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公开(公告)号：US4206967A
公开(公告)日：1980-06-10
申请号：US921220
申请日：1978-07-03
申请人： Seiichi Onoda , Shojiro Kawakami , Shigeo Nishida , Toshiki P. Tanaka , Tsuneo Suganuma , Masao Sumi
发明人： Seiichi Onoda , Shojiro Kawakami , Shigeo Nishida , Toshiki P. Tanaka , Tsuneo Suganuma , Masao Sumi
CPC分类号： G02B6/03627 , C03C13/04 , C03C13/046
摘要： A three-layer structure optical fiber comprises a first transparent dielectric core layer having a relatively high refractive index, a second transparent dielectric intermediate layer having a relatively low refractive index and a third transparent dielectric cladding layer having an intermediate refractive index wherein the parameter of the optical fiber is determined as follows: ##EQU1## where B is the bandwidth of the signal to be transmitted, z is the transmission distance, C is the velocity of light in vacuum, .eta.o is the refractive index of the core layer, q is the ratio of refractive indices between the core layer and second layer, V = normalized frequency, ##EQU2## p is the ratio of refractive index between the core layer and the third layer, and U.sub.11 =2,405.
摘要翻译： 三层结构光纤包括具有较高折射率的第一透明介质芯层，具有较低折射率的第二透明介电中间层和具有中等折射率的第三透明电介质包覆层，其中， 光纤确定如下：其中B是要发射的信号的带宽，z是传输距离，C是真空中的光速，eta是芯层的折射率，q是 核心层和第二层之间的折射率的比率，V =归一化频率，p是核心层和第三层之间的折射率比，U11 = 2,405。
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公开(公告)号：USRE32475E
公开(公告)日：1987-08-18
申请号：US711820
申请日：1985-03-14
申请人： Shigeo Nishida , Shojiro Kawakami , Yoichi Ohtaka , Seiichi Onoda
发明人： Shigeo Nishida , Shojiro Kawakami , Yoichi Ohtaka , Seiichi Onoda
CPC分类号： G02B6/03627
摘要： An optical waveguide for optical communication transmitting light wave energy in a single mode composed of a core of a first transparent dielectric material and successive layers of a second and a third transparent dieletric material coaxially covering the core, the refractive index of the first dielectric material being higher than that of the third dielectric material and the refractive index of the second dielectric material being lower than that of the third dielectric material.
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公开(公告)号：US3997241A
公开(公告)日：1976-12-14
申请号：US619518
申请日：1975-10-03
申请人： Shigeo Nishida , Shojiro Kawakami , Yoichi Ohtaka , Seiichi Onoda
发明人： Shigeo Nishida , Shojiro Kawakami , Yoichi Ohtaka , Seiichi Onoda
CPC分类号： G02B6/03627 , G02B6/10 , G02B6/02214
摘要： An optical waveguide for optical communication transmitting light wave energy in a single mode composed of a core of a first transparent dielectric material and successive layers of a second and a third transparent dielectric material coaxially covering the core, the refractive index of the first dielectric material being higher than that of the third dielectric material and the refractive index of the second dielectric material being lower than that of the third dielectric material.
摘要翻译： 一种用于光通信的光波导，其以由第一透明介电材料的芯和同轴覆盖所述芯的第二和第三透明电介质材料的连续层组成的单一模式传输光波能，所述第一介电材料的折射率为 高于第三介电材料的折射率，并且第二介电材料的折射率低于第三介电材料的折射率。
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公开(公告)号：US08045043B2
公开(公告)日：2011-10-25
申请号：US12159489
申请日：2006-12-27
申请人： Shojiro Kawakami , Tetsuya Ogata
发明人： Shojiro Kawakami , Tetsuya Ogata
IPC分类号： H04N5/225
CPC分类号： G02B27/288 , G02B27/286
摘要： It is an object of the present invention to provide an optical module which can extract only light components satisfying predetermined conditions, and an imaging device comprising the optical module. The optical module (10) comprises a first plate-like optical element (4) formed with a ¼ wavelength plate portion (1) and a −¼ wavelength plate portion (2) alternately jointed together at a joint portion (3), and a second plate-like optical element (8) formed with a ¼ wavelength plate portion (5) and a −¼ wavelength plate portion (6) alternately jointed together at a joint portion (7), wherein the first plate-like optical element (4) and the second plate-like optical element (8) are parallel, and the ¼ wavelength plate portion (1) of the first plate-like optical element (4) and the −¼ wavelength plate portion (6) of the second plate-like optical element (8) are overlapped across a gap (9).
