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| Number | Title | Issue Date |
| 4168125 | Light sensing device The sensing device is a light level indicator that comprises a light sensitive element such as a photo resistor, associated detection circuitry and "go" and "no go" indicator lights which determine whether the level of illumination is above or below a pre... | 09/18/1979 |
| 4153329 | Optical crosspoint switch having mode-conversion facilities A plurality of crossed input and output optical channels are arranged in coordinate fashion to define a crosspoint array. A pair of jointly operable mode switches are disposed in the respective channels that form each crosspoint. Operation of the mode swi... | 05/08/1979 |
| 4147407 | Coatings for fiber waveguides Microbending loss is reduced and abrasion protection is afforded for optical fibers by relatively thick polymer coatings characterized in part by a preferred elastic tensile modulus and cold flow property. The coating process uses rapid cooling of a liqui... | 04/03/1979 |
| 4146299 | Optical waveguide connectors for multiple waveguide cables A multiple waveguide cable connector assembly is disclosed for coupling the opposing pluralities of protectively-jacketed optical fiber waveguides contained within a pair of multifiber cables. Each of the two connectors forming the connector assembly contains ... | 03/27/1979 |
| 4145142 | Apparatus for and method of testing direct-view image intensifiers A beam from a test image is split into two paths. The beam in one path may pass through broad-band or narrow-band attenuators to the intensifier being tested. A portion of the beam in the other path passes through a hole in a reflector to the eye of a vie... | 03/20/1979 |
| 4143940 | Device for coupling a radiation source to a monomode optical transmission fiber with the aid of a resonant cavity A device for coupling a radiation source, i.e. a laser resonator to a monomode optical transmission fiber with the aid of a resonant cavity wherein the laser resonator forms part of the resonant cavity and the end of the transmission fiber adjoining the r... | 03/13/1979 |
| 4143941 | Low loss optical data terminal device for multimode fiber guide optical communication systems The active data terminal device employs an array of multiple mode optical fiber guides as input-output devices, each abutted against a flat input-output focal face of an electro-optically active plate provided with opposed deflection modulation electrodes... | 03/13/1979 |
| 4142777 | Device for connecting optical fibres together A connection device allowing optical fibres manufactures in a factory to be connected together in the field by end pieces. Each end piece comprises a fibre clamped between three cylindrical rods which lie tangential to each other in pairs and encompass a ... | 03/06/1979 |
| 4142782 | Display arrangements employing thermochromic compositions Display arrangements useful as art forms and useful in advertising applications can be constructed by coating areas of the surface of a support with differently colored compositions, each of which is capable of appearing as being of one color at one tempe... | 03/06/1979 |
| 4142780 | Exchangeable liquid crystal panel Interconnection is removably provided between a liquid crystal panel and a circuit board or semiconductor chip which provides exchangeability for the liquid crystal panel which is advantageous because of the limited operating life inherent in liquid cryst... | 03/06/1979 |
| 4140365 | Fiber optic cable connector housing A connector housing for a pair of fiber optic cables each terminated by a sleeve. The housing is provided with integral resilient latching fingers adjacent to its opposite ends which engage behind shoulders on the sleeves to releasably retain the sleeves ... | 02/20/1979 |
| 4139259 | Light distributor for optical communication systems A light distributor which is connected to an incoming light guide and a plurality of outgoing light guides for distributing a light arriving from the incoming light guide into the plurality of outgoing light guides characterized by the distributor compris... | 02/13/1979 |
| 4139260 | Optical fibers bundles connector This invention provides an optical fibers bundles connector comprising a male member and a female member which can be plugged into one another. In one of these members is included a single fiber of the same diameter as the bundles which are to be connecte... | 02/13/1979 |
| 4136929 | Apparatus for generating light pulse train The ends of a length of optical fiber are coupled to each other to form a closed loop so that light wave may propagate freely through the looped optical fiber. At one or more portions of the looped path of light are provided the sections through which the... | 01/30/1979 |
| 4135779 | Variable ratio optical junction device An optical fiber junction device for coupling a pair of optical fibers with a third optical fiber. A portion of the cladding is etched from the end portions of the pair of fibers, and those end portions are then secured together in side-by-side relationsh... | 01/23/1979 |
| 4135112 | Color cathode ray tube screen structure providing improved contrast A color cathode ray tube screen structure, having means for enhancing the absorption of ambient light and providing improvement in the contrast of the image display, is comprised of three superimposed substantially continuous window-defining layers of opt... | 01/16/1979 |
| 4134639 | Optical path-length equalizer with graded refractive index Signals, especially short pulses, are transmitted by way of cascaded light guides with internally reflecting boundaries (i.e. fibers or foils) between which a transparent body of graded refractive index is interposed. The refractive index of the body vari... | 01/16/1979 |
| 4132461 | Connecting plug for optical cable The present invention relates to a plug which makes it possible with the help of an interconnecting device to position and connect in pairs optical fibres pertaining to optical cables. The positioning of each optical fibre is achieved by a three-elements ... | 01/02/1979 |
| 4130343 | Coupling arrangements between a light-emitting diode and an optical fiber waveguide and between an optical fiber waveguide and a semiconductor optical detector A terminating portion of an optical fiber waveguide having a polished beveled end is laterally disposed directly on the light-emitting surface of a light-emitting diode (LED). The light power coupled into the fiber consists of two components: the light po... | 12/19/1978 |
