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| Number | Title | Issue Date |
| 5801356 | Laser scribing on glass using Nd:YAG laser This invention pertains to a method and apparatus for inscribing a pattern into a surface of a substrate, such as a sheet of glass. The method includes the steps of providing a Nd:YAG laser (12) having a characteristic output wavelength of 1.06 micrometer... | 09/01/1998 |
| 5753375 | Microelectronic device having dark mirror coating with vias therethrough A microelectronic device includes a substrate device and a dark mirror coating overlying one side of the substrate device. The dark mirror coating has a via therethrough to the substrate device. The dark mirror coating has a plurality of alternating layer... | 05/19/1998 |
| 5754072 | Programmable circuitry for the generation of precision low noise clock and bias signals A Clock and Bias Module (CBM 10) includes a low pass filter speed-up switch (U104, U114) to provide both a long time constant and fast settling; bootstrapped power supplies (VR101-104) to provide a wide, programmable output voltage range with overload pro... | 05/19/1998 |
| 5750202 | Preparation of gold-coated molybdenum articles and articles prepared thereby A gold-coated molybdenum article (30) is made by furnishing a substrate (32) made of pure molybdenum or an alloy of molybdenum, and preparing a slurry of gold powder, acrylic binder, and acetone liquid carrier. The slurry is applied to a portion of a surf... | 05/12/1998 |
| 5734156 | Optical device assembly and its preparation using metallic bump bonding and a stand-off for bonding together two planar optical components An optical device assembly includes a planar optical filter and a planar sensor having an optically active area. The optical filter and the sensor are joined together with a gap therebetween by a standoff structure extending between the optical filter and... | 03/31/1998 |
| 5731621 | Three band and four band multispectral structures having two simultaneous signal outputs A solid state array has a plurality of radiation detector unit cells, wherein each unit cell includes a bias-selectable two color photodetector in combination with either a second bias-selectable two color detector (10, 11) or a single photodetector (10',... | 03/24/1998 |
| 5729639 | Sensor system having detector to detector responsivity correction for pushbroom sensor A responsivity calibration system for use with an array of detectors. The system includes a first mechanism for changing the orientation of the detector array from the first orientation, during an operational mode, to a second orientation, during a calibr... | 03/17/1998 |
| 5713610 | Semi-permanent vacuum closure with multiple retubulation capability A vacuum system (20) includes an enclosure (22) having a vacuum-tight wall (26) and an internally threaded aperture (66) through the wall (26). A tip-off fitting (24) has a base (50) with a bore (52) therethrough, a hollow tube (62) fixed to the base (50)... | 02/03/1998 |
| 5706092 | High resolution differential spectrometry system A differential spectrometry system detects very narrow-band spectral features, while providing much higher optical transmittance and signal-to-noise ratios than prior optical-filter-based spectrometer systems. A plurality of light detectors (10a, 10b) det... | 01/06/1998 |
| 5689106 | Optical device assembly having a metallic bump bonding together two planar optical components, and its preparation An optical device assembly includes a planar optical filter and a planar sensor having an optically active area. The optical filter and the sensor are joined together with a gap therebetween by a metallic bump extending between the optical filter and the ... | 11/18/1997 |
| 5689087 | Integrated thermopile sensor for automotive, spectroscopic and imaging applications, and methods of fabricating same A highly integrated thermal sensor (10) is responsive to radiation having wavelengths within a predetermined band of wavelengths. The sensor, which may be a thermopile, is comprised of a substrate (16) comprised of at least one semiconductor material. The... | 11/18/1997 |
| 5672545 | Thermally matched flip-chip detector assembly and method A flip-chip assembly and method for reducing the stress in its metal interconnections resulting from thermal mismatch includes a detector that has a radiation sensitive circuit on a substrate that is flip-chip connected to a layer of semiconductor materia... | 09/30/1997 |
| 5670817 | Monolithic-hybrid radiation detector/readout Methods are disclosed for fabricating a monolithic array of radiation detectors and associated readout circuits, as are monolithic arrays fabricated by the methods. One method includes the steps of (a) providing a first substrate (10) having a first major... | 09/23/1997 |
