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1. 发明授权

US5384636A External scatter removal system 失效
标题翻译：外部散射去除系统
公开(公告)号：US5384636A
公开(公告)日：1995-01-24
申请号：US629108
申请日：1990-12-12
申请人： Graham J. Martin , Leo K. Lam , Thomas J. Hutchings
发明人： Graham J. Martin , Leo K. Lam , Thomas J. Hutchings
IPC分类号： G01C19/66 , G01B9/02 , H01S3/083
CPC分类号： G01C19/662
摘要： Disclosed herein is an External Scatter Removal System for Ring Laser Gyroscopes (such as a Split Gain Multioscillator) comprising a prism mounted on an optoisolator, wherein light transmitted out at least one of the mirrors of the Gyroscope passes into the prism and detector system, while oppositely directed backscattered light from the prism components is not returned to the gyroscope frame's internal optical path, thereby limiting any appreciable backscatter from interfering with an accurate measurement of the rotation rate of the gyroscope.
摘要翻译：本文公开了一种用于环形激光陀螺仪的外部散射去除系统（例如分裂增益多体振荡器），其包括安装在光隔离器上的棱镜，其中透射出的至少一个陀螺仪的反射镜的光进入棱镜和检测器系统，同时来自棱镜部件的相反导向的后向散射光不会返回到陀螺仪框架的内部光路，从而限制任何可观的反向散射干扰陀螺仪的旋转速度的精确测量。

2. 发明授权

US5371591A Triaxial split-gain ring laser gyroscope 失效
标题翻译：三轴分频增益环激光陀螺仪
公开(公告)号：US5371591A
公开(公告)日：1994-12-06
申请号：US570839
申请日：1990-08-13
申请人： Graham J. Martin , Leo K. Lam
发明人： Graham J. Martin , Leo K. Lam
IPC分类号： G01C19/66 , H01S3/083 , G01B9/02
CPC分类号： G01C19/667 , H01S3/083
摘要： A triaxial multioscillator for operation in accordance with a mode of operation requiring the imposition of a substantially uniform axial magnetic field on the gain region of each lasing cavity. An integral frame of glass ceramic material has a rhombic dodecahedral shape and includes three closed lasing cavities, each formed of four straight segments. The cavities include three mutually parallel segments, one from each cavity, that are regularly spaced on a circle perpendicular to the axis of the frame. An internal cathode and six anodes are associated with the frame to provide gain in each of such three segments. The frame is positioned within a closed cylindrical element of soft iron composition by means of a fixture. The fixture positions magnets adjacent the top and bottom of the element to generate parallel lines of magnetic flux therein. The frame is positioned within the container in such a way that the cavity segments containing the three gain regions are aligned with the parallel lines of flux to produce the requisite axial fields in the three gain regions.
摘要翻译：一种用于根据操作模式操作的三轴多振荡器，其需要在每个激光腔的增益区上施加基本上均匀的轴向磁场。玻璃陶瓷材料的整体框架具有菱形十二面体形状，并且包括三个封闭的激光腔，每个腔由四个直段形成。空腔包括三个相互平行的段，一个来自每个腔，在与框架的轴线垂直的圆周上规则地间隔开。内部阴极和六个阳极与框架相关联，以在这三个段中的每一个中提供增益。框架通过固定装置位于软铁组合物的闭合圆柱形元件内。固定装置将邻近元件的顶部和底部的磁体定位成在其中产生平行的磁通线。框架以这样的方式定位在容器内，使得包含三个增益区域的空腔区段与平行的通量线对准，以在三个增益区域中产生必需的轴向场。

