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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 6265731 | Ohmic contacts for p-type wide bandgap II-VI semiconductor materials A semiconductor device comprises an active element and contacts that permit low-resistance external electrical connections. The active element includes an active layer formed from group II-VI elements, an n-doped layer on one side of the active it layer, ... | 07/24/2001 |
| 6126520 | Fixture and methodology for coupling an optical component to a machine The present invention provides a fixture (10) for coupling an optical component (12) to a machining apparatus through the use of a vacuum. The fixture includes a base (34) having means for coupling the fixture (10) to a machine and defining an aperture (5... | 10/03/2000 |
| 6023063 | Infrared detector with reduced optical signature Absorption coatings utilized in a detector array reduces the optical signature of an infrared detector or detector array by reducing the undesirable reflections from exposed metal surfaces and non-planar surface features within the photodetector array. Th... | 02/08/2000 |
| 5959727 | System and method for discriminating between direct and reflected electromagnetic energy An energy beam threat discrimination system (110) adapted for use with laser beam energy (134). The system (110) includes an first detector (114) for detecting a first laser signal. A second detector (112) detects a coherent laser signal. A timer circuit ... | 09/28/1999 |
| 5955806 | Torque motor with combined shield ring and rotor ring A torque motor includes an annular, cylindrically symmetric support base, and a plurality of electromagnet coils affixed to the support base at regular intervals around a cylindrical circumference of the support base. There is additionally an annular, gen... | 09/21/1999 |
| 5940203 | High-energy-burst deformable mirror An assembly comprises a base (16) and a thin optical substrate (10) having a light reflective first surface (12) and an opposite back surface (14). At least one actuator (20) is mounted to said base and has a moving end (21) associated with the back surfa... | 08/17/1999 |
| 5936268 | Epitaxial passivation of group II-VI infrared photodetectors An array 1 of photodiodes 2 is comprised of a Group II-VI material, such as HgCdTe, which may be selectively doped to form a plurality of diode junctions. Array 1 is comprised of a plurality of photodiodes 2 which are disposed in a regular, two dimensiona... | 08/10/1999 |
| 5929992 | Compact interferometric test system for ellipses A method and apparatus for testing elliptical mirrors is provided which reduces the length of the test apparatus by half, provides for precise location of the focus of the interferometer beam, and precise measurement of the distance between foci of the el... | 07/27/1999 |
| 5925883 | Staring IR-FPA with CCD-based image motion compensation An IR focal plane array (IR-FPA) includes an IR radiation detector (11a) having a plurality of IR radiation responsive photodetectors (PDs) and a readout integrated circuit (11) that includes a plurality of unit cells arranged in an N×M matrix. Each unit... | 07/20/1999 |
| 5921461 | Vacuum package having vacuum-deposited local getter and its preparation A vacuum package (20) is fabricated by providing a package base (22) with a device (32) affixed to the interior of the package base (22), and a package lid (42). An activatable getter material (54) is deposited onto a preselected region of either the inte... | 07/13/1999 |
| 5917644 | Integral high-energy-button deformable mirror An assembly (22) comprises an optical substrate having a light reflective first surface (12) and an opposite back surface (14). At least one actuator stem (25) having a moving end (21) is provided and is associated with the back surface of the optical sub... | 06/29/1999 |
| 5917560 | Low cost color cube for liquid crystal light valve projector A liquid crystal projector and color beamsplitter that comprises a single X-cube beamsplitter that transmits both incident and exit light beams. One half of the beamsplitter divides incident white light into three primary colors, and the other half of the... | 06/29/1999 |
| 5906861 | Apparatus and method for depositing borophosphosilicate glass on a substrate A borophosphosilicate glass is deposited on a substrate (50) by heating the substrate (50), and contacting the substrate with a mixture of the gases tetramethylcyclotetrasiloxane, trimethylborate, trimethylphosphite, and oxygen, without the presence of a ... | 05/25/1999 |
