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公开(公告)号：US20070216990A1
公开(公告)日：2007-09-20
申请号：US10593866
申请日：2005-03-15
IPC分类号： G02F1/00
CPC分类号： G02F1/3558 , G02F2201/15
摘要： There is provided a stable optical element having a fine, uniform, and wide-ranging domain inversion structure in a ferroelectric crystal. This includes a plurality of domain inversions (101) formed on an MgO:LiNbO3 substrate (100), and a groove (102) formed on the substrate surface between the domain inversions (101). The depth T′ of substantially all of the domain inversions (101) satisfies the relation T′
摘要翻译： 提供了在铁电晶体中具有精细，均匀且宽范围的畴反转结构的稳定的光学元件。 这包括在MgO：LiNbO 3衬底（100）上形成的多个畴反转（101）和在畴反转（101）之间形成在衬底表面上的凹槽（102）。 基本上所有的畴反转（101）的深度T'满足关于衬底厚度T的关系T'
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12.发明申请Optical element, laser light source, and two-dimensional image forming apparatus 有权光学元件，激光光源和二维图像形成装置公开(公告)号：US20070140616A1
公开(公告)日：2007-06-21
申请号：US10582341
申请日：2004-12-09
IPC分类号： G02B6/42
CPC分类号： G02B27/0994 , G02B6/4214 , G02B19/0028 , G02B19/0052 , G03B21/2033 , G03B21/208
摘要： An optical element (10) according to the present invention is provided with a plurality of waveguides (11)˜(13) and a plurality of light path coupling parts (21), (22) coupling adjacent waveguides so as to optically couple said plural waveguides serially, wherein the paths for transmitting lights through the plural waveguides are curved at the optical path coupling parts, thereby the optical elements which is converted the incident laser light into the emitted light having uniform cross-sectional light intensity distribution can give a compact structure, further a laser light source that employs the optical element, and a two-dimensional image forming apparatus that employs the laser light source can also give a compact structure.
摘要翻译： 根据本发明的光学元件（10）设置有多个波导（11）〜（13）和多个耦合相邻波导的光路耦合部分（21），（22），以便将所述多个 其中通过多个波导传输光的路径在光路耦合部分弯曲，由此将入射激光转换成具有均匀横截面光强度分布的发射光的光学元件可以产生紧凑的结构 进一步使用该光学元件的激光光源和采用该激光光源的二维图像形成装置也可以得到紧凑的结构。
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13.发明授权Method for forming domain-inverted structure and optical element with domain-inverted structure 有权用于形成域反转结构的方法和具有域倒置结构的光学元件公开(公告)号：US07230753B2
公开(公告)日：2007-06-12
申请号：US10535975
申请日：2003-11-21
CPC分类号： G02F1/3558
摘要： A method for forming a domain-inverted structure includes the following: using a ferroelectric substrate (1) having a principal surface substantially perpendicular to the Z axis of crystals; providing a first electrode (3) on the principal surface of the ferroelectric substrate, the first electrode having a pattern of a plurality of electrode fingers (5) that are arranged periodically; providing a counter electrode (6) on the other side of the ferroelectric substrate so as to be opposite from the first electrode; and applying an electric field to the ferroelectric substrate with the first electrode and the counter electrode, thereby forming domain-inverted regions corresponding to the pattern of the first electrode in the ferroelectric substrate. Each of the electrode fingers of the first electrode is located so that a direction from a base to a tip (5a) of the electrode finger is aligned with the Y-axis direction of the crystals of the ferroelectric substrate. This method can provide a short-period uniform domain-inverted structure.
摘要翻译： 用于形成畴反转结构的方法包括：使用具有基本上垂直于晶体的Z轴的主表面的铁电体基板（1） 在所述强电介质基板的主表面上设置第一电极，所述第一电极具有周期性排列的多个电极指（5）的图案; 在所述铁电体基板的另一侧设置与所述第一电极相对的对置电极（6）; 并且利用第一电极和对电极向铁电体基板施加电场，从而形成与铁电体基板中的第一电极的图案对应的畴反转区域。 第一电极的每个电极指的位置使得从电极指的基部到尖端（5a）的方向与铁电体的晶体的Y轴方向一致。 该方法可以提供短周期均匀域倒置结构。
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14.发明授权Wavelength conversion element, laser light source, two-dimensional image display and laser processing system 有权波长转换元件，激光光源，二维图像显示和激光加工系统公开(公告)号：US08018646B2
公开(公告)日：2011-09-13
申请号：US11997099
申请日：2006-07-26
IPC分类号： G02F1/35
CPC分类号： G02F1/3558 , C30B15/00 , C30B29/30 , G02F1/3551 , G02F1/37 , G02F2202/20 , G02F2203/21
摘要： A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, wherein a visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate. Further, a laser light having an average output of 1 W or more is outputted by shortening a wavelength of inputted laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, a breakdown of crystal can be prevented and a stabilization of output characteristics at high output can be realized. As a result, an absorption of green light induced by ultraviolet light can also be suppressed and a saturation of output and the breakdown of crystal can be avoided.
