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公开(公告)号：EP4279958A1
公开(公告)日：2023-11-22
申请号：EP22305725.8
申请日：2022-05-17
发明人： DUTTON, Neale , STECKEL, Jonathan
IPC分类号： G01S17/89 , H04M1/00 , G01S7/486 , H01L31/0352
摘要： The present disclosure relates to a time-of-flight sensor, ToF (100) comprising, on a same base substrate (122), a light emitter (108) emitting light (118) into an image scene (50), a reference sensor (106) detecting light emitted by the light emitter (108), and a signal reception sensor (104) array separated from the light emitter (108) by an optical barrier (126), the optical barrier (126) preventing light emitted by the light emitter (108) from directly reaching the signal reception sensor (104) array, the signal reception sensor (104) array detecting light (124) reflected by the image scene (50), wherein the reference sensor (106) and the signal reception sensor (104) array are based on semiconductor nanoparticles. The optical barrier (126) is arranged between the upper surface (114) of the base substrate (122) and an inner surface of a packaging unit (102). The base substrate (122) may also comprise a control circuit (112). Alternatively, a device substrate comprises the control circuit (112). The semiconductor nanoparticles can be quantum dots, quantum wires, quantum rods, or quantum wells. The light emitter (108), which may be a vertical-cavity surface-emitting layer, VCSEL, may also be based on semiconductor nanoparticles. The semiconductor nanoparticle layer or layers of the reference sensor (106), of the signal reception sensor (104), and of the emitter (108) are for example formed of InAs or InSb or InAs x P x or InAs x Sb x . The device (100) is for example implemented under a touch display screen of a mobile communication device.
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公开(公告)号：EP4390459A1
公开(公告)日：2024-06-26
申请号：EP22306982.4
申请日：2022-12-21
发明人： DUTTON, Neale , MELLOT, Pascal , HRISTOVA, Ivelina
IPC分类号： G01S17/10 , G01S17/894 , G01S7/4863 , G01S7/4865 , G01S7/487 , G04F10/00
CPC分类号： G01S17/10 , G01S17/894 , G01S7/4863 , G01S7/4865 , G01S7/487 , G04F10/005
摘要： The present disclosure relates to an optoelectronic device comprising: a light source configured to emit light pulses periodically; an array of pixels each configured to detect an amount of return light falling in each of a subset of two or more time intervals forming a detection time window of the pixel; and a time window position code generator (575) configured to generate a sequence of time window position codes; each pixel comprising: a memory (601) configured to store a first reference time window position; a time window code comparator (580A) configured to compare a first time window position code of said sequence with the first reference time window position; and a timing sequence generator (580B, 580C) configured to generate, when the comparison indicates a match, at least one time window control signal (g0, g1, g2, g3).
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公开(公告)号：EP3816662A1
公开(公告)日：2021-05-05
申请号：EP19306416.9
申请日：2019-10-31
发明人： HRISTOVA, Ivelina , MELLOT, Pascal , DUTTON, Neale
IPC分类号： G01S7/4863 , G01S7/4865 , G01S7/497 , G01S17/894
摘要： The present disclosure relates to a depth map sensor comprising: a first array (102) of first pixels, each first pixel comprising at least one first photodetector associated with a pixel circuit comprising a plurality of first bins for accumulating events; a clock source (504) configured to generate a plurality of phase-shifted clock signals; and a first circuit having a plurality of first output lines coupled to the first array of first pixels, the first circuit receiving the plurality of phase-shifted clock signals, wherein: the first circuit comprises a first block (506-1), which propagates the plurality of phase-shifted clock signals to a second block (508-1) during a first period determined by a first enable signal (RTN_ENABLE_OUTPUT); and the second block is configured to select to which of the plurality of first output lines each of the plurality of phase-shifted clock signals is applied.
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公开(公告)号：EP4020006A1
公开(公告)日：2022-06-29
申请号：EP20306680.8
申请日：2020-12-23
发明人： MOORE, John Kevin , DUTTON, Neale , MELLOT, Pascal
IPC分类号： G01S7/481 , G01S7/4863 , G01S17/894 , G01S17/89 , H01L27/146
摘要： The present disclosure relates to an indirect time of flight sensor comprising: a matrix (200) of pixels (1) each comprising at least two controllable transfer devices (TGmeml; TGmem2); first conductive lines (204) transmitting first control signals to the transfer devices (TGmeml; TGmem2); a first circuit (CTRL1) providing the first signals; and a device (205) for illuminating a scene to capture, wherein: the scene is divided in first areas (S1, S2, S3, S4); the device (205) illuminates successively each first area; the matrix (200) is divided in second areas (M1, M2, M3, M4); the matrix (200) and of the illumination device (205) are disposed such that each first area (S1, S2, S3, S4) corresponds to one second area (M1, M2, M3, M4); and the first circuit (CTRL1) provides different first signals (TG1, TG2) to the different second areas (M1, M2, M3, M4).
