公开(公告)号：WO1993026031A1

公开(公告)日：1993-12-23

申请号：PCT/US1993005582

申请日：1993-06-09

Applicant: QUANTIC INDUSTRIES, INC.

Inventor： QUANTIC INDUSTRIES, INC. ,  WILLIAMS, Michael, S. ,  MOSER, Jeffrey, M. ,  GOURLEY, Helen, V.

IPC: H01J05/16

CPC classification number: F42B3/113 ,  G01M11/31 ,  G01M11/3127

Abstract: The optical continuity of a fiber optic conduit (14) is tested by terminating the fiber optic conduit (14) with an element having a wavelength-dependent coefficient of reflectivity, coupling (13) to the fiber optic conduit (14) light of a first wavelength band (36), detecting (48) light in the first wavelength band reflected back through the fiber optic conduit, coupling (13) to the fiber optic conduit (14) light of a second wavelength band (38), and detecting (48) light in the second wavelength band reflected back through the fiber optic conduit (14) and light in the second wavelength band reflected back through the fiber optic conduit (14). A relative comparison is formed of light in the first wavelength band reflected back through the fiber optic conduit (14). Reliable continuity testing of a fiber optic conduit (14) including multiple in-line connectors (15) is thereby made possible.

Abstract translation: 通过用具有波长依赖的反射系数的元件端接光纤导管（14）来测试光纤导管（14）的光学连续性，将光纤导管（14）与第一 波长带（36），检测（48）通过光纤导管反射回的第一波长带中的光，将第二波长带（38）的光耦合到光纤导管（14），并检测（48） ）光通过光纤导管（14）反射回来的第二波长带中，而第二波长带中的光通过光纤导管（14）反射回来。 相对比较由通过光纤导管（14）反射回的第一波长带中的光形成。 由此可以实现包括多个在线连接器（15）的光纤导管（14）的可靠的连续性测试。

公开(公告)号：WO1992005572A1

公开(公告)日：1992-04-02

申请号：PCT/US1991006511

申请日：1991-09-06

Applicant: TSI INCORPORATED

Inventor： TSI INCORPORATED ,  BERKNER, Lawrence, S.

IPC: H01J05/16

CPC classification number: G01N15/1456 ,  G01N15/1436 ,  G01N21/8507 ,  G01N2015/0046 ,  G01N2015/0238 ,  G01N2201/084

Abstract: Instrument (16) for detecting single airborne particles, measuring their concentration, includes transmitting optical fiber (28) optically connected to light source (80) at one end, and collecting optical fiber (30) connected to photodiode (84) at one of its ends. Respective opposite ends of the optical fibers are polished smooth and flat potted into a rigid probe head (46), facing each other and separated by air gap (74). Some of the light crosses gap (74) between optical fibers (28, 30) and reaches detector (84), defining a particle sensing volume (76). Particles passing through this volume are optically detected. The device has simple optics, requiring no lenses or mirrors. The transmitting and collecting fibers, and the air gap, form a well defined and repeatable sensing volume (76). The particle size threshold in the electronics is a percentage of the light to the detector which allows it to remain in calibration when the amount of light through the probe changes.

公开(公告)号：WO1986003618A1

公开(公告)日：1986-06-19

申请号：PCT/US1985002420

申请日：1985-12-11

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  WHITE, Richard, Manning

IPC: H01J05/16

CPC classification number: G06F3/042 ,  G06F3/0421 ,  G06F2203/04109

Abstract: A tactile sensing device for use in robotics and medical prosthetics includes a transparent sheet-like element (12) and a second resilient sheet-like element (14) positioned adjacent the first transparent element. A light detection and imaging means (19) is positioned to observe the interface between the two elements. A light source (13) is provided to illuminate the interior of one of the two elements. Any object pressing against the resilient element deforms the same into contact with the transparent element. Areas of contact caused by the pressing object produce a lighted area that can be detected by the light detecting means (19). The output from the light detecting means may be processed by a computer and an image of the contact area (17) produced by the pressing object can be displayed on a monitor or processed to operate an electro-mechanical control.

公开(公告)号：WO1994009507A1

公开(公告)日：1994-04-28

申请号：PCT/US1993009599

申请日：1993-10-12

Applicant: ABBOTT LABORATORIES

Inventor： ABBOTT LABORATORIES ,  GUTCHECK, Robert, A. ,  LINDBERG, John, M. ,  VUREK, Gerald, G.

