公开(公告)号：US08144391B2

公开(公告)日：2012-03-27

申请号：US12676042

申请日：2008-08-27

申请人： Koichi Kusukame ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hiroyuki Furuya

发明人： Koichi Kusukame ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hiroyuki Furuya

IPC分类号： G02F2/02 ,  H01S3/04 ,  H01S3/10

CPC分类号： G02F1/3551 ,  G02F1/3558 ,  G02F2001/3546

摘要： A wavelength converter is provided with an infrared light source (1) for emitting a fundamental wave having a wavelength of 2000 nm or shorter, a wavelength conversion element (3) composed of a nonlinear optical crystal having a periodical polarization reversal structure and adapted to convert a fundamental wave emitted from the infrared light source (1) into a harmonic wave, and a heater (4) for heating the wavelength conversion element (3). The period of the polarization reversal structure is designed so that a quasi phase matching temperature of the fundamental wave and the harmonic wave is 40° C. or higher. The heater (4) heats the wavelength conversion element (3) to a temperature at which quasi phase matching is established, and the nonlinear optical crystal contains a lithium niobate or lithium tantalate including at least any one of additives Mg, In, Zn and Sc as a main component. Thus, optical damage can be suppressed and visible light absorption attributed to ultraviolet light can be reduced.

摘要翻译： 波长转换器设置有用于发射波长为2000nm以下的基波的红外光源（1），由具有周期性极化反转结构的非线性光学晶体构成的波长转换元件（3），其适于转换 从红外光源（1）发射的谐波的基波和用于加热波长转换元件（3）的加热器（4）。 极化反转结构的周期被设计成使得基波和谐波的准相位匹配温度为40℃以上。 加热器（4）将波长转换元件（3）加热到建立准相位匹配的温度，非线性光学晶体包含铌酸锂或钽酸锂，其包括添加剂Mg，In，Zn和Sc中的至少任一种 作为主要组成部分。 因此，可以抑制光学损伤，并且可以降低归因于紫外线的可见光吸收。

公开(公告)号：US08089581B2

公开(公告)日：2012-01-03

申请号：US11997508

申请日：2006-07-26

申请人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tetsuro Mizushima ,  Akihiro Morikawa

发明人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tetsuro Mizushima ,  Akihiro Morikawa

IPC分类号： G02F1/13357

CPC分类号： G02B6/0018 ,  G02B6/0028 ,  G02B6/003 ,  G02B6/0031 ,  G02B6/0051 ,  G02B6/0068 ,  G02F1/133504 ,  G02F1/133524 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133615

摘要： A display for illuminating a liquid crystal display panel with laser light of uniform light quantity distribution, and an illuminator for irradiating with laser light of uniform light quantity distribution. The display includes a liquid crystal display panel (204), laser light sources (205, 206, 207) emitting laser light having wavelengths of green, red, and blue colors, a waveguide plate (201) arranged at the back side of the liquid crystal display panel (204) and performing multiple reflection of laser light, and a diffusion plate (202) arranged at the back side of the waveguide plate (201), diffusing laser light propagating in the waveguide plate (201) and emitting the light toward the liquid crystal display panel (204).

摘要翻译： 一种用于用均匀光量分布的激光照射液晶显示面板的显示器，以及用于照射具有均匀光量分布的激光的照明器。 显示器包括液晶显示面板（204），发射具有绿色，红色和蓝色波长的激光的激光源（205,206,207），布置在液体背面的波导板（201） 水晶显示面板（204），进行激光的多次反射;以及布置在波导板（201）的背面侧的漫射板（202），使在波导板（201）中传播的激光漫射，并朝向 液晶显示面板（204）。

公开(公告)号：US08073022B2

公开(公告)日：2011-12-06

申请号：US12769943

申请日：2010-04-29

申请人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Hiroyuki Furuya ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： H01S3/10

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

摘要： A laser light source device, which is capable of multi-wavelength oscillation, includes a laser light source; and a laser cavity including (i) a fiber, (ii) a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of reflection peaks, and (iii) a second fiber grating provided at a light emission end of the fiber and having a plurality of reflection peaks. Further, the laser light source includes a wavelength converter converting a fundamental wave emitted from the laser cavity into a harmonic wave; a reflection wavelength varying unit shifting reflection wavelengths of the reflection peaks of the second fiber grating; and a controller controlling phase matching conditions of the wavelength converter. As a result, intervals between adjacent reflection peaks of the first fiber grating are different from those between adjacent reflection peaks of the second fiber grating.

