公开(公告)号：US20200318948A1

公开(公告)日：2020-10-08

申请号：US16825233

申请日：2020-03-20

Applicant: Mitutoyo Corporation

Inventor： Ryoichi IMAIZUMI ,  Ichiro TANIGUCHI

IPC: G01B11/08 ,  G01B11/24

Abstract: An optical measuring device includes: an emission device configured to emit a scanning light, of which an optical axis parallely moves, to an object; a light receiving element configured to perform photoelectric conversion with respect to the scanning light after passing over the object; a calculation device configured to calculate, from a voltage wave obtained from time change of an electrical signal that is output by the light receiving element, a distance corresponding to a time range from a first edge with respect to a voltage value where the scanning light is not interrupted by the object and a second edge with respect to a voltage value where the scanning light is interrupted by the object, when a part of the scanning light is interrupted by the object for the time range.

公开(公告)号：US20180299257A1

公开(公告)日：2018-10-18

申请号：US15937119

申请日：2018-03-27

Applicant: MITUTOYO CORPORATION

Inventor： Ryoichi IMAIZUMI ,  Ichirou TANIGUCHI

IPC: G01B11/08 ,  G02B26/12 ,  H05K7/20 ,  H05K5/03

CPC classification number: G01B11/08 ,  G01B5/0014 ,  G01B11/2433 ,  G02B26/12 ,  G02B26/121 ,  G02B26/125 ,  H02K9/22 ,  H05K5/03 ,  H05K7/20436

Abstract: An optical outer diameter measurement apparatus includes a rotary device driven to rotate by a motor to convert light emitted from a light-emitting element into scanning light, a collimator lens configured to convert the scanning light into parallel scanning light that is projected toward an object to be measured, a condenser lens configured to condense the parallel scanning light having passed by the object to be measured, a light-receiving element configured to receive light condensed by the condenser lens, a housing that accommodates the rotary device and the collimator lens, and an optical-path cover including, in the housing, two walls extending in a scanning direction of the scanning light and located opposite each other with the scanning light between the two walls.

公开(公告)号：US20140340694A1

公开(公告)日：2014-11-20

申请号：US14277351

申请日：2014-05-14

Applicant: MITUTOYO CORPORATION

Inventor： Shinji FUKUDA ,  Ryoichi IMAIZUMI

IPC: G01B11/08

CPC classification number: G01B11/08 ,  G01B11/2433

Abstract: An optical measuring apparatus includes a light emitter, a scanner, a polarizing plate, a photoreceiver, and a CPU. The light emitter emits a laser beam. The scanner uses the laser beam emitted from the light emitter and scans a measurement region where a work piece is placed. The polarizing plate allows passage for only a laser beam, among the laser beams fired by the scanner, directed orthogonally to an emission direction of the laser beam and an axis direction of the work piece. The photoreceiver receives the laser beam that has passed through the measurement region and the polarizing plate. The CPU calculates a dimension of the work piece from a pattern of light and dark in a scan direction, the pattern being obtained by the photoreceiver.

Abstract translation: 光学测量装置包括光发射器，扫描仪，偏振片，光接收器和CPU。 光发射器发射激光束。 扫描器使用从发光器发射的激光束并扫描放置工件的测量区域。 在由扫描仪发射的激光束中，偏振片仅允许通过激光束，该激光束与激光束的发射方向和工件的轴线方向垂直。 光接收器接收已经通过测量区域和偏振片的激光束。 CPU从扫描方向上的光和暗的图案计算工件的尺寸，该图案由光接收器获得。

公开(公告)号：US20170167854A1

公开(公告)日：2017-06-15

申请号：US15364644

申请日：2016-11-30

Applicant: MITUTOYO CORPORATION

Inventor： Ryoichi IMAIZUMI

IPC: G01B11/12

CPC classification number: G01B11/12 ,  G01B11/2433

Abstract: A transparent tube is placed in a parallel laser light beam emitted from a light projector and reaching a photoreciever, and a detection signal indicating an amount of light received corresponding to a width direction position of the parallel laser light beam is obtained from the photoreceiver. Peaks formed in the detection signal by beams reflected by an inner circumferential surface of the transparent tube and incident to the photoreceiver are detected; width direction positions of two intersection points where the peaks cross a predetermined threshold value are detected; the width direction positions of the light beam reflected by the inner circumferential surface of the transparent tube are calculated from an average value of the two intersection points; and an internal diameter of the transparent tube is measured from the width direction positions.

公开(公告)号：US20150276390A1

公开(公告)日：2015-10-01

申请号：US14668171

申请日：2015-03-25

Applicant: MITUTOYO CORPORATION

Inventor： Ryoichi IMAIZUMI ,  Ichiro TANIGUCHI

IPC: G01B11/25 ,  G01B11/08

CPC classification number: G01B11/2504 ,  G01B11/08 ,  G01B11/2433 ,  G01B11/2518

Abstract: A correction device for an optical measuring apparatus obtains correction data for each scanning position of a light beam from an optical measuring apparatus that includes a light beam scanner which scans with a light beam a measuring region where a measured object is placed, and a light receiver which receives a transmitted light beam from the measuring region. The correction device includes a translucent scale having scale marks arranged at a predetermined pitch, and a support to mount the scale in the measuring region so that an arrangement direction of the scale marks is a scanning direction of the light beam.

Abstract translation: 用于光学测量装置的校正装置获得来自光学测量装置的光束的每个扫描位置的校正数据，所述光学测量装置包括：用光束扫描被测物体的测量区域的光束扫描器;以及光接收器 其接收来自测量区域的透射光束。 校正装置包括具有以预定间距排列的刻度标记的半透明刻度和用于将刻度尺安装在测量区域中的支架，使得刻度标记的布置方向为光束的扫描方向。