3. 发明授权

US5371589A Triaxial ring laser gyroscope with independent cavity length control 失效
标题翻译：具有独立腔长控制的三轴环激光陀螺仪
公开(公告)号：US5371589A
公开(公告)日：1994-12-06
申请号：US358947
申请日：1989-05-30
申请人： Graham J. Martin
发明人： Graham J. Martin
IPC分类号： G01C19/66 , H01S3/083 , G01B9/02
CPC分类号： H01S3/083 , G01C19/665
摘要： A monolithic triaxial ring laser gyroscope includes three orthogonal ring cavities, the optical path length of each of which is independently controllable. Three planar ring cavities are formed within a frame that is shaped into the form of a rhombic dodecahedron. A mirror is fixed to each of the twelve faces of the frame for directing the counter propagating light beams within the three orthogonal cavities. Anodes which communicate with the cavities through bore holes are fixed to predetermined surfaces of the frame while three cathodes are positioned at flattened portions of preselected vertices of the dodecahedron and located in such a way as to eliminate undesired bias resulting from Fresnel-Frizeau effects.
摘要翻译：单片三轴环激光陀螺仪包括三个正交的环形腔，其中每一个的光程长度可独立控制。在框架内形成三个平面的环形空腔，该框架成形为菱形十二面体的形式。镜子被固定到框架的十二个面中的每一个面上，用于将反向传播的光束引导到三个正交空腔内。通过钻孔与空腔连通的阳极被固定在框架的预定表面上，而三个阴极被定位在十二面体的预选顶点的平坦部分，并且以这样的方式定位，以消除由菲涅尔 - Frizeau效应产生的不期望的偏差。

4. 发明授权

US4825260A Apparatus and method using amplification cells for ring laser gyroscope cavity length control 失效
标题翻译：用于环形激光陀螺仪腔体长度控制的放大单元的装置和方法
公开(公告)号：US4825260A
公开(公告)日：1989-04-25
申请号：US17429
申请日：1987-02-20
申请人： Sami T. Hendow , Graham J. Martin , Sheridan W. Hammons
发明人： Sami T. Hendow , Graham J. Martin , Sheridan W. Hammons
IPC分类号： G01C19/66 , G01C19/64
CPC分类号： G01C19/665
摘要： An apparatus and method for path length control for a laser gyro using two external gain cells and the shifted gain spectra of two neon isotopes. The laser cavity is stabilized by detecting the difference in the amplification rate between the two gain cells that are traversed by two rays. Absorption cells may be used to replace the gain cells.
摘要翻译：一种用于使用两个外部增益单元的激光陀螺仪的路径长度控制的装置和方法以及两个氖同位素的偏移增益谱。通过检测由两条光线穿过的两个增益单元之间的放大率的差异来稳定激光腔。可以使用吸收单元来代替增益单元。

5. 发明授权

US4637255A Non-planar ring laser accelerometer 失效
标题翻译：非平面环激光加速度计
公开(公告)号：US4637255A
公开(公告)日：1987-01-20
申请号：US814878
申请日：1985-12-30
申请人： Graham J. Martin
发明人： Graham J. Martin
IPC分类号： G01P15/093 , G01P15/08
CPC分类号： G01P15/093
摘要： An instrument for measuring acceleration as a function of reciprocal mode splitting within a non-planar rising cavity. A glass block includes an internal non-planar cavity. The block includes orthogonal bending axes. A proofmass atop the block causes flexure about such axes upon imposition of acceleration force along a preselected sensitive axis. The resulting deformation results in detectable changes in the cavity aspect ratio that provide a measure of acceleration.
摘要翻译：一种用于在非平面上升腔内测量作为相互模式分裂的函数的加速度的仪器。玻璃块包括内部非平面空腔。该块包括正交弯曲轴。块上方的校样会沿着预选的敏感轴施加加速力，导致关于这些轴的挠曲。所产生的变形导致腔体纵横比的可检测变化，其提供加速度的量度。

