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| Number | Title | Issue Date |
| 4421384 | Fiber optic transducer A fiber optic transducer is provided by cutting and polishing the ends of two optical fibers, having equal indexes of refraction, at angles with respect to their axis such that all light signals propagating within the optical fibers are incident to the en... | 12/20/1983 |
| 4420219 | Optical waveguide connector using aspheric lenses A device for connecting first and second light guides to an external part. Each of the light guides extend into a housing which includes a converging aspheric plano-convex lens. The lenses are mounted so that the focal point of the lens is located at the ... | 12/13/1983 |
| 4383730 | Optical four-gate coupler An optical four-gate coupler, which is particularly useful when used in a bus system and has a pair of input fibers and a pair of output fibers which are arranged with the planar end faces of the four fibers abutting one another in an axial offset fashion... | 05/17/1983 |
| 4381448 | Wide angle intensity pickoff A wide angle light intensity pickoff system, having a very fine signal reution of less than a degree, provides a linear range of about &#b1;35 degrees with a total range of &#b1;90 degrees. The pickoff system can be used with any angular measurement syst... | 04/26/1983 |
| 4379615 | Device for transmitting energy through electric wire or optical cable wound on drum A device for transmitting signals or energy between a reel wound multi-core or multi-conductor cable and a stationary terminal unit without the use of a sliding connector. Dummy bobbins are provided coaxially with and rotatable with the winding reel with ... | 04/12/1983 |
| 4378144 | Optical switch An optical switch having a light input side and a light output side where there are a plurality of optical waveguides with light collimating lenses on one of the sides with the lenses in spaced positions and, on the other side there is an optical waveguid... | 03/29/1983 |
| 4376566 | Fiber optic switching method and apparatus with flexible shutter An extremely thin shutter is moved into and out of the space between closely-spaced ends of a pair of axially and angularly aligned optic fibers to prevent or establish transmission of light between the fibers. In one embodiment a cantilever shutter is ro... | 03/15/1983 |
| 4365862 | Optical switch An optical switch comprising a substrate with a refractive index n1 which is transparent with respect to a guided light beam, an optical waveguide film with a refractive index n2 which is formed on the substrate, a low-refractive-ind... | 12/28/1982 |
| 4360247 | Evanescent fiber optic pressure sensor apparatus An apparatus is disclosed for optically sensing pressure using evanescent wave coupling between two fiber optics. A support base with a channel holds the two waveguides, one on top of the other, with the portion of the waveguide having the cladding materi... | 11/23/1982 |
| 4337995 | Switch for optical transmission lines Disclosed is an optical switch for changing over the mode connecting two optical transmission lines comprising two optical fibers directly to each other and the mode connecting an optical communication device between the two transmission lines. In this op... | 07/06/1982 |
| 4325604 | Input and output coupler device A coupler device for use with light conducting fibers to couple-out and couple-in a light signal to the fibers comprises at least three optical fibers and a physical structure for holding the fibers in a plane with the first and second fibers converging t... | 04/20/1982 |
| 4304460 | Optical switching device Respective end faces of two or more optical waveguides (23 to 29) are connected on one end face of a focussing rod lens (20) and a reflection means (21) having a reflection plane tilted with a specified angle () to the normal plane to the lens axis... | 12/08/1981 |
| 4302071 | Adjustable directional coupler for light waveguides A coupler for coupling a light signal traveling in a light conducting core of one light waveguide into the light conducting core of a second waveguide with an adjustable ratio of the amount of coupling therebetween characterized by a pair of support membe... | 11/24/1981 |
| 4268116 | Method and apparatus for radiant energy modulation in optical fibers Radiant energy is caused to modulate in phase and frequency in a single mode optical fiber by means of a relatively movable, spatially periodic perturbation.... | 05/19/1981 |
| 4265513 | Light switch A multichannel light switch including a cylindrical-shaped light-focusing transmission body having a length equal to an odd multiple of one quarter of the pitch of light beam undulation within the body and having a total reflection coating applied to one ... | 05/05/1981 |
| 4261638 | Optical switch with rotating, reflective, concave surface An optical switch is disclosed which relies only on a rotatable, reflective concave surface (3) to couple light between an optical source (1) and a preselected one of a plurality of optical receptors (6). The switch is bidirectional, i.e., the position of... | 04/14/1981 |
| 4245886 | Fiber optics light switch A light switch for controlling the transmission of optical energy through optical fibers includes a hollow, light-transmitting tube extending transversely across the end of at least one light transmitting fiber. The tube contains one or more masses of lig... | 01/20/1981 |
| 4220396 | Fiber optic switch A fibre optic switch is constructed by having two flat springs each of which carries optical fibres which end at one edge of the spring. The two spring ends are close to each other and at 90°, so that by suitable positioning of the springs any fibre on o... | 09/02/1980 |
| 4208094 | Optical switch A rugged, compact optical switch is disclosed which comprises a quarter-period graded refractive index (GRIN) lens (1); a rotatable reflecting surface (2.1) disposed at a first surface (1.3) of the GRIN lens at an angle to the first surface; an optical so... | 06/17/1980 |
| 4189206 | Optical switching device An optical switching means including an optical fiber moving means which is moved by an electromagnetic force, a spring body which has a guide hole through which an optical fiber passes and at least one magnetic body. The magnetic body is fixed on one of ... | 02/19/1980 |
| 4176908 | Devices for monitoring, switching, attenuating or distributing light An access port, a basic building block for optical devices, is formed by joining the ends of two fibers. Each fiber has a wedge-shaped end portion with two planar sides. One planar side of one end portion is held against one planar side of the other end p... | 12/04/1979 |
| 4156556 | Fiber optic coupler with concave spherical reflecting elements An optical coupler transfers light energy signals relative to an optical h which includes a fiber optic cable. A body member includes first and second ports at opposite ends for supporting first and second terminals of the fiber optic cable in laterally ... | 05/29/1979 |
| 4150870 | Adjustable distributor device for shared transmission of radiant energy The present invention relates to an adjustable radiation distributor for fiber optics networks. This distributor effects distribution of an incident radiation between several optical cables by means of a fixed coupling element of fork shape, the body of w... | 04/24/1979 |
| 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 |
| 4124271 | Fiber optic switch and connector A fiber optic switch for switching light energy between a plurality of fiber optic bundles, including a plurality of fiber optic connectors for transmitting light energy from individual ones of the plurality of fiber optic bundles to a plurality of indivi... | 11/07/1978 |
| 4107517 | Opto-electric device Apparatus for transmitting an information signal from one to the other of two relatively rotatable members comprises one or a plurality of light sources radiating into a light guide having an output face which extends over a substantial arc of a circle ar... | 08/15/1978 |
| 4088387 | Optical switch An optical switch affords the selective coupling of any of a plurality of input light signals to any of a plurality of optical output paths. A first plurality of ports circumferentially disposed in a first common plane supports means for transmitting and/... | 05/09/1978 |
| 4057719 | Fiber optics electro-mechanical light switch An electro-mechanically actuated light switch is provided for transferring ight energy into or out of a fiber optic light transmission path. Liquid material contained within the switch provides a continuity between two fiber optic terminals in the fiber op... | 11/08/1977 |
| 3977764 | Variable coupler for optical fibers The present invention relates to a variable coupler for optical fibers, which can also operate as a mixer. This variable coupler comprises an optical system which concentrates the divergent radiation issuing from the output orifice of a transmitter fiber,... | 08/31/1976 |
