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1.发明授权System to determine environmental pressure and birefringent-biased cladded optical sensor for use therein 失效用于确定环境压力的系统和用于其中的双折射偏置的包层光学传感器
公开(公告)号：US5589931A
公开(公告)日：1996-12-31
申请号：US406331
申请日：1995-03-17
申请人： William R. Rapoport , Janpu Hou
发明人： William R. Rapoport , Janpu Hou
摘要： A cladded birefringent pressure sensor for use in a pressure-sensing system. The sensor is a single composite plate consisting of two plates each with different indices of refraction. One surface of the sensor is exposed to the environmental pressure under measurement. A collimated broad band light source is transmitted via a fiber optic cable, a polarizer and a birefringent bias element which transmits a wavelength/polarization component of light through the sensor. An external force applied to the sensor adds a stress-induced component to the polarized lightwave. The lightwave exits the sensor and is captured by a second polarizer producing a modulated light spectrum. A focusing element collects the light and transmits it down another fiber optic cable. The cable transmits the light to an opto-electronic interface where the fringe pattern is extracted and a computer compatible signal is generated for a CPU. The CPU performs a Fourier transform on the fringe pattern, where the phase term for a selected frequency is the measure of the externally applied pressure on the sensor.
摘要翻译： 用于压力感测系统的包层双折射压力传感器。 传感器是由两个板组成的单个复合板，每个板具有不同的折射率。 传感器的一个表面暴露于测量下的环境压力。 准直的宽带光源通过光纤电缆，偏振器和透射通过传感器的光的波长/偏振分量的双折射偏置元件传输。 施加到传感器的外力对偏振光波增加应力诱导分量。 光波出射传感器，并由第二偏振器捕获，产生调制光谱。 聚焦元件收集光并将其传输到另一根光纤电缆上。 电缆将光线传输到提取条纹图案的光电接口，并为CPU生成计算机兼容信号。 CPU对条纹图案执行傅里叶变换，其中所选频率的相位项是传感器上外部施加的压力的量度。
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公开(公告)号：US5694205A
公开(公告)日：1997-12-02
申请号：US545455
申请日：1995-10-19
IPC分类号： G01L1/24
CPC分类号： G01L1/241
摘要： A birefringent bias is provided to an optical sensor by the addition of one or more single birefringent elements where the total birefringence-length product remains within the accepted tolerances of current devices. The bias provided by two or more elements is such that where each element has a birefringence, a dB/dT and a coefficient of thermal expansion term, the elements are arranged in tandem so that the combined birefringence terms equal the required birefringence bias and the dB/dT and coefficient of thermal expansion terms effectively cancel.
摘要翻译： 通过添加一个或多个单双折射元件向光学传感器提供双折射偏置，其中总双折射长度乘积保持在当前器件的公认误差范围内。 由两个或更多个元件提供的偏压使得当每个元件具有双折射，dB / dT和热膨胀项的系数时，元件串联布置，使得组合双折射项等于所需的双折射偏差和dB / dT和热膨胀系数有效地消除。
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公开(公告)号：US5561522A
公开(公告)日：1996-10-01
申请号：US411186
申请日：1995-03-27
申请人： William R. Rapoport , Janpu Hou
发明人： William R. Rapoport , Janpu Hou
CPC分类号： G01L19/0092 , G01D5/344
摘要： An integrated optical temperature and pressure sensor system that is birefringently biased. A broad band light source is transmitted via a fiber optic cable having a splitter, a collimator and a polarizer to a first birefringent bias element. The first birefringent element has a partially reflective coating to reflect back a portion of the light signal to the first polarizer to yield a first reflective modulated light that consists of temperature information irrespective of external forces. The non-reflected light continues to a second birefringent bias element. The second birefringent crystal provides additional birefringent bias to the light wave before the light wave enters an isotropic pressure sensor media. An external pressure applied to the sensor causes the light to experience stress-induced birefringence. The sensor comprises a highly reflective surface which redirects the light back through the sensor, both bias crystals and the polarizer to yield a second reflective modulated light spectrum. The splitter which directs a combined light spectrum comprising a portion of each reflected light spectrum to an opto-electronic interface where the intensity vs. wavelength signal is extracted by a CPU. The CPU performs a Fourier transform on the signal to reveal a first phase term at a selected frequency that relates to the temperature of the system and a second phase term at a different selected frequency that relates to the temperature of the system and the externally applied pressure on the sensor. Subtracting out the temperature term from the temperature and pressure term provides the pressure value.
