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    POWER-EFFICIENT HAND TRACKING WITH TIME-OF-FLIGHT SENSOR
    2.
    发明申请
    POWER-EFFICIENT HAND TRACKING WITH TIME-OF-FLIGHT SENSOR 有权

    公开(公告)号：US20240377540A1

    公开(公告)日：2024-11-14

    申请号：US18772067

    申请日：2024-07-12

    Applicant: Magic Leap, Inc.

    Inventor： David Cohen ,  Elad Joseph ,  Eyal Preter ,  Paul Lacey ,  Koon Keong Shee ,  Evyatar Bluzer

    IPC: G01S17/894 ,  G06F3/01 ,  G06F3/03

    Abstract: Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times.

    EYE-IMAGING APPARATUS USING DIFFRACTIVE OPTICAL ELEMENTS
    6.
    发明申请
    EYE-IMAGING APPARATUS USING DIFFRACTIVE OPTICAL ELEMENTS 有权

    公开(公告)号：US20220082833A1

    公开(公告)日：2022-03-17

    申请号：US17385554

    申请日：2021-07-26

    Applicant: Magic Leap, Inc.

    Inventor： Chunyu Gao ,  Chulwoo Oh ,  Michael Anthony Klug ,  Evyatar Bluzer

    IPC: G02B27/01 ,  H04N13/383 ,  G06T19/00 ,  H04N13/332 ,  H04N13/344 ,  G02B27/00

    Abstract: Examples of eye-imaging apparatus using diffractive optical elements are provided. For example, an optical device comprises a substrate having a proximal surface and a distal surface, a first coupling optical element disposed on one of the proximal and distal surfaces of the substrate, and a second coupling optical element disposed on one of the proximal and distal surfaces of the substrate and offset from the first coupling optical element. The first coupling optical element can be configured to deflect light at an angle to totally internally reflect (TIR) the light between the proximal and distal surfaces and toward the second coupling optical element, and the second coupling optical element can be configured to deflect at an angle out of the substrate. The eye-imaging apparatus can be used in a head-mounted display such as an augmented or virtual reality display.

    POWER-EFFICIENT HAND TRACKING WITH TIME-OF-FLIGHT SENSOR
    7.
    发明申请
    POWER-EFFICIENT HAND TRACKING WITH TIME-OF-FLIGHT SENSOR 有权

    公开(公告)号：US20210302587A1

    公开(公告)日：2021-09-30

    申请号：US17210152

    申请日：2021-03-23

    Applicant: Magic Leap, Inc.

    Inventor： David Cohen ,  Elad Joseph ,  Eyal Preter ,  Paul Lacey ,  Koon Keong Shee ,  Evyatar Bluzer

    IPC: G01S17/894 ,  G06F3/01 ,  G06F3/03

    Abstract: Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times .

    Power-efficient hand tracking with time-of-flight sensor
    10.
    发明授权
    Power-efficient hand tracking with time-of-flight sensor 有权

    公开(公告)号：US12066545B2

    公开(公告)日：2024-08-20

    申请号：US17210152

    申请日：2021-03-23

    Applicant: Magic Leap, Inc.

    Inventor： David Cohen ,  Elad Joseph ,  Eyal Preter ,  Paul Lacey ,  Koon Keong Shee ,  Evyatar Bluzer

    IPC: G01S17/894 ,  G06F3/01 ,  G06F3/03

    CPC classification number: G01S17/894 ,  G06F3/017 ,  G06F3/0325

    Abstract: Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times.

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