公开(公告)号：US07057783B2

公开(公告)日：2006-06-06

申请号：US11117357

申请日：2005-04-29

申请人： Takahisa Kato ,  Takayuki Yagi ,  Yasuhiro Shimada ,  Yukio Furukawa

发明人： Takahisa Kato ,  Takayuki Yagi ,  Yasuhiro Shimada ,  Yukio Furukawa

IPC分类号： G02B26/08

CPC分类号： G02B7/1821 ,  G02B26/085 ,  Y10S359/90

摘要： There is disclosed a light deflector in which both ends of a movable plate is supported to a support substrate by an elastic support portion, a reflection surface is formed on one surface of the movable plate, and the movable plate is torsion-oscillated about a torsion axis of the elastic support portion as a center to deflect an incident light that enters the reflection surface, wherein a recessed portion is formed on at least one side surface of both sides, which is a surface on which the reflection surface is not formed, and between which the torsion axis of the elastic support portion is interposed.

摘要翻译： 公开了一种光偏转器，其中可动板的两端通过弹性支撑部支撑在支撑基板上，反射面形成在可动板的一个表面上，并且可动板围绕扭转扭转振荡 弹性支撑部分的轴线作为中心以偏转入射到反射表面的入射光，其中在作为未形成反射面的表面的两侧的至少一个侧表面上形成有凹部，以及 弹性支撑部的扭转轴插入其间。

公开(公告)号：US20050265419A1

公开(公告)日：2005-12-01

申请号：US11120951

申请日：2005-05-04

申请人： Kazunari Fujii ,  Hajime Sakata ,  Yukio Furukawa

发明人： Kazunari Fujii ,  Hajime Sakata ,  Yukio Furukawa

IPC分类号： G03B21/00 ,  H01S3/10 ,  H01S5/00 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/125 ,  H04N9/31

CPC分类号： H04N9/3129 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/06256 ,  H01S5/06804

摘要： A distributed Bragg reflection (DBR) semiconductor laser is controlled in an image projecting apparatus. The image projecting apparatus includes the DBR semiconductor laser which is provided with a phase region and a DBR region, a light wavelength converting device for converting fundamental-wave light emitted from the DBR semiconductor laser into second harmonic wave light, an optical deflector for scanning the second harmonic wave in a one-dimensional or two-dimensional manner, and a modulating portion for modulating the DBR semiconductor laser based on an image signal. In the control method, a coefficient calculating step and a wavelength adjusting step are performed within a non-drawing time during which a drawing signal, which corresponds to the image signal, is absent. In the coefficient calculating step, at least one coefficient in a relationship between a DBR current to be injected into the DBR region and a phase current to be injected into the phase region for continuously shifting the wavelength of the fundamental-wave light is calculated. In the wavelength adjusting step, the DBR current injected into the DBR region and the phase current injected into the phase region are changed based on the relationship such that the second harmonic wave light is adjusted.

摘要翻译： 在图像投影装置中控制分布式布拉格反射（DBR）半导体激光器。 图像投影装置包括具有相位区域和DBR区域的DBR半导体激光器，用于将从DBR半导体激光器发射的基波光转换为二次谐波光的光波长转换装置，用于扫描 一维或二维二次谐波，以及用于基于图像信号调制DBR半导体激光器的调制部分。 在控制方法中，系数计算步骤和波长调整步骤在不存在对应于图像信号的绘制信号的非绘制时间内执行。 在系数计算步骤中，计算要注入到DBR区域的DBR电流和要注入到用于连续移位基波的波长的相位区域的相电流之间的关系中的至少一个系数。 在波长调整步骤中，根据调整二次谐波光的关系，改变注入DBR区域的DBR电流和注入相位区域的相电流。

公开(公告)号：US5878066A

公开(公告)日：1999-03-02

申请号：US904448

申请日：1997-07-31

申请人： Natsuhiko Mizutani ,  Hajime Sakata ,  Yukio Furukawa

发明人： Natsuhiko Mizutani ,  Hajime Sakata ,  Yukio Furukawa

IPC分类号： H01S5/062 ,  H01S5/0625 ,  H01S5/10 ,  H01S5/12 ,  H01S5/20 ,  H01S5/227 ,  H01S5/32 ,  H01S5/34 ,  H01S5/343 ,  H01S5/50 ,  H01S3/10