摘要翻译： 双折射偏压的集成光学温度和压力传感器系统。 宽带光源通过具有分离器，准直器和偏振器的光纤电缆传输到第一双折射偏置元件。 第一双折射元件具有部分反射涂层，以将光信号的一部分反射回第一偏振器，以产生由温度信息组成的第一反射调制光，而不管外力如何。 非反射光继续到第二双折射偏压元件。 第二双折射晶体在光波进入各向同性压力传感器介质之前，为光波提供额外的双折射偏压。 施加到传感器的外部压力导致光经历应力引起的双折射。 传感器包括高反射表面，其将光重定向通过传感器，偏置晶体和偏振器两者，以产生第二反射调制光谱。 分配器将包括每个反射光谱的一部分的组合光谱引导到光电接口，其中强度对波长信号由CPU提取。 CPU对信号进行傅里叶变换，以与系统的温度相关的选定频率显示第一相位项，并以与系统的温度和外部施加的压力相关的不同选定频率显示第二相位 在传感器上。 从温度和压力项中减去温度项提供压力值。
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公开(公告)号：US5739931A
公开(公告)日：1998-04-14
申请号：US691072
申请日：1996-08-01
CPC分类号： G02B6/0053 , F21V5/02 , F21Y2103/00
摘要： An optical illumination system comprising a waveguide that accepts light generated by a diffuse light source and transmits the light via total internal reflection. Attached on one face of the waveguide is an array of microprisms, with each microprism having an light input surface parallel to a light output surface and at least two sidewalls tilted at an angle from the direction normal to the surface of the waveguide such that light escapes from the waveguide, reflects off the tilted sidewalls and emerges from the microprism as a spatially directed light source. An array of microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source. The optical illumination system is advantageous for any application that requires a non diffuse or substantailly collimated that is both energy efficient and contained in a low profile assembly.
摘要翻译： 一种光学照明系统，包括：波导，其接收由漫射光源产生的光，并通过全内反射传输光。 附着在波导的一个面上的是微棱镜阵列，其中每个微棱镜具有平行于光输出表面的光输入表面和至少两个侧向从垂直于波导表面的方向倾斜的角度，使得光逸出 从波导反射离开倾斜的侧壁并从微棱镜作为空间定向光源出射。 微透镜阵列可以被定位成接受微棱镜的输出，使得从微透镜出射的光是基本准直的光源。 光学照明系统对于需要非扩散或基本准直的任何应用是有利的，其既能量效率又包含在低轮廓组件中。
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公开(公告)号：US5289720A
公开(公告)日：1994-03-01
申请号：US915443
申请日：1992-07-17
申请人： Devlin Gualtieri , Herman VandeVaart , Stephen M. Emo , Janpu Hou
发明人： Devlin Gualtieri , Herman VandeVaart , Stephen M. Emo , Janpu Hou
CPC分类号： G01L11/025
摘要： A sensor for use in an optic system to detect current conditions in an environment. The sensor has a crystal member with a first waveguide extending from a top surface and a second waveguide extending from a bottom surface of a core member. Polarized light waves from a source are simultaneously communicated to the first and second waveguides. A first pressure is communicated to the top surface of the crystal member and an unknown pressure corresponding to the pressure of the environment is communicated to the bottom surface of the crystal member. The first pressure and the unknown pressure develop a pressure differential which acts on the crystal member to deform the first and second waveguides. The deformation of the first and second waveguides modifies the polarized light waves to create first and second output waves which are communicated to an optical interface where differences therebetween are extracted. The differences are analyzed by a computer to identify the current pressure and temperature of the environment.