6. 发明申请

US20130265583A1 FIBER OPTIC POSITION SENSING SYSTEM 审中-公开
标题翻译：光纤位置传感系统
公开(公告)号：US20130265583A1
公开(公告)日：2013-10-10
申请号：US13441272
申请日：2012-04-06
申请人： John E. Mansell , Milind Mahajan , Graham J. Martin
发明人： John E. Mansell , Milind Mahajan , Graham J. Martin
IPC分类号： G01B9/02 , G01B11/14
CPC分类号： G01B9/02049 , G01B9/02002 , G01B9/0201 , G01B9/02028 , G01B11/026 , G01B11/14 , G01B2290/35 , G01D5/266 , G01D5/268 , G01D5/34 , G01S7/4818 , G01S7/4865 , G01S7/4868 , G01S17/10
摘要： A fiber optic sensing system for determining the position of an object requires a light source, an optical fiber, a fiber optic splitter, a fiber tip lens, an optical detector and signal processing circuitry. Light emitted by the light source is conveyed via optical fiber and the splitter to the lens and onto an object, such that at least a portion of the light is reflected by the object and conveyed via fiber and the splitter to the detector. Signal processing circuitry coupled to the detector determines the position of the object with respect to the lens based on a characteristic of the reflected light. The system is suitably employed with a hydraulic accumulator having a piston, the position of which varies with the volume of fluid in the accumulator, with the system arranged to determine the position of the piston, from which the volume can be calculated.
摘要翻译：用于确定物体位置的光纤传感系统需要光源，光纤，光纤分路器，光纤末端透镜，光学检测器和信号处理电路。由光源发射的光通过光纤和分束器被传送到透镜和物体上，使得至少一部分光被物体反射并通过光纤和分离器传送到检测器。耦合到检测器的信号处理电路基于反射光的特性来确定物体相对于透镜的位置。该系统适用于具有活塞的液压蓄能器，该活塞的位置随蓄能器中的流体的体积而变化，系统被布置成确定活塞的位置，从该活塞可以计算体积。

7. 发明授权

US5080487A Ring laser gyroscope with geometrically induced bias 失效
标题翻译：环形激光陀螺与几何诱导偏差
公开(公告)号：US5080487A
公开(公告)日：1992-01-14
申请号：US928069
申请日：1986-11-06
申请人： Graham J. Martin
发明人： Graham J. Martin
IPC分类号： G01P9/00 , G01C19/64 , G01C19/66 , H01S3/083
CPC分类号： G01C19/667
摘要： An out of plane ring laser gyroscope comprises a frame and a cavity formed in the frame to provide a non-planar closed optical pattern. A gain medium produces two light beams propagating in opposite directions in the cavity. A magnetic device applies an axial magnetic field to the gain medium to allow only light of opposite circular polarizations to lase in opposite directions. The gain medium and resonant cavity alone will allow left and right circularly polarized modes to lase in both clockwise and anticlockwise directions simultaneously. The application of the axial magnetic field to the gain region shifts the center of the gain profile for the clockwise right circularly polarized and anticlockwise left circularly polarized beams with respect to the gain profile center for the anticlockwise right circularly polarized and clockwise left circularly polarized beams. The cavity length can then be adjusted so that lasing action in two of the four modes is suppressed leaving only modes of opposite polarization propagating in opposite directions. The out of plane geometry of the cavity forces these modes to resonate at greatly different frequencies and hence prevents frequency locking over a very large range of input rotation rates.
摘要翻译：平面外环形激光陀螺仪包括在框架中形成的框架和空腔以提供非平面闭合光学图案。增益介质产生在空腔中沿相反方向传播的两个光束。磁性装置向增益介质施加轴向磁场，以允许相反的圆偏振光仅在相反的方向上发光。单独的增益介质和谐振腔将允许左右圆偏振模式同时沿顺时针和逆时针方向发光。将轴向磁场施加到增益区域使得用于顺时针右圆偏振和逆时针左圆偏振光束的增益曲线的中心相对于逆时针右圆偏振和顺时针左圆偏振光束的增益分布中心偏移。然后可以调节腔长度，使得四种模式中的两种模式中的激光作用被抑制，仅留下相反极性的模式在相反方向上传播。空腔的平面外几何形状迫使这些模式以非常不同的频率共振，因此防止在非常大的输入旋转速率范围内的频率锁定。

