公开(公告)号：US4929042A

公开(公告)日：1990-05-29

申请号：US127020

申请日：1987-11-27

申请人： Masami Hatori ,  Nobuharu Nozaki ,  Kozi Kamiyama

发明人： Masami Hatori ,  Nobuharu Nozaki ,  Kozi Kamiyama

IPC分类号： G02F1/335

CPC分类号： G02F1/335

摘要： An optical deflecting apparatus comprises a first generator for generating a first surface acoustic wave which advances to intersect an optical path of a guided optical wave advancing inside of an optical waveguide and diffracts and deflects the guided optical wave, and a second generator for generating a second surface acoustic wave which advances to intersect the optical path of the guided and diffracted optical wave and diffracts and deflects the guided and diffracted optical wave in a direction that amplifies the deflection caused by the diffraction. The first and second surface acoustic wave generators are formed to continuously change the frequencies of the first and second surface acoustic waves and the directions of advance thereof while satisfying the conditions of k1+k1=k2 and k2+k2=k3 wherein k1 and k2 respectively denote wave vectors of the guided optical wave before and after being diffracted by the first surface acoustic wave, k3 denotes the wave vector of the guided optical wave after being diffracted by the second surface acoustic wave, and k1 and k2 respectively denote wave vectors of the first and second surface acoustic waves.

公开(公告)号：US4838638A

公开(公告)日：1989-06-13

申请号：US156517

申请日：1988-02-16

申请人： Kozi Kamiyama ,  Yoji Okazaki

发明人： Kozi Kamiyama ,  Yoji Okazaki

IPC分类号： G02F1/37 ,  G02F1/377 ,  G02F1/383

CPC分类号： G02F1/377 ,  G02F1/383 ,  G02F2001/374

摘要： An optical wavelength conversion device is composed of a nonlinear optical material, and a first cladding layer having a refractive index lower than the refractive index of the nonlinear optical material and covering the nonlinear optical material, thereby to convert a fundamental wave entering the optical wavelength conversion device to a second harmonic, to guide the second harmonic through the first cladding layer, and to radiate the second harmonic. A second cladding layer formed of a material having a refractive index lower than the refractive index of the first cladding layer is provided outside of the first cladding layer, thereby to protect the first cladding layer.

摘要翻译： 光波长转换装置由非线性光学材料和折射率低于非线性光学材料的折射率并覆盖非线性光学材料的第一包层组成，从而转换进入光波长转换的基波 将二次谐波引导到二次谐波，以引导二次谐波通过第一覆层，并辐射二次谐波。 由第一包层的折射率低于折射率的材料形成的第二包层设置在第一包层的外侧，从而保护第一包层。

公开(公告)号：US4797867A

公开(公告)日：1989-01-10

申请号：US919015

申请日：1986-10-15

申请人： Hiroshi Sunagawa ,  Kozi Kamiyama

发明人： Hiroshi Sunagawa ,  Kozi Kamiyama

IPC分类号： G02B6/12 ,  G02F1/335 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B7/095

CPC分类号： G11B7/0901 ,  G11B7/1245

摘要： A pick-up head for use with an optical information storage disk includes an optical waveguide, a light source, a waveguide lens, a focusing grating coupler, and a light detector. Wave light generated by the light source and propagated via the wave guide lens through the optical waveguide is deflected by a surface elastic wave generated by an inter-digital transducer. The inter-digital transducer is controlled by a tracking error signal to vary the frequency of the surface elastic wave to change the deflection angle of the wave light in order to eliminate any tracking error to which a light spot on the optical disk is subjected. Focusing control may be effected by a conventional focusing control mechanism or a bimorph driven by a focusing error signal.

