direction of the incident light by refraction and/or diffraction or (2) incident light entering from the outside in a direction whose first direction component is larger than that of an incident direction by refraction and/or diffraction.

    Light source position sensor
    19.
    发明授权

    公开(公告)号:US11988744B2

    公开(公告)日:2024-05-21

    申请号:US16978764

    申请日:2019-03-07

    摘要: There is provided a sensor device, a sensor module, and methods for determining a position of a light source. The sensor device comprises a plurality of sensor units, each sensor unit having a respective sensor area. The sensor device also comprises a mask disposed above the plurality of sensor units and arranged such that incident light from the light source will illuminate different regions of the sensor area of each one of the sensor units depending on the position of the light source relative to the sensor device. The position of the light source may therefore be determined based on which regions of the sensor area of the sensor units are illuminated. Further, each sensor unit is arranged to be controlled by a respective unit controller to determine the position of the light source.