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公开(公告)号：JP2000055673A
公开(公告)日：2000-02-25
申请号：JP21807799
申请日：1999-07-30
Applicant: LITTON SYSTEMS INC
Inventor： GOLDNER ERIC LEE , MCLEAN THOMAS , AMAD KORDOVA , BEAN KENNETH , LANG ARTHUR D
IPC: G01C19/72
Abstract: PROBLEM TO BE SOLVED: To steadily operate an optical fiber gyro under various environmental conditions by mounting a pair of leads consisting of optical fibers on a detection coil by a specified method using an adhesive having a low elastic coefficient. SOLUTION: Leads 100a, 100b consisting of a pair of optical fibers different in length are arranged on the circumference 108 of a detection coil 102 so as to extend in different directions, and the long lead 100a is bent after extended along the circumference 108 and extended in the same direction as the short lead 100b. An adhesive material having a low elastic coefficient, for example, less than about 500 psi, is applied and hardened by UV irradiation to initially adhere the leads 100a, 100b to the coil 102, and the leads are wound adjacently around the circumference 108 in the same circumferential direction. Thereafter, the same adhesive material is applied to the whole outer surface 118 of the wound leads and hardened. The stress can be dispersed by the use of the adhesive material having low elastic coefficient, and the removal of the leads is also facilitated.
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公开(公告)号：JPH10185585A
公开(公告)日：1998-07-14
申请号：JP31826297
申请日：1997-11-19
Applicant: LITTON SYSTEMS INC
Inventor： CORDOVA AMADO , HOOVER ROBERT J , MCLEAN THOMAS , PATTERSON RALPH A , RAHN JOHN P
Abstract: PROBLEM TO BE SOLVED: To reduce gyro errors by releasing the stress between windings, by providing a means which reduces the thermal stress between a jacket and a burying material. SOLUTION: A surface 26 of the external jacket of the sensor coil composed of an optical fiber 28 is insulated from a surrounding burying material 30 by lubricant layers 32 and 34, which surround the wound layer of a fiber 29. Before starting the winding process of the sensor coil, the lubricant layer applying process, and the burying process of the sensor coil, the burying material 30 is applied to the surface of a supporting mandrel. After the material 30 is applied, the lubricant layer 34 is applied to the surface of the burying material 30 with a brush or spray and the layer of the fiber 28 is wound. After the fiber 28 is wound, the lubricant layer 32 is applied to the surface of the fiber 28 with a spray or brush, and the remaining layer of the burying material 36 is applied. Since the lubricant layers 34 and 32 are respectively provided immediately below and above the fiber 28, the fiber 28 is isolated from the layers 30 and 36 of the burying material 30 by the lubricants.
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公开(公告)号：WO0239170A3
公开(公告)日：2002-08-15
申请号：PCT/US0124380
申请日：2001-07-31
Applicant: LITTON SYSTEMS INC
Inventor： MCLEAN THOMAS , GOLDNER L ERIC
CPC classification number: G02B6/4454 , G01C19/722 , G02B6/4457
Abstract: Single and multi-level structures provide neatly organized, secure and easily repairable optical fiber connections between a pump source laser diode (54) and optical fiber coils represented by x-axis coil (22), y-axis coil (24) and z-axis coil (26). The structures employ specially organized trays (60, 62) for supporting such components as a 1x3 fiber optic coupler (46), an optical isolator (ISO) (48), a wavelength division multiplexer (WDM) (50), a doped fiber coil (52) and a tap coupler (56), and for holding and routing the optical fibers coupled to and between the components. Routing and secure holding of the fibers are facilitated by a built-in optical fiber holder (120), integral with tray (60), and individual optical fiber holders (140), which are stackable upon the built-in holder or upon each other. Each tray includes internal guides, such as a guide post (118), and segmented internal and external walls which provide optical fiber routing paths (96, 100, 160) and wall separations and/or openings (102, 104, 106, 132, 162) to permit ingress and/or egress of fibers or attachment points, similar to wall separations (145) in the stackable holders. Special resilient clam-shell holders (168, 172) safely hold the fragile components, and are incorporated within the trays to facilitate inter-structural and exterior coupling.