摘要翻译： 波长转换元件设置有包括具有周期性极化结构的非线性光学单晶的衬底，其中当将紫外光照射到衬底时，衬底的可见光透射率为85％以上。 此外，通过缩短波长为640nm至2000nm的输入激光的波长，输出平均输出为1W以上的激光。 通过以这种方式照射紫外线时的可见光透射特性的改善，可以防止晶体的破坏，并且能够实现高输出下的输出特性的稳定化。 结果，也可以抑制紫外线诱发的绿光的吸收，可以避免输出的饱和和晶体的击穿。
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公开(公告)号：US20080232412A1
公开(公告)日：2008-09-25
申请号：US10584077
申请日：2004-12-21
CPC分类号： H01S5/18386 , H01S3/109 , H01S5/0421 , H01S5/0425 , H01S5/0655 , H01S5/14 , H01S5/18391 , H01S5/2086 , H01S5/4062 , H01S5/423 , H01S2301/166
摘要： A surface emitting laser (100a) includes an active layer (3) disposed on a semiconductor substrate (2a), and a pair of upper and lower electrodes (5,6) for injecting carriers into the active layer (3). The plane surface of the lower electrode (6) is shaped into a star so that injection of current into the active layer (3) from the lower electrode (6) is carried out with a high density at the center of the lower electrode (6) and with a low density at its periphery part. In the surface emitting laser (100a), the density distribution of the carriers injected into the active layer corresponds to the power distribution of light inside the active layer. Thereby, hole burning due to an increase in the current density in the region of the active layer corresponding to the peripheral part of the electrode is avoided, and the transverse mode stability during high output operation is significantly enhanced to improve high-output characteristic.
摘要翻译： 表面发射激光器（100a）包括设置在半导体衬底（2a）上的有源层（3）和用于将载流子注入有源层（3）的一对上下电极（5,6）。 下部电极（6）的平面被成形为星形，使得从下部电极（6）向下部电极（6）的中心以高密度注入电流进入有源层（3） ）并且在其周边部分具有低密度。 在表面发射激光器（100a）中，注入有源层的载流子的密度分布对应于有源层内的光的功率分布。 因此，避免了由于与电极的周边部分相对应的有源层的区域中的电流密度的增加而导致的空穴燃烧，并且显着增强了高输出操作期间的横向模式稳定性，从而提高了高输出特性。
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公开(公告)号：US07399084B2
公开(公告)日：2008-07-15
申请号：US10576067
申请日：2005-04-06
IPC分类号： G03B21/14
CPC分类号： H04N9/3129
摘要： A light diffuser containing light diffusing elements is arranged in the most appropriate position between a spatial light modulator and an illumination optical system. Thereby, particles as light diffusing elements diffuse rays of light emitted from a laser light source. Accordingly, indefinite numbers of speckle pattern are formed so that, for example, a speckle noise which occurs on an image projected to a screen is reduced. As a result, loss of light amount after light diffusion is suppressed to small amount, and thereby a laser image display apparatus capable of displaying a bright and high-quality image having no luminosity irregularity is provided.
摘要翻译： 包含光漫射元件的光漫射器被布置在空间光调制器和照明光学系统之间的最适当位置。 因此，作为光漫射元件的粒子漫射从激光光源射出的光线。 因此，形成不确定数量的斑纹图案，使得例如在投影到屏幕上的图像上发生的散斑噪声减小。 结果，光扩散后的光量的损失被抑制到少量，从而提供能够显示不具有亮度不规则性的明亮且高质量的图像的激光图像显示装置。
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公开(公告)号：US20070081220A1
公开(公告)日：2007-04-12
申请号：US10582340
申请日：2004-12-09
申请人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
发明人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
IPC分类号： G02B26/08
CPC分类号： G02B26/125 , G02B26/123 , H04N3/08 , H04N9/3129 , Y10S359/90
摘要： In a display unit which makes coherent light perform scanning on a screen to display an image, it is necessary to rotate a polygon mirror at ultrahigh speed for display of a high resolution image such as HDTV, and therefore, a high-performance polygon mirror must be employed, and further, noise and power consumption during rotation of the polygon mirror cause problems. Mirrors for multiple reflection (6a) and (6b) are inserted in a coherent light scanning optical system, whereby plural scanning lines can be obtained while one plane of the polygon mirror (5) scans one line of coherent light, leading to reduction in the rpm of the polygon mirror.
