公开(公告)号：US20210011139A1

公开(公告)日：2021-01-14

申请号：US16977968

申请日：2019-03-08

Applicant: OMRON Corporation

Inventor： Masanobu HORINO ,  Yuki MATSUI ,  Ken NAKAMURO ,  Sayuki NAKADA

IPC: G01S7/4865 ,  G01S7/481 ,  G01S17/10

Abstract: A light detection device detects incident light according to a detection start timing. The light detection device includes photosensors, a signal combining circuit, a detection circuit, a time measurement circuit, and a timing extraction circuit. The photosensors receive light to generate output signals indicating light reception results, respectively. The signal combining circuit sums output signals from the respective photosensors to generate a combined signal. The detection circuit detects a timing at which the combined signal reaches a first threshold or larger to generate a detection signal. The time measurement circuit measures a count period between the detection start timing and the detected timing based on the detection signal. The timing extraction circuit extracts timing information from a predetermined period defined by the detected timing as a reference, the timing information indicating a timing at which the combined signal increases.

公开(公告)号：US20200064451A1

公开(公告)日：2020-02-27

申请号：US16543664

申请日：2019-08-19

Applicant: OMRON Corporation ,  Politecnico di Milano

Inventor： Yuki MATSUI ,  Ken NAKAMURO ,  Franco ZAPPA ,  Federica VILLA ,  Rudi LUSSANA

IPC: G01S7/487

Abstract: A distance measuring device includes a light emission portion for emitting light; a light receiving portion for receiving measurement light that is emitted by the light emission portion and reflected by a measurement object, the light receiving portion comprising a plurality of pixels, each pixel having at least one light receiving portion and outputting a light reception signal that depends on the measurement light incident on the pixel; a discrimination portion for discriminating whether the pixel receives measurement light; a pixel output control portion for selectively outputting the light reception signal of each pixel individually, depending on the determination result of the discrimination portion; and an evaluation portion for receiving the light reception signals output by the pixel output control portion and outputting a distance signal that is indicative of a distance between the measuring device and the measurement object based on these light reception signals.

公开(公告)号：US20210011140A1

公开(公告)日：2021-01-14

申请号：US16979576

申请日：2019-03-08

Applicant: OMRON Corporation

Inventor： Masanobu HORINO ,  Yuki MATSUI ,  Ken NAKAMURO ,  Sayuki NAKADA

IPC: G01S7/4865 ,  G01S7/481 ,  G01S17/10

Abstract: A light detection device detects incident light according to a detection start timing. The light detection device includes a plurality of photosensors, a signal combining circuit, a detection circuit, and at least one time measurement circuit. The plurality of photosensors receive light to generate output signals indicating light reception results, respectively. The signal combining circuit sums a plurality of output signals from the respective photosensors to generate a combined signal. The detection circuit detects a timing, at which the combined signal is maximized after the detection start timing, to generate a detection signal indicating the detected timing. The time measurement circuit measures a count period between the detection start timing and the detected timing based on the detection signal.

公开(公告)号：US20200049822A1

公开(公告)日：2020-02-13

申请号：US16535126

申请日：2019-08-08

Applicant: OMRON Corporation ,  Politecnico di Milano

Inventor： Yuki MATSUI ,  Ken NAKAMURO ,  Franco ZAPPA ,  Federica VILLA ,  Rudi LUSSANA

IPC: G01S17/10 ,  G01S7/486 ,  H01L27/146

Abstract: A distance measuring device includes a light emission portion configured to emit light; a light receiving portion configured to receive measurement light that is emitted by the light emission portion and reflected by the measurement object, the light receiving portion comprising a plurality of pixels configured to output light reception signals that depend on the received measurement light; a plurality of determination portions configured to receive the light reception signals and to determine characteristic values from the received light reception signals, and an evaluation portion that is connected to the plurality of determination portions, the evaluation portion being configured to calculate a distance from the characteristic values determined by the determination portions. Each of the plurality of determination portions is configured to receive the light reception signals only from a plurality of non-adjacent pixels.

公开(公告)号：US20180267202A1

公开(公告)日：2018-09-20

申请号：US15842895

申请日：2017-12-15

Applicant: OMRON Corporation

Inventor： Mingke YU ,  Kuniharu SHIBATA ,  Motoharu OKUNO ,  Ryosuke TSUZUKI ,  Masanobu HORINO ,  Yuki MATSUI

IPC: G01V8/20 ,  G01J1/02 ,  H03K17/74

CPC classification number: G01V8/20 ,  G01J1/0214 ,  G01J1/0228 ,  G01J1/0238 ,  G01J1/4228 ,  G01V8/12 ,  H03K17/74

Abstract: A photoelectric sensor capable of preventing a malfunction caused by mutual interference is provided. The photoelectric sensor includes: a light projecting unit that repetitively emits a set of pulse light, which follows a projected light pattern in which a light projecting period is made different by a fixed time, as signal light; a light receiving element that receives the signal light; and a light receiving controller that distinguishes a light incident state and a light blocked state based on a received light signal from the light receiving element. The light projecting unit has a first pattern having the light projecting period increased by a fixed time and a second pattern having the light projecting period reduced by a fixed time as the projected light pattern, and in the first and second patterns, a pulse indicating a shortest period is included in the light projecting period other than the shortest period.