Abstract translation: 单级和多级结构在泵浦激光二极管（54）和由x轴线圈（22），y轴线圈（24）和z轴线圈（24）表示的光纤线圈之间提供整齐有序，安全且易于修复的光纤连接。 轴线圈（26）。 这些结构使用专门组织的托盘（60,62）来支撑诸如1×3光纤耦合器（46），光隔离器（ISO）（48），波分复用器（WDM）（50），掺杂光纤线圈 （52）和抽头耦合器（56），并且用于保持和路由耦合到所述组件和所述组件之间的光纤。 通过与托盘（60）成一体的内置光纤夹持器（120）以及可在内置夹持器上或彼此之上堆叠的单独光纤夹持器（140）来促进光纤的路由和固定保持 。 每个托盘包括诸如导柱（118）之类的内部导向件，以及提供光纤布线路径（96,100,160）和壁间隔和/或开口（102,104,106,132,134）的分段内壁和外壁。 162）以允许纤维或附接点的进入和/或离开，类似于可堆叠保持器中的壁分离（145）。 特殊的弹性蛤壳式支架（168,172）安全地固定易碎部件，并且被结合在托盘内以促进结构间和外部联接。
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公开(公告)号：WO0181865A2
公开(公告)日：2001-11-01
申请号：PCT/US0107857
申请日：2001-03-12
Applicant: LITTON SYSTEMS INC , MCLEAN THOMAS , GOLDNER ERIC , TWEEDY MICHAEL
Inventor： MCLEAN THOMAS , GOLDNER ERIC , TWEEDY MICHAEL
CPC classification number: G01C19/722
Abstract: Interconnection mechanisms for a laser gyroscape assembly (10) enable it to be rapidly and non-harmfully assembled and disassembled prior to a more durable interconnection, to facilitate repair and rework. The assembly includes a fiber optic spool (12), an inner shield (16) and an outer shield (18), which are formed of a stress-annealed magnetic and generally malleable material. The outer shield comprises upper and lower portions or parts (30, 32) whose first and second end segments (62, 66) respectively terminate the portions. Segments (66) has angled intersecting conical surfaces (74, 76) which engage surfaces (65, 67) on segment (62). Stops (80, 83) are formed respectively on the ends of the segments so that a distal end (68) contacts an interior ledge surface (80) of outer shield (34), thereby to limit the mutual engagement and to center the segment configuration interfit. The position and location of the stop allows the intersecting edges of surface (65, 67) of outer shield (34) to precisely contact revers taper segment (76) of surface (70) at a point beneath intersection (78) to ensure positive retention and mechanical locking of the upper and lower portions of outer shield (18). A plurality of notches (84) are positioned evently about the periphery of the lower portion of the outer shield at its intersection of the upper portion. Tangs (90, 92) of a tool (88) are inserted in seriatim within the spaces for gradual disassembly of the upper and lower outer shield portions without harm thereto. Inner shield (16) includes a cover (28) having two pairs of projections (130, 132) which can snap together, and a top annular segment (126) which is engageable with a centering projection (138) on end (26) of the spool. When the cover is secured to the spool, the top annular segment is flexed, but not deformed, to provide a spring bias and positive retention and, consequently, a solid and chatter-resistant engagement in a robust mechanical connection even under severe dynamic environments.
