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公开(公告)号：US12007505B2
公开(公告)日：2024-06-11
申请号：US18120903
申请日：2023-03-13
Applicant: Magic Leap, Inc.
Inventor： David Cohen , Assaf Pellman , Robert D. Tekolste , Shlomo Felzenshtein , Giora Yahav
IPC: G01S7/481 , G01S7/484 , G01S7/487 , G01S17/18 , G01S17/894 , G02B19/00 , G02B27/42 , G06T7/521 , H04N23/56
CPC classification number: G01S7/4815 , G01S7/484 , G01S7/4876 , G01S17/18 , G01S17/894 , G02B19/0009 , G02B27/425 , G06T7/521 , H04N23/56 , G02B19/009 , G06T2207/10028
Abstract: A time of flight based depth detection system is disclosed that includes a projector configured to sequentially emit multiple complementary illumination patterns. A sensor of the depth detection system is configured to capture the light from the illumination patterns reflecting off objects within the sensor's field of view. The data captured by the sensor can be used to filter out erroneous readings caused by light reflecting off multiple surfaces prior to returning to the sensor.
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公开(公告)号：US11868525B2
公开(公告)日：2024-01-09
申请号：US17627105
申请日：2020-07-15
Applicant: Magic Leap, Inc.
Inventor： David Cohen , Elad Joseph , Ron Nisim Ferens , Eyal Preter , Eitan Shmuel Bar-On , Giora Yahav
CPC classification number: G06F3/013 , G02B27/0093 , G02B27/0172 , G06T7/246 , G06T7/292 , G06T7/73 , G02B2027/014 , G02B2027/0138 , G02B2027/0178 , G06T2207/30201
Abstract: A display system can include a head-mounted display configured to project light to an eye of a user to display virtual image content at different amounts of divergence and collimation. The display system can include an inward-facing imaging system possibly comprising a plurality of cameras that image the user's eye and glints for thereon and processing electronics that are in communication with the inward-facing imaging system and that are configured to obtain an estimate of a center of rotation of the user's eye using cornea data derived from the glint images. The display system may render virtual image content with a render camera positioned at the determined position of the center of rotation of said eye.
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公开(公告)号：US11762462B2
公开(公告)日：2023-09-19
申请号：US17744506
申请日：2022-05-13
Applicant: Magic Leap, Inc.
Inventor： David Cohen
CPC classification number: G06F3/013 , G06V40/19 , G06V40/193 , G09G5/36 , G09G2354/00
Abstract: An eye tracking system can include an eye-tracking camera configured to obtain images of the eye at different exposure times or different frame rates. For example, longer exposure images of the eye taken at a longer exposure time can show iris or pupil features, and shorter exposure, glint images can show peaks of glints reflected from the cornea. The shorter exposure glint images may be taken at a higher frame rate (than the longer exposure images) for accurate gaze prediction. The shorter exposure glint images can be analyzed to provide glint locations to subpixel accuracy. The longer exposure images can be analyzed for pupil center or center of rotation. The eye tracking system can predict future gaze direction, which can be used for foveated rendering by a wearable display system.
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公开(公告)号：US11444109B2
公开(公告)日：2022-09-13
申请号：US17131346
申请日：2020-12-22
Applicant: Magic Leap, Inc.
Inventor： Erez Tadmor , David Cohen , Giora Yahav
IPC: H04N5/235 , H01L27/146 , H04N5/3745 , H04N5/232 , G01S11/00 , G01S17/894 , H04N5/341
Abstract: An image sensor device includes a plurality of pixel cells arranged in a pixel array, a control circuit for controlling an exposure phase and a sampling phase of the image sensor device. Each of the plurality of pixel cells includes a photodiode, a storage diode, and a floating diffusion region. The control circuit is configured to activate the photodiode in a plurality of time windows to sense light reflected from a target as a result of a corresponding plurality of emitted light pulses, with a pre-determined delay time between each time window and a corresponding emitted light pulse. The photodiode can be activated using a plurality of bias voltage pulses or a plurality of global shutter signal pulses.
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Patent Agency Ranking
公开(公告)号：US11240422B2
公开(公告)日：2022-02-01
申请号：US16846027
申请日：2020-04-10
Applicant: Magic Leap, Inc.
