公开(公告)号：US11619769B2

公开(公告)日：2023-04-04

申请号：US17109569

申请日：2020-12-02

申请人： MITUTOYO CORPORATION

发明人： Tatsuya Nagahama ,  Yuko Shishido

IPC分类号： G02B3/14 ,  G02B13/22

摘要： An adapter optical system, which is an optical system configured to guide reflection light reflected by an object and passing through an imaging lens to a liquid resonant lens, includes: a first lens unit removably disposed at a position where the reflection light passing through the imaging lens enters and constituting an image-side telecentric optical system; and a second lens unit disposed at a position where the reflection light passing through the first lens unit enters and constituting a finite correction optical system in combination with the liquid resonant lens.

公开(公告)号：US11274916B2

公开(公告)日：2022-03-15

申请号：US16918482

申请日：2020-07-01

申请人： MITUTOYO CORPORATION

发明人： Masashi Ishige ,  Yuko Shishido

IPC分类号： G01B9/02 ,  G01B11/24 ,  G01B11/27 ,  G01B9/0209 ,  G02B21/00

摘要： A device including: a storage section that stores information for measuring a light path difference of two light paths relating to interference of a white light, from a color appearing due to the interference; and a calculation section that measures, from an image configured by a plurality of pixels each including information representing a color, the light path difference relating to each of the pixels, based on at least the information stored in the storage section.

公开(公告)号：US10663629B2

公开(公告)日：2020-05-26

申请号：US15854251

申请日：2017-12-26

申请人： MITUTOYO CORPORATION

发明人： Tatsuya Nagahama ,  Yuko Shishido ,  Yuki Kurahashi

IPC分类号： G02B3/14 ,  G02B7/28 ,  G02B7/08

摘要： A variable focal length lens apparatus includes a lens system where a refractive index changes in response to an input drive signal; a field lens arranged on the same optical axis as the lens system; an image detector detecting an image of a measured object through the lens system and the field lens; a pulse illuminator providing pulse illumination of the measured object based on an input light emission signal; a temperature sensor detecting temperature information for an interior of the lens system; and a controller outputting the drive signal and the light emission signal in addition to correcting the timing of the light emission signal based on the temperature information.

公开(公告)号：US20210003381A1

公开(公告)日：2021-01-07

申请号：US16918482

申请日：2020-07-01

申请人： MITUTOYO CORPORATION

发明人： Masashi Ishige ,  Yuko Shishido

IPC分类号： G01B9/02

摘要： A device including: a storage section that stores information for measuring a light path difference of two light paths relating to interference of a white light, from a color appearing due to the interference; and a calculation section that measures, from an image configured by a plurality of pixels each including information representing a color, the light path difference relating to each of the pixels, based on at least the information stored in the storage section.

公开(公告)号：US10830585B2

公开(公告)日：2020-11-10

申请号：US16519117

申请日：2019-07-23

申请人： MITUTOYO CORPORATION

发明人： Koji Kubo ,  Yuko Shishido

IPC分类号： G01C3/32 ,  G01C3/02 ,  G02B3/14 ,  H04N5/232 ,  G01S17/08 ,  H04N5/225 ,  G02B26/00

摘要： A non-contact type displacement sensor includes a light source that emits measurement light; a liquid lens apparatus in which a refractive index periodically changes in response to an input drive signal; an objective lens emitting, at a measurable object, the measurement light that is emitted from the light source and has passed through the liquid lens apparatus; a photodetector receiving the measurement light that is reflected by the measurable object and outputs a photodetection signal; and a signal processor (controller) that calculates focus timing with which the measurement light is in focus on a surface of the measurable object based on the photodetection signal output from the photodetector, and that obtains a position of the measurable object based on a phase of the focus timing with respect to a cycle of the drive signal.

公开(公告)号：US11307330B2

公开(公告)日：2022-04-19

申请号：US17148998

申请日：2021-01-14

申请人： MITUTOYO CORPORATION

发明人： Koji Kubo ,  Yuko Shishido

IPC分类号： G02B1/06 ,  G02B3/14 ,  G02B13/00

摘要： A variable focal length optical system includes: an imaging lens configured to condense a parallel beam of light from an objective lens to form an intermediate image; a relay system including, in sequence from an object side, a first relay lens and a second relay lens and configured to relay the intermediate image to infinity; and a lens system of a liquid resonant type which is located between the first relay lens and the second relay lens. A front principal point of the lens system is located to be conjugated with an exit pupil of the objective lens and an expression, 1.90≤fTube/fR1≤2.15, is satisfied. In the expression, fTube denotes a focal length of the imaging lens and fR1 denote a focal length of the first relay lens.