Abstract translation: 用于激光陀螺仪组件（10）的互连机构使得其能够在更耐用的互连之前快速且无害地组装和拆卸，以便于维修和返工。 组件包括光纤线轴（12），内屏蔽（16）和外屏蔽（18），其由应力退火的磁性和通常可延展的材料形成。 外屏蔽包括上部和下部或部分（30,32），其第一和第二端段（62,66）分别终止该部分。 部分（66）具有成角度相交的锥形表面（74,76），其接合段（62）上的表面（65,67）。 止动件（80,83）分别形成在所述段的端部上，使得远端（68）接触外屏蔽件（34）的内部凸缘表面（80），从而限制相互接合并使分段构造居中 相互配合。 止动件的位置和位置允许外屏蔽件（34）的表面（65,67）的交叉边缘在交叉点（78）下方的点处精确地接触表面（70）的反向锥形段（76），以确保正保留 以及外护罩（18）的上部和下部的机械锁定。 多个凹口（84）在外护罩的下部的周边处于其上部的交叉点处不定期地定位。 工具（88）的凸起（90,92）在空间内被插入，用于逐渐拆卸上下外部屏蔽部分而不对其造成伤害。 内护罩（16）包括具有两对可以卡合在一起的两对突起（130,132）的盖子（28），以及顶部环形段（126），其可与位于端部（26）上的定心突起（138）接合 线轴。 当盖被固定到卷轴上时，顶部环形部分弯曲但不变形，以提供弹簧偏置和正保持，并且因此即使在恶劣的动态环境下也可以实现牢固的和抗振动的接合，从而在坚固的机械连接中。
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公开(公告)号：CA2637481C
公开(公告)日：2014-09-16
申请号：CA2637481
申请日：2008-07-10
Applicant: LITTON SYSTEMS INC
Inventor： HAVELKA STEVEN E , SAXENA RAGINI , LOO THOMAS , MCLEAN THOMAS , BONG BAN S
Abstract: The invention relates generally to a modular display panel for enclosing Commercial-Off-The-Shelf ("COTS") display technologies. More particularly, the invention relates to a modular display panel for housing COTS light emitting or transmitting display subassemblies such as Liquid Crystal Displays (LCD) for military and other severe environments. The modular display assembly can comprise a base plate, a first frame, a window, a second, a circuit located, and a plurality of light emitting diodes mounted on the circuit board. The COTS light emitting or transmitting display subassembly can be connected to the second frame.
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Patent Agency Ranking
公开(公告)号：AU6155801A
公开(公告)日：2002-02-13
申请号：AU6155801
申请日：2001-05-14
Applicant: LITTON SYSTEMS INC
Inventor： HALL JOHN R , LIBMAN DAVID F , MCLEAN THOMAS
Abstract: A system and method for providing a rotation sensor for use in a fiber optic gyroscope including a centrally-located cylindrical hub having an improved slip interface positioned there around. The central hub has a substantially planar mounting flange extending from one of its ends, where the axis of rotation of the central hub is orthogonal to the plane of the mounting flange. A sensor coil comprising a plurality of layers of coaxial turns of optical fiber embedded in a potting material is formed around an outer surface of the interface. The interface allows the potted coil to expand or contract along the axial direction of the central hub due to thermal expansion while maintaining a constant thermal and mechanical connection between the interface and the potted coil. In this manner, the present invention maintains the integrity of the potted coil and its connection to the interface during thermal expansion of the potted coil, thus minimizing temperature-induced Shupe bias errors in the rotation sensor.
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公开(公告)号：ITRM920660D0
公开(公告)日：1992-09-11
申请号：ITRM920660
申请日：1992-09-11
Applicant: LITTON SYSTEMS INC
Inventor： MCLEAN THOMAS , MOORE S GREGORY
Abstract: The invention temperature controlled package comprises a case having sidewalls that form a closed perimeter; a cover; and a base having an input surface and an output surface. The sidewalls are integrally coupled to the base input surface to define an interior region. A heatsink has a top surface and a bottom surface. The heatsink bottom surface is attached to the input surface of a thermoelectric cooler. The bottom surface of the thermoelectric cooler is coupled to the base input surface of the case. The thermoelectric cooler responds to a control signal to move heat from the thermoelectric cooler input surface to the thermoelectric cooler output surface. In a first alternative embodiment, a laser diode coupled to the heat sink responds to an electrical input signal to providing an optical laser output signal. The optical output of the laser diode is coupled via a optical fiber through a fiberoptic feedthrough in a sidewall. The interior region is filled with xenon gas. A cover is welded on the sidewalls to form a sealed interior region with xenon gas therein. The xenon gas limits the movement of heat from the interior surface of the sidewalls and the interior surface of the cover to the surfaces of the thermoelectric cooler.
