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    Mobile robot and cliff detection method thereof
    11.
    发明授权
    Mobile robot and cliff detection method thereof 有权

    公开(公告)号：US12137855B2

    公开(公告)日：2024-11-12

    申请号：US17353818

    申请日：2021-06-22

    Applicant: PIXART IMAGING INC.

    Inventor： Keen-Hun Leong ,  Sai-Mun Lee ,  Ching-Geak Chan

    IPC: G06T5/50 ,  A47L11/40 ,  G05D1/00

    Abstract: There is provided a mobile robot including a light source, an image sensor and a processor. The image sensor respectively captures bright image frames and dark image frames corresponding to the light source being turned on and turned off. The processor identifies that the mobile robot faces a cliff when a gray level variation between the bright image frames and the dark image frames is very small, and controls the mobile robot to stop moving forward continuously.

    Optical mouse and light pipe thereof
    12.
    发明授权
    Optical mouse and light pipe thereof 有权

    公开(公告)号：US11372255B2

    公开(公告)日：2022-06-28

    申请号：US17246938

    申请日：2021-05-03

    Applicant: PixArt Imaging Inc.

    Inventor： Hun-Kwang Lee ,  Sai-Mun Lee ,  Priscilla Tze-Wei Goh ,  Lye-Pin Chu

    IPC: G02B27/09 ,  G06F3/03 ,  G06F3/0354

    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.

    DUAL MODE OPTICAL NAVIGATION DEVICE AND MODE SWITCHING METHOD THEREOF
    16.
    发明申请
    DUAL MODE OPTICAL NAVIGATION DEVICE AND MODE SWITCHING METHOD THEREOF 审中-公开

    公开(公告)号：US20180203530A1

    公开(公告)日：2018-07-19

    申请号：US15919698

    申请日：2018-03-13

    Applicant: PixArt Imaging Inc.

    Inventor： Sai-Mun Lee

    IPC: G06F3/0354 ,  G06F3/0346 ,  G06F3/0338 ,  G06F3/01 ,  G06F3/03

    CPC classification number: G06F3/03543 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0338 ,  G06F3/0346 ,  G06F3/0362

    Abstract: There is provided a mode switching method of a dual mode optical navigation device. The dual mode optical navigation device is configured to be operated on a working surface and has a first bottom surface and a second bottom surface having an included angle with the first bottom surface. The mode switching method includes: determining whether the first bottom surface or the second bottom surface contacts with the working surface; switching the dual mode optical navigation device to a first mode when identifying that the first bottom surface contacts with the working surface; and switching the dual mode optical navigation device to a second mode when identifying that the second bottom surface contacts with the working surface.

    Dual mode optical navigation device and mode switching method thereof
    17.
    发明授权
    Dual mode optical navigation device and mode switching method thereof 有权

    公开(公告)号：US09958965B2

    公开(公告)日：2018-05-01

    申请号：US15596595

    申请日：2017-05-16

    Applicant: PixArt Imaging Inc.

    Inventor： Sai-Mun Lee

    IPC: G06F3/0338 ,  G06F3/0354 ,  G06F3/01 ,  G06F3/03 ,  G06F3/0346

    CPC classification number: G06F3/03543 ,  G06F3/017 ,  G06F3/0304 ,  G06F3/0338 ,  G06F3/0346 ,  G06F3/0362

    Abstract: There is provided a mode switching method of a dual mode optical navigation device. The dual mode optical navigation device is configured to be operated on a working surface and has a first bottom surface and a second bottom surface having an included angle with the first bottom surface. The mode switching method includes: determining whether the first bottom surface or the second bottom surface contacts with the working surface; switching the dual mode optical navigation device to a first mode when identifying that the first bottom surface contacts with the working surface; and switching the dual mode optical navigation device to a second mode when identifying that the second bottom surface contacts with the working surface.

    Lens piece, lens assembly and imaging device including the same
    18.
    发明授权
    Lens piece, lens assembly and imaging device including the same 有权

    公开(公告)号：US12181688B2

    公开(公告)日：2024-12-31

    申请号：US17737488

    申请日：2022-05-05

    Applicant: PixArt Imaging Inc.

    Inventor： Wan-Piang Lim ,  Sai-Mun Lee

    IPC: G02B27/62 ,  G02B7/02

    Abstract: There is provided a lens piece and a lens assembly as well as an imaging device including the same. The lens assembly includes the lens piece and a lens barrel. The lens piece has a wing extending transversely from a lens sidewall. The lens barrel carries the lens piece, and includes a reservoir corresponding to the wing of the lens piece for containing adhesive.

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