公开(公告)号：US07733927B2

公开(公告)日：2010-06-08

申请号：US11812732

申请日：2007-06-21

Applicant: Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

Inventor： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC: H01S3/10

CPC classification number: H01S3/0675 ,  H01S3/005 ,  H01S3/06716 ,  H01S3/0809 ,  H01S3/0826 ,  H01S3/09415 ,  H01S3/1053 ,  H01S3/1055 ,  H01S3/1618 ,  H04N9/3129

Abstract: The present invention concerns a laser light source device capable of multiwavelength oscillation. This laser light source device is provided with a laser light source; a laser cavity including a fiber, a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of reflection peaks, and a second fiber grating provided at a light emission end of the fiber and having a plurality of reflection peaks: a wavelength converter for converting a fundamental wave emitted from the laser cavity into a harmonic wave; a reflection wavelength varying unit capable of shifting the reflection wavelengths of the reflection peaks of the second fiber grating; and a controller for controlling phase matching conditions of the wavelength converter. Intervals between adjacent reflection peaks of the first fiber grating are different from those between adjacent reflection peaks of the second fiber grating.

Abstract translation: 本发明涉及能够进行多波长振荡的激光光源装置。 该激光光源装置设置有激光光源; 包括光纤的激光腔，设置在所述光纤的朝向所述激光光源的一侧并具有多个反射峰的第一光纤光栅，以及设置在所述光纤的发光端的第二光纤光栅，并且具有多个 反射峰：用于将从激光腔发射的基波转换为谐波的波长转换器; 反射波长变化单元，其能够移动第二光纤光栅的反射峰的反射波长; 以及用于控制波长转换器的相位匹配条件的控制器。 第一光纤光栅的相邻反射峰之间的间隔与第二光纤光栅的相邻反射峰之间的间隔不同。

公开(公告)号：US20100110533A1

公开(公告)日：2010-05-06

申请号：US12528553

申请日：2008-12-24

Applicant: Koichi Kusukame ,  Hiroyuki Furuya ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki

Inventor： Koichi Kusukame ,  Hiroyuki Furuya ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki

IPC: G02F1/35

CPC classification number: G02F1/3558 ,  G02B27/102 ,  G02B27/149 ,  G02F1/133621 ,  G02F1/3544 ,  G02F2001/3548 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3194

Abstract: A laser light source (100) includes a semiconductor laser (101), a wavelength converting element (104) made of a non-linear optical crystal for converting excitation light from the semiconductor laser (101) into wavelength converted light having a wavelength different from the wavelength of the excitation light, a photodiode (109) for measuring a part of the wavelength converted light to be emitted from the wavelength converting element (104) as output light, a photodiode (110) for measuring the excitation light to be emitted from the wavelength converting element (104), and a control circuit (103), wherein the control circuit (103) simultaneously performs an output constant control of making the intensity of the wavelength converted light constant, using a current driving circuit (102), and a temperature control of adjusting the temperature of the wavelength converting element (104), using a heater (105).

Abstract translation: 激光光源（100）包括半导体激光器（101），由非线性光学晶体制成的波长转换元件（104），用于将来自半导体激光器（101）的激发光转换成波长转换光，其波长不同于 激发光的波长，用于测量从波长转换元件（104）发射的波长转换光的一部分作为输出光的光电二极管（109），用于测量从...发射的激发光的光电二极管（110） 波长转换元件（104）和控制电路（103），其中控制电路（103）使用电流驱动电路（102）同时执行使波长转换光的强度恒定的输出恒定控制，以及 使用加热器（105）调节波长转换元件（104）的温度的温度控制。

公开(公告)号：US20100103966A1

公开(公告)日：2010-04-29

申请号：US12532213

申请日：2009-01-20

Applicant: Tetsuro Mizushima ,  Hiroyuki Furuya ,  Shinichi Shikii ,  Koichi Kusukame ,  Nobuyuki Horikawa ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