CPC分类号： B82Y20/00 ,  H01S5/0625 ,  H01S5/12 ,  H01S2301/14 ,  H01S5/06203 ,  H01S5/06236 ,  H01S5/1057 ,  H01S5/106 ,  H01S5/1064 ,  H01S5/1215 ,  H01S5/1225 ,  H01S5/124 ,  H01S5/204 ,  H01S5/227 ,  H01S5/2275 ,  H01S5/3201 ,  H01S5/3404 ,  H01S5/3413 ,  H01S5/34306 ,  H01S5/3434 ,  H01S5/5009 ,  H01S5/5018

摘要： An optical semiconductor apparatus includes at least two semiconductor laser portions each having a light waveguide with an active layer and a distributed reflector, and a stimulating unit for independently stimulating the active layers of the light waveguides. The semiconductor laser portions are serially arranged in a light propagation direction. The light waveguides are constructed such that a difference between propagation constants for two different polarization modes in one of the waveguides is different from a difference between propagation constants for the two different polarization modes in the other of the waveguides. When one of injection of a modulation current signal into or application of a modulation voltage to the optical semiconductor apparatus, an oscillation state can be switched between a state in which Bragg wavelengths for one of the two different polarization modes coincide with each other between the light waveguides and a state in which Bragg wavelengths for the other of the two different polarization modes coincide with each other between the light waveguides.

摘要翻译： 光学半导体装置包括至少两个半导体激光器部分，每个半导体激光器部分具有有源层的光波导和分布反射器，以及用于独立地激发光波导的有源层的刺激单元。 半导体激光器部分沿光传播方向串联布置。 光波导被构造成使得波导中的一个中的两个不同偏振模式的传播常数之间的差异不同于另一个波导中两种不同偏振模式的传播常数之差。 当将调制电流信号注入或向光半导体装置施加调制电压中的一个时，可以在两个不同偏振模式中的一个的布拉格波长在光之间彼此重合的状态之间切换振荡状态 波导和两个不同偏振模式中的另一个的布拉格波长在光波导之间彼此重合的状态。

公开(公告)号：US5579350A

公开(公告)日：1996-11-26

申请号：US393947

申请日：1995-02-22

申请人： Yukio Furukawa ,  Akihiko Takada ,  Kazuo Wani

发明人： Yukio Furukawa ,  Akihiko Takada ,  Kazuo Wani

IPC分类号： H04L7/00 ,  H04J3/06

CPC分类号： H04J3/0688

摘要： A clock change circuit contains: a clock gate unit for receiving first and second clock signals, and detecting a timing at which both the first and second clock signals are at an inactive level to output an active timing signal indicating the timing; a delay unit for inputting a select control signal and the timing signal, and outputting a delayed select control signal the state of which is changed to the same state of the select control signal after the active timing signal is received from the clock gate unit; and a select unit for inputting the first and second clock signals, and selects one of the first and second clock signals according to the delayed select signal to output the selected clock signal.

摘要翻译： 时钟转换电路包括：时钟门单元，用于接收第一和第二时钟信号，并且检测第一和第二时钟信号都处于非活动电平的定时，以输出指示定时的有效定时信号; 延迟单元，用于输入选择控制信号和定时信号，并且在从时钟门单元接收到有效定时信号之后，输出其状态改变为选择控制信号的相同状态的延迟选择控制信号; 以及选择单元，用于输入第一和第二时钟信号，并根据延迟的选择信号选择第一和第二时钟信号中的一个，以输出所选择的时钟信号。

公开(公告)号：US09261483B2

公开(公告)日：2016-02-16

申请号：US13810400

申请日：2011-07-08

申请人： Yukio Furukawa

发明人： Yukio Furukawa

IPC分类号： G01N29/00 ,  A61B5/00 ,  A61B8/08 ,  A61B8/13 ,  G01N21/17

CPC分类号： G01N29/00 ,  A61B5/0095 ,  A61B8/08 ,  A61B8/13 ,  G01N21/1702 ,  G01N2021/1787

摘要： An acoustic wave detector includes: a transducer; and a light reflecting member which is positioned between the transducer and a subject surface that is irradiated with the light, and which reflects scattered light on the subject surface. The light reflecting member includes a first reflecting surface and a second reflecting surface positioned closer to the transducer than the first reflecting surface, and a distance between the first reflecting surface and the second reflecting surface is an odd multiple of a half wavelength of a predetermined wavelength included in an acoustic wave generated from the light reflecting member by the scattered light.

