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| Number | Title | Issue Date |
| 5847480 | Passive magnetic bearing element with minimal power losses Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elem... | 12/08/1998 |
| 5804921 | Soliton quenching NLTL impulse circuit with a pulse forming network at the output An impulse forming circuit is disclosed which produces a clean impulse from a nonlinear transmission line compressed step function without customary soliton ringing by means of a localized pulse shaping and differentiating network which shunts the nonline... | 09/08/1998 |
| 5777775 | Mechanical beam isolator for high-power laser systems A mechanical beam isolator uses rod-shaped elements having a Gaussian configuration to interrupt the path of a beam of photons or particles when the time-scale of the needed interruption is of the order of a microsecond or less. One or more of these rods ... | 07/07/1998 |
| 5777336 | Broadband high resolution X-ray spectral analyzer A broad bandwidth high resolution x-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces ... | 07/07/1998 |
| 5775176 | Separators for flywheel rotors A separator forms a connection between the rotors of a concentric rotor assembly. This separator allows for the relatively free expansion of outer rotors away from inner rotors while providing a connection between the rotors that is strong enough to preve... | 07/07/1998 |
| 5732172 | Laser pulse sampler The Laser Pulse Sampler (LPS) measures temporal pulse shape without the problems of a streak camera. Unlike the streak camera, the laser pulse directly illuminates a camera in the LPS, i.e., no additional equipment or energy conversions are required. The ... | 03/24/1998 |
| 5729374 | Speckle averaging system for laser raster-scan image projection The viewers' perception of laser speckle in a laser-scanned image projection system is modified or eliminated by the addition of an optical deflection system that effectively presents a new speckle realization at each point on the viewing screen to each v... | 03/17/1998 |
| 5723954 | Pulsed hybrid field emitter A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with bo... | 03/03/1998 |
| 5722326 | Magnetic levitation system for moving objects Repelling magnetic forces are produced by the interaction of a flux-concentrated magnetic field (produced by permanent magnets or electromagnets) with an inductively loaded closed electric circuit. When one such element moves with respect to the other, a ... | 03/03/1998 |
| 5705902 | Halbach array DC motor/generator A new configuration of DC motor/generator is based on a Halbach array of permanent magnets. This motor does not use ferrous materials so that the only losses are winding losses and losses due to bearings and windage. An "inside-out" design is used as comp... | 01/06/1998 |
| 5698113 | Recovery of Mo/Si multilayer coated optical substrates Mo/Si multilayers are removed from superpolished ZERODUR and fused silica substrates with a dry etching process that, under suitable processing conditions, produces negligible change in either the substrate surface figure or surface roughness. The two ste... | 12/16/1997 |
| 5689522 | High efficiency 2 micrometer laser utilizing wing-pumped Tm3+ and a laser diode array end-pumping architecture Wing pumping a Tm3+ doped, end pumped solid state laser generates 2 μm laser radiation at high average powers with high efficiency. Using laser diode arrays to end-pump the laser rod or slab in the wing of the Tm3+ absorption band n... | 11/18/1997 |
| 5689363 | Long-pulse-width narrow-bandwidth solid state laser A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low thres... | 11/18/1997 |
| 5684907 | Aerogel-clad optical fiber An optical fiber is surrounded by an aerogel cladding. For a low density aerogel, the index of refraction of the aerogel is close to that of air, which provides a high numerical aperture to the optical fiber. Due to the high numerical aperture, the aeroge... | 11/04/1997 |
| 5660642 | Moving zone Marangoni drying of wet objects using naturally evaporated solvent vapor A surface tension gradient driven flow (a Marangoni flow) is used to remove the thin film of water remaining on the surface of an object following rinsing. The process passively introduces by natural evaporation and diffusion of minute amounts of alcohol ... | 08/26/1997 |
| 5642194 | White light velocity interferometer The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be ... | 06/24/1997 |
| 5612538 | Faraday imaging at high temperatures A Faraday filter rejects background light from self-luminous thermal objects, but transmits laser light at the passband wavelength, thus providing an ultra-narrow optical bandpass filter. The filter preserves images so a camera looking through a Faraday f... | 03/18/1997 |
| 5593248 | Nontoxic chemical process for in situ permeability enhancement and accelerated decontamination of fine-grain subsurface sediments The remediation of heterogeneous subsurfaces is extremely time consuming and expensive with current and developing technologies. Although such technologies can adequately remove contaminants in the high hydraulic conductivity, coarse-grained sediments, th... | 01/14/1997 |
