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公开(公告)号：US11994424B2
公开(公告)日：2024-05-28
申请号：US17569171
申请日：2022-01-05
申请人： STMicroelectronics (Research & Development) Limited , STMicroelectronics (Grenoble 2) SAS , STMicroelectronics (Crolles 2) SAS
IPC分类号： G01J1/42 , G09G3/3225 , H04N25/53 , H05B47/105
CPC分类号： G01J1/4204 , G09G3/3225 , H04N25/53 , H05B47/105 , G09G2320/0626 , G09G2360/144
摘要： In an embodiment a method for measuring ambient light includes successively synchronizing optical signal acquisition phases with extinction phases of a disruptive light source, wherein the disruptive light source periodically provides illumination phases and the extinction phases, accumulating, in each acquisition phase, photo-generated charges by at least one photosensitive pixel comprising a pinned photodiode, wherein an area of the pinned photodiode is less than or equal to 1/10 of an area of the at least one photosensitive pixel, transferring, for each pixel, the accumulated photo-generated charges to a sensing node, converting, for each pixel, the transferred charges to a voltage at a voltage node and converting, for each pixel, the transferred charges to a digital number.
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公开(公告)号：US20240151579A1
公开(公告)日：2024-05-09
申请号：US18492903
申请日：2023-10-24
发明人： Jeffrey M. Raynor
CPC分类号： G01J1/4204 , G01J1/44 , G01J2001/446
摘要： A common centroid ambient light sensor includes a matrix of photodiodes having exactly a first row and a second row, at least three color channels, a readout circuit of the first color channel connected to exactly one photodiode in the first row and exactly one photodiode in the second row, and a readout circuit of the second color channel connected to exactly one photodiode in the first row and exactly one photodiode in the second row.
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公开(公告)号：US20240145503A1
公开(公告)日：2024-05-02
申请号：US17975178
申请日：2022-10-27
发明人： Mohammed AL-RAWHANI , Bruce RAE
IPC分类号： H01L27/146 , H01L31/107
CPC分类号： H01L27/14616 , H01L27/14643 , H01L31/107
摘要： Disclosed herein is a single photon avalanche diode (SPAD) pixel for use in time-of-flight imaging. This pixel includes a SPAD having a cathode connected to a first node and an anode coupled to first negative voltage. A transistor circuit in the pixel includes a quench transistor connected between a supply voltage node and a second node, the quench transistor controlled by a quench control signal to operate in a high-impedance mode, and a recharge transistor connected in parallel with the quench transistor between the supply voltage node and the second node, the recharge transistor controlled by a feedback signal. The pixel also includes a readout inverter generating an output signal based upon a voltage at the first node and an adjustable delay circuit generating the feedback signal based upon the output signal, the feedback signal being delayed with respect to the output signal.
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公开(公告)号：US11962900B2
公开(公告)日：2024-04-16
申请号：US16998567
申请日：2020-08-20
发明人： Neale Dutton , Stuart McLeod , Bruce Rae
IPC分类号： H04N23/67 , G01S7/481 , G01S7/4863 , G01S17/86 , G01S17/894 , H01S5/183 , H04M1/02 , H04N23/90 , H04N25/443
CPC分类号： H04N23/67 , G01S7/4815 , G01S7/4863 , G01S17/86 , G01S17/894 , H04M1/0202 , H04N23/90 , H04N25/443 , H01S5/183 , H04M2250/12 , H04N23/671
摘要： In some embodiments, a ToF sensor includes an illumination source module, a transmitter lens module, a receiver lens module, and an integrated circuit that includes a ToF imaging array. The ToF imaging array includes a plurality of SPADs and a plurality of ToF channels coupled to the plurality of SPADs. In a first mode, the ToF imaging array is configured to select a first group of SPADs corresponding to a first FoV. In a second mode, the ToF imaging array is configured to select a second group of SPADs corresponding to a second FoV different than the first FoV.