摘要翻译： 能够进行多波长振荡的激光光源装置包括激光光源; 以及激光腔，包括（i）光纤，（ii）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（iii）设置在所述光的第二光纤光栅 并具有多个反射峰。 此外，激光光源包括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，移位第二光纤光栅的反射峰的反射波长; 以及控制器，控制波长转换器的相位匹配条件。 结果，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：US08054412B2

公开(公告)日：2011-11-08

申请号：US12280873

申请日：2007-02-21

申请人： Kazuhisa Yamamoto ,  Tatsuo Itoh ,  Tetsuro Mizushima ,  Shinichi Kadowaki

发明人： Kazuhisa Yamamoto ,  Tatsuo Itoh ,  Tetsuro Mizushima ,  Shinichi Kadowaki

IPC分类号： G02F1/1333 ,  G02F1/1335 ,  G02B6/36

CPC分类号： G02B6/0028 ,  G02B6/0006 ,  G02B6/005 ,  G02F1/133621 ,  G02F2001/133622 ,  H01S5/005

摘要： A light source portion having laser light sources emitting red light, green light, and blue light and conventionally disposed integrally with the liquid crystal display panel is spatially separated from the liquid crystal display panel. Accordingly, the power supply, the optical system, and the heat source are incorporated into the light source portion and are thereby completely separated from the liquid crystal display panel. A laser beam emitted from the light source portion is guided to the liquid crystal display panel via a fiber. In this manner, it is possible to achieve a liquid crystal display device capable of significantly reducing the liquid crystal display panel in thickness and weight.

摘要翻译： 具有发射红光，绿光和蓝光的激光光源和与液晶显示面板一体设置的光源部分在空间上与液晶显示面板分开。 因此，电源，光学系统和热源被并入到光源部分中，从而与液晶显示面板完全分离。 从光源部发射的激光束经由光纤被引导到液晶显示面板。 以这种方式，可以实现能够显着降低液晶显示面板的厚度和重量的液晶显示装置。

公开(公告)号：US08050302B2

公开(公告)日：2011-11-01

申请号：US12328131

申请日：2008-12-04

申请人： Hiroyuki Furuya ,  Shinichi Shikii ,  Kazuhisa Yamamoto ,  Koichi Kusukame

发明人： Hiroyuki Furuya ,  Shinichi Shikii ,  Kazuhisa Yamamoto ,  Koichi Kusukame

IPC分类号： H01S3/04 ,  H01S3/13

CPC分类号： H01S3/0675 ,  G02F1/3558 ,  H01S3/0092 ,  H01S3/10069 ,  H01S3/1312 ,  H01S3/1618

摘要： A wavelength conversion laser light source includes: an element temperature switching section that switches a temperature of the wavelength conversion element according to a harmonic wave output value as set in an output setting device, and the element temperature switching section for switching a temperature of a wavelength conversion element according to a harmonic wave output level as set in the output setting device, wherein the element temperature switch section includes an element temperature holding section that holds the wavelength conversion element at the temperature as switched by the element temperature switching section.

摘要翻译： 波长转换激光源包括：元件温度切换部，其根据在输出设定装置中设定的谐波输出值切换波长转换元件的温度;元件温度切换部，切换波长的温度 转换元件根据在输出设定装置中设定的谐波输出电平，其中元件温度开关部分包括元件温度保持部分，其将波长转换元件保持在由元件温度切换部分转换的温度。

公开(公告)号：US08016428B2

公开(公告)日：2011-09-13

申请号：US11917986

申请日：2006-06-15

申请人： Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

发明人： Kenichi Kasazumi ,  Yasuo Kitaoka ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto

IPC分类号： G03B21/26

CPC分类号： 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

摘要： A 2-dimensional beam scan unit reflects emission beams from a red laser light source, a green laser light source and a blue laser light source and scans in a 2-dimensional direction. Diffusion plates diffuse the respective light beams scanned in the 2-dimensional direction to introduce them to corresponding spatial light modulation elements. The respective spatial light modulation elements modulate the respective lights in accordance with video signals of the respective colors. A dichroic prism multiplexes the lights of the three colors after the modulation and introduces the multiplexed lights to a projection lens so that a color image is displayed on a screen. 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.

摘要翻译： 二维光束扫描单元反射来自红色激光光源，绿色激光光源和蓝色激光光源的发射光束，并在二维方向上进行扫描。 扩散板将在二维方向上扫描的各个光束扩散，将它们引入相应的空间光调制元件。 各个空间光调制元件根据各种颜色的视频信号调制各个光。 二向色棱镜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，使得彩色图像显示在屏幕上。 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：US07969532B2

公开(公告)日：2011-06-28

申请号：US12093487

申请日：2006-11-15

申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

IPC分类号： F21V8/00 ,  G02F1/1335

CPC分类号： G02B5/02 ,  G02B3/0056 ,  G02B6/0028 ,  G02B6/0066 ,  G02B19/0028 ,  G02B19/0057 ,  G02B26/105 ,  G02B27/1053 ,  G02B27/1086 ,  G02B27/144 ,  G02B27/145 ,  G02B27/48 ,  G02F1/133621

摘要： A surface illuminator has a uniform luminance over a large area by using a laser light source, has a wide color reproduction range, and is capable of suppressing a speckle noise. A liquid crystal display uses such a surface illuminator. The surface illuminator includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that causes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and causes the incident laser beam to emit from a first major surface. Further, the liquid crystal display includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from the backside in this liquid crystal display.