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公开(公告)号：EP3683905A1
公开(公告)日：2020-07-22
申请号：EP19305053.1
申请日：2019-01-16
IPC分类号： H01S5/042
摘要： A laser diode driver circuit comprising: a first pair of contacts and connectors coupled to an anode of the laser diode, wherein an inductance of each of the first pair of contacts and connectors is the same; a second pair of contacts and connectors coupled to a cathode of the laser diode, wherein an inductance of each of the second pair of contacts and connectors is the same; current driving circuitry, wherein the current driving circuitry is configured to operate such that: in a first phase a first current passes through the first pair of contacts and connectors and a further current passes through the a second pair of contacts and connectors such that a potential difference between the cathode and anode is below a diode activation value; in a second phase, succeeding the first phase, the further current passes through a first of the first pair of contacts and connectors, the laser diode and a first of the second pair of contacts and connectors such that the potential difference between the cathode and anode is above the diode activation value; in a third phase, succeeding the second phase, a current passes through a first of the first pair of contacts and connectors, the laser diode and a first of the second pair of contacts and connectors and the potential difference between the cathode and anode is below the diode activation value.
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公开(公告)号：EP3316497B1
公开(公告)日：2019-10-16
申请号：EP16195849.1
申请日：2016-10-26
IPC分类号： H04B10/114 , H04B10/116
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公开(公告)号：EP3367131A1
公开(公告)日：2018-08-29
申请号：EP17158194.5
申请日：2017-02-27
发明人： MOORE, John Kevin , DUTTON, Neale , RAYNOR, Jeff
CPC分类号： G01S17/102 , G01C3/08 , G01S7/4865 , G01S17/36 , G01S17/89
摘要： A method for determining a distance from an apparatus to at least one object comprising: generating a first signal; generating light modulated by the first signal from the apparatus; detecting light reflected by the at least one object using a Time-of-flight detector array, by determining by each array element of the Time-of-flight detector array an output signal generated from a series of photon counts over a number of consecutive non-overlapping time periods; comparing the output signals to the first signal to determine at least one signal phase difference; and determining a distance from the apparatus to the at least one object based on the at least one signal phase difference.
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8.发明公开
公开(公告)号：EP4279960A1
公开(公告)日：2023-11-22
申请号：EP23171098.9
申请日：2023-05-02
发明人： DUTTON, Neale
IPC分类号： G01S17/894 , G01S7/481 , G01S7/484 , G01S7/4863 , G01S7/497 , G01S7/487
摘要： A time-of-flight system includes an emitter-circuit generating and directing pulses of light toward a target, and a receiver-circuit including a photodetector coupled between a bias node and a sensing node to detect pulses that have reflected off the target, a comparison circuit comparing a sense voltage at the sensing node to a reference, a timing measurement circuit measuring elapsed time between generation of a given pulse and detection thereof after reflection off the target, and a programmable current sink that sinks a current from the sensing node equal to a portion of a photocurrent generated by the photodetector due to detection of ambient light. A timing-generation circuit synchronizes generation of the pulses and measurement of elapsed time by the timing circuit. A processor adjusts a magnitude of the current sunk from the sensing node based upon output of the comparison circuit when the emitter circuit is deactivated.
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公开(公告)号：EP3889694A1
公开(公告)日：2021-10-06
申请号：EP21164823.3
申请日：2021-03-25
发明人： DUTTON, Neale , MOORE, John Kevin
IPC分类号： G04F10/00 , G01S7/4863 , G01S7/4865
摘要： A method of executing a ToF measurement includes: receiving a first plurality of digital codes from a 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 lower fine histogram depth is lower or equal to a lower coarse peak depth, and where a higher fine histogram depth is higher or equal to a higher coarse peak depth.
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10.发明公开TIME OF FLIGHT SENSING FOR BRIGHTNESS AND AUTOFOCUS CONTROL IN IMAGE PROJECTION DEVICES 审中-公开图像投影装置中用于亮度和自动聚焦控制的飞行时间
公开(公告)号：EP3301509A1
公开(公告)日：2018-04-04
申请号：EP17156585.6
申请日：2017-02-17
发明人： DUTTON, Neale , YANG, Xiaoyong , CHANNON, Kevin
CPC分类号： H04N9/3155 , G01S7/4865 , G01S17/10 , G03B21/142 , G03B21/2053 , G03B21/53 , H04N9/3102 , H04N9/3129 , H04N9/315 , H04N9/3161 , H04N9/317 , H04N9/3185 , H04N9/3194
摘要： An image projection device, such as a pico projector or LCD projector, includes image projection circuitry configured to generate a light beam having a power. The image projection circuitry projects the light beam onto and focuses the light beam on a projection surface located an imaging distance from the image projection circuitry. A time-of-flight sensor is configured to sense the imaging distance between the image projection circuitry and the projection surface and to generate an imaging distance signal indicating the sensed imaging distance. Control circuitry is coupled to the image projection circuitry and to the time-of-flight sensor and is configured to adjust the power and the focus of the light beam based upon the imaging distance signal.
摘要翻译： 诸如微型投影仪或LCD投影仪之类的图像投影设备包括图像投影电路，该图像投影电路被配置成生成具有功率的光束。 图像投影电路将光束投射到位于距图像投影电路成像距离的投影表面上并将光束聚焦在该投影表面上。 飞行时间传感器被配置为感测图像投影电路与投影表面之间的成像距离并且生成指示所感测的成像距离的成像距离信号。 控制电路被耦合到图像投影电路和飞行时间传感器，并且被配置为基于成像距离信号来调节光束的功率和焦点。
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