IPC: H01J05/16

CPC classification number: G02B6/4204 ,  G01D5/268 ,  G01N21/7703 ,  G01N2021/772 ,  G01N2021/7786 ,  G01N2201/062 ,  G02B6/4202 ,  H01S5/02415

Abstract: An optical distribution system incorporating an improved luminescent based optical fiber sensor incorporating a signal generating component (32) for generating a first optical signal, a signal separating component (49) for delivering said first optical signal to the sensor, delivering a second returned optical signal to an associated signal detector (42), and including signal interference means to separate said first and second signals and minimize cross-talk therebetween. A sensor optical fiber connects to a sensor tip (37) to the signal separating component. The signal detector receives a returned signal from the signal separating component and transmits it to a signal-measuring component of the distribution system.

Abstract translation: 一种包含改进的基于发光的光纤传感器的光分配系统，其包括用于产生第一光信号的信号产生部件（32），用于将所述第一光信号传送到传感器的信号分离部件（49），传送第二返回光信号 并且包括用于分离所述第一信号和第二信号的信号干扰装置，并使它们之间的串扰减至最小。 传感器光纤连接到信号分离部件的传感器尖端（37）。 信号检测器从信号分离部件接收返回的信号并将其发送到分配系统的信号测量部件。

公开(公告)号：WO1993024950A1

公开(公告)日：1993-12-09

申请号：PCT/US1993004626

申请日：1993-05-17

Applicant: LIBBEY-OWENS-FORD CO.

Inventor： LIBBEY-OWENS-FORD CO. ,  PURVIS, Michael, B. ,  TEDER, Rein, S.

IPC: H01J05/16

CPC classification number: B60S1/0822 ,  B60S1/0837 ,  B60S1/0881 ,  G01F23/2925

Abstract: Mounting of a sensing unit (17) upon the interior surface of a vehicle windshield (14) for detecting the presence of moisture upon the exterior surface and controlling operation of windshield wipers (15) in response thereto is disclosed. The sensing unit comprises a block (18) in which angularly oriented bores (22) are disposed. Light pipes (23) in a first set of the bores communicate with light sources (25) for transmitting light to the outer surface of the windshield, and light pipes in a second set of the bores transmit light reflected from the outer surface to photodetectors (29). The lower ends of the light pipes are coplaner with or raised slightly above the surface of the block which is to be secured to the windshield. The block is affixed to the interior surface of the windshield by a double faced adhesive interlayer which both securely adheres the block to the windshield surface and optically couples the light pipes to the windshield.

公开(公告)号：WO1991015867A1

公开(公告)日：1991-10-17

申请号：PCT/US1991002181

申请日：1991-03-28

Applicant: FIBERCHEM, INC.

Inventor： FIBERCHEM, INC. ,  KLAINER, Stanley, M. ,  FRANK, Chet, A. ,  DANDGE, Dileep, K. ,  GOSWAMI, Kisholoy

IPC: H01J05/16

CPC classification number: G01N21/7703 ,  G01N21/80 ,  G01N2021/0385 ,  G01N2021/1734 ,  G01N2021/1738 ,  G01N2021/174

Abstract: Single and multi-cell reservoir FOCS configurations, with single or dual fibers (6) with optional optical elements (12), have a cross-flow arrangement of the sample relative to the fiber. A wide variety of sensors, including pH, arsenic, benzene cyanide, hydrazine, cupric ion, TCE, mercuric ion, and iron (2+) are provided.

公开(公告)号：WO1988002545A1

公开(公告)日：1988-04-07

申请号：PCT/US1987002404

申请日：1987-09-23

Applicant: CONAX BUFFALO CORPORATION

Inventor： CONAX BUFFALO CORPORATION ,  POKORSKI, Joseph, D. ,  RHODES, Geoffrey, M. ,  TREGAY, George, W.

IPC: H01J05/16

CPC classification number: G02B26/04 ,  G01D5/268 ,  G01F1/065 ,  G01F23/366 ,  G01L11/02 ,  G02B6/3624 ,  G02B26/002

Abstract: An optical apparatus for measuring physical quantities, comprising an optical transducer (33) for sensing position, outgoing and return optical fibers (20, 23), and an electronic sensor control module (43). Light is generated at the control module and transmitted by the outgoing optical fiber (20) to the optical transducer (33) which varies relative intensity of two colors in a dissimilar manner in response to location of a positionable device (34, 35) in the optical transducer. The modified intensity is transmitted back to the control module via the return optical fiber (23). The control module (43) measures the intensity of the two returning colors, and then outputs an electrical signal proportional to the intensity ratio for analog applications, or alternatively tests the intensity ratio against preselected constants and outputs discrete signals for digital applications. The control module can, in addition, incorporate self-testing of the optical components.

