公开(公告)号：US20190190227A1

公开(公告)日：2019-06-20

申请号：US16167556

申请日：2018-10-23

Applicant: Keyence Corporation

Inventor： Masao Sato ,  Yu Takabatake ,  Hideki Yamakawa

IPC: H01S3/11 ,  G02B26/10 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/04 ,  H01S3/00 ,  H01S3/06 ,  H01S3/16 ,  H01S3/042 ,  H01S3/08 ,  H01S3/091 ,  B23K26/082 ,  B23K26/36

CPC classification number: H01S3/11 ,  B23K26/082 ,  B23K26/36 ,  G02B26/101 ,  H01S3/0071 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/061 ,  H01S3/08013 ,  H01S3/0912 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1673

Abstract: To prevent an output decrease of laser light due to impurities formed in a Q switch. A laser machining device includes a Q-switch housing section configured by housing a Q switch and a first mirror and a wavelength converting section including a housing in which a transmission window section capable of transmitting a fundamental wave is formed, the wavelength converting section being configured by airtightly housing, with an internal space surrounded by the housing, at least a first wavelength conversion element, a second wavelength conversion element, and a second mirror. A resonator forming a resonant optical path passing through the transmission window section is configured by the first mirror in the Q-switch housing section and the second mirror in the wavelength converting section.

公开(公告)号：US09608397B2

公开(公告)日：2017-03-28

申请号：US14791493

申请日：2015-07-06

Applicant: Keyence Corporation

Inventor： Masao Sato

IPC: H01S3/094 ,  H01S3/067 ,  H01S5/40 ,  B23K26/04 ,  H01S3/0941 ,  H01S3/117 ,  H01S3/23 ,  H01S5/14 ,  B23K26/00 ,  B23K26/06 ,  B23K26/082 ,  B23K26/352 ,  B23K26/70 ,  B23K26/0622 ,  H01S3/00 ,  H01S3/16 ,  H01S3/10 ,  H01S5/00 ,  H01S5/06

CPC classification number: H01S3/094053 ,  B23K26/048 ,  B23K26/0608 ,  B23K26/0613 ,  B23K26/0624 ,  B23K26/082 ,  B23K26/352 ,  B23K26/706 ,  H01S3/0071 ,  H01S3/0085 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/10061 ,  H01S3/117 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1673 ,  H01S3/2308 ,  H01S5/0071 ,  H01S5/0617 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4018 ,  H01S5/4025 ,  H01S5/4062

Abstract: Provided is a laser processing device capable of performing high-power laser processing while preventing reduction of life duration of a light source for excitation light. By collecting the light emitted from single emitters of a plurality of single emitter LDs onto one end face of an optical fiber cable, high-power excitation light is transmitted to a marking head through the optical fiber cable. Excitation light emitted from the other end face of the optical fiber cable is separated into first excitation light and second excitation light. The first excitation light excites a first laser medium to generate laser light. The generated laser light enters a second laser medium. The second excitation light enters the second laser medium. With this, the second laser medium is excited, and the laser light that has entered the second laser medium from the first laser medium is amplified.

公开(公告)号：US11050212B2

公开(公告)日：2021-06-29

申请号：US16167556

申请日：2018-10-23

Applicant: Keyence Corporation

Inventor： Masao Sato ,  Yu Takabatake ,  Hideki Yamakawa

IPC: H01S3/11 ,  B23K26/36 ,  B23K26/082 ,  G02B26/10 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/04 ,  H01S3/00 ,  H01S3/16 ,  H01S3/042 ,  H01S3/08 ,  H01S3/091 ,  H01S3/06 ,  B23K26/352 ,  H01S3/02 ,  B23K26/042 ,  B23K26/064 ,  B23K26/06 ,  B23K26/03 ,  H01S3/102 ,  B23K26/0622 ,  B23K26/38 ,  B23K26/046 ,  H01S3/10 ,  H01S3/081 ,  H01S3/23

Abstract: To prevent an output decrease of laser light due to impurities formed in a Q switch. A laser machining device includes a Q-switch housing section configured by housing a Q switch and a first mirror and a wavelength converting section including a housing in which a transmission window section capable of transmitting a fundamental wave is formed, the wavelength converting section being configured by airtightly housing, with an internal space surrounded by the housing, at least a first wavelength conversion element, a second wavelength conversion element, and a second mirror. A resonator forming a resonant optical path passing through the transmission window section is configured by the first mirror in the Q-switch housing section and the second mirror in the wavelength converting section.

