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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 8116003 | Method and system for managing light at an optional interface An interface between two different optical materials can comprise a stack of thin film layers that manage light incident on that interface. One of the optical materials can have a first composition and a first refractive index, while the other optical material can h... | 02/14/2012 |
| 7907340 | Integrated narrow bandpass filter array and a method for fabrication thereof Taught herein is an integragted narrow bandpass filter array and a method of its fabrication. The filter array is a Fabry-Perot type of filter array, wherein the pass band changes with the thickness of the spacer layer. The integrated filter array comprises a substr... | 03/15/2011 |
| 7633681 | Multilayer interference filter for photochromic lenses A multi-layer thin film is provided preferably for use with photochromic lenses, wherein the thin film comprises a plurality of layers, preferably including dielectric layers, selected and arranged so as to reflect less than about 6 percent of the UVA rays in a rang... | 12/15/2009 |
| 7439984 | Image signal processing method, image signal processing apparatus, and image displaying apparatus An image signal processing method for performing nonlinear compensation on an image signal to be fed into a display device (103). The characteristics of nonlinear compensation are changed according to the brightness of a place in which the display device (... | 10/21/2008 |
| 7436596 | Optical sensor based on surface electromagnetic wave resonance in photonic band gap materials and method for using same A sensing method and apparatus using photonic band gap multilayered material. Photonic band gap multi-layers are formed from alternating layers of higher refractive index and lower refractive index materials, and may be deposited or disposed on a optically transpare... | 10/14/2008 |
| 7394986 | Flat top optical filtering component The invention relates to wavelength-selective optical filters for allowing light of a narrow optical spectral band, centered around a wavelength (λc) to pass through them, while reflecting the wavelengths lying outside this band. According to the inventi... | 07/01/2008 |
| 7379244 | Anti-reflection film The present invention is dedicated to a cost reduced anti-reflection film of a multi-lamination structure that is reduced in number of layers and increased in thickness of the same for the purpose of facilitating the total control of the film thickness and that can ... | 05/27/2008 |
| 7367691 | Omnidirectional one-dimensional photonic crystal and light emitting device made from the same A light emitting device includes a light-generating unit for generating a primary light in a first wavelength range, a wavelength-converting member connected to the light-generating unit for converting a portion of the primary light into a secondary light in a secon... | 05/06/2008 |
| 7362515 | Electro-optical device, film member, laminated film, low refractivity film, laminated multilayer film and electronic appliances The invention provides an electro-optical device capable of improving a high light projection efficiency to the outside while maintaining sealing ability for providing high recognition of vision. An organic electroluminescence display can include a light permeable s... | 04/22/2008 |
| 7355792 | CWDM filter for eliminating noise A CWDM filter of the present invention comprises a substrate; a first portion formed on the substrate having at least two first stacking structures; a second portion superposed on the first portion including at least two second stacking structures; and a first match... | 04/08/2008 |
| 7336421 | Optical system with anti-reflection coating In an imaging optical system, which comprises a plurality of optical members and an aperture diaphragm, an anti-reflection coating is provided selectively on one or more surfaces of light-transmitting members that are concave with respect to the aperture diaphragm. ... | 02/26/2008 |
| 7317576 | Dichroic filters on flexible polymer film substrates Now, according to the present invention, dichroic filters are provided that incorporate a flexible polymer film substrate, such as poly(ethylene naphthalate), onto which a dielectric and/or reflective metal stack has been formed. Filters of the present invention are... | 01/08/2008 |
| 7304800 | Optical tunable filter and method of manufacturing the same An optical tunable filter is provided including a first substrate having light transmission properties and having a movable part and a supporting member that movably supports the movable part and having a smaller thickness than the movable part, a second substrate h... | 12/04/2007 |
| 7298550 | Dichroic mirror, fluorescence filter set, and fluoroscopy apparatus The invention provides a dichroic mirror having a transmission characteristic in which a step due to splitting of P-polarized and S-polarized light can be reduced and having a fluorescence-transmitting band extending to long wavelengths. The invention also provides ... | 11/20/2007 |
| 7294404 | Graded photocatalytic coatings The invention provides graded photocatalytic coatings. In one aspect, the invention provides a substrate carrying a photocatalytic coating that includes a first graded film region and a second graded film region. The first graded film region has a substantially cont... | 11/13/2007 |
| 7283303 | Conductive anti-reflection coating A conductive anti-reflection coating has a surface quarterwave layer that is broken up into smaller portions by inserting one or more thin layers of conductive material in the dielectric material. The resulting stack of alternating layers of a dielectric material an... | 10/16/2007 |
| 7280265 | Interferometric modulation of radiation An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their inherent color shift may be compensated for using several optical compensati... | 10/09/2007 |
| 7267880 | Presence indicator for removable transparent film A substrate having a surface carrying a removable transparent film that can be removed by the surface by a desired washing process, and removable presence indicator associated with the removable transparent film, the presence indicator being removable by the same de... | 09/11/2007 |
| 7256948 | Anti-reflection coating, and optical element and optical system with anti-reflection coating An anti-reflection coating is formed on an optical surface of an optical member for reducing the amount of light rays reflected from the optical surface. For light rays in a wavelength range from 400 nm to 700 nm, the anti-reflection coating has a reflectance of 0.5... | 08/14/2007 |