摘要翻译： 声波检测器包括：换能器; 以及光反射构件，其位于所述换能器和被所述光照射的被摄体表面之间，并且将散射光反射到所述被摄体表面上。 光反射部件包括比第一反射面更靠近换能器的第一反射面和第二反射面，第一反射面与第二反射面的距离为预定波长的半波长的奇数倍 包括在由光反射构件通过散射光产生的声波中。

公开(公告)号：US08412075B2

公开(公告)日：2013-04-02

申请号：US12992569

申请日：2009-05-11

申请人： Takahiro Akiyama ,  Kazunari Fujii ,  Yukio Furukawa ,  Shinichiro Iimura

发明人： Takahiro Akiyama ,  Kazunari Fujii ,  Yukio Furukawa ,  Shinichiro Iimura

IPC分类号： G03G15/04

CPC分类号： G02B26/127

摘要： A light deflector device includes a light deflector having an oscillation system, a driving unit for driving the oscillation system and a drive controlling unit for supplying a drive signal. The oscillation system simultaneously generates a first oscillating motion of a first frequency and a second oscillating motion of a second frequency. The drive controlling unit supplies a drive signal formed by synthetically combining a first signal having the first frequency and a second signal having the second frequency to the driving unit and, at the same time, another drive signal for changing at least the amplitude of the first oscillating motion, the amplitude of second oscillating motion or the relative phase difference of the first oscillating motion and the second oscillating motion to the driving unit in order to correct an offset of scanning light deflected by the light deflector.

摘要翻译： 光偏转器装置包括具有振荡系统的光偏转器，用于驱动振荡系统的驱动单元和用于提供驱动信号的驱动控制单元。 振荡系统同时产生第一频率的第一振荡运动和第二频率的第二振荡运动。 驱动控制单元将通过将具有第一频率的第一信号和具有第二频率的第二信号合成组合的驱动信号提供给驱动单元，并且同时提供用于至少改变第一频率的振幅的另一个驱动信号 振荡运动，第二振荡运动的幅度或第一振荡运动和第二振荡运动的相对相位差到驱动单元，以便校正由偏光板偏转的扫描光的偏移。

公开(公告)号：US20110303015A1

公开(公告)日：2011-12-15

申请号：US13151543

申请日：2011-06-02

申请人： Shigeru Ichihara ,  Yukio Furukawa ,  Shuichi Kobayashi

发明人： Shigeru Ichihara ,  Yukio Furukawa ,  Shuichi Kobayashi

IPC分类号： G01H9/00

CPC分类号： A61B5/0095 ,  A61B5/0091 ,  A61B5/4312 ,  A61B5/708 ,  A61B8/0825 ,  G01N21/1702 ,  G01N29/2418 ,  G01N2021/1787 ,  G01N2201/0634

摘要： A photoacoustic measuring apparatus includes a light source, a movable holding unit which holds an object, a light diffusing unit which fixes the distance between the light diffusing unit and the holding unit and diffuses light incident from the light source, and an acoustic wave obtaining unit which obtains an acoustic wave generated from the object by the light emitted via the holding unit and the light diffusing unit.

摘要翻译： 一种光声测量装置，包括光源，保持物体的可动保持单元，固定光漫射单元和保持单元之间的距离并漫射从光源入射的光的光漫射单元，以及声波获取单元 其通过由保持单元和光漫射单元发射的光获得从物体产生的声波。

公开(公告)号：US07548362B2

公开(公告)日：2009-06-16

申请号：US11844738

申请日：2007-08-24

申请人： Suguru Miyagawa ,  Yukio Furukawa ,  Yasuhiro Shimada

发明人： Suguru Miyagawa ,  Yukio Furukawa ,  Yasuhiro Shimada

IPC分类号： G02B26/08

CPC分类号： G02B26/105

摘要： An optical deflecting device including a supporting member, an oscillating member, and a driving member for driving the oscillating member, wherein the oscillating member includes a first movable element and a second movable element torsionally oscillating about a common torsion axis, a first torsion spring for coupling the first movable element and the supporting member with each other, and a second torsion spring for coupling the first and second movable elements with each other and having a torsion axis the same as the first torsion spring, and wherein the first movable element is formed with a void configured to avoid blocking of incident light being incident on the second movable element from a direction intersecting with the torsion axis.

