公开(公告)号：US20160072253A1

公开(公告)日：2016-03-10

申请号：US14663048

申请日：2015-03-19

Applicant: SHOWA OPTRONICS CO., LTD.

Inventor： Minoru KADOYA

IPC: H01S5/042 ,  H01S5/024 ,  H01S5/04

CPC classification number: H01S3/1022 ,  H01S3/0621 ,  H01S3/0912 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1024 ,  H01S3/109 ,  H01S3/1673 ,  H01S5/024 ,  H01S5/042 ,  H01S5/0427

Abstract: The switching power source circuit (11) for the solid-state laser (100) excited by a semiconductor laser (101) uses a higher switching frequency than the relaxation oscillation (fRO) of the solid-state laser so that the optical noises due to the switching noises or ripples in the output voltage of the switching power source circuit can be minimized. When the voltage drop caused by a semiconductor power device (Q2) is forwarded to a feedback terminal (11b) of the switching power source circuit, even when the forward voltage of the semiconductor laser should vary, the output voltage of the switching power source circuit can be regulated to a value suitable for the driving of the semiconductor laser, and the heat generation from the semiconductor power device can be minimized.

Abstract translation: 由半导体激光器（101）激发的固体激光器（100）的开关电源电路（11）使用比固态激光器的弛豫振荡（fRO）更高的开关频率，使得由于 可以使开关电源电路的输出电压中的开关噪声或波纹最小化。 当由半导体功率器件（Q2）引起的电压降被转发到开关电源电路的反馈端子（11b）时，即使当半导体激光器的正向电压变化时，开关电源电路的输出电压 可以将其调节到适合于半导体激光器的驱动的值，并且可以使来自半导体功率器件的发热最小化。

公开(公告)号：US20150070774A1

公开(公告)日：2015-03-12

申请号：US14191351

申请日：2014-02-26

Applicant: SHOWA OPTRONICS CO., LTD.

Inventor： Minoru Kadoya ,  Atsushi Masui

IPC: H01S5/00 ,  G02B26/00

CPC classification number: G02B26/002 ,  H01S3/08004 ,  H01S3/08059 ,  H01S3/105 ,  H01S5/0287 ,  H01S5/0653 ,  H01S5/141 ,  H01S5/32341

Abstract: A diode laser module includes a laser diode (1), an anamorphic prism pair (5) consisting of a pair of prisms (3, 4) having mutually different apex angles and/or made of material having mutually different refractive indices, and a partial reflective mirror (6; 16) disposed on a side of the anamorphic prism pair away from the laser diode and having a planar or spherical surface facing the anamorphic prism pair and coated with partial reflective coating (6a; 16a). The wavelength of the laser output can be changed by adjusting the position of the partial reflective mirror.

Abstract translation: 二极管激光器模块包括激光二极管（1），由具有相互不同的顶角的一对棱镜（3）和/或具有相互不同的折射率的材料制成的变形棱镜对（5），以及部分 反射镜（6; 16），其设置在远离激光二极管的一侧的变形棱镜对，并且具有面向变形棱镜对的平面或球形表面，并涂覆有部分反射涂层（6a; 16a）。 可以通过调整部分反射镜的位置来改变激光输出的波长。

公开(公告)号：US20140334506A1

公开(公告)日：2014-11-13

申请号：US14191333

申请日：2014-02-26

Applicant: Showa Optronics Co., Ltd.

Inventor： Minoru Kadoya

IPC: H01S3/13 ,  H01S3/00 ,  G02F1/29

CPC classification number: G02F1/29 ,  G02F1/0147 ,  G02F1/295 ,  G02F1/37 ,  G02F2201/58 ,  G02F2203/24 ,  H01S3/0071 ,  H01S3/0092 ,  H01S3/083 ,  H01S3/109 ,  H01S3/1306

Abstract: A light deflector for deflecting a propagation direction of laser includes: a first metallic piece and a second metallic piece spaced apart from each other; and a transparent medium and an electronic cooling element disposed between the first metallic piece and the second metallic piece such that each of the transparent medium and the electronic cooling element is in contact with the first metallic piece and the second metallic piece. The electronic cooling element creates a temperature difference between the first metallic piece and the second metallic piece to vary a refractive index of the transparent medium.

Abstract translation: 用于偏转激光传播方向的光偏转器包括：第一金属片和彼此间隔开的第二金属片; 以及设置在所述第一金属片和所述第二金属片之间的透明介质和电子冷却元件，使得所述透明介质和所述电子冷却元件中的每一个与所述第一金属片和所述第二金属片接触。 电子冷却元件在第一金属片和第二金属片之间产生温度差，以改变透明介质的折射率。

公开(公告)号：US20200319437A1

公开(公告)日：2020-10-08

申请号：US16838481

申请日：2020-04-02

Applicant: SHOWA OPTRONICS CO., LTD.

