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| Number | Title | Issue Date |
| 5600123 | High-resolution extended field-of-view tracking apparatus and method An optical tracking system and method are disclosed. The optical tracking system includes a scanning mirror which scans and receives images within a field of view scannable by the mirror. An optical system receives images from the scanning mirror and dire... | 02/04/1997 |
| 5488371 | Radio frequency absorbing windows A light transparent window is fabricated to absorb a band of radio frequency (RF) energy with minimal RF transmission and reflection. The window is formed from a series of parallel electrically conductive sheets separated by absorbing cavities. The conduc... | 01/30/1996 |
| 5434697 | Deformable mirror system having replaceable actuators A deformable mirror system comprises a reflective face sheet, substrate, positioned behind the face sheet, having actuator bore holes extending entirely through the substrate. Actuator assemblies for deforming the face sheet are positioned in a different ... | 07/18/1995 |
| 5424827 | Optical system and method for eliminating overlap of diffraction spectra An optical system and a method for separating overlapping spectra from a diffraction grating and an imaging spectrometer with increased free spectral range are disclosed. The light from a diffraction grating consists of multiple spectra overlapping each o... | 06/13/1995 |
| 5410407 | Large aperture mirror testing apparatus and method A combination of hindle shell and hindle sphere test bodies are employed to test optical surface quality or optical figure of a test optic having a convex hyperboloid reflective surface. A hindle sphere or array of hindle spheres is used to test an outer ... | 04/25/1995 |
| 5373137 | Multiple-line laser writing apparatus and method A laser writing apparatus includes a laser light source which directs an expanded beam of laser light onto a two-dimensional phase grating. The phase grating splits the beam into a two-dimensional array of individual bundles of collimated light or beamlet... | 12/13/1994 |
| 5371369 | Conformal cold baffle for optical imaging systems A cooled stray light baffle for use in an imaging system such as an infrared camera is disclosed. The baffle includes a tapered shroud portion which is shaped to just enclose the envelope of light rays which pass through the baffle. That is, space between... | 12/06/1994 |
| 5296972 | Non-polarizing image rotation apparatus and method An optical system and method for rotating an image of an object is disclosed. The device consists of a plurality of optical surfaces for either reflecting or refracting the light along an optical path through the device. The optical surfaces divide the op... | 03/22/1994 |
| 5278402 | Real-scene dispersion sensor detecting two wavelengths and determining time delay An optical dispersion sensor for sensing optical dispersion introduced by the atmosphere in near real-time and an optical system using the dispersion sensor to compensate for atmospheric dispersion are described. The input signal to the dispersion sensor ... | 01/11/1994 |
| 5242709 | Method for hardening zinc selenide and zinc sulfide A body resistant to abrasion and transmissive to light is provided which is formed essentially of zinc sulfide or zinc selenide having incorporated therein small amounts of tellurium. The body can form a layer over zinc sulfide, zinc selenide, or a conven... | 09/07/1993 |
| 5239404 | Large angle reflective scanning system and method A system and method for optically scanning a scene are disclosed. The system is rotated about a pitch axis and a roll axis to provide the desired scanning capability. The system consists of a primary mirror, a secondary mirror, a tertiary mirror and a fol... | 08/24/1993 |
| 5229592 | Real scene imaging system pupil phasing method and apparatus A method and apparatus for phasing the apertures of a multiple-aperture imaging system is disclosed. An imaging system gathers light in either a scanning or a staring mode from a natural or real scene without artificial light sources. The spatial frequenc... | 07/20/1993 |
| 5214882 | Vacuum activated tool for the fabrication of optical surfaces A tool is disclosed for accurately and rapidly finishing optical surfaces. The tool has a plurality of lapping buttons attached to its face for contacting the optical surface to be finished. The lapping buttons are held to the surface of the workpiece by ... | 06/01/1993 |
| 5122424 | Abrasion-resistant, infrared transmitting optical components A body resistant to abrasion and transmissive to light is provided which is formed essentially of zinc sulfide or zinc selenide having incorporated therein small amounts of tellurium. The body can form a layer over zinc sulfide, zinc selenide, or a conven... | 06/16/1992 |
| 5094519 | Cooled laser mirror having adaptive flow control A adaptive flow-control regulator is disclosed for use in controlling the circulation of cooling fluid through in a cooled laser mirror. The adaptive flow-control regulator utilizes a temperature-sensitive spring to control the movement of a plunger with ... | 03/10/1992 |
| 5076700 | Bonded lightweight mirror structure A lightweight mirror is disclosed in which the core and backsheet of the mirror are constructed from a single piece of glass. The core is lightweighted by drilling or otherwise forming a series of pockets in the core with the machining process proceeding ... | 12/31/1991 |
