公开(公告)号：US20190282083A1

公开(公告)日：2019-09-19

申请号：US16289675

申请日：2019-03-01

Applicant: TOPCON CORPORATION

Inventor： Takefumi HAYASHI ,  Yoko TATARA ,  Shunichi MORISHIMA

IPC: A61B3/10 ,  A61B3/107 ,  A61B3/103 ,  A61B3/12

Abstract: An ophthalmologic apparatus includes an objective lens, a refractive power measurement optical system, an inspection optical system, and an optical path separating unit. The refractive power measurement optical system is configured to project light in a first wavelength range onto a subject's eye via the objective lens and to detect returning light from the subject's eye. The inspection optical system is configured to project light in a second wavelength range onto the subject's eye via the objective lens. The optical path separating unit that is arranged in an optical path of the refractive power measurement optical system and is configured to separate an optical path of the inspection optical system from the optical path of the refractive power measurement optical system by performing wavelength separation based on changeable wavelength separation characteristics.

公开(公告)号：US10408678B2

公开(公告)日：2019-09-10

申请号：US15569493

申请日：2016-04-20

Applicant: TOPCON CORPORATION

Inventor： Peng Zhao ,  Shugo Akiyama ,  Issei Hanya

IPC: A01C21/00 ,  G01J3/427 ,  G01B11/02 ,  A01M7/00 ,  A01G22/00

Abstract: To provide a plant sensor device capable of obtaining a parameter to determine a growth status other than a spectroscopy vegetation index without increasing its configuration. The plant sensor device includes a light emission part for emitting a measurement light to irradiate a target plant, a light receiving part for receiving a reflected light from the target plant, and a control section for controlling the light emission part and light receiving part. The control section determines a spectroscopy vegetation index of the target plant by obtaining a reflection rate of the target plant based on the measurement light and reflected light. The control section calculates a distance from the target plant to the light emission part in accordance with the measurement light and reflected light, and determines a plant height of the target plant based on the distance.

公开(公告)号：US10382747B2

公开(公告)日：2019-08-13

申请号：US15712288

申请日：2017-09-22

Applicant: Topcon Corporation

Inventor： Naoki Morikawa ,  Tadayuki Ito

IPC: H04N13/351 ,  G06T19/00 ,  H04N13/324 ,  H04N13/398

Abstract: An image processing apparatus is provided to display an image on a screen, the image facilitating visual ascertainment of relationships between each of a plurality of items of point cloud data and point cloud data arising from combining the plurality of items of point cloud data. The image processing apparatus includes a display controlling section configured to 3D display combination point cloud data combining a plurality of items of point cloud data obtained from a plurality of viewpoints and allow 3D display of one item out of the plurality of items of point cloud data obtained from the plurality of viewpoints.

公开(公告)号：US20190227171A1

公开(公告)日：2019-07-25

申请号：US16369670

申请日：2019-03-29

Applicant: TOPCON CORPORATION

Inventor： Hideki MORITA ,  Ken'ichiro YOSHINO

IPC: G01S17/10 ,  H05K1/02

Abstract: A circuit configured to emit pulsed light includes a voltage generating circuit, a light emitting element, a circuit wiring that connects the voltage generating circuit and the light emitting element, a charge capacitor with its end connected to the circuit wiring, and a switching element configured to be turned on or off to apply voltage to the light emitting element. The inductance component for the circuit wiring is derived based on a relationship of the pattern length, pattern width and pattern thickness of the circuit wiring. In this manner, an inductance value of not greater than 1.4 nH can be set and suitably used for achieving an attenuation of at or below 3 dB in a circuit emitting light at a pulse width of 2 ns or less.

公开(公告)号：US10353072B2

公开(公告)日：2019-07-16

申请号：US15187291

申请日：2016-06-20

Applicant: TOPCON CORPORATION

Inventor： You Sasaki ,  Tadayuki Ito

IPC: G01C3/08 ,  G01S17/89 ,  G01S7/497 ,  G01S17/02 ,  G01S17/42 ,  G01S7/486 ,  G01S7/491

Abstract: Detection of sunlight as noise is avoided in obtaining point clouds by using a laser scanner. A laser scanner controlling device includes a sun direction calculating unit 115, a brightness measuring unit 116, and a scan condition setting unit 118. The sun direction calculating unit 115 calculates the direction of the sun. The brightness measuring unit 116 measures the brightness of an image that contains the direction of the sun. The scan condition setting unit 118 sets a condition for restricting laser scanning in the direction of the sun when the brightness is not less than a predetermined threshold value.