| 4130345 | Optical coupling apparatus Optical coupling apparatus for coupling a portion of the optical energy propagating through each individual optical fiber of an optical transmission system into an associated optical fiber is disclosed. The coupling apparatus utilizes a single semi-reflec... | 12/19/1978 |
| 4128299 | Waveguide optical modulator Light propagating in a waveguide is modulated by deforming a cladding on at least one surface of the waveguide. The cladding has a thickness at least equal to the exponential depth of the evanescant field of the propagating light. A pair of electrode mean... | 12/05/1978 |
| 4128298 | Wand nose with integral light pipe for wand power turn-on Described is a light pipe for transmitting light signals to and from a transmitter/receiving sensor. The light pipe is a homogeneous body made by injection molding an arcylic plastic material.... | 12/05/1978 |
| 4127320 | Multimode optical modulator/switch A multimode optical waveguide having refractive index n, width a, and length L is provided with branches on either side of each end and has an electrode pattern capable of differentially delaying the even modes and the odd modes of light of wavelength λ ... | 11/28/1978 |
| 4126382 | Operational method for displaying images with liquid-crystal electro-optical devices, and apparatus therefor An operational method is disclosed for the display of images by an electro-optical device comprising a liquid-crystal cell inserted between two polarizing devices, means being provided for impressing on the liquid crystal electric pulses, the improved met... | 11/21/1978 |
| 4123139 | Optical fiber connector An optical fiber connector includes a male connector portion having at least three cylindrical inner rods held in tangential contact with each other. The inner rods form an opening which contains and accurately positions an optical fiber within the male c... | 10/31/1978 |
| 4119363 | Package for optical devices including optical fiber-to-metal hermetic seal An optical fiber is hermetically sealed to a metal housing containing an optical device (e.g, a semiconductor junction laser or photodiode) by threading and centering the fiber through a thin walled metal tube, filling the tube with solder (e.g., a cylind... | 10/10/1978 |
| 4119367 | Liquid crystal displays A liquid crystal display comprises a liquid crystal material layer contained between transparent slides which carry electrodes arranged in lines and columns to form an x, y matrix with x, y intersections. The liquid crystal layer at the intersections are ... | 10/10/1978 |
| 4118105 | Optical coupling An optical coupling includes a socket, in which an electro-optical element is mounted, and a plug, in which a light-conducting element is fastened. The plug mateably engages the socket in such a manner that the electro-optical element and the light-conduc... | 10/03/1978 |
| 4118100 | Optical couplers for light emitting diodes and detectors An optical coupler is provided for connecting between optical fibers and electro-optical elements in optical communication systems. The coupler comprises one element consisting of a connector fiber within a support tube fixedly attached to the electro-opt... | 10/03/1978 |
| 4117396 | Sensor for thermally ionizable particles and/or vapors A sensor for detecting the presence of thermally ionizable particles and vapors is disclosed. The sensor comprises an ionizer for supplying sufficient heat to thermally ionize the particles to be detected. The ionized particles are then caused to flow bet... | 09/26/1978 |
| 4114979 | Fiber optic connector The retainer sleeve of a three piece ferrule suitable for very small diameter optical fibers has an outside diameter threaded portion at the closed end so that, after the ferrule and optical fiber have been assembled, an outer sleeve, having a correspondi... | 09/19/1978 |
| 4113350 | Optical fibre waveguides An optical fibre waveguide comprising a glass or vitreous silica fibre is coated with a synthetic resin material, preferably a thermosetting resin such as a polyurethane resin, containing in at least part of its thickness a dispersion of a powdered non-me... | 09/12/1978 |
| 4113349 | Fiber reinforced optical fiber cable A room temperature vulcanizable silicone rubber having a high coefficient of thermal expansion is provided at the interface between an optical fiber and a surrounding fiber reinforced resin shell in a cable construction. The surrounding rubber because of ... | 09/12/1978 |
| 4113361 | Liquid crystal display device A liquid crystal display device comprising a liquid crystal display panel having a liquid crystal on the one side surface of which a first electrode group is grouped into a plurality of groups of segment electrodes adapted to define a character for each d... | 09/12/1978 |
| 4113346 | Method of making optical fiber terminations A ferrule terminated optical fiber in which the fiber is held only approximately on the axis of the ferrule on the sides of which flat reference surfaces are subsequently machined. Machining is performed to a predetermined distance from the center of a fi... | 09/12/1978 |
| 4111522 | Device for coupling two light conducting fiber cables A device for coupling an incoming light conducting fiber cable to an outgoing light conducting fiber cable characterized by at least one housing and means secured in the housing for holding the end faces of the light conducting fibers of each cable in cen... | 09/05/1978 |
| 4111561 | Defocused unicell photometer with diffusion zone A defocused unicell photometer of the type having a positive lens element is provided with at least one diffusion zone on a portion of the lens element surface to change the directional response characteristic of the photometer in a select manner without ... | 09/05/1978 |
| 4110049 | Sun meter A simple, inexpensive device for measuring the radiation energy of the sun impinging on the device. The measurement of the energy over an extended period of time is accomplished without moving parts or tracking mechanisms.... | 08/29/1978 |
| 4110000 | Fiber optic connector A connector assembly is disclosed for detachably connecting fiber optic cables with the fibers making a one-on-one engagement. The subject connector assembly includes means for spreading the fibers from the tightly packed bundle of the cable to a substant... | 08/29/1978 |
| 4108534 | Apparatus for on-site connection of cables with optical fibres Apparatus for on-site connection of two transmission cables comprising optical fibres, each cable having a protective armouring enclosing a central core provided with regularly spaced grooves on its periphery. Each groove holds a fibre provided with a thi... | 08/22/1978 |
