Optical unit
    24.
    发明授权

    公开(公告)号:US11977223B2

    公开(公告)日:2024-05-07

    申请号:US18103572

    申请日:2023-01-31

    IPC分类号: G02B26/08 G02B26/10 G02B27/00

    摘要: An optical unit includes: a base which includes a main surface; a mirror device which includes a movable mirror portion and is disposed on the base; a frame member that is provided on the main surface so as to surround the mirror device; and a window member that is bonded to the frame member and has a flat plate shape. The frame member includes a first wall portion which is provided on the main surface and includes a first top surface on the side opposite to the main surface, a second wall portion which is provided on the main surface so as to face the first wall portion and includes a second top surface on the side opposite to the main surface.

    METHOD FOR SCANNING FIELD CORRECTION AT LEAST OF A LASER SCANNER DEVICE, LASER SCANNER DEVICE, SCATTER PATTERN ELEMENT, SCATTER PATTERN HOLDING DEVICE AND SCANNING FIELD CORRECTION SYSTEM

    公开(公告)号:US20240134188A1

    公开(公告)日:2024-04-25

    申请号:US18276945

    申请日:2022-02-08

    IPC分类号: G02B27/00 G02B5/02 G02B26/10

    摘要: The invention relates to a method for scanning field correction at least of a laser scanner device (300), wherein the method comprises the following steps: —providing a scatter pattern element (30) on a processing plane (11), wherein the scatter pattern element (30) comprises at least one scatter region (31) which is arranged in a scatter pattern (M); —passing over or scanning at least one part of the scatter pattern element (30) on the processing plane (11) by means of a laser beam (12) of the at least one laser scanner device (300) along scanner coordinates (x, y, z), wherein the laser beam passes through at least one window (20), preferably protective glass, between a deflection unit (10) and the processing plane (11); —detecting scatter radiation (13) which can be generated by scattering and/or reflection of the laser beam (12) when passing over or scanning the at least one scatter region (31); —creating a contour diagram (K) by correlating the detected scatter radiation (13) with the scanner coordinates (x, y, z); —comparing the contour diagram (K) with a reference image of the scatter pattern (M) and determining a deviation of the contour diagram (K) from the reference image of the scatter pattern (M); —calculating a calibration function for calibrated control of the deflection unit (10) on the basis of the determined deviation.

    Laser measurement module and laser radar

    公开(公告)号:US11960031B2

    公开(公告)日:2024-04-16

    申请号:US17846883

    申请日:2022-06-22

    摘要: Embodiments of this application disclose a laser measurement system and a laser radar. In one aspect, a laser measurement system includes N laser ranging components, a reflector, and MEMS micromirror. The N laser ranging components can emit an emergent light beam onto the reflector. The reflector can perform optical path reflecting on the emergent light beam and emit the reflected emergent light beam onto the MEMS micromirror. The MEMS micromirror can change a direction of the emergent light beam to implement two-dimensional scanning, change a direction of an echo light beam, and emit this beam onto the reflector. The reflector can perform optical path reflecting on the echo light beam and emit this beam onto the N laser ranging components. The N laser ranging components can receive the echo light beam and perform ranging based on a time difference between the emergent light beam and the echo light beam.