公开(公告)号：US20180017917A1

公开(公告)日：2018-01-18

申请号：US15641531

申请日：2017-07-05

Applicant: Konica Minolta, Inc.

Inventor： Masahiko TAKAHASHI ,  Makoto OOKI ,  Wataru SENOO ,  Atsushi NAGAOKA ,  Hidenari TACHIBE ,  Hajime TANIGUCHI ,  Takafumi YUASA ,  Yoshitaka OTANI

IPC: G03G15/00 ,  G01D5/34 ,  H04N1/00

CPC classification number: G03G15/5029 ,  G01D5/34 ,  G03G15/6564 ,  H04N1/00721 ,  H04N1/00734 ,  H04N1/0075 ,  H04N2201/0094

Abstract: In a displacement sensor, an illumination optical system, which converts laser light emitted from an emission unit into first converging light, and irradiates with the first converging light a detection space through which a target moves. An imaging optical system converts laser light reflected from the target into second converging light, and irradiates with the second converging light a light-receiving surface of a detection unit. The image of the emission unit into which the illumination optical system focuses the first converging light is displaced along the optical axis of the imaging optical system by a temperature change of the illumination optical system. The range in which the image is displaced is limited to be located either anterior to the front principal point of the imaging optical system, or posterior to the rear principal point of the imaging optical system.

公开(公告)号：US20200241440A1

公开(公告)日：2020-07-30

申请号：US16735772

申请日：2020-01-07

Applicant: Konica Minolta, Inc.

Inventor： Ryo HASEGAWA ,  Takahiro MATSUO ,  Hajime TANIGUCHI ,  Atsushi NAGAOKA

IPC: G03G15/04 ,  G03G15/043

Abstract: An optical writing device includes: an image carrier; an exposer that exposes a curved surface of the image carrier; and a control circuit that controls the exposer, wherein the exposer includes a plurality of light-emitting element groups having different positional relationships from one another with the image carrier, and has a configuration that is adjusted in accordance with at least one of an angle at which light reaching the curved surface of the image carrier from each light-emitting element group enters the image carrier, and a distance of each light-emitting element group from the image carrier.

公开(公告)号：US20220000591A1

公开(公告)日：2022-01-06

申请号：US17358833

申请日：2021-06-25

Applicant: Konica Minolta, Inc.

Inventor： Masayuki IIJIMA ,  Takahiro MATSUO ,  Atsushi NAGAOKA

IPC: A61C9/00 ,  A61B1/24 ,  A61B5/00

Abstract: Provided is an intraoral measurement device including a plurality of optical measurement systems, each of which measures a form of an intraoral object to be measured, and a hardware processor. The plurality of optical measurement systems respectively measure forms of intraoral areas different from each other. The hardware processor calculates the form of the intraoral object to be measured based on information obtained from the plurality of optical measurement systems.

公开(公告)号：US20190310566A1

公开(公告)日：2019-10-10

申请号：US16298882

申请日：2019-03-11

Applicant: KONICA MINOLTA, INC.

Inventor： Takahiro MATSUO ,  Atsushi NAGAOKA ,  Masahiko TAKAHASHI

IPC: G03G15/04 ,  G03G15/043 ,  G02B27/30 ,  G03G15/00

Abstract: An optical writing device includes: a light source substrate in which a plurality of light sources and a driving circuit for driving the plurality of light sources are mounted on the same substrate surface; and an optical element that images outgoing light of the light sources on a photoreceptor, wherein the plurality of light sources are two-dimensionally disposed in plan view from an optical axis direction of the optical element, and the light sources having distances different from each other in the optical axis direction to the photoreceptor are included.

公开(公告)号：US20220104923A1

公开(公告)日：2022-04-07

申请号：US17494966

申请日：2021-10-06

Applicant: Konica Minolta, Inc.

Inventor： Yoshihiro INAGAKI ,  Atsushi NAGAOKA

IPC: A61C9/00 ,  G02B5/04

Abstract: Provided is an intraoral measurement device that enables high-accuracy profilometry with a simple device configuration using a prism.

公开(公告)号：US20210393136A1

公开(公告)日：2021-12-23

申请号：US17352826

申请日：2021-06-21

Applicant: Konica Minolta, Inc.

Inventor： Yoshihiro INAGAKI ,  Atsushi NAGAOKA

IPC: A61B5/00 ,  A61C19/04

Abstract: An intraoral measurement device includes a measurement optical system that includes: a laser light source; a time-of-flight (TOF) sensor; and a lens. The laser light source irradiates a measuring region including a measuring target with laser light that is intensity-modulated in synchronization with the TOF sensor. The lens condenses part of the light reflected by the measuring object onto the TOF sensor.