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公开(公告)号：AU5082701A
公开(公告)日：2001-11-07
申请号：AU5082701
申请日：2001-03-12
Applicant: LITTON SYSTEMS INC
Inventor： MCLEAN THOMAS , GOLDNER ERIC , TWEEDY MICHAEL
Abstract: Interconnection mechanisms for a laser gyroscope assembly (10) enable it to be rapidly and non-harmfully assembled and disassembled prior to a more durable interconnection, to facilitate repair and rework. The assembly includes a fiber optic spool (12), an inner shield (16) and an outer shield (18), which are formed of a stress-annealed magnetic and generally malleable material. The outer shield comprises upper and lower portions or parts (30, 32) whose first and second end segments (62, 66) respectively terminate the portions. Segment (66) has angled intersecting conical surfaces (74, 76) which engage surfaces (65, 67) on segment (62). Stops (80, 83) are formed respectively on the ends of the segments so that a distal end (68) contacts an interior ledge surface (80) of outer shield (34), thereby to limit the mutual engagement and to center the segment configuration interfit. The position and location of the stop allows the intersecting edges of surface (65, 67) of outer shield (34) to precisely contact reverse taper segment (76) of surface (70) at a point beneath intersection (78) to ensure positive retention and mechanical locking of the upper and lower portions of outer shield (18). A plurality of notches (84) are positioned evenly about the periphery of the lower portion of the outer shield at its intersection of the upper portion. Tangs (90, 92) of a tool (88) are inserted in seriatim within the spaces for gradual disassembly of the upper and lower outer shield portions without harm thereto. Inner shield (16) includes a cover (28) having two pairs of projections (130, 132) which can snap together, and a top annular segment (126) which is engageable with a centering projection (138) on end (26) of the spool. When the cover is secured to the spool, the top annular segment is flexed, but not deformed, to provide a spring bias and positive retention and, consequently, a solid and chatter-resistant engagement in a robust mechanical connection even under severe dynamic environments.
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公开(公告)号：ITRM920660A1
公开(公告)日：1993-03-15
申请号：ITRM920660
申请日：1992-09-11
Applicant: LITTON SYSTEMS INC
Inventor： MCLEAN THOMAS , MOORE S GREGORY
Abstract: The invention temperature controlled package comprises a case having sidewalls that form a closed perimeter; a cover; and a base having an input surface and an output surface. The sidewalls are integrally coupled to the base input surface to define an interior region. A heatsink has a top surface and a bottom surface. The heatsink bottom surface is attached to the input surface of a thermoelectric cooler. The bottom surface of the thermoelectric cooler is coupled to the base input surface of the case. The thermoelectric cooler responds to a control signal to move heat from the thermoelectric cooler input surface to the thermoelectric cooler output surface. In a first alternative embodiment, a laser diode coupled to the heat sink responds to an electrical input signal to providing an optical laser output signal. The optical output of the laser diode is coupled via a optical fiber through a fiberoptic feedthrough in a sidewall. The interior region is filled with xenon gas. A cover is welded on the sidewalls to form a sealed interior region with xenon gas therein. The xenon gas limits the movement of heat from the interior surface of the sidewalls and the interior surface of the cover to the surfaces of the thermoelectric cooler.
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公开(公告)号：AU3642802A
公开(公告)日：2002-05-21
申请号：AU3642802
申请日：2001-07-31
Applicant: LITTON SYSTEMS INC
Inventor： MCLEAN THOMAS , GOLDNER L ERIC
Abstract: Single and multi-level structures provide neatly organized, secure and easily repairable optical fiber connections between a pump source laser diode (54) and optical fiber coils represented by x-axis coil (22), y-axis coil (24) and z-axis coil (26). The structures employ specially organized trays (60, 62) for supporting such components as a 1x3 fiber optic coupler (46), an optical isolator (ISO) (48), a wavelength division multiplexer (WDM) (50), a doped fiber coil (52) and a tap coupler (56), and for holding and routing the optical fibers coupled to and between the components. Routing and secure holding of the fibers are facilitated by a built-in optical fiber holder (120), integral with tray (60), and individual optical fiber holders (140), which are stackable upon the built-in holder or upon each other. Each tray includes internal guides, such as a guide post (118), and segmented internal and external walls which provide optical fiber routing paths (96, 100, 160) and wall separations and/or openings (102,104,106,132,162) to permit ingress and/or egress of fibers or attachment points, similar to wall separations (145) in the stackable holders. Special resilient clam-shell holders (168, 172) safely hold the fragile components, and are incorporated within the trays to facilitate inter-structural and exterior coupling.
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