| 5586160 | Automated analysis for microcalcifications in high resolution digital mammograms A method for automatically locating microcalcifications indicating breast cancer. The invention assists mammographers in finding very subtle microcalcifications and in recognizing the pattern formed by all the microcalcifications. It also draws attention ... | 12/17/1996 |
| 5566341 | Image matrix processor for fast multi-dimensional computations An apparatus for multi-dimensional computation which comprises a computation engine, including a plurality of processing modules. The processing modules are configured in parallel and compute respective contributions to a computed multi-dimensional image ... | 10/15/1996 |
| 5548605 | Monolithic microchannel heatsink A silicon wafer has slots sawn in it that allow diode laser bars to be mounted in contact with the silicon. Microchannels are etched into the back of the wafer to provide cooling of the diode bars. To facilitate getting the channels close to the diode bar... | 08/20/1996 |
| 5535049 | Phase and birefringence aberration correction A Brillouin enhanced four wave mixing phase conjugate mirror corrects phase aberrations of a coherent electromagnetic beam and birefringence induced upon that beam. The stimulated Brillouin scattering (SBS) phase conjugation technique is augmented to incl... | 07/09/1996 |
| 5521381 | Contamination analysis unit The portable Contamination Analysis Unit (CAU) measures trace quantifies of surface contamination in real time. The detector head of the portable contamination analysis unit has an opening with an O-ring seal, one or more vacuum valves and a small mass sp... | 05/28/1996 |
| 5515461 | Polarization-independent optical wavelength filter for channel dropping applications The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization... | 05/07/1996 |
| 5495175 | Using electrokinetic phenomena and electrical resistance tomography to characterize the movement of subsurface fluids This invention relates generally to the remote detections of subsurface liquid contaminants using in combination a geophysical technique known as ERT and an EKS. Electrokinetic transport is used to enhance the ability of electrical resistance tomography (... | 02/27/1996 |
| 5495141 | Collimator application for microchannel plate image intensifier resolution improvement A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due... | 02/27/1996 |
| 5490062 | Real-time neural network earthquake profile predictor A neural network has been developed that uses first-arrival energy to predict the characteristics of impending earthquake seismograph signals. The propagation of ground motion energy through the earth is a highly nonlinear function. This is due to differe... | 02/06/1996 |
| 5483469 | Multiple sort flow cytometer A flow cytometer utilizes multiple lasers for excitation and respective fluorescence of identified dyes bonded to specific cells or events to identify and verify multiple events to be sorted from a sheath flow and droplet stream. Once identified, verified... | 01/09/1996 |
| 5475527 | Fourier plane image amplifier A solid state laser is frequency tripled to 0.3 μm. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the ... | 12/12/1995 |
| 5475487 | Aqueous carrier waveguide in a flow cytometer The liquid of a flow cytometer itself acts as an optical waveguide, thus transmitting the light to an optical filter/detector combination. This alternative apparatus and method for detecting scattered light in a flow cytometer is provided by a device whic... | 12/12/1995 |
| 5444241 | Emissivity corrected infrared method for imaging anomalous structural heat flows A method for detecting flaws in structures using dual band infrared radiation. Heat is applied to the structure being evaluated. The structure is scanned for two different wavelengths and data obtained in the form of images. Images are used to remove clut... | 08/22/1995 |
| 5436759 | Cross-talk free, low-noise optical amplifier A low-noise optical amplifier solves crosstalk problems in optical amplifiers by using an optical cavity oriented off-axis (e.g. perpendicular) to the direction of a signal amplified by the gain medium of the optical amplifier. Several devices are used to... | 07/25/1995 |
| 5422607 | Linear phase compressive filter A phase linear filter for soliton suppression is in the form of a laddered series of stages of non-commensurate low pass filters with each low pass filter having a series coupled inductance (L) and a reverse biased, voltage dependent varactor diode, to gr... | 06/06/1995 |
| 5408087 | Image intensifier gain uniformity improvements in sealed tubes by selective scrubbing The gain uniformity of sealed microchannel plate image intensifiers (MCPIs) is improved by selectively scrubbing the high gain sections with a controlled bright light source. Using the premise that ions returning to the cathode from the microchannel plate... | 04/18/1995 |