摘要翻译： 一种光学偏转装置，包括支撑构件，摆动构件和用于驱动摆动构件的驱动构件，其中所述摆动构件包括第一可动构件和围绕公共扭转轴线扭转摆动的第二可动构件，第一扭转弹簧， 将第一可移动元件和支撑构件彼此联接;以及第二扭转弹簧，用于将第一和第二可移动元件彼此联接并且具有与第一扭转弹簧相同的扭转轴线，并且其中形成第一可移动元件 具有被配置为避免从与扭转轴相交的方向入射在第二可移动元件上的入射光的阻挡。

公开(公告)号：US20090101037A1

公开(公告)日：2009-04-23

申请号：US11997491

申请日：2007-05-30

申请人： Nobuhito Suehira ,  Junichi Seki ,  Yukio Furukawa ,  Hideki Ina

发明人： Nobuhito Suehira ,  Junichi Seki ,  Yukio Furukawa ,  Hideki Ina

IPC分类号： B41F1/54 ,  G01B11/14

CPC分类号： B82Y10/00 ,  B82Y40/00 ,  G01B11/14 ,  G03F7/0002 ,  G03F9/00 ,  G03F9/703 ,  G03F9/7092

摘要： A gap measuring method for measuring a gap between two members by irradiating the two members with light is constituted by preparing a first member and a second member which are disposed opposite to each other; irradiating the first member and the second member with light from one member side to obtain spectral data about intensity of reflected light or transmitted light from the other member side; and determining a gap between the first member and the second member by comparing the obtained spectral data with a database in which a gap length and an intensity spectrum are correlated with each other.

摘要翻译： 通过制备彼此相对布置的第一构件和第二构件来构成用于通过用光照射两个构件来测量两个构件之间的间隙的间隙测量方法; 用来自一个部件侧的光照射第一部件和第二部件，得到关于来自另一个部件侧的反射光强度或透射光的光谱数据; 以及通过将所获得的光谱数据与其中间隙长度和强度谱彼此相关的数据库进行比较来确定第一部件和第二部件之间的间隙。

公开(公告)号：US07474165B2

公开(公告)日：2009-01-06

申请号：US11603058

申请日：2006-11-22

申请人： Takahisa Kato ,  Yukio Furukawa

发明人： Takahisa Kato ,  Yukio Furukawa

IPC分类号： G02B26/08

CPC分类号： G02B26/0866 ,  G02B26/085

摘要： Disclosed is an oscillating device that includes an oscillating system having a plurality of oscillation movable elements, a plurality of elastically supporting portions connected to the oscillation movable elements, and a supporting member for supporting a predetermined portion of the plurality of resiliently supporting portions so that predetermined oscillation movable element or elements are resiliently supported for oscillation about a predetermined oscillation axis, the device further including a driving circuit for driving the oscillating system and a temperature adjusting element for adjusting temperature of the resiliently supporting portions, wherein the oscillating system has a plurality of natural oscillation modes of different frequencies, and wherein the driving circuit functions to oscillate the predetermined movable element about the predetermined oscillation axis, in different natural oscillation modes simultaneously.

摘要翻译： 公开了一种振荡装置，其包括具有多个振动可动元件的振荡系统，连接到振动可动元件的多个弹性支撑部分，以及用于支撑多个弹性支撑部分的预定部分的支撑部件， 振动可移动元件被弹性地支撑以围绕预定的摆动轴线振荡，该装置还包括用于驱动振荡系统的驱动电路和用于调节弹性支撑部分的温度的温度调节元件，其中振荡系统具有多个 不同频率的自然振荡模式，并且其中驱动电路用于以不同的自然振荡模式同时摆动围绕预定振荡轴的预定可移动元件。