摘要翻译： 表面照明器通过使用激光源在大面积上具有均匀的亮度，具有宽的色彩再现范围，并且能够抑制斑点噪声。 液晶显示器使用这种表面照明器。 表面照明器包括发射激光束的激光光源; 光束扫描部分，其偏转和扫描激光束; 以及第一板状光导，其使由光束扫描部偏转和扫描的激光束从端面部入射，并使入射的激光束从第一主表面发射。 此外，液晶显示器包括液晶显示面板和表面照明器，其中表面照明器用作在该液晶显示器中从背面照亮液晶显示面板的背光照明器。

公开(公告)号：US07967452B2

公开(公告)日：2011-06-28

申请号：US12064784

申请日：2006-08-24

申请人： Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

发明人： Tatsuo Itoh ,  Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Kiminori Mizuuchi

IPC分类号： G03B21/28

CPC分类号： G03B21/14 ,  G03B21/2053 ,  G03B21/208 ,  H04N9/3105 ,  H04N9/3129 ,  H04N9/315 ,  H04N9/3155 ,  H04N9/3161

摘要： 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

摘要翻译： 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）在图像上的数值孔径B时满足A <686×B2的关系 设置照明光学系统的一侧。

公开(公告)号：US07954962B2

公开(公告)日：2011-06-07

申请号：US11997117

申请日：2006-06-01

申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Tatsuo Itoh ,  Tomoya Sugita ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Tatsuo Itoh ,  Tomoya Sugita ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki

IPC分类号： G02B13/20 ,  G03B21/26

CPC分类号： H04N9/3161 ,  G02B26/105 ,  G02B27/0961 ,  G03B21/005 ,  H04N9/3129

摘要： A laser image display including a laser light source emitting laser light, a beam deflector element for receiving laser light and deflecting its advancing direction, a beam deflecting element control section for controlling the degree of deflection performed by the beam deflector element, an optical integrator for receiving and guiding the deflected laser light to output from its outputting end face, a pseudo surface light source element for scattering the deflected laser light, and a modulation element for receiving and modulating the laser light scattered by the false surface light source element.

摘要翻译： 一种激光图像显示器，包括发射激光的激光源，用于接收激光并偏转其前进方向的光束偏转元件，用于控制由光束偏转元件执行的偏转程度的光束偏转元件控制部分，用于 接收和引导偏转的激光从其输出端面输出，用于散射偏转的激光的伪平面光源元件，以及用于接收和调制由假面光源元件散射的激光的调制元件。

公开(公告)号：US07918600B2

公开(公告)日：2011-04-05

申请号：US12183420

申请日：2008-07-31

申请人： Takayuki Nagata ,  Kazuhisa Yamamoto ,  Tatsuo Itoh

发明人： Takayuki Nagata ,  Kazuhisa Yamamoto ,  Tatsuo Itoh

IPC分类号： F21V7/04

CPC分类号： G02B6/0028 ,  G02B6/0038 ,  G02B6/0046 ,  G02B6/0068

摘要： A thin planar illumination device with a high light utilization efficiency is provided. In a planar illumination device 10, light source sections 15, 16, 17 and 18 each radiates laser light. The light guide members 19 and 20 polarize, by total reflection, light incident from side surfaces 19b and 20b on two opposite sides thereof, so as to be radiated from incident surfaces 19a and 20a, respectively. In a light guide plate 21, the light is incident from side surfaces beside the respective light guide members 19 and 20 so as to radiate irradiation light 24 from main surfaces 21a and 21b. The main surface of the light guide plate 21 is formed by a plurality of inclined surfaces, each being gradually thinned from the edge surfaces on two sides thereof toward a center thereof.

摘要翻译： 提供了具有高光利用效率的薄平面照明装置。 在平面照明装置10中，光源部15,16,17,18分别照射激光。 导光构件19和20通过全反射使从侧表面19b和20b的两个相对侧入射的光分别偏振，以便从入射表面19a和20a辐射。 在导光板21中，光从各导光体19,20的旁边的侧面入射，从而从主表面21a和21b辐射照射光24。 导光板21的主表面由多个倾斜表面形成，每个倾斜表面从其两侧的边缘表面朝向其中心逐渐变薄。