| 5663564 | Photovoltaic detector with integrated dark current offset correction An integrated photovoltaic detector includes a reference photovoltaic detector and an active photovoltaic detector in a series connection. The reference detector produces a dark current that opposes the active detector's dark current. The active detector ... | 09/02/1997 |
| 5646426 | Contact metal diffusion barrier for semiconductor devices A photoresponsive device (10) includes a body comprised of semiconductor material comprised of elements selected from Group IIB-VIA; and at least one electrically conductive contact pad (20) formed over a surface of the semiconductor material. The at leas... | 07/08/1997 |
| 5646437 | Indium antimonide (InSb) photodetector device and structure for infrared, visible and ultraviolet radiation The light receiving or back-side surface (22) of an indium antimonide (InSb) photodetector device (10) substrate (12) is cleaned to remove all native oxides of indium and antimony therefrom. A passivation layer (26) is then formed on the surface (22) of a... | 07/08/1997 |
| 5629997 | Method and apparatus for coupling laser diode beams to optical fibers and achieving high power densities An optical coupler for coupling energy from a laser diode bar is disclosed. The coupler includes multiple rectangular optical fibers that each have a cylindrical lens which is an integral part of each fiber end. The fiber ends are held in a fixed spatial ... | 05/13/1997 |
| 5627377 | Single carrier-type solid-state radiation detector device A three terminal solid-state ionizing radiation detector (10) includes a first layer (18) of a substantially intrinsic Group II-VI compound semiconductor material, such as CdZnTe. The first layer is responsive to incident ionizing radiation for generating... | 05/06/1997 |
| 5624709 | High resolution differential spectrometry system A differential spectrometry system detects very narrow-band spectral features, while providing much higher optical transmittance and signal-to-noise ratios than prior optical-filter-based spectrometer systems. A plurality of light detectors (10a, 10b) det... | 04/29/1997 |
| 5616925 | Gamma ray detector with improved resolution and method of fabrication Gamma ray detectors (20, 130) are provided with a detector layer (30) that is formed of Hgx Cd1-x-y Zny Te, wherein 0 | 04/01/1997 |
| 5602511 | Capacitive transimpedance amplifier having dynamic compression A Compressing Capacitively Coupled Transimpedance Amplifier (CCTIA) circuit (10) has an amplifier (AMP) with a variable capacitance feedback network (C1, C2, C3, Q1, Q2) coupled between a current receiving amplifier input node and an amplifier output node... | 02/11/1997 |
| 5600868 | Deployment hinge A hinge (20) includes two hinge plates (22, 24) and a connecting hinge pin (32). A coil spring (48) supported on a bushing (44) overlies the hinge pin (32), which is free to move along its longitudinal axis (30). A cam follower (42) on the hinge pin (32) ... | 02/11/1997 |
| 5598966 | Brazed lower vacuum housing for a dewar A lower vacuum housing (34) of a sensor dewar (26) is fabricated in a single brazing operation from ceramic and metallic components. The components are assembled with ceramic-to-metal interfaces and metal-to-metal interfaces. Brazing is accomplished by ac... | 02/04/1997 |
| 5595514 | Feedthrough pin and process for its preparation, and electrical feedthrough made therewith A feedthrough (34) is formed of a feedthrough plate (44) having at least one bore (46) therethrough and a feedthrough pin (48) hermetically sealed into the bore (46). The feedthrough pin (48) includes an elongated pin (50) having an axis of elongation (52... | 01/21/1997 |
| 5591975 | Optical sensing apparatus for remotely measuring exhaust gas composition of moving motor vehicles A light source radiates an infrared beam that passes through a chopper, a calibration cell and the exhaust plume of a motor vehicle passing in front of the source. A photosensor assembly includes a plurality of photodetectors which are spaced closely adja... | 01/07/1997 |
| 5581084 | Simultaneous two color IR detector having common middle layer metallic contact An array of dual-band HgCdTe radiation detectors (10) wherein individual detectors include a first layer (14) having a first type of electrical conductivity and a bandgap selected for absorbing radiation within a first spectral band. The radiation detecto... | 12/03/1996 |