摘要翻译： 用于光学信息存储盘的拾取头包括光波导，光源，波导透镜，聚焦光栅耦合器和光检测器。 由光源产生并通过波导透镜通过光波导传播的波光被由数字间换能器产生的表面弹性波偏转。 数字式换能器由跟踪误差信号控制，以改变表面弹性波的频率以改变波光的偏转角，以消除光盘上的光点所经受的任何跟踪误差。 聚焦控制可以由传统的聚焦控制机构或由聚焦误差信号驱动的双压电晶片来实现。

公开(公告)号：US4830448A

公开(公告)日：1989-05-16

申请号：US917058

申请日：1986-10-09

申请人： Yoji Okazaki ,  Hiroshi Sunagawa ,  Kozi Kamiyama

发明人： Yoji Okazaki ,  Hiroshi Sunagawa ,  Kozi Kamiyama

IPC分类号： G02F1/01 ,  G02F1/295 ,  G06K15/12 ,  H04N1/12

CPC分类号： H04N1/1275 ,  G02F1/0147 ,  G02F1/295 ,  G06K15/1285 ,  H04N1/12 ,  G02F2201/302

摘要： A light modulator comprises a stack of a wave guide layer and an adjacent layer normally exhibiting a refractive index smaller than that of the wave guide layer, at least one of these layers being formed of a material whose refractive index changes by application of energy. An energy applicator is provided at least in one of these layers, and a dielectric grating is positioned at the surface of the adjacent layer over a section where energy is applied by the energy applicator. A drive circuit is provided for energizing the energy applicator and causing a change in refractive index to arise in the wave guide layer and/or the adjacent layer so that a wave guided inside of the wave guide layer is radiated out of the stack by interaction with the dielectric grating. In a wave guide device, the wave guide layer is formed of a thermo-optic material in which the thermal coefficient of refractive index is zero or negative, and the adjacent layer is formed of a thermo-optic material exhibiting a positive thermal coefficient of refractive index.

摘要翻译： 光调制器包括一个波导层和通常具有比波导层的折射率小的折射率的相邻层的叠层，这些层中的至少一个由折射率通过施加能量而改变的材料形成。 至少在这些层之一中提供能量施加器，并且电介质光栅位于相邻层的表面上，在能量施加器施加能量的部分上。 提供驱动电路用于对能量施加器进行激励，并引起波导层和/或相邻层中出现的折射率变化，使得引导波导层内的波浪通过与 电介质光栅。 在波导装置中，波导层由折射率的热系数为零或负的热光材料形成，相邻的层由表现出正的热折射系数的热光材料形成 指数。

公开(公告)号：US4830447A

公开(公告)日：1989-05-16

申请号：US154709

申请日：1988-02-11

申请人： Kozi Kamiyama ,  Yoji Okazaki ,  Masaki Okazaki ,  Seiiti Kubodera ,  Syozo Takeuchi

发明人： Kozi Kamiyama ,  Yoji Okazaki ,  Masaki Okazaki ,  Seiiti Kubodera ,  Syozo Takeuchi

IPC分类号： G02F1/377 ,  G02F1/383

CPC分类号： G02F1/377 ,  G02F1/383

摘要： An optical wavelength conversion device is composed of an organic nonlinear optical material, and a cladding layer having a refractive index lower than the refractive index of the organic nonlinear optical material and covering the organic nonlinear optical material, thereby to convert a fundamental wave entering the optical wavelength conversion device to a second harmonic, and to radiate the second harmonic. At least one of device edge faces including edge faces of the organic nonlinear optical material is provided with a shielding layer for shielding the device edge face from ambient atmosphere, thereby to prevent the organic nonlinear optical material from sublimation and deterioration.

摘要翻译： 光波长转换装置由有机非线性光学材料和折射率低于有机非线性光学材料的折射率并覆盖有机非线性光学材料的包覆层组成，从而转换进入光学的基波 波长转换装置到二次谐波，并且辐射二次谐波。 包括有机非线性光学材料的边缘面的器件边缘面中的至少一个设置有用于屏蔽器件边缘面与环境大气的屏蔽层，从而防止有机非线性光学材料升华和劣化。