Inventor： Tetsuro Mizushima ,  Hiroyuki Furuya ,  Shinichi Shikii ,  Koichi Kusukame ,  Nobuyuki Horikawa ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC: H01S3/10

CPC classification number: G02F1/37 ,  G02B6/0028 ,  G02B6/0078 ,  G02F1/0147 ,  G02F1/29 ,  G02F2001/3503 ,  G02F2001/3546 ,  G02F2001/372 ,  G02F2201/17 ,  G02F2201/34 ,  G02F2203/05 ,  H01S5/0092 ,  H01S5/0687 ,  H04N9/3161

Abstract: A wavelength conversion laser is provided with a pair of fundamental wave reflecting surfaces for reflecting a fundamental wave to define a plurality of fundamental wave paths passing a wavelength conversion element at different angles, and a control unit for controlling wavelength conversion efficiencies so that the wavelength conversion efficiency on a specific one of the plurality of fundamental wave paths extending in different directions between the pair of fundamental wave reflecting surfaces is highest.

Abstract translation: 波长转换激光器设置有一对基波反射表面，用于反射基波以限定以不同角度通过波长转换元件的多个基本波径;以及控制单元，用于控制波长转换效率，使得波长转换 在一对基波反射面之间沿不同方向延伸的多个基波路径中的特定一个基波波长上的效率最高。

公开(公告)号：US07692848B2

公开(公告)日：2010-04-06

申请号：US12090064

申请日：2006-10-11

Applicant: Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

Inventor： Hiroyuki Furuya ,  Kazuhisa Yamamoto ,  Kiminori Mizuuchi

IPC: G02F1/35 ,  G02F2/02

CPC classification number: G02F1/3775 ,  G02B6/4206 ,  G02B6/4214 ,  G02F1/133615 ,  G02F1/3532 ,  G02F2202/20 ,  G02F2203/21 ,  H04N9/3161

Abstract: A wavelength conversion module includes: a first fundamental wave propagation optical fiber for propagating a fundamental wave emitted from a laser light source; a first wavelength conversion element, optically connected to the first fundamental wave propagation optical fiber, for converting the fundamental wave emitted from the first fundamental wave propagation optical fiber into a harmonic wave; and a first harmonic propagation optical fiber, optically connected to the first wavelength conversion element, for propagating the harmonic wave emitted from the first wavelength conversion element, wherein the core diameter of the first harmonic propagation optical fiber is 0.5 to 0.9 times as large as the core diameter of first fundamental wave propagation optical fiber.

Abstract translation: 波长转换模块包括：第一基波传播光纤，用于传播从激光光源发射的基波; 第一波长转换元件，光连接到第一基波传播光纤，用于将从第一基波传播光纤发射的基波转换成谐波; 以及第一谐波传播光纤，其与第一波长转换元件光学连接，用于传播从第一波长转换元件发射的谐波，其中一次谐波传播光纤的纤芯直径为该第一波长转换元件的核心直径的0.5至0.9倍 第一基波传播光纤的芯径。

公开(公告)号：US20100045894A1

公开(公告)日：2010-02-25

申请号：US12443881

申请日：2007-09-25

Applicant: Tatsuo Itoh ,  Takayuki Nagata ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto

Inventor： Tatsuo Itoh ,  Takayuki Nagata ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto

IPC: G02F1/1335 ,  F21V7/04

CPC classification number: G02B6/0046 ,  G02B6/0025 ,  G02B6/003 ,  G02B6/0031 ,  H01S5/005 ,  H01S5/4012 ,  H01S5/4025

Abstract: Laser lights emitted from a light source 30 are diffused in a direction parallel to main surfaces of a light guide plate 9 by a one-dimensional diffuser 5. The diffused laser lights are converted to parallel lights by a first cylindrical lens 6, and are then converged in a direction of the thickness of the light guide plate 9 by a second cylindrical lens 7. The converged laser lights are reflected 90 degrees twice by a mirror 8, and are guided to a side surface of the light guide plate 9.

