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"There is practically no chance communications space satellites will be used to provide better telephone, telegraph, television, or radio service inside the United States."
T. Craven, FCC Commissioner ; 1961
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| Number | Title | Issue Date |
| 7307711 | Fluorescence based laser alignment and testing of complex beam delivery systems and lenses Aligning and testing alignment of optical elements in a laser beam delivery system using non-visible radiation. An alignment mirror replaces a beam redirection mirror and includes a fluorescing substrate and a dielectric coating on an incident face of the fluorescin... | 12/11/2007 |
| 7102156 | Memory elements using organic active layer A memory element includes a first electrode, a passive layer on and in contact with the first electrode, a polyfluorene active layer on and in contact with the active layer, and a second electrode on and in contact with the polyfluorene active layer. The chemical st... | 09/05/2006 |
| 5654794 | Portable light intensity monitoring systems A portable flash tube intensity monitoring system which includes: an internal power supply; a human eye spectral response photodiode for producing analog signals, each of which is directly proportional to the intensity of each flash from the flash tube; e... | 08/05/1997 |
| 5446277 | Automated lamp monitoring system for comparing light intensities with a preselected valve Flash tube and lamp monitoring systems. The flash tube intensity monitoring system includes: a human eye spectral response photodiode for producing analog signals, each of which is directly proportional to the intensity of each flash from the flash tube; ... | 08/29/1995 |
| 4988193 | Method and apparatus for measuring incident light angle relative to level Apparatus operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane relative to level comprises a photodetector array for sensing the light and a level mirror preferably comprising a pool... | 01/29/1991 |
| 4907880 | Apparatus for determining angular deviation of an article An apparatus is provided for determining the angular deviation of a randomly angular oriented article from a desired angular orientation in preparation for its engagement by a robotic part handling device. The apparatus projects a rotating image of the ar... | 03/13/1990 |
| 4907848 | Holographic rotary and linear encoder and method An encoder includes a holographic element containing a plurality of holograms, one single mode fiber input line and N fiber optic output lines, which may be either single mode or multimode optical fiber. A light source is arranged to illuminate a selected... | 03/13/1990 |
| 4492465 | Retro-reflective electro-optical angle measuring system A scanning angle tracker which includes a laser beam and a beamsplitter for developing two beams which intersect on a scanning mirror. The scanning mirror sweeps the two beams across a retro-reflective tape on the object. Return signals are generated for ... | 01/08/1985 |
| 4443103 | Retro-reflective electro-optical angle measuring system A scanning angle tracker which includes a laser beam and a beamsplitter for developing two beams which intersect on a scanning mirror. The scanning mirror sweeps the two beams across a retro-reflective tape on the object. Return signals are generated for ... | 04/17/1984 |
| 4429993 | Method and apparatus for testing the correspondence of line of sight with target line Method and apparatus for testing the correspondence of the line of sight of optical instruments with the target line of weapons. A predetermined measuring field and a photoelectric line-type sensor are used. The nominal positions of the lines of sight and... | 02/07/1984 |
| 4040004 | Color coded vehicle guidance system A vehicle guidance system including means for projecting a beam of light to guide a vehicle such as an aircraft on a glide slope, and means for pulse coding the upper the lower portions of the beam providing to the aircraft pilot an indication of the airc... | 08/02/1977 |
| 3944821 | Detection of angular position In the measurement of angular position the phenomena of moire or watered configurations produced by a grating on a disc is used.... | 03/16/1976 |
