公开(公告)号：US20190285400A1

公开(公告)日：2019-09-19

申请号：US16248811

申请日：2019-01-16

Applicant: OMRON Corporation

Inventor： Jun TAKASHIMA ,  Tomonori KONDO

IPC: G01B11/14

Abstract: An error of a measured distance is reduced. An optical measurement device (100) includes: a light source (10), which emits lights; a sensor head (30), which condenses reflected lights reflected by a target (TA); a light reception portion (40), which is configured in a manner that each of a plurality of pixels is capable of detecting a light reception amount, and which obtains a light reception amount distribution signal of each pixel for the condensed reflected lights; a measurement portion (51), which measures a distance from the optical measurement device (100) to the target (TA) based on the light reception amount distribution signal; and a correction portion (52), which corrects the measured distance that is measured based on a predefined characteristic value in a waveform of the light reception amount distribution signal.

公开(公告)号：US20230288185A1

公开(公告)日：2023-09-14

申请号：US18173113

申请日：2023-02-23

Applicant: OMRON Corporation

Inventor： Yusuke NAGASAKI ,  Jun TAKASHIMA

IPC: G01B9/02056 ,  G01B9/02018 ,  G01B9/02

CPC classification number: G01B9/02057 ,  G01B9/02018 ,  G01B9/02084

Abstract: An optical interference range sensor includes: a light source configured to project a light beam while continuously varying a wavelength thereof using a predetermined sweep frequency pattern; a processing unit configured to measure the distance to a measurement target based on an electrical signal converted by a light-receiving unit; and a storage unit configured to store distance information indicating the measured distance. The predetermined sweep frequency pattern includes a first sweep frequency pattern and a second sweep frequency pattern. The processing unit includes an average distance value calculation unit configured to calculate an average distance value based on the measured distance, first distance information indicating a distance based on a light beam projected using the first sweep frequency pattern, and second distance information indicating a distance based on a light beam projected using the second sweep frequency pattern, of past distance information regarding multiple measurements stored in the storage unit.

公开(公告)号：US20220075062A1

公开(公告)日：2022-03-10

申请号：US17285097

申请日：2019-10-21

Applicant: OMRON Corporation

Inventor： Jun TAKASHIMA ,  Yoshihiro KANETANI

IPC: G01S17/08

Abstract: An optical measurement device is provided with: a light source for emitting light towards a target; a light-receiving unit that is configured so that each of a plurality of pixels is able to detect a received light amount, and that obtains a received light amount distribution signal of each of the pixels; an acquisition unit for acquiring a measured waveform signal from received light amount distribution signals for reflected light that is reflected by the target on the basis of received light amount distribution signals for when no target is present; and an adjustment unit for adjusting a sensitivity parameter with respect to the received light amount distribution signals of the reflected light so that the measured waveform signal is acquired when some of the received light amounts of the received light amount distribution signals of the reflected light are a predetermined value or higher.

公开(公告)号：US20220011092A1

公开(公告)日：2022-01-13

申请号：US17294693

申请日：2019-11-21

Applicant: OMRON Corporation

Inventor： Hisayasu MORINO ,  Jun TAKASHIMA

IPC: G01B11/02 ,  G01J1/04

Abstract: Provided is a confocal sensor having a wider measuring range. A confocal sensor 1 comprises: a light source 10 that emits light at a plurality of wavelengths; a diffractive lens 130 that causes a chromatic aberration with respect to the light along an optical axis and focuses the light onto an object 200 without another intervening lens; a pinhole 120 through which reflected light passes, the reflected light being a portion of the light that was focused onto and reflected from the object 200 and focused by the diffractive lens 130; and a measuring unit 40 that measures the distance from the diffractive lens 130 to the object 200 on the basis of a wavelength of the reflected light. A distance L2 from the pinhole 120 to the diffractive lens 130 is variable.

公开(公告)号：US20190101375A1

公开(公告)日：2019-04-04

申请号：US16132499

申请日：2018-09-17

Applicant: OMRON Corporation

Inventor： Hisayasu MORINO ,  Jun TAKASHIMA ,  Takahiro OKUDA ,  Kenichi MATOBA ,  Hiroaki TAKIMASA

IPC: G01B11/02 ,  G01B11/255 ,  G01J3/02 ,  G01J3/10

Abstract: A confocal measurement device includes a light source that outputs white light, an optical coupler, a sensor head that applies light with a chromatic aberration caused therein to a measurement object, and a spectroscope that acquires reflected light which is reflected by the measurement object and measures a spectrum of the reflected light. The optical coupler is a filter type coupler or a spatial optical system type coupler that brings a first transmission waveform when light is transmitted from a first optical fiber cable to a second optical fiber cable and a second transmission waveform when light is transmitted from the second optical fiber cable to a third optical fiber cable close to each other.

公开(公告)号：US20170160130A1

公开(公告)日：2017-06-08

申请号：US15363286

申请日：2016-11-29

Applicant: OMRON Corporation

Inventor： Hisayasu MORINO ,  Jun TAKASHIMA ,  Kenichi MATOBA ,  Masayuki HAYAKAWA ,  Naoki FUJIWARA ,  Mariko MARUKAWA

IPC: G01J3/02 ,  G02B6/02 ,  G01B11/245 ,  G01J3/28 ,  G01J3/10

CPC classification number: G01J3/0218 ,  G01B11/0608 ,  G01B11/245 ,  G01B2210/50 ,  G01J3/10 ,  G01J3/2803 ,  G02B6/02042

Abstract: To improve light use efficiency and thereby achieve even higher sampling rates.An optical measurement device includes: a light source configured to emit illumination light including a plurality of wavelength components; an optical system configured to introduce an axial chromatic aberration into the illumination light from the light source and to receive reflection light reflecting from a measurement object where at least a portion of the measurement object lies along a line extending from the optical axis of the optical system; a spectrometer for separating the reflection light received at the optical system into wavelength components, and a detector including a plurality of light receiving elements arranged one-dimensionally to correspond to the dispersion direction of the spectrometer.