公开(公告)号：US11193757B2

公开(公告)日：2021-12-07

申请号：US16717320

申请日：2019-12-17

申请人： MITUTOYO CORPORATION

发明人： Satoru Yoshida ,  Tatsuya Nagahama ,  Masafumi Yamanaka ,  Hitoshi Isobe ,  Naoto Oita ,  Koji Kubo ,  Yuko Shishido ,  Nobuo Ohba ,  Takahisa Ootake ,  Hiroki Matsui ,  Masanori Arai ,  Shiro Igasaki ,  Yuki Kurahashi ,  Hiroshi Sakai ,  Yutaka Watanabe

IPC分类号： G01B11/24 ,  H04N5/225 ,  G02B21/36

摘要： An image measurement apparatus, which functions as a non-contact profile-measuring device, includes: an image sensor as an image pick-up device; a variable focal length lens (liquid lens unit) disposed on an optical axis extending from a workpiece to the image sensor; and a controller (image-pickup lens controller and image measurement processor) configured to control the variable focal length lens and process a detected image by the image sensor. The image measurement apparatus, which also functions as a non-contact displacement-detecting device, includes: an image sensor; a variable focal length lens (liquid lens unit) disposed on an optical axis extending from the workpiece to the image sensor; and a controller (displacement-detection lens controller and profile measurement processor) configured to control the variable focal length lens and a detected image by the image sensor.

公开(公告)号：US20210173128A1

公开(公告)日：2021-06-10

申请号：US17109569

申请日：2020-12-02

申请人： MITUTOYO CORPORATION

发明人： Tatsuya Nagahama ,  Yuko Shishido

IPC分类号： G02B3/14 ,  G02B13/22

摘要： An adapter optical system, which is an optical system configured to guide reflection light reflected by an object and passing through an imaging lens to a liquid resonant lens, includes: a first lens unit removably disposed at a position where the reflection light passing through the imaging lens enters and constituting an image-side telecentric optical system; and a second lens unit disposed at a position where the reflection light passing through the first lens unit enters and constituting a finite correction optical system in combination with the liquid resonant lens.

公开(公告)号：US11237354B2

公开(公告)日：2022-02-01

申请号：US16161835

申请日：2018-10-16

申请人： MITUTOYO CORPORATION

发明人： Tatsuya Nagahama ,  Koji Kubo ,  Yuko Shishido ,  Masaki Okayasu ,  Atsushi Usami

IPC分类号： G02B7/10 ,  G02B3/14 ,  G02F1/29 ,  G02B13/22 ,  G02B9/04 ,  H04N5/225

摘要： A variable focal length lens apparatus includes an objective lens and an imaging lens that are aligned on the same optical axis; a front side lens system and a rear side lens system that are disposed in a section between the objective lens and the imaging lens on the optical axis, and change a refractive index in accordance with an input drive signal; and a diaphragm disposed in the section between the front side lens system and the rear side lens system on the optical axis.

公开(公告)号：US09733464B2

公开(公告)日：2017-08-15

申请号：US14718349

申请日：2015-05-21

申请人： MITUTOYO CORPORATION

发明人： Eisuke Moriuchi ,  Tatsuya Nagahama ,  Yuko Shishido

IPC分类号： G02B7/38 ,  G02B21/24 ,  G02B7/34

CPC分类号： G02B21/244 ,  G02B7/34 ,  G02B7/38 ,  G02B21/245

摘要： A focus detection unit to adjust a focal point of an image, of an object, formed by an optical system includes a first output section, a second output section, and a projection optical system. The first output section includes a first light modulation element configured to generate a first pattern image based on incident light and is configured to output the generated first pattern image. The second output section includes a second light modulation element configured to generate a second pattern image based on incident light and is configured to output the generated second pattern image. The projection optical system is configured to project the output first pattern image and the output second pattern image such that the output first pattern image and the output second pattern image have a predetermined positional relationship at an in-focus position of the optical system.