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In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 4378568 | Light valve imaging apparatus and method for providing gray scale Electronic imaging apparatus and method of the kind utilizing a light valve array including a line of discretely-addressable pixels activatable between a light transmitting and light blocking state by an electrical field features addressing of such pixels... | 03/29/1983 |
| 4375648 | High-resolution light valve apparatus for electronic imaging Light valve imaging apparatus utilizes an area light valve array to effect high pixel resolution exposure of a line of record medium passing through an area exposure region during a plurality of partial-line-exposure sub-periods.... | 03/01/1983 |
| 4375647 | Light valve scanner and scanner/printer apparatus for color originals Apparatus for scanning succesive lines of a color original moved past a scan station includes: (1) photodetector means, (2) illuminating means for producing a plurality of discrete color separation illuminations of said detector means, via each passing or... | 03/01/1983 |
| 4375649 | Scanning device with area-to-linear mapping and related electronic scanner/printer apparatus A two-dimensional illuminating array comprising discretely addressable pixel portions (e.g. a light valve array) is imaged by lens means onto optical mapping means (e.g. a light diffracting or refracting array). The mapping means re-images the pixel porti... | 03/01/1983 |
| 4374397 | Light valve devices and electronic imaging/scan apparatus with locationally-interlaced optical addressing A light valve device for locationally-interlaced, optical addressing of an imaging or scan zone includes an array having a plurality of location-address sectors, each including a plurality of discrete light valve pixel portions which are electrically addr... | 02/15/1983 |
| 4371892 | Light valve imaging with optimized addressing potential(s) to reduce inter-pixel nonuniformity Electronic imaging apparatus of the kind having an electro-optic light valve array effects more uniform inter-element light transmission by utilizing predetermined, nominal activating potentials. In one preferred embodiment the potentials are proximate th... | 02/01/1983 |
| 4371897 | Fluorescent activated, spatially quantitative light detector A fluorescent-activated spatially quantitative light detector for sensing light reflected from an information bearing surface, said light detector comprising a generally cylindrical rod containing a fluorescent dye dispersed throughout a generally transpa... | 02/01/1983 |
| 4367946 | Light valve imaging apparatus having improved optical configuration Electronic imaging apparatus of the kind having an imaging zone; a light valve array comprising a plurality of discretely-addressable light-modulating pixel regions; illuminating means for directing light to the imaging zone via the array and means for ad... | 01/11/1983 |
| 4366499 | Electronic color imaging apparatus having improved color control device Electronic color imaging apparatus of the type having an image exposure control means including a plurality of electrically-addressable pixel light valves for selectively controlling the passage of light to different pixel regions of an imaging zone in re... | 12/28/1982 |
| 4366500 | Electronic color imaging apparatus having integral multicolor arrays Electronic imaging apparatus of the kind having a light valve array comprising a plurality of discretely addressable pixel portions which are transformable between light blocking and light passing states in response to activating electric fields features ... | 12/28/1982 |
| 4357625 | Light valve imaging apparatus having enlarged pixel exposing regions Electronic imaging apparatus of the kind having light valve arrays operable to selectively pass light to an imaging zone in response to electrical activation according to an image signal features a light valve array having a plurality of pixel exposing re... | 11/02/1982 |
| 4302770 | Color raster scanner for recording cartographic data A color raster scanner includes separate optical paths including a resolution aperture for resolution imaging and a separate, larger screen aperture for large area imaging; each aperture receiving the reflected source chart image through common collection... | 11/24/1981 |
| 3961366 | Apparatus for exposing a light-sensitive layer An apparatus for exposing a light-sensitive layer employed for the manufacture of reproductions of black-and-white or colored patterns, wherein the image of the pattern which has been projected onto a support is taken or scanned by means of an electronic ... | 06/01/1976 |