公开(公告)号：US20190190228A1

公开(公告)日：2019-06-20

申请号：US16167557

申请日：2018-10-23

Applicant: Keyence Corporation

Inventor： Masao Sato ,  Tatsuaki Nagai

IPC: H01S3/11 ,  G02B26/10 ,  H01S3/042 ,  H01S3/08 ,  H01S3/091 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/04 ,  H01S3/00 ,  H01S3/06 ,  H01S3/16 ,  B23K26/082 ,  B23K26/36

CPC classification number: H01S3/11 ,  B23K26/082 ,  B23K26/36 ,  G02B26/101 ,  H01S3/0071 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/061 ,  H01S3/08013 ,  H01S3/0912 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/1611 ,  H01S3/1673

Abstract: To appropriately change an output of laser light without deteriorating laser characteristics. A control section of a laser machining device controls, when a target output is larger than a predetermined threshold, an output of laser light by changing a driving current supplied to an excitation light source and, on the other hand, controls, when the target output is equal to or smaller than the threshold, the output of the laser light by changing a duty ratio of a Q switch while keeping the driving current supplied to the excitation light source substantially fixed.

公开(公告)号：US11005228B2

公开(公告)日：2021-05-11

申请号：US16167557

申请日：2018-10-23

Applicant: Keyence Corporation

Inventor： Masao Sato ,  Tatsuaki Nagai

IPC: H01S3/11 ,  G02B26/10 ,  H01S3/042 ,  H01S3/08 ,  H01S3/091 ,  H01S3/0941 ,  B23K26/36 ,  H01S3/04 ,  H01S3/00 ,  H01S3/06 ,  H01S3/16 ,  B23K26/082 ,  H01S3/109 ,  H01S3/02 ,  H01S3/081 ,  H01S3/10 ,  H01S3/102

Abstract: To appropriately change an output of laser light without deteriorating laser characteristics. A control section of a laser machining device controls, when a target output is larger than a predetermined threshold, an output of laser light by changing a driving current supplied to an excitation light source and, on the other hand, controls, when the target output is equal to or smaller than the threshold, the output of the laser light by changing a duty ratio of a Q switch while keeping the driving current supplied to the excitation light source substantially fixed.

公开(公告)号：US20160036194A1

公开(公告)日：2016-02-04

申请号：US14791493

申请日：2015-07-06

Applicant: Keyence Corporation

Inventor： Masao Sato

IPC: H01S3/094 ,  H01S3/117 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/067 ,  H01S3/00 ,  H01S5/40

CPC classification number: H01S3/094053 ,  B23K26/048 ,  B23K26/0608 ,  B23K26/0613 ,  B23K26/0624 ,  B23K26/082 ,  B23K26/352 ,  B23K26/706 ,  H01S3/0071 ,  H01S3/0085 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/10061 ,  H01S3/117 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/1673 ,  H01S3/2308 ,  H01S5/0071 ,  H01S5/0617 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4018 ,  H01S5/4025 ,  H01S5/4062

Abstract: Provided is a laser processing device capable of performing high-power laser processing while preventing reduction of life duration of a light source for excitation light. By collecting the light emitted from single emitters of a plurality of single emitter LDs onto one end face of an optical fiber cable, high-power excitation light is transmitted to a marking head through the optical fiber cable. Excitation light emitted from the other end face of the optical fiber cable is separated into first excitation light and second excitation light. The first excitation light excites a first laser medium to generate laser light. The generated laser light enters a second laser medium. The second excitation light enters the second laser medium. With this, the second laser medium is excited, and the laser light that has entered the second laser medium from the first laser medium is amplified.

Abstract translation: 提供一种能够进行大功率激光加工同时防止激发光源的寿命缩短的激光加工装置。 通过将从多个单个发射极LD的单个发射极发射的光聚集到光纤电缆的一个端面上，高功率激发光通过光纤电缆传输到标记头。 从光缆的另一端射出的激发光分离为第一激发光和第二激发光。 第一激发光激发第一激光介质产生激光。 产生的激光进入第二激光介质。 第二激发光进入第二激光介质。 由此，第二激光介质被激发，并且从第一激光介质进入第二激光介质的激光被放大。