Abstract translation: 一种用于测量物理量的光学装置，包括用于感测位置的光学传感器（33），出射和返回光纤（20,23）以及电子传感器控制模块（43）。 在控制模块处产生光并由出射光纤（20）传输到光学变换器（33），光学变换器响应于可定位装置（34,35）的位置而以不同的方式改变两种颜色的相对强度 光学传感器。 修改的强度经由返回光纤（23）被传送回控制模块。 控制模块（43）测量两个返回颜色的强度，然后输出与模拟应用的强度比成比例的电信号，或者替代地测试强度比与预选常数，并输出数字应用的离散信号。 此外，控制模块还可以并入光学部件的自检。

公开(公告)号：WO1979000424A1

公开(公告)日：1979-07-12

申请号：PCT/US1978000245

申请日：1978-12-22

Applicant: DURO TEST CORP

Inventor： DURO TEST CORP ,  WALSH P

IPC: H01J05/16

CPC classification number: H01K1/32

Abstract: An incandescent lamp utilizing an etalon type transparent heat mirror (11, 13) on the lamp envelope (40) for transmitting radiation in the visible range produced by the lamp filament and reflecting infrared thermal radiation back to the filament for increasing its temperature and thereby increasing its efficiency.

公开(公告)号：WO1998014974A1

公开(公告)日：1998-04-09

申请号：PCT/US1997017270

申请日：1997-09-26

Applicant: ZIMMERMAN CONSULTING, L.L.C.

Inventor： ZIMMERMAN CONSULTING, L.L.C. ,  ZIMMERMAN, H., Allen

IPC: H01J05/16

CPC classification number: B60S1/0822 ,  B60S1/0833 ,  B60S1/0885

Abstract: A water droplet detection apparatus is disclosed which detects raindrops (23) on the outer surface of a windshield (22) of a vehicle even in the presence of fog droplets on the inner surface of the windshield. A first light beam (12) is transmitted through the windshield to the raindrops which redirect the light beam and cause a portion of it to be transmitted to a photodetector (20), which causes a detector circuit (Figures 5, 6A and 6B) to produce a rain output signal that increases in the amount of raindrops on the windshield. The first light beam strikes the inner surface of the windshield at an acute angle of about 40 degrees or less so that it is not redirected by the fog droplets to the photodetector to produce a false rain signal. A second light beam (14) may be transmitted through the windshield to the photodetector to determine the light transmissivity of the windshield.

Abstract translation: 公开了一种水滴检测装置，其即使在挡风玻璃的内表面上存在雾滴的情况下也检测车辆挡风玻璃（22）的外表面上的雨滴（23）。 第一光束（12）通过挡风玻璃传送到雨滴，该雨滴重定向光束并使其一部分透射到光电检测器（20），这导致检测器电路（图5,6A和6B） 产生增加挡风玻璃上雨滴量的雨量输出信号。 第一光束以约40度或更小的锐角撞击挡风玻璃的内表面，使得其不被雾滴重定向到光电检测器以产生假雨信号。 第二光束（14）可以透过挡风玻璃传送到光电检测器，以确定挡风玻璃的透光率。

公开(公告)号：WO1998002898A1

公开(公告)日：1998-01-22

申请号：PCT/US1997011906

申请日：1997-07-10

Applicant: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Inventor： THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ,  HODGSON, Craig, W. ,  WAGENER, Jefferson, L. ,  DIGONNET, Michel, J., F. ,  SHAW, H., John

IPC: H01J05/16

CPC classification number: H04B10/2939 ,  G01D5/35383 ,  G01H9/004

Abstract: The present invention significantly improves the signal to noise ratio (SNR) in a passive optical array comprising sensors (110) located in rungs between a distribution bus (100) and a return bus (120). Erbium-doped optical fiber amplifiers (130, 132) are included in the buses proximate to each rung coupling to offset the coupler splitting losses. The gains of the amplifiers are selected to offset losses due to the couplings. The overall SNR can be maintained without significant degradation even for large numbers of sensors. In one aspect of the present invention, the amplifiers are located along the distribution and return buses directly after the couplers (140, 142), except for the last coupler. In a second aspect, the amplifiers are located directly before each coupler. The optical amplifiers preferably are made of short lengths of erbium-doped fiber spliced into the distribution and return buses.

Abstract translation: 本发明显着改善了包括位于分配总线（100）和返回总线（120）之间的梯级中的传感器（110）的无源光学阵列中的信噪比（SNR）。 掺铒光纤放大器（130,132）被包括在靠近每个梯级耦合的总线中以抵消耦合器分离损耗。 选择放大器的增益来抵消由于耦合造成的损耗。 即使对于大量的传感器也可以维持整体SNR而没有显着的降低。 在本发明的一个方面，除了最后一个耦合器之外，放大器沿着分配和返回总线直接位于耦合器（140,142）之后。 在第二方面，放大器直接位于每个耦合器之前。 光放大器优选地由拼接到分布和返回总线中的短长度的掺铒光纤制成。