8. 发明授权

US4836675A Apparatus and method for detecting rotation rate and direction of rotation and providing cavity length control in multioscillator ring laser gyroscopes 失效
标题翻译：用于检测旋转速度和旋转方向的设备和方法，并在多振荡环形激光陀螺仪中提供腔长度控制
公开(公告)号：US4836675A
公开(公告)日：1989-06-06
申请号：US67254
申请日：1987-06-29
申请人： Sami T. Hendow , Graham J. Martin
发明人： Sami T. Hendow , Graham J. Martin
IPC分类号： H01S3/083 , G01C19/66
CPC分类号： G01C19/667
摘要： A multioscillator ring laser gyroscope includes a frame that encloses a closed optical path in which four circularly polarized optical waves propagate. A combining optics system combining the waves to produce an interference pattern. A pair of photodetectors are placed in the interference pattern in half quadrature with respect to the interference pattern so that the detectors produce oscillatory output signals that are in quadrature with respect to each other. Signals indicative of the beat signal in the interference pattern are processed to determine the rotation rate, the direction of rotation and to provide a cavity length control signal.
摘要翻译：多振荡器环形激光陀螺仪包括围绕四个圆偏振光波传播的封闭光路的框架。组合光学系统以组合波形以产生干涉图案。相对于干涉图案，一对光电检测器以干涉图案被放置成半正交，使得检测器产生相对于彼此正交的振荡输出信号。处理表示干涉图案中的拍频信号的信号，以确定旋转速度，旋转方向，并提供空腔长度控制信号。

9. 发明授权

US07356216B1 Optical cross-connect 有权
标题翻译：光交叉连接
公开(公告)号：US07356216B1
公开(公告)日：2008-04-08
申请号：US11613489
申请日：2006-12-20
申请人： Graham J. Martin , Jian Ma , Chialun Tsai
发明人： Graham J. Martin , Jian Ma , Chialun Tsai
IPC分类号： G02B6/26
CPC分类号： G02B6/3518 , G02B6/32 , G02B6/3546 , G02B6/3636 , G02B6/3652
摘要： An optical cross-connect is provided. The optical cross-connect includes a glass wedge, having a front end and a back end, positioned between a first one-dimensional collimator array and a second one-dimensional collimator array, where the first collimator array includes a first V-groove array having a first set of etched grooves for placing a first group of optical fibers and the second collimator array includes a second V-groove array having a second set of etched grooves for placing a second group of optical fibers; and a MEMS substrate attached at a fixed distance to the front end of the glass wedge, where the front end is covered in a reflective coating for reflecting light from the first and second collimator arrays onto the MEMS substrate.
摘要翻译：提供光交叉连接。光学交叉连接器包括具有位于第一一维准直器阵列和第二一维准直器阵列之间的前端和后端的玻璃楔，其中第一准直器阵列包括第一V形槽阵列，其具有用于放置第一组光纤的第一组蚀刻槽，并且所述第二准直器阵列包括具有用于放置第二组光纤的第二组蚀刻槽的第二V形槽阵列; 以及安装在玻璃楔的前端固定距离的MEMS基板，其中前端被反射涂层覆盖，用于将来自第一和第二准直器阵列的光反射到MEMS基板上。

10. 发明授权

US4616930A Optically biased twin ring laser gyroscope 失效
标题翻译：光学偏置双环激光陀螺仪
公开(公告)号：US4616930A
公开(公告)日：1986-10-14
申请号：US486662
申请日：1983-04-20
申请人： Graham J. Martin
发明人： Graham J. Martin
IPC分类号： G01C19/64 , G01C19/66 , G01P9/00 , H01S3/083
CPC分类号： G01C19/661 , H01S3/083
摘要： An improved ring laser rotational rate sensor includes a pair of lasing cavities, each of which is comprised of a non-planar arrangement of four cavity segments. Common gain and biasing media are associated with closely-spaced segments of the two cavities. The non-planar cavity geometry supports only circularly optically polarized lasing modes thereby requiring no intracavity elements for optical biasing and eliminating the need for dithering of mirrors to control optical path length.
摘要翻译：改进的环形激光转速传感器包括一对激光腔，每个都由四个空腔段的非平面布置组成。共同的增益和偏置介质与两个空腔的紧密间隔的部分相关联。非平面腔几何仅支持圆形光学偏振激光模式，从而不需要用于光学偏置的腔内元件，并且不需要镜子的抖动来控制光程长度。

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