摘要翻译： 本发明的目的是提供一种只能提取满足预定条件的光成分的光学模块和包括该光学模块的成像装置。 光学模块（10）包括形成有1/4波长板部分（1）的第一板状光学元件（4）和在接合部分（3）交替地接合在一起的1/4波片部分（2），并且 第二板状光学元件（8），其形成有在接合部（7）交替接合的1/4波片部（5）和1/4波片部（6），其中，第一板状光学元件（4） ）和第二板状光学元件（8）平行，并且第一板状光学元件（4）的1/4波片部分（1）和第二板状光学元件的1/4波片部分（6） （8）重叠在间隙（9）上。
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公开(公告)号：US06317554B1
公开(公告)日：2001-11-13
申请号：US09369243
申请日：1999-08-05
申请人： Hideo Kosaka , Shojiro Kawakami
发明人： Hideo Kosaka , Shojiro Kawakami
IPC分类号： G02B610
CPC分类号： B82Y20/00 , G02B6/1225
摘要： Disclosed herein is a self-waveguide optical circuit for forming optical paths by propagating rays or electromagnetic waves comprising: photonic crystals having a dielectric constant periodic structure or a dielectric constant semi-periodic structure having a period substantially corresponding to a wavelength of propagation rays, and optical paths formed by establishing a crystal direction of the photonic crystal to level the dispersion surface of the photonic crystal for obtaining a bundle of parallel rays. In accordance with the present invention, elevation of characteristics such as miniaturization, high integration, high speed operation and transmission efficiency can be obtained because a bundle of parallel rays can be obtained without forming crooked parts having an excessive curvature radius.
摘要翻译： 本文公开了一种用于通过传播光线或电磁波形成光路的自波导光路，包括：具有介电常数周期结构的光子晶体或具有基本对应于传播射线波长的周期的介电常数半周期结构，以及 通过建立光子晶体的晶体方向以平衡光子晶体的分散表面以获得一束平行光线而形成的光路。 根据本发明，可以获得小型化，高集成度，高速运行和传输效率等特性的提升，因为可以获得平行光束而不形成具有过大曲率半径的弯曲部分。
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公开(公告)号：US07265834B2
公开(公告)日：2007-09-04
申请号：US10537314
申请日：2003-07-14
IPC分类号： G01J4/00
CPC分类号： G02B5/3041 , G02B5/3033 , G02B27/288
摘要： A thin polarizer array and a wavelength plate array that are composed of micro regions having different optical axis directions and wavelength characteristics and having a high extinction ratio and a low insertion loss, and a polarization analyzer using them. An array of micro periodic grooves is formed on a substrate, with the directions changed from one region to another. An alternating multilayer film formed by bias sputtering alternating a layer of high refractive index material such as Si or Ta2O5 and a layer of low refractive index material such as SiO2. By selecting a condition that each layer maintains its periodic projecting/recessed shape, an array of photonic crystal polarizer is formed. By mounting this array of photonic crystal polarizer in a photodetector array, a polarization analyzer that is small, has no movable part, has a small number of components, and enables high-precision measurement is constituted.
摘要翻译： 由具有不同的光轴方向和波长特性的微区域构成的具有高消光比和低插入损耗的微偏振器阵列和波长板阵列以及使用它们的偏振分析器。 在基板上形成微周期槽的阵列，其方向从一个区域改变到另一个区域。 通过偏置溅射交替形成的交替多层膜，其交替使用诸如Si或Ta 2 O 5的高折射率材料层和低折射率材料层，例如SiO 2， SUB> 2 。 通过选择每层保持其周期性突出/凹陷形状的条件，形成光子晶体偏振器的阵列。 通过将该光子晶体偏振片阵列安装在光电检测器阵列中，小型的不具有可动部分的偏振分析器具有少量的部件，并且能够构成高精度测量。
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公开(公告)号：US20070268490A1
公开(公告)日：2007-11-22
申请号：US10572285
申请日：2004-01-23
CPC分类号： G01N21/211 , G01J4/04
摘要： A small and high-speed polarization analysis device and ellipsometer having no driving section are provided by overlapping one polarizer array rendered by arranging a plurality of polarizer regions of mutually different optical axis directions in the form of stripes and one wavelength plate array rendered by arranging a plurality of wavelength plate regions of fixed retardation and mutually different optical axis directions in the form of stripes so that the respective stripes of the plurality of polarizer regions and of the plurality of wavelength plate regions intersect one another and by disposing a light-receiving element array so that the intensities of light that has passed through the matrix-like intersection parts can be individually measured. As a method of analyzing a two-dimensional intensity distribution pattern that is observed by the light-receiving element array of the polarization analysis device, either one of (or both of) the algorithms of a method that determines incident polarized waves by mathematically fitting pattern shapes or performing database matching or a method that performs a Fourier transform on pattern shapes and determines incident polarized waves from the frequency components is (are) used. Furthermore, if necessary, more accurate polarization analysis is also possible by adopting a signal processing method that removes signals from light-receiving element regions that receive unnecessary scattered light and diffracted light.