Abstract translation: 从光源30发射的激光通过一维散射体5在与导光板9的主表面平行的方向上扩散。扩散的激光由第一柱面透镜6转换为平行光，然后是 通过第二柱面透镜7在导光板9的厚度方向上会聚。会聚的激光由反射镜8反射90度两次，并被引导到导光板9的侧表面。

公开(公告)号：US20100020291A1

公开(公告)日：2010-01-28

申请号：US11917986

申请日：2006-06-15

Applicant: Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

Inventor： Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC: G03B21/14

CPC classification number: G02B27/149 ,  G02B17/004 ,  G02B26/0808 ,  G02B27/0905 ,  G02B27/0933 ,  G02B27/0944 ,  G02B27/102 ,  G02B27/1046 ,  G02B27/1093 ,  G02B27/145 ,  G03B21/14 ,  G03B21/2033 ,  G03B21/208 ,  G03B33/12 ,  H04N9/3161

Abstract: A 2-dimensional beam scan unit (2) reflects emission beams from a red laser light source (1a), a green laser light source (1b) and a blue laser light source (1c) and scans in a 2-dimensional direction. Diffusion plates (3a, 3b, 3c) diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements (5a, 5b, 5c). The respective spatial light modulation elements (5a, 5b, 5c) modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism (6) multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens (7) so that a color image is displayed on a screen (8). Since the 2-dimensional light emitted from the beam scan unit is diffused to illuminate the spatial light modulation element, it is possible to change the optical axis of the beam emerging from the light diffusion member for irradiating the spatial light modulation element moment by moment, thereby effectively suppressing speckle noise.

Abstract translation: 二维光束扫描单元（2）反射来自红色激光光源（1a），绿色激光光源（1b）和蓝色激光光源（1c）的发射光束，并在二维方向扫描。 扩散板（3a，3b，3c）扩散在二维方向上扫描的各个光束，将它们引入相应的空间光调制元件（5a，5b，5c）。 各个空间光调制元件（5a，5b，5c）根据各种颜色的视频信号调制各个光。 分色棱镜（6）在调制之后复用三种颜色的光，并将多路复用的光引入投影透镜（7），使得彩色图像显示在屏幕（8）上。 由于从射束扫描单元发射的二维光被散射以照射空间光调制元件，所以可以改变从光漫射构件出射的用于照射空间光调制元件的光束的光轴， 从而有效抑制斑点噪声。

公开(公告)号：US20090316431A1

公开(公告)日：2009-12-24

申请号：US12521046

申请日：2007-12-11

Applicant: Takayuki Nagata ,  Tatsuo Itoh ,  Kazuhisa Yamamoto

Inventor： Takayuki Nagata ,  Tatsuo Itoh ,  Kazuhisa Yamamoto

IPC: F21V8/00 ,  F21V7/00

CPC classification number: G02F1/13362 ,  G02B6/0028 ,  G02B6/0038 ,  G02B6/0048 ,  G02B6/0056 ,  G02B6/0061 ,  G02B6/0068 ,  G02B6/0076 ,  G02F1/133615

Abstract: A light source section (1) that emits linearly polarized laser light; a light guide (12) that is shaped as a rectangular parallelepiped whose one main surface has a mirror array (12c) thereon, the mirror array (12c) having formed thereon a plurality of reflecting surfaces that totally reflect the laser light incident on an incident surface (12a), of the light guide, perpendicular to the one main surface and emit the laser light from an emitting surface (12b), of the light guide, perpendicular to the one main surface, the reflecting surfaces being formed in a stepped manner; and a light-guiding plate (3) that makes the laser light, emitted from the light guide (12), incident on an incident surface (3a) of the light-guiding plate and emits the laser light from an emitting surface (3b) of the light-guiding plate, are provided.