Inventor： Asaf Pellman , Erez Tadmor , David Cohen , Giora Yahav
IPC: H04N9/64 , H04N9/74 , H04N5/232 , G02B27/00 , G01S7/481 , H04N13/254 , G01S17/894 , G06T7/521 , G01S7/4865 , G01S17/42 , G02B5/20 , G02B13/14 , G02B27/10 , G02B27/14 , H04N5/225 , H04N5/235 , H04N5/238 , H04N5/343 , H04N5/347 , G02B1/11 , G02B27/30 , H04N5/378
Abstract: An imaging lens includes one or more lens elements configured to receive and focus light in a first wavelength range reflected off of one or more first objects onto an image plane, and to receive and focus light in a second wavelength range reflected off of one or more second objects onto the image plane. The imaging lens further includes an aperture stop and a filter positioned at the aperture stop. The filter includes a central region and an outer region surrounding the central region. The central region of the filter is characterized by a first transmission band in the first wavelength range and a second transmission band in the second wavelength range. The outer region of the filter is characterized by a third transmission band in the first wavelength range and substantially low transmittance values in the second wavelength range.
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公开(公告)号：US20210183923A1
公开(公告)日：2021-06-17
申请号：US17131346
申请日：2020-12-22
Applicant: Magic Leap, Inc.
Inventor： Erez Tadmor , David Cohen , Giora Yahav
IPC: H01L27/146 , H04N5/235 , H04N5/3745 , H04N5/232 , G01S11/00 , G01S17/894 , H04N5/341
Abstract: An image sensor device includes a plurality of pixel cells arranged in a pixel array, a control circuit for controlling an exposure phase and a sampling phase of the image sensor device. Each of the plurality of pixel cells includes a photodiode, a storage diode, and a floating diffusion region. The control circuit is configured to activate the photodiode in a plurality of time windows to sense light reflected from a target as a result of a corresponding plurality of emitted light pulses, with a pre-determined delay time between each time window and a corresponding emitted light pulse. The photodiode can be activated using a plurality of bias voltage pulses or a plurality of global shutter signal pulses.
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公开(公告)号：US20210116546A1
公开(公告)日：2021-04-22
申请号：US17088495
申请日：2020-11-03
Applicant: Magic Leap, Inc.
Inventor： David Cohen , Assaf Pelman , Robert D. TeKolste , Shlomo Felzenshtein , Giora Yahav
Abstract: A time of flight based depth detection system is disclosed that includes a projector configured to sequentially emit multiple complementary illumination patterns. A sensor of the depth detection system is configured to capture the light from the illumination patterns reflecting off objects within the sensor's field of view. The data captured by the sensor can be used to filter out erroneous readings caused by light reflecting off multiple surfaces prior to returning to the sensor.
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公开(公告)号：US10859676B2
公开(公告)日：2020-12-08
申请号：US15721232
申请日：2017-09-29
Applicant: Magic Leap, Inc.
Inventor： David Cohen , Assaf Pellman , Robert D. TeKolste , Shlomo Felzenshtein , Giora Yahav
Abstract: A time of flight based depth detection system is disclosed that includes a projector configured to sequentially emit multiple complementary illumination patterns. A sensor of the depth detection system is configured to capture the light from the illumination patterns reflecting off objects within the sensor's field of view. The data captured by the sensor can be used to filter out erroneous readings caused by light reflecting off multiple surfaces prior to returning to the sensor.
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公开(公告)号：US20180096489A1
公开(公告)日：2018-04-05
申请号：US15721640
申请日：2017-09-29
Applicant: Magic Leap, Inc.
Inventor： David Cohen , Assaf Pellman , Shai Mazor , Erez Tadmor , Giora Yahav
Abstract: A method for determining a distance to a target object includes transmitting light pulses to illuminate the target object and sensing, in a first region of a light-sensitive pixel array, light provided from an optical feedback device that receives a portion of the transmitted light pulses. The feedback optical device includes a preset reference depth. The method includes calibrating time-of-flight (TOF) depth measurement reference information based on the sensed light in the first region of the pixel array. The method further includes sensing, in a second region of the light-sensitive pixel array, light reflected from the target object from the transmitted light pulses. The distance of the target object is determined based on the sensed reflected light and the calibrated TOF measurement reference information.
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