| 5898520 | Three-dimensional imaging system having a polarizing filter A three-dimensional stereovision imaging system (20) adapted for use with a polarizing filter (22). The inventive system (20) includes a stereovision projector (24) for generating a projection (26) of alternating left and right images. A polarizer (30) po... | 04/27/1999 |
| 5895998 | Piezoelectric drive circuit A drive circuit (18) is provided that utilizes a power supply (30) to generate an output voltage that effects a precise displacement in a physical device. The drive circuit (18) includes storage circuitry (26) having a capacitive load (54) for storing the... | 04/20/1999 |
| 5880510 | Graded layer passivation of group II-VI infrared photodetectors A Group II-VI IR photodiode 10 has a passivation layer 16 overlying at least exposed surfaces of the p-n diode junction 15, the passivation layer being a compositionally graded layer comprised of Group II atoms diffused into a surface of the p-n diode jun... | 03/09/1999 |
| 5880889 | Three color dichroic beamsplitter for separating or combining unpolarized light A beamsplitter (70) for separating a beam of light (48, 90, 92) into three frequency bands (94, 96, 98) corresponding to a first color (94), a second color (98), and a third color (96) adapted for use with a beam of white light (92). The inventive beamspl... | 03/09/1999 |
| 5867521 | Curved grating surface-emitting distributed feedback laser Surface-emitting distributed feedback (SEDFB) lasers having a curved grating with a shape that produces good beam quality. A preferred shape is one for which the grating curves away from the center of the gain region of the laser. The use of the curved gr... | 02/02/1999 |
| 5867272 | Interferometric self aligning fixture with parabolic and flat reflective surfaces The present invention provides a lens holder (14) for a lens under test (26) in an in-line hologram interferometric test apparatus (10) which includes a flat reflective surface (34) for rotationally positioning the lens under test (26) and a parabolic ref... | 02/02/1999 |
| 5864402 | Holder for holographic testing of aspherical lenses with spherical and flat reflective surfaces The present invention provides a lens holder (14) for a lens under test (26) in an in-line hologram interferometric test apparatus (10) which includes a flat reflective surface (34) for rotationally positioning the lens under test and a spherical reflecti... | 01/26/1999 |
| 5857383 | Heavy duty roller nut assembly for power drive applications A linear displacement device (1) is provided with a lead screw (24) having a helical threaded portion (74) and a roller nut assembly (10). The roller nut assembly (10) includes a housing (50) having openings (52, 54) for receiving the lead screw (24) ther... | 01/12/1999 |
| 5835208 | Apparatus to measure wedge and centering error in optical elements The present invention provides a measuring apparatus (10) for centering and determining wedge error of an optical element (12) under test. The measuring apparatus (10) preferably includes a lens holder (16) for supporting the optical element (12) to be te... | 11/10/1998 |
| 5827771 | Readout backside processing for hybridization This invention pertains to a method for processing readout integrated circuits, and to a readout integrated circuit (10) that is processed in accordance with the method. The method includes a first step of providing a plurality of individual readout circu... | 10/27/1998 |
| 5828497 | Dichroic pentaprism for separating or combining frequency bands of electromagnetic energy A system (50) for separating and combining frequency bands (64, 74, 78) from a beam (62) of electromagnetic energy adapted for use with a beam of white light (62) having a first (64), second (74) and third (78) frequency band. The inventive system (50) in... | 10/27/1998 |
| 5825493 | Compact high resolution interferometer with short stroke reactionless drive An interferometer or spectrometer having a short stroke reactionless drive mechanism is disclosed. The interferometer includes a housing, and a beamsplitter for reflecting an input beam along a fixed optical path and for transmitting the input beam along ... | 10/20/1998 |
| 5821992 | Focal plane array capacitance cancellation A video buffer of a focal plane array (FPA) electrical interface module is presented for providing output capacitance cancellation. The buffer has a capacitance cancellation stage (50) for receiving an analog signal produced by a FPA. The cancellation sta... | 10/13/1998 |
| 5818631 | Electrically conducting, directly bonded infrared windows An electrically conductive infrared (IR) window (10) has high transmittance at IR wavelengths and includes an electrically conductive protective layer (14) which is direct bonded to a substrate (16) at room temperature without adhesive therebetween. The p... | 10/06/1998 |