| 7256938 | Method for making large scale multilayer dielectric diffraction gratings on thick substrates using reactive ion etching Methods of fabricating large size, high performance multilayer diffraction gratings having a thick substrate that take advantage of reactive ion etching during the fabrication process are provided herein. In one implementation, a method of making a multilayer diffra... | 08/14/2007 |
| 7251074 | Projection screen and method for manufacturing the same A projection screen and method of manufacturing provides clear images regardless of the brightness of the environment within which the projection screen is used. The projection screen includes an optical thin film comprised of a multilayer dielectric having alternat... | 07/31/2007 |
| 7239464 | Absorption type multi-layer film ND filter An absorption type multi-layer film ND filter having a substrate and an optical multi-layer member consisting essentially of metal layers each composed chiefly of nickel (Ni) and dielectric layers each formed of any one of SiO2, Al2O3 | 07/03/2007 |
| 7230768 | Ultra-bright light engine for projection displays A projector incorporating a prism and a plurality of light valves for modulating light that passes though the prism, wherein the color splitting-converging prism includes a dichroic coating having multiple layers of high and low index of refraction and ¼ wavelength... | 06/12/2007 |
| 7215465 | Optical low pass filter An optical device includes first and second laminated films of alternate layers of optical thin films of high refractivity material and low refractivity material, and having an optical film thicknesses of “a” and “b” respectively; wherein b>a, and an optical... | 05/08/2007 |
| 7215466 | Optical filter for screening out infrared and ultraviolet light An optical filter for screening out infrared and ultraviolet light includes a transparent substrate and a film stack formed on the substrate. The film stack includes a number of high refractive index layers and a number of low refractive index layers alternately sta... | 05/08/2007 |
| 7209608 | Wavelength tunable optical filter Provided is a Fabry-Perot type wavelength tunable optical filter, comprising a first mirror; a second mirror located over the first mirror; a driving body located over the first mirror, and having both ends fixed to the first mirror through a spacer; a plurality of ... | 04/24/2007 |
| 7199928 | Optical element, optical drop module, optical add-drop module, and tunable light source An optical element has a structure in that a first mirror stack layer is formed on a substrate. A first transparent conductive film, a conductive buffer layer, a spacer layer having a primary or secondary electrooptic effect, a conductive buffer layer and a second t... | 04/03/2007 |
| 7193781 | Optical substrate and antireflective film An optical substrate includes a transparent substrate; an interference spot-preventing layer composed of at least one sublayer, the interference spot-preventing layer being coated on the transparent substrate; and a hard coat layer disposed on the interference spot-... | 03/20/2007 |
| 7190523 | Wavelength-tunable optical filter A wavelength-tunable optical filter includes a stationary mirror, a movable mirror disposed so as to face the stationary mirror, an actuating plate for actuating the movable mirror, and a peripheral supporting portion holding the actuating plate which are disposed a... | 03/13/2007 |
| 7172286 | Colored contact lens A colored contact lens comprising a generally uncolored pupil region, a generally annular-shaped iris region and a multicolored pattern on the iris region. The multicolored pattern is sufficiently colored to change the apparent color of an iris of a person wearing t... | 02/06/2007 |
| 7170683 | Reflection element of exposure light and production method therefor, mask, exposure system, and production method of semiconductor device A reflector for extreme ultraviolet light, its manufacture method, a phase shift mask, an exposure apparatus and a semiconductor manufacture method, capable of making the wavelength dependency of a reflectance via a plurality of reflection surfaces be coincident wit... | 01/30/2007 |
| 7166797 | Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to incr... | 01/23/2007 |
| 7165846 | Dichroic mirror and projection-type display unit On a transparent substrate (1), a first alternating periodic layer (5) including low-refractive-index layers (2) and high-refractive-index layers (3), a second alternating periodic layer (6) including the low-refractive-index layer... | 01/23/2007 |
| 7167309 | Optical compensation of cover glass-air gap-display stack for high ambient lighting Apparatus and methods relating to display stacks wherein one or more index matching layers are utilized to minimize reflectance at the boundaries of otherwise adjacent layers. More particularly, the present invention is directed to methods and apparatus relating to ... | 01/23/2007 |
| 7153615 | Extreme ultraviolet pellicle using a thin film and supportive mesh An extreme ultraviolet (EUV) pellicle including a thin film or membrane and a supportive wire mesh. The pellicle allows EUV radiation to pass through the pellicle to a reticle but prevents particles from passing through the pellicle. A buffer gas supports the film a... | 12/26/2006 |
| 7142364 | Guided resonance dielectric filter systems We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We fu... | 11/28/2006 |
| 7123416 | Method of making high performance optical edge and notch filters and resulting products High performance optical edge and notch filters and methods of making the same are disclosed. The multi-layer, thin-film optical edge filters have an edge steepness greater than about 0.8% as measured by dividing (a) the edge width from the 50% transmission waveleng... | 10/17/2006 |
| 7119960 | Method of making high performance optical edge and laser-line filters and resulting products High performance optical edge and laser-line filters and methods of making the same are disclosed. The optical edge filters have an edge steepness greater than about 0.8% as measured by dividing (a) the edge width from the 50% transmission wavelength to the optical ... | 10/10/2006 |
| 7116473 | Optical element with antireflection film An antireflection film includes alternately deposited high-refractive-index layers and low-refractive-index layers. The refractive indexes and extinction coefficients of the layers are such that the antireflection film exhibits sufficient antireflection characterist... | 10/03/2006 |
| 7113339 | Interferometric modulator and display unit The interferometric modulator of the invention includes a transparent substrate (refractive index: n0) 12, an optical thin film (complex index of refraction: N1=n1−i·k1) 13 provided on the transparent subs... | 09/26/2006 |