摘要翻译： 在使相干光在屏幕上进行扫描以显示图像的显示单元中，需要以超高速度旋转多面镜以显示诸如HDTV的高分辨率图像，因此，高性能多面镜必须 并且进一步地，在多面镜旋转期间的噪声和功率消耗导致问题。 多反射镜（6a）和（6b）的反射镜被插入相干光扫描光学系统中，从而可以获得多个扫描线，同时多面镜（5）的一个平面扫描一条相干光线，从而减少 在多面镜的转速。
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18.发明授权公开(公告)号：US06829080B2
公开(公告)日：2004-12-07
申请号：US10123892
申请日：2002-04-16
IPC分类号： G02F202
CPC分类号： G11B7/126 , G02B6/122 , G02B2006/12126 , G02F1/377 , H01S5/0092 , H01S5/02248
摘要： An optical waveguide device is provided that can reduce external interference noise. The optical waveguide device includes a substrate, an optical waveguide formed on the substrate, a periodic polarization inversion region formed on the optical waveguide, and an optical thin film formed in a portion of the optical waveguide. The optical waveguide (refractive index: N2) and the optical thin film (refractive index: N1) differ in refractive index dispersion, and the magnitude relationship between the refractive indexes is reversed depending on wavelength. The relationship N1>N2 is established for light having a shorter wavelength, while the relationship N2>N1 is established for light having a longer wavelength.
摘要翻译： 提供了可以减少外部干扰噪声的光波导装置。 光波导器件包括衬底，形成在衬底上的光波导，形成在光波导上的周期性偏振反转区域和形成在光波导的一部分中的光学薄膜。 光波导（折射率：N2）和光学薄膜（折射率：N1）的折射率色散不同，折射率之间的大小关系根据波长而反转。 对于具有较短波长的光建立关系N1> N2，而对于具有较长波长的光则建立关系N2> N1。
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公开(公告)号：US20120152892A1
公开(公告)日：2012-06-21
申请号：US13393180
申请日：2010-09-15
CPC分类号： G02F1/3558 , G02F2001/3548
摘要： Provided is a method for manufacturing an optical element, the method including: an electrode forming step of forming metal films on the plus z face and minus z face of a ferroelectric substrate to fabricate electrodes; a periodic electrode forming step of forming the metal film on the plus z face into a periodic electrode; a polarization reversal forming step of applying a voltage between the periodic electrode and the electrode on the minus z face to form polarization-reversed regions in the ferroelectric substrate; a surface treating step of removing the electrode, the periodic electrode, and surface layers on the plus z face and minus z face of the ferroelectric substrate; and an annealing step of applying predetermined heat to the ferroelectric substrate having the surface layers removed therefrom.
摘要翻译： 提供一种光学元件的制造方法，该方法包括：在强电介质基板的正z面和负z面上形成金属膜的电极形成工序，制作电极; 周期性电极形成步骤，将正z面上的金属膜形成为周期性电极; 极化反转形成步骤，在负z面上施加周期性电极与电极之间的电压，在铁电体衬底中形成极化反转区域; 表面处理步骤，去除铁电体基板的正z面和负z面上的电极，周期性电极和表面层; 以及将预定的热量施加到从其去除表面层的铁电体基板上的退火步骤。
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公开(公告)号：US07593151B2
公开(公告)日：2009-09-22
申请号：US10582340
申请日：2004-12-09
申请人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
发明人： Toshifumi Yokoyama , Ken'ichi Kasazumi , Akihiro Morikawa , Kiminori Mizuuchi , Kazuhisa Yamamoto
IPC分类号： G02B26/08
CPC分类号： G02B26/125 , G02B26/123 , H04N3/08 , H04N9/3129 , Y10S359/90
摘要： In a display unit which makes coherent light perform scanning on a screen to display an image, it is necessary to rotate a polygon mirror at ultrahigh speed for display of a high resolution image such as HDTV, and therefore, a high-performance polygon mirror must be employed, and further, noise and power consumption during rotation of the polygon mirror cause problems.Mirrors for multiple reflection (6a) and (6b) are inserted in a coherent light scanning optical system, whereby plural scanning lines can be obtained while one plane of the polygon mirror (5) scans one line of coherent light, leading to reduction in the rpm of the polygon mirror.
摘要翻译： 在使相干光在屏幕上进行扫描以显示图像的显示单元中，需要以超高速度旋转多面镜以显示诸如HDTV的高分辨率图像，因此，高性能多面镜必须 并且进一步地，在多面镜旋转期间的噪声和功率消耗导致问题。 多反射镜（6a）和（6b）的反射镜被插入到相干光扫描光学系统中，从而可以获得多个扫描线，而多面镜（5）的一个平面扫描一条相干光，导致 多角镜的转速。
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