| 5570178 | Scanning imaging system having reduced detected signal aliasing in cross scan direction A system for receiving electromagnetic energy with reduced signal aliasing in the cross-scan direction. The system is adapted to be mounted on a spacecraft or an aircraft for movement over a surface in the cross-scan direction and has a sensor for receivi... | 10/29/1996 |
| 5567975 | Group II-VI radiation detector for simultaneous visible and IR detection A photovoltaic diode unit cell (10) includes a first layer (14) having a first type of electrical conductivity and a second layer (16) of Group II-VI material having a second type of electrical conductivity that differs from the first type. The first laye... | 10/22/1996 |
| 5563405 | Staring IR-FPA with on-FPA adaptive dynamic range control electronics An adaptive dynamic range control circuit architecture is disclosed that enables an IR-FPA (10) to achieve a higher dynamic range. The circuit architecture significantly reduces a resolution required for an analog-to-digital converter (ADC 24) that conver... | 10/08/1996 |
| 5563420 | Integrated ultraviolet and infrared source with minimal visible radiation A single integrated source of infrared and ultraviolet energy with minimal visible radiation therein. The invention (10) includes a first source of infrared and visible radiation (12) and a second source of ultraviolet and visible radiation (14). In a spe... | 10/08/1996 |
| 5561521 | Two-band Fourier transform spectrometer (FTS) with dichroic Michelson mirrors Two dichroic mirrors (26, 30) and a dichroic beamsplitter (36) are introduced into the conventional Michelson Fourier transform spectrometer to accommodate two spectral bands. A conventional Michelson Fourier transform spectrometer (FTS) uses two mirrors ... | 10/01/1996 |
| 5559336 | Integrated LPE-grown structure for simultaneous detection of infrared radiation in two bands A radiation detector (1) unit cell (10) includes an n-p+ LWIR photodiode that is vertically integrated with a p+-n MWIR photodiode in a n-p+-n structure. Electrical contact is made separately to each of these layers in order to simultaneously detect both ... | 09/24/1996 |
| 5554845 | Method and apparatus to effectively eliminate optical interference structure in detector response A method and apparatus are provided to eliminate spectral interference variation contained in optical signals transmitted to an optical detector or array of optical detectors, the spectral variation deriving from the presence of a layer deposited on the d... | 09/10/1996 |
| 5545897 | Optically-based chemical detection system An in-situe chemical gas or fluid analyzer for vehicles, industrial, environmental and process control applications. As applied to a vehicle (1) having an internal combustion engine, the analyzer includes: (i) a source of electromagnetic radiation (14, 16... | 08/13/1996 |
| 5545896 | Optically immersed semiconductor photodetectors Optical immersion of a semiconductor photodetector to a plano-convex lens is obtained with a spring arranged to urge the photodetector to abut the lens. To facilitate alignment of the detector and the lens, the spring defines, in one embodiment, a convex ... | 08/13/1996 |
| 5512511 | Process for growing HgCdTe base and contact layer in one operation A method for fabricating a two layer epitaxial structure by a liquid phase epitaxy (LPE) process, the structure being comprised of a Group II-VI semiconductor material. The method includes the steps of providing an LPE growth chamber that contains a molte... | 04/30/1996 |
| 5502300 | Compound optically tipped detectors A focal plane array (10) of radiation detectors (10b) has all features inclined with respect to an illuminating beam of radiation. That is, all features that would be orthogonally disposed with respect to an incoming wavefront are instead inclined to the ... | 03/26/1996 |
| 5477173 | Ultra low power gain circuit (UGC) An ultra low power gain circuit (UGC) implements a unique operational mode of a source follower circuit, and enables programmable gains greater than unity. A MOSFET has a gate terminal coupled to an input capacitance (Cin). A potential at a drain of the M... | 12/19/1995 |
| 5477420 | Interior circuit board supports and method Interior circuit card supports and a method that facilitate fast and simple Assembly and disassembly of the circuit cards, and provide both interior and peripheral card support, are disclosed. A plurality of circuit cards 32a-32n, each having at least one... | 12/19/1995 |
| 5466953 | Denuded zone field effect photoconductive detector A compositionally graded HgCdTe radiation detector (10) is constructed to have a high purity "denuded zone" (Region 2) that is formed adjacent to a radiation absorbing region (Region 1). The compositional grading results in an internally generated electri... | 11/14/1995 |