公开(公告)号：US10345232B2

公开(公告)日：2019-07-09

申请号：US16065971

申请日：2016-12-21

Applicant: TOPCON CORPORATION

Inventor： Kaoru Kumagai ,  Shugo Akiyama ,  Issei Hanya ,  Peng Zhao ,  Masashi Funahashi ,  Yoshimitsu Nakajima ,  Yuji Shirane

IPC: G01N21/35 ,  G01N33/38 ,  G01N21/27 ,  G01N21/359

Abstract: A method of measuring a state of concrete includes emitting an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receiving a reflection light of the irradiation light P reflected on the concrete. At least five wavelengths λ1 to λ5, λ6 to λ10, different from each other by PLS regression analysis within a wavelength range of 900 nm to 2500 nm of absorption spectrum, are determined, and a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion is estimated.

公开(公告)号：US10337863B2

公开(公告)日：2019-07-02

申请号：US15913002

申请日：2018-03-06

Applicant: TOPCON CORPORATION

Inventor： Kaoru Kumagai ,  Nobuyuki Nishita ,  Takeshi Sasaki

IPC: G01C11/04 ,  G06T7/70 ,  G01C15/00 ,  G01C11/02 ,  G06T7/246 ,  G06T7/285 ,  B64D47/08 ,  B64C39/02

Abstract: A survey system includes a camera provided on a UAV and taking a plurality of images for photogrammetry. A surveying portion tracking the camera and continuously determining a position of the camera and a relative photographing position calculation portion calculates a relative photographing position of each image based on the plurality of images taken by the camera, and a traveling path calculation portion calculates a traveling path of the UAV from a survey result obtained by the surveying portion. A photogrammetry analysis portion associating a point group of the relative photographing positions calculated by the relative photographing position calculation portion with a flight path calculated by the flight path calculation portion, and generating data for photogrammetry.

公开(公告)号：US10323940B2

公开(公告)日：2019-06-18

申请号：US15296317

申请日：2016-10-18

Applicant: TOPCON Corporation

Inventor： Masaki Kamiki ,  Goro Iwasaki ,  Shinji Yamaguchi ,  Satoshi Yanobe ,  Eiji Takeuchi ,  Yosuke Okudaira

IPC: G01C9/20 ,  G01C9/06

Abstract: The invention provides a tilt angle measuring device, which comprises a discoid container for including a liquid forming a free liquid surface, a light emitting source for allowing a detection light to enter the free liquid surface, a photodetector for receiving the detection light reflected on the free liquid surface and a signal processing unit for detecting a tilt of the free liquid surface based on a detection signal from the photodetector, wherein the signal processing unit sets a detection light storage time of the photodetector so that an error incidence rate of the detection signal is a predetermined value.

公开(公告)号：US10310059B2

公开(公告)日：2019-06-04

申请号：US15471271

申请日：2017-03-28

Applicant: TOPCON Corporation

Inventor： Noriyasu Kiryuu ,  Taizo Eno

IPC: G01S7/48 ,  G01S7/484 ,  G01B11/26 ,  G01S7/481 ,  G01S7/486 ,  G01S17/10 ,  G01C15/00 ,  G01S17/42

Abstract: The invention provides a laser scanner, which comprises a light source unit, a light receiving unit, a distance measuring unit, an angle measuring unit, a telescope unit capable of rotating in a horizontal direction and a vertical direction, a rotation driving unit, a directional angle detector, and a control arithmetic unit, wherein the light source unit is an MOPA type and has an oscillator control circuit, a main oscillator, and an optical amplifier, wherein the oscillator control circuit has a repetition frequency setting component, a pulse peak output setting component, a pulse width setting component and an amplification factor calculating component and oscillates the main oscillator corresponding to a measured distance, and wherein the amplification factor calculating component calculates an amplification factor based on a repetition frequency, a pulse peak output, and a pulse width and amplifies the optical amplifier based on a calculated amplification factor.

公开(公告)号：US10307058B2

公开(公告)日：2019-06-04

申请号：US15289291

申请日：2016-10-10

Applicant: TOPCON CORPORATION

Inventor： Tomohiro Sakurada

IPC: A61B3/14 ,  A61B3/15 ,  A61B3/00 ,  A61B3/103 ,  A61B3/117

Abstract: According to one embodiment, an ophthalmologic apparatus includes an optical system, a support, a drive unit, an alignment optical system, two or more imaging units, an analyzer, and a controller. The optical system acquires data of an eye. The support is configured to support the face of a subject. The drive unit moves the optical system and the support relative to each other. The alignment optical system projects an indicator for performing alignment of the optical system with respect to the eye onto the anterior segment of the eye. The imaging units photograph the anterior segment of the eye, onto which the indicator is being projected, substantially simultaneously from different directions. The analyzer analyzes two or more photography images captured substantially simultaneously by the imaging units to specify the position of the eye. The controller controls the drive unit based on the position specified by the analyzer.