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| Number | Title | Issue Date |
| 4113347 | Arrangement for directional radiation of light in symbol-indicator systems An arrangement for directional radiation of light in symbol-indicator systems which are to be effective over fairly large distances, with the symbols being formed by dots of a dot matrix which receive light from respective light conductor bundles, particu... | 09/12/1978 |
| 4111524 | Wavelength division multiplexer A multiplexer/demultiplexer for optical fibers is disclosed that features a reflection diffraction grating and a graded refractive index rod in a rugged, compact assembly having low insertion loss and low crosstalk.... | 09/05/1978 |
| 4105332 | Apparatus for producing a light beam having a uniform phase front and distance measuring apparatus An apparatus including a frusto-conically shaped tube for transmitting light with internal reflection surfaces which diverge in the direction from input to output. Incident light from an LED or other substantially phase coherent source is mixed by interna... | 08/08/1978 |
| 4102559 | Optical device for coupling optical fibers to each other and/or a light source Two very thick plano-convex lenses with a common axis are positioned with their convex surfaces facing each other, and a radiation source and the input face of a fiber are each disposed on one of these surfaces in the vicinity of the axis. The main featur... | 07/25/1978 |
| 4092061 | Side-coupling of light for an optical fiber Light is coupled into and out of an optical fiber from the side by providing an acute angular cut along the end of the optical fiber and locating a light source adjacent the side of the optical fiber opposite the inner facing surface of the cut such that ... | 05/30/1978 |
| 4078852 | Radiant energy coupler A coupler for connecting a radiant energy transmitting element to a radiant nergy receiving element which utilizes a specially designed lens for each element, said lenses having spherical convex segments positioned in close face-to-face relationship so tha... | 03/14/1978 |
| 4067937 | Method for forming a light transmission glass fiber equipped with an optical lens An optical lens equipped glass fiber is formed by bringing at least one end of a glass fiber into contact with an optical lens forming liquid-like material with the liquid-like material deposited onto the end of the glass fiber in a manner to have a curva... | 01/10/1978 |
| 4060309 | Adjustable connector assembly for laser effect diode, focussing lens and an optical fibre in optical fibre transmission system An adjustable connector assembly for a laser effect diode, a focussing lens and an optical fibre in an optical fibre transmission system comprising a tubular body generally symetrical about the axis. One end of the tubular body, namely the front end, is p... | 11/29/1977 |
| 4054364 | Apparatus for transmitting light through Cassegrain optics A method and apparatus for efficiently transmitting light through Cassegr type optics by way of fiber optics.... | 10/18/1977 |
| 4052120 | Optical apparatus for producing a light curtain An optical apparatus for producing a light curtain using a fibre optic rod with a sawtooth mirror disposed along the face away from the curtain area.... | 10/04/1977 |
| 4050782 | Mode separator and delay equalizer for multimode optical fiber transmission systems The invention contemplates an improved light-mode separator for orientation in axially offset adjacency to an end of an optical fiber, in a plane perpendicular to the fiber axis; separate concentric regions of the separator about the fiber axis have diffe... | 09/27/1977 |
| 4042823 | Optical scanner An optical scanner to inspect the surface of an object. A laser beam source mits a beam which is reduced in cross section, for mode matching, and caused to rotate by a series of lenses. A collimating lens focuses the rotating beam into a fiber optic cable.... | 08/16/1977 |
| 4025157 | Gradient index miniature coupling lens A miniature optical lens for coupling is fabricated from selected high rective index semiconductor material of uniform thickness. Refractive index gradients are generated in the semiconductor material through changes in composition developed under contro... | 05/24/1977 |
| 4012147 | Slit-less spectrometer The use of an optical fiber for providing a point source of radiation at the entrance of a spectrometer obviates the necessity for an entrance slit at the input end of the device. Improved optical imaging at decreased expense is achieved.... | 03/15/1977 |
| 3991318 | Optical detection systems utilizing organ arrays of optical fibers An organ array comprises a plurality of optical fibers each cut to a different length with the differences between functionally adjacent (i.e., lengthwise consecutive) fibers being uniform. The fibers are arranged in a bundle so that one set of ends of th... | 11/09/1976 |
| 3980391 | Optical fiber transmission compensator In an optical fiber, light energy is transmitted in a number of modes having characteristic group velocities, and it is frequently necessary to limit transmission to modes whose group velocities are not excessively disparate. The invention avoids this lim... | 09/14/1976 |
| 3954323 | Optical waveguide linear modulator array An optical waveguide linear modulator array comprising an optical waveguide having an input coupler and an output coupler. The waveguide or substrate is formed of electrooptical material with different shaped electrodes secured thereto. An electrical fiel... | 05/04/1976 |
| 3949318 | Optical intermediate amplifier for a communications system An optical intermediate amplifier intended for a system of communications transmission by means of light waves through optical wave guides employs an optical amplifier for amplifying the light waves on the laser principle. The amplifier is provided with r... | 04/06/1976 |
| 3938895 | Method for positioning an optical fiber A method is described for positioning an optical fiber. The method takes two general forms: (1) The optical fiber is positioned carefully with respect to some predetermined external surface on a stationary holder such that the optical fiber may be later p... | 02/17/1976 |
| 3937560 | Single fiber access coupler This system couples light from a single fiber transmission line to a sepae output line which passes some light through the coupler to a single fiber transmission line which transmits the light on over a single optical fiber. A mirror within a portion of ... | 02/10/1976 |
| 3937557 | Star coupler for single mode fiber communication systems An optical coupler system in which optical communications from separate cers are transmitted over separate lines of a single optical fiber to a coupler which combines the information and transmits the combined information over different single fibers to ... | 02/10/1976 |
| 3932184 | Fabrication of microlenses Photolithographic techniques are employed to fabricate hemispherical or semicylindrical microlenses on the end surfaces of optical fibers. The power coupling efficiency between junction lasers and fibers is thereby significantly increased.... | 01/13/1976 |