公开(公告)号：US4820011A

公开(公告)日：1989-04-11

申请号：US70442

申请日：1987-07-07

申请人： Shinsuke Umegaki ,  Yoji Okazaki ,  Kozi Kamiyama

发明人： Shinsuke Umegaki ,  Yoji Okazaki ,  Kozi Kamiyama

IPC分类号： G02F1/37 ,  G02F1/377 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02F1/377 ,  G02F2001/374

摘要： An optical wavelength conversion device is constituted by a pair of substrates disposed facing each other, and an optical waveguide formed of a nonlinear optical material and disposed between the substrates, thereby to convert a fundamental wave entering the optical wavelength conversion device formed to a second harmonic which is phase matched by Cherenkov radiation. At least one of the substrates is provided with a grating for entry of the fundamental wave, which is formed on a surface contacting the optical waveguide, and/or with a grating for radiation of the second harmonic, which is formed on a surface opposite to the surface contacting the optical waveguide. The optical wavelength conversion device is made by forming grooves on the substrates, filling a slight space between the substrates with a crystallizable organic nonlinear optical material, and gradually crystallizing the optical material.

摘要翻译： 光波长转换装置由彼此相对配置的一对基板和由非线性光学材料形成并设置在基板之间的光波导构成，从而将进入形成为二次谐波的光波长转换装置的基波 这是切伦科夫辐射的相位匹配。 至少一个基板设置有用于进入基波的光栅，该光栅形成在与光波导接触的表面上，和/或与用于二次谐波辐射的光栅形成，该光栅形成在与 表面接触光波导。 通过在基板上形成槽，用可结晶的有机非线性光学材料填充基板之间的微小空间，并使光学材料逐渐结晶来制造光波长转换元件。

公开(公告)号：US4758062A

公开(公告)日：1988-07-19

申请号：US849450

申请日：1986-04-08

申请人： Hiroshi Sunagawa ,  Jin Murayama ,  Nobuharu Nozaki ,  Yoji Okazaki ,  Kozi Kamiyama ,  Chiaki Goto ,  Toshio Iijima

发明人： Hiroshi Sunagawa ,  Jin Murayama ,  Nobuharu Nozaki ,  Yoji Okazaki ,  Kozi Kamiyama ,  Chiaki Goto ,  Toshio Iijima

IPC分类号： G02B6/24 ,  G02B6/34 ,  G02B6/42 ,  G02F1/01 ,  G02F1/295 ,  G02F1/335 ,  G06K15/12 ,  H04N1/12 ,  H04N1/193

CPC分类号： H04N1/1275 ,  G02B6/243 ,  G02B6/34 ,  G02B6/42 ,  G02F1/0147 ,  G02F1/295 ,  G02F1/335 ,  G06K15/1242 ,  G06K15/1252 ,  G06K15/1285 ,  H04N1/12 ,  H04N1/193 ,  G02F2201/302

摘要： A light beam scanning system comprises a stack of a wave guide layer and an adjacent layer normally exhibiting a refractive index smaller than that of the wave guide layer, the wave guide layer and/or the adjacent layer being made of a material whose refractive index changes by the application of energy. Many energy application devices are positioned at the wave guide layer and/or the adjacent layer along an optical path of wave guided inside of the wave guide layer. Dielectric gratings are positioned on the adjacent layer so as to correspond to sections where energy is applied. A drive circuit is provided for sequentially and selectively energizing the energy application devices, and changing the refractive index of the wave guide layer and/or the adjacent layer so that the guided wave is radiated out of the stack by interaction with the dielectric gratings at the sections where energy is applied.

摘要翻译： 光束扫描系统包括波导层和通常呈现比波导层的折射率小的折射率的相邻层的叠层，波导层和/或相邻层由折射率变化的材料制成 通过应用能源。 许多能量施加装置沿着在波导层内引导的波导的光路位于波导层和/或相邻层。 电介质光栅位于相邻层上，以对应于施加能量的部分。 提供了驱动电路，用于依次和选择性地激励能量施加装置，以及改变波导层和/或相邻层的折射率，使得导波通过与介质光栅相互作用而被辐射出堆叠 施加能量的部分。