摘要翻译： 用于光学系统中以检测环境中的当前状况的传感器。 传感器具有晶体构件，其具有从顶表面延伸的第一波导和从芯构件的底表面延伸的第二波导。 来自源极的偏振光波同时传送到第一和第二波导。 第一压力传递到晶体构件的顶表面，并且与环境压力相对应的未知压力传递到晶体构件的底表面。 第一压力和未知压力产生作用在晶体构件上以使第一和第二波导变形的压力差。 第一和第二波导的变形改变了偏振光波，以产生第一和第二输出波，该第一和第二输出波被传送到光学接口，其中提取出差异。 计算机分析差异以识别当前的环境压力和温度。
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公开(公告)号：US5839823A
公开(公告)日：1998-11-24
申请号：US622131
申请日：1996-03-26
CPC分类号： F21V5/002 , F21V11/06 , F21V7/0091 , G02F1/133605 , F21V11/14 , F21V17/101 , F21Y2101/00 , F21Y2103/00 , F21Y2103/37 , F21Y2113/00 , G02F2001/133507 , G02F2001/133607
摘要： The light output of a back-coupled illumination system is improved by recycling reflected and misdirected light rays. A reflector at the light source and an array of microprisms having reflective elements therebetween efficiently redirect errant light rays to increase the total available light output and improve efficiency. Both specular and diffuse reflective materials may be used in combination to enhance light output.
摘要翻译： 后耦合照明系统的光输出通过反射和误导的光线的回收而得到改善。 在光源处的反射器和具有反射元件的微棱镜阵列之间有效地重新引导错误的光线以增加总的可用光输出并提高效率。 可以组合使用镜面反射材料和漫反射材料以增强光输出。
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公开(公告)号：US5175787A
公开(公告)日：1992-12-29
申请号：US797009
申请日：1991-11-25
摘要： This invention provides birefringent optical waveguide structures of crystalline aluminum garnet of a high refractive index which are clad with crystalline aluminum garnet of a lower refractive index. Due to predetermined lattice mismatch between garnet substrate and cladding layer, strain is induced which causes a stress with resultant birefringence in the waveguide layer. When linearly polarized light enters such stressed waveguide in certain orientations, the linear polarization will be preserved by the stress-induced birefringence. These birefringent clad waveguides can be in the form of slabs, channels, ribs, or any of the typical optical waveguide structures. They are useful at high temperature.
摘要翻译： 本发明提供了具有较低折射率的结晶铝石榴石包覆的具有高折射率的结晶铝石榴石的双折射光波导结构。 由于石榴石基体和包覆层之间的预定晶格失配，引起应变，导致在波导层中产生双折射的应力。 当线性偏振光在某些取向进入这种应力波导时，线偏振将由应力引起的双折射保持。 这些双折射包层波导可以是板，通道，肋或任何典型的光波导结构的形式。 它们在高温下很有用。
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公开(公告)号：US07985026B1
公开(公告)日：2011-07-26
申请号：US12775840
申请日：2010-05-07
申请人： Song Fure Lin , Cheng Lih Liu , Vivian Kung , Janpu Hou , Pinsung Wang , Wally Hua , Archer Shu
发明人： Song Fure Lin , Cheng Lih Liu , Vivian Kung , Janpu Hou , Pinsung Wang , Wally Hua , Archer Shu
CPC分类号： G02B6/32 , G02B6/3853 , G02B6/3867 , G02B6/3882 , G02B6/3885
摘要： A guiding connector for optical fiber extension has a positioning section in the accommodating hole to receive a optical fiber and has a ventilative recess defined on one side to communicate with the positioning section of the accommodating hole. The positioning section adjacent to the ventilative recess achieves a ventilative portion to discharge gas inside the positioning section so that optical fibers are assembled and processed precisely and rapidly.