Inventor： Noboru Koizumi ,  Takao Tanabe ,  Masaya Ishii

IPC: G02B15/177 ,  G02B9/64 ,  G02B27/00 ,  G02B13/14

Abstract: A short-wavelength infrared imaging lens includes first and second lens groups arranged in order from an object side. The first lens group has a negative refractive power as a whole. The second lens group has a positive refractive power as a whole and includes at least one positive lens that satisfies following conditional expressions (1) and (2): V2p>40  (1) N2p>1.7  (2) Here, N2p is a refractive index N [1.53] of the positive lens at a wavelength of 1.53 μm, and the Abbe number V2p is an Abbe number of the positive lens in a short-wavelength infrared range and is defined as (N [1.53]−1)/(N [0.9]−N [2.325]) when refractive indexes of the at least one positive lens at wavelengths of 0.9 μm, 1.53 μm, and 2.325 μm are represented by N [0.9], N [1.53], and N [2.325], respectively.

公开(公告)号：US20200313384A1

公开(公告)日：2020-10-01

申请号：US16819272

申请日：2020-03-16

Applicant: SHOWA OPTRONICS CO., LTD.

Inventor： Minoru Kadoya

IPC: H01S3/13 ,  H01S5/0683 ,  H01S3/0941

Abstract: A laser system includes: a laser light source; a light detector configured to output an electric current proportional to an output laser light of the laser light source; a resistor network configured to convert the electric current output from the light detector to a monitor voltage; and a regulator configured to control an intensity of the output laser light based on a comparison between the monitor voltage and a voltage corresponding to a control target value, wherein the resistor network comprises at least two branch circuits connected in parallel with each other, and the branch circuits include respective digital potentiometer circuits commonly formed in a single device.

公开(公告)号：US20170229842A1

公开(公告)日：2017-08-10

申请号：US15426289

申请日：2017-02-07

Applicant: Showa Optronics Co., Ltd.

Inventor： Masami HATORI ,  Kenji OHARA ,  Takuya ARICHI

IPC: H01S5/042 ,  H01S5/14

CPC classification number: H01S5/0427 ,  H01S5/0287 ,  H01S5/0428 ,  H01S5/0653 ,  H01S5/0655 ,  H01S5/06832 ,  H01S5/141 ,  H01S5/32341

Abstract: A semiconductor laser device with external resonator with stable longitudinal mode regardless of variation of drive current is disclosed. The device includes: a semiconductor light-emitting element having a pair of end faces with a light emitting section disposed therebetween, and an external resonator configured to oscillate light emitted from the semiconductor light-emitting element, the external resonator being formed by a resonator mirror disposed outside the semiconductor light-emitting element and one of the pair of end faces that is farther from the resonator mirror, wherein, as the semiconductor light-emitting element, a semiconductor light-emitting element having a structure which does not oscillate light emitted therefrom by itself is used. The device further includes a wavelength control element disposed in the optical path within the external resonator and configured to select a wavelength range of the light, and a driver circuit configured to perform fast modulation drive of the semiconductor light-emitting element.

公开(公告)号：US20150116801A1

公开(公告)日：2015-04-30

申请号：US14191390

申请日：2014-02-26

Applicant: SHOWA OPTRONICS CO., LTD.

Inventor： Minoru Kadoya ,  Kenji Ohara

IPC: H01S5/00 ,  H01S5/024

CPC classification number: H01S5/02415 ,  H01S5/0683 ,  H01S5/06837 ,  H01S5/141 ,  H01S2301/163

Abstract: A single longitudinal mode diode laser module including a laser diode (1) and an external resonator using a volume holographic grating (3) having a prescribed reflective bandwidth is made amenable to automatic power control by controlling the temperature of the laser diode such that the laser power may be allowed to increase monotonically with an increase in the input current. Therefore, the output laser power can be controlled at a constant level by automatic power control or by adjusting the input current while monitoring the laser power at any desired level of the laser power.

Abstract translation: 使用具有规定的反射带宽的体积全息光栅（3）的包括激光二极管（1）和外部谐振器的单个纵模模式二极管激光器模块可以通过控制激光二极管的温度使得激光器 随着输入电流的增加，功率可以单调增加。 因此，可以通过自动功率控制或通过在任何期望的激光功率水平监视激光功率的同时调节输入电流来将输出激光功率控制在恒定水平。