| 5074654 | Hydraulic actuators for optical systems Hydraulic actuators are disclosed which are useful for controlling the reflecting surface of deformable mirrors or positioning the segments a segmented reflecting mirror. In one embodiment electrodistortive actuators are used to control movement of a pist... | 12/24/1991 |
| 5072104 | Achromatic null lens A wavefront correction system is provided which uses an achromatic null lens to correct various aberrations introduced in a spherical wavefront when the wavefront is reflected off a non-spherical surface, particularly a parabola. Chromatic aberration, inc... | 12/10/1991 |
| 5055445 | Method of forming oxidic high Tc superconducting materials on substantially lattice matched monocrystalline substrates utilizing liquid phase epitaxy A method of forming an epitaxial layer of an oxidic high Tc superconductor on a substantially lattice matched monocrystalline substrate is described. The film is formed by liquid phase epitaxy utilizing a melt containing a nutriment composed of... | 10/08/1991 |
| 5040860 | Momentum-balance mechanism for use with a scan mirror or other component A momentum balance-mechanism is disclosed in which a mirror or other object which must be rapidly dithered around tip and tilt axes is supported above a base. The momentum balance-mechanism permits rapid dithering of the mirror or other mechanism while mi... | 08/20/1991 |
| 5037190 | Fusible link actuators for deformable mirrors A construction for a deformable mirror is disclosed in which each of the electrodistortive actuators used to selectively impart deformations to the mirror's reflecting facesheet are mechanically fastened to the facesheet and may be disengaged from the fac... | 08/06/1991 |
| 5002378 | Light weight cooled mirror A lightweight cooled mirror is disclosed in which cooling of the mirror's reflecting surface is provided by a two-phase fluid contained in an enclosed chamber behind the reflecting surface. The chamber includes an evaporator section in contact with the re... | 03/26/1991 |
| 4958931 | System utilizing an achromatic null lens for correcting aberrations in a spherical wavefront A wavefront correction system is provided which uses an achromatic null lens to correct various aberrations introduced in a spherical wavefront when the wavefront is reflected off a non-spherical surface, particularly a parabola. Chromatic aberration, inc... | 09/25/1990 |
| 4934803 | Differential pressure deformable mirror A deformable mirror construction is disclosed in which a difference in pressure between the front reflecting surface of the deformable mirror and an enclosed chamber behind the mirror's reflecting surface is used to restore the reflecting surface to its u... | 06/19/1990 |
| 4932119 | Method of making standard electrodisplacive transducers for deformable mirrors A construction for electrodisplacive transducers for use in deformable mirrors in which the transducer is assembled from two or more segments of electrodisplacive material. Each segment contains multiple stacked layers of electrodisplacive material which ... | 06/12/1990 |
| 4923302 | Method and apparatus for calibrating deformable mirrors having replaceable actuators An apparatus and method for calibrating deformable mirrors having replaceable actuators are disclosed. The mirror to be calibrated is mounted on an x-y table to permit selective movement of the mirror between an actuator position adjustor means and a sens... | 05/08/1990 |
| 4906087 | Magneto-retractive deformable mirror A construction for a deformable mirror is disclosed in which permanent magnets are used to both retain actuators used to selectively deform the faceplate's reflecting surface within the mirror's base and to retain the mirror's faceplate to each of the act... | 03/06/1990 |
| 4902102 | Aspheric optical test plate assembly An aspheric optical test plate assembly is disclosed which permits a qualitative comparison to be made between the surface contour of a known area of an aspheric optical element and the surface contour of an area on the aspheric optical element which shou... | 02/20/1990 |
| 4871220 | Short wavelength pass filter having a metal mesh on a semiconducting substrate A short pass filter is disclosed which exhibits high transmission in the infrared and/or visible region of the electromagnetic spectrum and which has high rejection in the microwave portion of the spectrum. The filter generally consists of a substrate of ... | 10/03/1989 |
| 4804269 | Iterative wavefront measuring device A wavefront reconstruction and measuring system detects incoming light waves with a wavefront sensor having an array of photodetectors. The sensor provides a data processor with signals indicative of phase differences between sample points on the wavefron... | 02/14/1989 |
| 4763991 | Adjustable six degree of freedom mount for optical components An adjustable mount for optical components is disclosed which permits a component held by the mount to be adjusted with six degrees of freedom. The mount includes means for locking the components of the mount to prevent vibration from affecting the adjust... | 08/16/1988 |
| 4754331 | Digitizer for an image processing system An analog video signal obtained from a television camera having a 4:3 aspect ratio is converted into a square array of N×N square pixels corresponding to the pixel content in the center of the television camera by apparatus which includes an analog-to-di... | 06/28/1988 |