摘要翻译： 用于光纤延伸的引导连接器在容纳孔中具有接收光纤的定位部分，并且具有限定在一侧的通气凹部以与容纳孔的定位部分连通。 与通气凹槽相邻的定位部分实现了一个通风部分，用于排出定位部分内的气体，使得光纤被精确而快速地组装和加工。
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公开(公告)号：US5428468A
公开(公告)日：1995-06-27
申请号：US242525
申请日：1994-05-13
IPC分类号： F21V5/02 , F21V8/00 , G02B6/00 , G02F1/1335
CPC分类号： G02B6/0053 , F21V5/02 , F21Y2103/00
摘要： An optical illumination system comprising a waveguide that accepts light generated by a diffuse light source and transmits the light via total internal reflection. Attached on one face of the waveguide is an array of microprisms, with each microprism having an light input surface parallel to a light output surface and at least two sidewalls tilted at an angle from the direction normal to the surface of the waveguide such that light escapes from the waveguide, reflects off the tilted sidewalls and emerges from the microprism as a spatially directed light source. An array of microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source. The optical illumination system is advantageous for any application that requires a non diffuse or substantially collimated that is both energy efficient and contained in a low profile assembly.
摘要翻译： 一种光学照明系统，包括：波导，其接收由漫射光源产生的光，并通过全内反射传输光。 附着在波导的一个面上的是微棱镜阵列，其中每个微棱镜具有平行于光输出表面的光输入表面和至少两个侧向从垂直于波导表面的方向倾斜的角度，使得光逸出 从波导反射离开倾斜的侧壁并从微棱镜作为空间定向光源出射。 微透镜阵列可以被定位成接受微棱镜的输出，使得从微透镜出射的光是基本准直的光源。 光学照明系统对于需要非扩散或基本准直的任何应用都是有利的，其既能量效率又包含在低轮廓组件中。
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10.发明授权Fringe pattern analysis of a birefringent modified spectrum to determine environmental temperature 失效双折射修正光谱的边缘图案分析，以确定环境温度
公开(公告)号：US5255068A
公开(公告)日：1993-10-19
申请号：US796743
申请日：1991-11-25
申请人： Stephen M. Emo , Devlin M. Gualtieri , Janpu Hou , Terrance R. Kinney , Robert C. Morris , Herman van de Vaart
发明人： Stephen M. Emo , Devlin M. Gualtieri , Janpu Hou , Terrance R. Kinney , Robert C. Morris , Herman van de Vaart
CPC分类号： G01K11/12
摘要： A sensor for use in an optical temperature detector system having a birefringent element made of a single crystal metal oxide plate. A broad band light spectrum is transmitted through a first linear polarizing element to create a linearly polarized wave. The linearly polarized wave on passing through the single crystal metal oxide plate decomposes into first and second orthogonally polarized waves. Propagation of the linearly polarized wave through the birefringent single crystal metal oxide plate introduces a temperature dependent phase shift between the two waves. Thereafter, a second linear polarizer combines the first and second orthogonally polarized waves to create a modulated light spectrum having a fringe pattern, the fringe pattern being a function of the current temperature experienced by said birefringent element. A fiber optic cable connected to the second linear polarizing element carries the modulated light spectrum to an opto-electronic interface where the fringe pattern is extracted and a computer compatible signal is generated for a CPU to accurately indicate current environmental temperature conditions up to 1000.degree. C. experienced by the single crystal plate crystal in the birefringent element.
摘要翻译： 一种用于具有由单晶金属氧化物板制成的双折射元件的光学温度检测器系统的传感器。 宽带光谱通过第一线性偏振元件透射以产生线偏振波。 通过单晶金属氧化物板的线偏振波分解成第一和第二正交极化波。 通过双折射单晶金属氧化物板的线偏振波的传播在两个波之间引入温度相关的相移。 此后，第二线性偏振器组合第一和第二正交极化波，以产生具有条纹图案的调制光谱，该条纹图案是由所述双折射元件所经历的当前温度的函数。 连接到第二线性偏振元件的光纤电缆将调制的光谱传送到光电接口，其中提取条纹图案，并且为CPU产生计算机兼容信号以准确地指示当前最高1000℃的环境温度条件 由双折射元件中的单晶板晶体经历。
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