| 5815268 | Lithographic lens wavefront and distortion tester A measurement device (2) for measuring a collimated wave front through a lithographic lens includes a radiant energy source (4), a lens group (6) for collimating light emitted from said radiant energy source and directing said collimated light (7) toward ... | 09/29/1998 |
| 5808329 | Low light level imager with extended wavelength response employing atomic bonded (fused) semiconductor materials An imaging device (10, 10') has a plurality of unit cells (11) that contribute to forming an image of a scene. The imaging device includes a layer of wide bandgap semiconductor (18) material (e.g., silicon) having photogate charge-mode readout circuitry (... | 09/15/1998 |
| 5808350 | Integrated IR, visible and NIR sensor and methods of fabricating same An imaging device (10) has a plurality of unit cells that contribute to forming an image of a scene. The imaging device includes a layer of semiconductor material (16), for example silicon, that has low noise photogate charge-mode readout circuitry (20, 2... | 09/15/1998 |
| 5804823 | Bismuth layered structure pyroelectric detectors This invention teaches a method for fabricating an array (1) of pyroelectric detectors (10), and further teaches an array (1) of pyroelectric detectors (10) that include a bismuth layered compound. The array has a substrate (12) and a plurality of pyroele... | 09/08/1998 |
| 5803570 | Calibration system and method for display optical systems A calibration system and method for a display optical system including a projector and a projection screen. A calibration camera is inserted between the projector and the screen to receive the radiation directly from the projector. The image focused by th... | 09/08/1998 |
| 5789735 | Optical system for reformatting a line image An optical system is coupled between a one-dimensional line image and a two-dimensional detector array. The line image is segmented and reimaged onto respective image cells of the detector array, each image cell being a row of detector cells. The optical ... | 08/04/1998 |
| 5767511 | Mean cluster size determination using water capture Clusters, such as Argon gas clusters, provided by a cluster source are doped in a water pick-up cell, and subsequent electron impact ionization of the doped clusters in a mass spectrometer or gas analyzer produce ionized cluster fragments that retain wate... | 06/16/1998 |
| 5760793 | Low latency update of graphic objects in an air traffic control display A video display system that includes a video display for displaying a raster image comprised of an array of pixels arranged in rows and columns, a video memory for storing pixel raster image data for the raster image, a bit-map memory, and a processor for... | 06/02/1998 |
| 5756991 | Emissivity target having a resistive thin film heater An electro-optical target and test apparatus having an improved resistive heating element. The resistive heating element comprises a resistive thin film coating layer, such as an indium tin oxide resistive coating layer, a resistive thin film semiconducto... | 05/26/1998 |
| 5754451 | Preventative maintenance and diagonstic system A maintenance system for a machine (12) controlled by a programmable logic controller (14) having a memory (20) which stores input data received from the machine (12) and output data communicated to the machine (12). The maintenance system includes a comp... | 05/19/1998 |
| 5751005 | Low-crosstalk column differencing circuit architecture for integrated two-color focal plane arrays An integrated two-color staring focal plane array is comprised of rows and columns of photodetector unit cells (10), each being capable of simultaneously integrating photocurrents resulting from the detection of two spectral bands. A readout circuit (20) ... | 05/12/1998 |
| 5747804 | Method and apparatus for sensing infrared radiation utilizing a micro-electro-mechanical sensor Apparatus (102, 202, 302) and method for tunneling rate infrared detection devices formed on a single substrate (100). A counter electrode (104, 207) having a plurality of portions extending from the substrate (100) with the counter electrode (104, 207) s... | 05/05/1998 |
| 5745278 | Innovative deformable mirror actuator configuration An assembly comprises a base (12,12') and a thin optical substrate (44) having a light reflective first surface (43) and an opposite back surface (45). A coupling medium (8,8) couples the back surface (45) of said optical substrate and the base to one ano... | 04/28/1998 |