Abstract translation: 发射线偏振激光的光源部分（1） 成形为长方体的导光体（12），其一个主表面上具有反射镜阵列（12c），所述反射镜阵列（12c）形成有多个反射表面，所述多个反射表面完全反映入射到事件的激光 所述导光体的表面（12a）垂直于所述一个主表面并且从所述导光体的发射表面（12b）发射垂直于所述一个主表面的激光，所述反射表面以阶梯形式形成 ; 以及导光板（3），其使从所述导光体（12）射出的激光入射在所述导光板的入射面（3a）上并从所述发光面（3b）射出激光， 的导光板。

公开(公告)号：US20090310087A1

公开(公告)日：2009-12-17

申请号：US12295072

申请日：2007-04-05

Applicant: Tatsuo Itoh ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto

Inventor： Tatsuo Itoh ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto

IPC: G02F1/29 ,  G03B21/14

CPC classification number: H04N9/3161 ,  G02B27/48 ,  G02F2203/12 ,  G03B21/005 ,  H04N9/3152

Abstract: An object of the invention is to miniaturize a projection display device, enhance reliability of the device, and reduce speckle noise. A blue laser (1), a red laser (2), and a green laser (3) emit blue laser light, red laser light, and green laser light, respectively. A spatial light modulation element (14) modulates the blue laser light emitted from the blue laser (1), the red laser light emitted from the red laser (2), and the green laser light emitted from the green laser (3). A projection lens (15) projects the laser light modulated by the spatial light modulation element (14) onto a screen. First and second light diffusing elements (8 and 9) are arranged on an optical axis between the blue laser (1), the red laser (2), and the green laser (3); and the spatial light modulation element (14) to change the degree of diffusion of the blue laser light, the red laser light, and the green laser light temporally and electrically.

Abstract translation: 本发明的目的在于使投影型显示装置小型化，提高装置的可靠性，减少散斑噪音。 蓝色激光（1），红色激光（2）和绿色激光（3）分别发出蓝色激光，红色激光和绿色激光。 空间光调制元件（14）调制从蓝色激光器（1）发射的蓝色激光，从红色激光器（2）发射的红色激光以及从绿色激光器（3）发出的绿色激光。 投影透镜（15）将由空间光调制元件（14）调制的激光投影到屏幕上。 第一和第二光散射元件（8和9）布置在蓝色激光器（1），红色激光器（2）和绿色激光器（3）之间的光轴上; 以及空间光调制元件（14），用于时间和电地改变蓝色激光，红色激光和绿色激光的扩散程度。

公开(公告)号：US07623559B2

公开(公告)日：2009-11-24

申请号：US12018485

申请日：2008-01-23

Applicant: Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Makoto Kato

Inventor： Kazuhisa Yamamoto ,  Kiminori Mizuuchi ,  Yasuo Kitaoka ,  Makoto Kato

IPC: H01S3/10

CPC classification number: G02F1/37 ,  G02F1/3558 ,  G02F1/3775 ,  G02F2203/60 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/23 ,  H01S5/0092 ,  H01S5/02 ,  H01S5/40 ,  H01S5/4087

Abstract: After forming domain inverted layers 3 in an LiTaO3 substrate 1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed, a stable proton exchange layer 8 is formed, where an increase in refractive index generated during high-temperature annealing is lowered, thereby providing a stable optical wavelength conversion element. Thus, the phase-matched wavelength becomes constant, and variation in harmonic wave output is eliminated. Consequently, with respect to an optical wavelength conversion element utilizing a non-linear optical effect, a highly reliable element is provided.

公开(公告)号：US20090262262A1

公开(公告)日：2009-10-22

申请号：US12064784

申请日：2006-08-24

Applicant: Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

Inventor： Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

IPC: H04N9/31

CPC classification number: G03B21/14 ,  G03B21/2053 ,  G03B21/208 ,  H04N9/3105 ,  H04N9/3129 ,  H04N9/315 ,  H04N9/3155 ,  H04N9/3161

Abstract: A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least one spatial light modulation element satisfies relationship of A

Abstract translation: 即使人们直视激光束也能够安全地投射型显示装置。 激光操作控制单元设置至少一个激光源的输出功率，使得至少一个空间光调制元件上的激光束的强度A（mW / mm2）在图像侧的数值孔径B处满足A <686×2B的关系 设置照明光学系统。