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公开(公告)号：US20240077592A1
公开(公告)日：2024-03-07
申请号：US17939471
申请日：2022-09-07
发明人： John Kevin Moore
IPC分类号： G01S7/4861 , G01S7/4865 , G01S17/10
CPC分类号： G01S7/4861 , G01S7/4865 , G01S17/10
摘要： An optical ranging system includes: a first phase-locked loop (PLL) configured to generate a first frequency signal and a second frequency signal; a second PLL configured to generate a third frequency signal based on a control signal that is formed using the first frequency signal; an optical source coupled to the second PLL, where an intensity of an optical signal emitted by the optical source is configured to be modulated in accordance with the third frequency signal; a first single-photon avalanche diode (SPAD) configured to receive a reflected optical signal; a time-to-digital converter (TDC) coupled to the first SPAD, where the TDC is configured to generate digital samples by sampling an output signal of the first SPAD under control of the second frequency signal; a reference signal generator configured to generate a reference signal; and a mixer configured to mix the reference signal and the digital samples from the TDC.
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公开(公告)号：US20240063235A1
公开(公告)日：2024-02-22
申请号：US18386859
申请日：2023-11-03
发明人： Francois GUYADER , Sara PELLEGRINI , Bruce RAE
IPC分类号： H01L27/146 , G01J1/44 , H01L31/107 , H04N25/70
CPC分类号： H01L27/1461 , G01J1/44 , H01L27/14634 , H01L31/107 , H04N25/70 , G01J2001/4466
摘要： An electronic device includes a stack of a first level having a SPAD, a second level having a quench circuit for said SPAD, and a third level having a circuit for processing data generated by said SPAD. A method for making the device includes: a) forming of the first level; b) bonding, on the first level, by molecular bonding, of a stack of layers including a semiconductor layer; and c) forming the quench circuit of the second level in the semiconductor layer.
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公开(公告)号：US20240045126A1
公开(公告)日：2024-02-08
申请号：US17881236
申请日：2022-08-04
CPC分类号： F21V5/007 , G02B5/3083 , F21V5/08 , F21V9/14 , G06V40/161
摘要： The present disclosure is directed to a device configured to act as a flood illuminator and a dot projector. The device utilizes a dual channel light source configured to switch between first and second polarizations, and a polarization sensitive metaoptic that outputs dot projection and flood illumination in response to receiving the first polarization and the second polarization, respectively.
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公开(公告)号：US11885915B2
公开(公告)日：2024-01-30
申请号：US16834347
申请日：2020-03-30
发明人： Neale Dutton , John Kevin Moore
IPC分类号： G01S7/4865 , G01S17/10 , G01S17/89
CPC分类号： G01S7/4865 , G01S17/10 , G01S17/89
摘要： In an embodiment, a method includes: receiving a first plurality of digital codes from a time-to-digital converter (TDC); TDC; generating a coarse histogram from the first plurality of digital codes; detecting a peak coarse bin from the plurality of coarse bins; after receiving the first plurality of digital codes, receiving a second plurality of digital codes from the TDC; and generating a fine histogram from the second plurality of digital codes based on the detected peak coarse bin, where a fine histogram depth range is narrower than a coarse histogram depth range, where a lowest fine histogram depth is lower or equal to a lowest coarse peak depth, and where a highest fine histogram depth is higher or equal to a highest coarse peak depth.
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公开(公告)号：US20240014341A1
公开(公告)日：2024-01-11
申请号：US18220069
申请日：2023-07-10
IPC分类号： H01L31/107 , H01L27/146 , H01L31/02 , H01L31/0352
CPC分类号： H01L31/107 , H01L27/14643 , H01L31/02027 , H01L27/1463 , H01L31/035281
摘要： A device includes a single photon avalanche diode in a portion of a substrate, wherein the portion has an octagonal profile. The octagonal profile is delimited by a wall forming an octagonal contour around the portion. The device further includes an array of diodes, wherein each diode is located in a corner between four adjacent single photon avalanche diodes. Each single photon avalanche diode further includes a doped anode region. A shallow trench isolation is formed in each doped anode region. A polysilicon line forming a resistor is supported at the upper surface of the shallow trench isolation.
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公开(公告)号：US20230411928A1
公开(公告)日：2023-12-21
申请号：US17840949
申请日：2022-06-15
IPC分类号： H01S5/068
CPC分类号： H01S5/06808 , H01S5/0683
摘要： An optical element is positioned in a holder over a laser light source. The optical element includes an electrical trace that is coupled between first and second pads. A sensing circuit that is also coupled to the first and second pads performs a voltage/current sensing operation to detect displacement of the optical element and control enablement of the laser light source.
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