Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6849855 | Method for marking and identifying objects coated with up-conversion material A method of marking and identifying an object (10) by the marking consists of applying to an object (10) an up-conversion material (12), then irradiating the object (10) with infrared electromagnetic radiation (16) and, finally, ob... | 02/01/2005 |
| 6166815 | Constantly high sensitivity fiber optic interferometer sensor A fiber optic interferometric sensor (150) having constantly high sensitivity by use of two lasers (152, 154) that simultaneously output at first and second wavelengths. By judicious choice of the wavelengths, the optical path length difference between th... | 12/26/2000 |
| 5856811 | Visual display and helmet assembly A visual display and helmet assembly is configured to function in the presence of a harsh environment, e.g., high wind, vibration and shock and strong ambient light. The visual display preferably includes a transmissive liquid-crystal display to reduce th... | 01/05/1999 |
| 5750901 | Optical fiber apparatus and method for measuring geological strains A measurement optical fiber is placed into contact with a geological structure, and a reference optical fiber of about the same length is not contacted to the geological structure. An input beam of light is transmitted down the lengths of the measurement ... | 05/12/1998 |
| 5657163 | Fiber optic illumination of HUD image source The image source of a head up display for a motor vehicle is illuminated from a remote high intensity source using fiber optics. The HUD image source and optics are under the dash pad of the vehicle and include color LCD or color filtered image source. Th... | 08/12/1997 |
| 5469519 | Optical waveguide image transmission system and method An improved image transmission system which includes an elongate optical waveguide 15 having an input aperture 17 and an output aperture 19. Optical apparatus 11, 13 is provided for injecting a transform of an image into the waveguide. In a specific imple... | 11/21/1995 |
| 5454047 | Optical method and system for generating expansion coefficients for an image processing function A system for optically generating expansion coefficients for an image processing function. The invention (10) includes a first optical element (18) for providing a transform of an image provided at a first image plane (16). A second optical arrangement (2... | 09/26/1995 |
| 5416332 | Integrated test target assembly and compact collimator An improved wide-spectrum test target assembly, with visual and near IR (infrared) targets integrated with a long wavelength emissivity target. A single relatively thick optical fiber (78) is used to receive target signals emitting from several thinner fi... | 05/16/1995 |
| 5405680 | Selective emissivity coatings for interior temperature reduction of an enclosure Selective emissivity coatings are disclosed for temperature reduction of enclosures such as vehicles and building structures. The coating includes a selective emissivity material such as silicon-oxy-nitride having a desired thermal emissivity function whi... | 04/11/1995 |
| 5345522 | Reduced noise fiber optic towed array and method of using same A sensitive towed optical fiber sensor array 50, wherein the fiber sensors (60A-60N) are connected in parallel, and the optical fiber cable (34) is paid out from the towing ship at a velocity about equal to but opposite to the velocity of the towing ship.... | 09/06/1994 |
| 5324937 | Target for calibrating and testing infrared devices An improved target for testing and calibrating a detection device. The target (10) includes a metal substrate (12) with a first layer (14) of high emissivity material and a second layer (16) of low emissivity material are deposited thereon. In the specifi... | 06/28/1994 |
| 5291032 | Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers An optical fiber evanescent wave fuel sensor, employing a light source with a wavelength selected to be at the strong infrared absorption lines of the fuel, typically hydrocarbons. The amount of light leaking from the optical fiber is an exponential funct... | 03/01/1994 |
| 5289266 | Noncontact, on-line determination of phosphate layer thickness and composition of a phosphate coated surface A nondestructive method and apparatus is disclosed for determining the thickness and composition of a zinc phosphate layer applied to a metal surface, such as sheet metal on an automotive assembly line. The phosphate layer is irradiated with infrared ligh... | 02/22/1994 |
| 5281813 | Laser rangefinder test system An inexpensive, broadband technique for testing laser rangefinder systems. The invention includes a mechanism (18) for detecting an emission of a pulse of electromagnetic energy by a laser rangefinder under test (12) and providing a first signal in respon... | 01/25/1994 |
| 5228856 | Optics approach to low side compliance simulation A low cost visual simulation system (100) for training simulators is disclosed. Aerial photo transparencies are used directly as image sources without creating a digital data base. The approximately correct image perspective is generated optically by a de... | 07/20/1993 |
| 5212583 | Adaptive optics using the electrooptic effect An adaptive electroopical lens system for use in optical data storage systems, optical phased arrays, laser or other optical projectors, and raster scanning devices, and the like. The invention provides an electrooptical means for scanning an optical beam... | 05/18/1993 |
| 5208766 | Automated evaluation of painted surface quality Human aesthetic evaluation of a finished painted surface, such as an automotive body, is automatically simulated by analyzing a distorted reflected test pattern from the finished surface. Fourier power spectra of the distorted test pattern are generated t... | 05/04/1993 |
| 5132831 | Analog optical processing for the construction of fractal objects An analog optical processor for performing affine transformations and constructing fractal objects. An optical processor for optically performing an iterated affine transformation includes a rotating prism, an imaging lens and a translatable mirror, toget... | 07/21/1992 |
| 5076662 | Electro-optical IFS finder An electro-optical system that implements the self-tiling process of fining proper Iterated Function Systems for modeling natural objects. The system can operate in two different modes, a real-time interactive mode and an automated mode. The purpose of th... | 12/31/1991 |
| 5071209 | Variable acuity non-linear projection system The invention provides a non-linear projection system, which includes a variable acuity non-linear holographic optical element (HOE), and an apparatus for creating the HOE. The projection system comprises a computer, a light valve which projects images ge... | 12/10/1991 |
| 5050992 | Dispersive holographic spectrometer This invention relates to a dispersive holographic spectrometer (12) for analyzing radiation from an infrared source (16). The holographic spectrometer (12) comprises a piezoelectric block (40) having a holographic lens (38) on one face, an array of detec... | 09/24/1991 |
| 5041735 | Miniature infrared test target A miniature infrared test target that comprises a heated four-bar test target operated at a high temperature and a physically separated ambient field operated at ambient temperature. A beamsplitter is disposed relative to the test target and the field in ... | 08/20/1991 |
| 5033203 | Curing oven using Wellsbach conversion An improved curing oven using Wellsbach conversion is disclosed. The present invention 10 provides an improved curing oven which cures materials with electromagnetic radiation in the ultraviolet region. The invention consists of a surface 12 lined with a ... | 07/23/1991 |
| 5009502 | System of holographic optical elements for testing laser range finders A focusing, collimating, and beamsplitting test system for testing laser rangefinders for their beam quality, ranging accuracy, and sight unit alignment. The system includes holographic optical elements in place of conventional mirrors, lenses and beamspl... | 04/23/1991 |
| 5003186 | Stratospheric Welsbach seeding for reduction of global warming A method is described for reducing atmospheric or global warming resulting from the presence of heat-trapping gases in the atmosphere, i.e., from the greenhouse effect. Such gases are relatively transparent to sunshine, but absorb strongly the long-wavele... | 03/26/1991 |