摘要翻译： 通过重叠一个偏振器阵列来提供不具有驱动部分的小型和高速偏振分析装置和椭偏仪，通过布置条纹形式的多个彼此不同的光轴方向的偏振器区域和通过布置一个 多个具有固定延迟的波长板区域和条纹形式的相互不同的光轴方向，使得多个偏振器区域和多个波长板区域中的各个条纹彼此相交，并且通过设置光接收元件阵列 能够分别测定通过矩阵状交叉部的光的强度。 作为分析由偏振分析装置的受光元件阵列观察到的二维强度分布图案的方法，可以通过数学拟合图案来确定入射极化波的方法的一种（或两者） 使用形状或执行数据库匹配或者对图案形状进行傅立叶变换并且从频率分量确定入射偏振波的方法。 此外，如果需要，通过采用从接收不必要的散射光和衍射光的受光元件区域去除信号的信号处理方法，也可以进行更精确的偏振分析。
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公开(公告)号：US07136217B2
公开(公告)日：2006-11-14
申请号：US10422156
申请日：2003-04-24
IPC分类号： G02F1/00
CPC分类号： G02B6/1225 , B82Y20/00 , G02B6/126 , G02B6/132
摘要： The optical element includes photonic crystals respectively having different optical characteristics. These photonic crystals are formed in a plurality of regions on a single substrate. The optical element has a structure in which two or more kinds of media are nearly periodically deposited on one-dimensionally periodical grooves. Further, the grooves are different in direction according to locations on the deposited surface. A variety of optical elements each having different dependencies on polarization according to locations can be obtained. That is, portions or zones different in optical characteristics can be integrated on a single substrate.
摘要翻译： 光学元件包括分别具有不同光学特性的光子晶体。 这些光子晶体形成在单个衬底上的多个区域中。 光学元件具有其中两种或更多种介质几乎周期性地沉积在一维周期性凹槽上的结构。 此外，根据沉积表面上的位置，凹槽的方向不同。 可以获得各种根据位置具有与极化不相关的各种光学元件。 也就是说，光学特性不同的部分或区域可以集成在单个基板上。
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公开(公告)号：US20100253827A1
公开(公告)日：2010-10-07
申请号：US12159489
申请日：2006-12-27
申请人： Shojiro Kawakami , Tetsuya Ogata
发明人： Shojiro Kawakami , Tetsuya Ogata
IPC分类号： H04N5/225
CPC分类号： G02B27/288 , G02B27/286
摘要： It is an object of the present invention to provide an optical module which can extract only light components satisfying predetermined conditions, and an imaging device comprising the optical module. The optical module (10) comprises a first plate-like optical element (4) formed with a ¼ wavelength plate portion (1) and a −¼ wavelength plate portion (2) alternately jointed together at a joint portion (3), and a second plate-like optical element (8) formed with a ¼ wavelength plate portion (5) and a −¼ wavelength plate portion (6) alternately jointed together at a joint portion (7), wherein the first plate-like optical element (4) and the second plate-like optical element (8) are parallel, and the ¼ wavelength plate portion (1) of the first plate-like optical element (4) and the −¼ wavelength plate portion (6) of the second plate-like optical element (8) are overlapped across a gap (9).
摘要翻译： 本发明的目的是提供一种只能提取满足预定条件的光成分的光学模块和包括该光学模块的成像装置。 光学模块（10）包括形成有1/4波长板部分（1）的第一板状光学元件（4）和在接合部分（3）交替地接合在一起的1/4波片部分（2），并且 第二板状光学元件（8），其形成有在接合部（7）交替接合的1/4波片部（5）和1/4波片部（6），其中，第一板状光学元件（4） ）和第二板状光学元件（8）平行，并且第一板状光学元件（4）的1/4波片部分（1）和第二板状光学元件的1/4波片部分（6） （8）重叠在间隙（9）上。
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公开(公告)号：US20060126066A1
公开(公告)日：2006-06-15
申请号：US10537314
申请日：2003-07-14
CPC分类号： G02B5/3041 , G02B5/3033 , G02B27/288
摘要： A thin polarizer array and a wavelength plate array that are composed of micro regions having different optical axis directions and wavelength characteristics and have a high extinction ratio and a low insertion loss, and a polarization analyzer using them are disclosed. An array of micro periodic grooves is formed on a substrate, with the directions changed from one region to another. An alternating multilayer film formed by alternating a layer of high refractive index material such as Si or Ta2O5 and a layer of low refractive index material such as SiO2 is formed by bias sputtering. By selecting a condition that each layer maintains its periodic projecting/recessed shape, an array of photonic crystal polarizer is formed. By mounting this array of photonic crystal polarizer in a photodetector array, a polarization analyzer that is small, has no movable part, is composed of a small number of components, and enables high-precision measurement is constituted.
摘要翻译： 公开了由具有不同光轴方向和波长特性的微区域构成的具有高消光比和低插入损耗的微偏振器阵列和波长板阵列，以及使用它们的偏振分析仪。 在基板上形成微周期槽的阵列，其方向从一个区域改变到另一个区域。 通过偏置溅射形成交替的多层膜，其通过交替使用诸如Si或Ta 2 O 5的高折射率材料层和低折射率材料层如SiO 2形成。 通过选择每层保持其周期性突出/凹陷形状的条件，形成光子晶体偏振器的阵列。 通过将这种光子晶体偏振片阵列安装在光电检测器阵列中，小型的偏振分析器由不少的部件构成，构成了高精度的测量。
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