Matches 151 - 200 out of 546 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
6522447 Optical limiting device and method of preparation thereof  
Optical limiting device and method of preparation thereof. The optical limiting device includes a transparent substrate and at least one homogeneous layer of an RSA material in polyvinylbutyral...
6515811 Optical filter having two absorption maximums  
An optical filter comprises a transparent support and at least one filter layer. The optical filter has an absorption maximum in the wavelength region of 560 to 620 nm. The optical filter also has...
6511571 Method for fabricating an optical waveguide  
A method in which a separate preformed optical material is suitably sized for easy handling, manipulation, and fabrication into a waveguide having a core (formed from the optical material) having...
6512643 Photoselective absorbing filter and color display equipped with said filter  
A photoselective absorbing filter that avoids a decrease in luminance of picture elements and is capable of absorbing reflected light with high efficiency, and a color display device equipped with...
6504661 Optical device with protected thin optical films  
Optical devices using thin optical films to adapt the characteristics of a light radiation. An optical device includes an optical structure and thin optical films interposed in the path of a light...
6498682 Tunable add/drop filter  
An inexpensive and efficient tunable electromagnetic filter is disclosed, having a wide range of tunable frequencies, comprising a holder with a number of filters mounted on the holder. The...
6490090 Coloring structure for producing color  
A coloring structure includes a surface layer placed on a base with light transparency and containing transparent brilliant members, each brilliant member including an alternate lamination of at...
6476988 Thin film forming method, display, and color filter  
A thin film formation method in accordance with the present invention forms banks ( 110 ) where affinity bank layers and non-affinity bank layers are alternately layered by repeating a step of...
6469847 Temperature compensated optical filter  
An optical filter assembly is provided which includes a first optical filter and a first counteracting ring. The first optical filter is of a filter material that transmits a selected transmission...
6456760 Optical signal processing apparatus and optical signal processing method  
An optical signal processing apparatus includes a first optical waveguide and a first slab waveguide configured to equally distribute an output light of the first optical waveguide. A first arrayed...
6429587 Electromagnetic-wave shielding and light transmitting plate and display device  
An electromagnetic-wave shielding and light transmitting plate includes a transparent base plate ( 2 ), an electromagnetic-wave shielding member such as a conductive mesh ( 3 ), an antireflection...
6414804 Converging optical system for laser beam source  
A beam intensity filter 2 with increasing permeability with increasing distance from the optical axis in the U axis direction is disposed between laser beam source 1 and objective lens 3 such...
6411450 Method of assessing the effectiveness of a laser eye protection device  
A method of assessing the effectiveness of a laser eye protection (LEP) device having an interference filter surface (IFS) includes (A) specifying optical densities at a number of points on the IFS...
6409348 Projector  
In an illumination optical system; a wavelength separating optical system; plural light modulation devices provided respectively so as to modulate the light in the plural wavelength regions...
6369964 Optical filters for reducing eye strain, during surgery  
Viewing apparatus, for medical and surgical practitioners incorporating one or more optical filters, each exhibiting a reverse photopic response, such that green light is at least partially...
6361614 Dark spin rinse/dry  
A method and apparatus for eliminating the exposure of semiconductor wafers to light during rinsing and drying in wafer cleaning machines having windows is used to reduce scrap and improve the...
6337672 Combined display panel  
A second display panel having a lower luminance is combined with a first display panel having a higher luminance, forming a combined display panel. The entire surface of the combined display panel...
6307691 Optical filter and method for linearization of optical power equalizer  
An optical filter for correcting non-linear gains across a wavelength band includes a first layer having a first layer thickness according to the formula: first layer thickness=mλ/(4n first ),...
6292315 Gem identification viewer  
A gem identifying device using filtered transmitted light for use in distinguishing type-I colorless diamonds from type II colorless diamonds, and natural diamonds and gems from synthetic or...
6287636 Coating apparatus and method utilizing a diluent and a method for producing a color filter substrate  
A coating apparatus comprising a plurality of paint supply devices, a mouthpiece for dispensing a paint supplied from the paint supply devices, and a stage for holding a coated object. The...
6278562 Radiation filter used in welding apparatus  
A filter for absorbing electromagnetic radiation which is used in heating a welding zone wherein a first part is joined to a second part. The filter includes a filter housing which contains a...
6262855 Infrared laser beam viewing apparatus  
An apparatus and method for inspecting the quality of a Nd-YAG laser beam after encountering an optic in a laser marking machine is provided. The apparatus includes a bezel that houses a filter...
6259572 Photographic color effects lighting filter system  
A photographic color effects lighting filter system made up of a series of lighting filters which are designed to be placed in front of one or more lighting sources. The lighting color effects...
6243219 Laser light optical limiter  
Inorganic crystals having one or more species of dopant ions which are photo-reactive are used as visible and or infrared light optical limiters to protect against laser radiation exposure while...
6226113 Coherence filters and systems utilizing same  
Optical filters and filter systems operate in accordance with correlation-induced spectral changes and are applied for spectral line resolution in spectrometry, for optical data processing and for...
6217796 Near infrared absorption composition  
The present invention relates to a near infrared absorption composition containing, in a resin, a dithiol-nickel complex represented by the following formula(1): ##STR1## The near infrared...
6218194 Analytical methods and apparatus employing an optical sensor device with refractive index modulation  
A method for monitoring the interaction of molecular species utilizes a sensor device comprising a substrate (1) with a waveguide (2) formed on the surface thereof. A grating (3) is formed in one...
6215592 Fabry-perot optical filter and method of making the same  
An optical filter having broad resonant frequency passbands for filtering an optical input including a plurality of multiplexed optical wavelengths into a first set of transmitted wavelengths and a...
6204941 Optical filtering device  
An optical filtering device incorporates first and second prisms, the latter prism counteracting the angular dispersion of the former prism. A spatial light modulator provides a positionally...
6180224 Method of absorbing rays outside a visible region  
An absorber of rays outside the visible region. The absorber includes a base made of a transparent synthetic resin with electroconductive anhydrous zinc antimonate incorporated therein; or a base...
6172826 Active resonant filter  
A resonant absorption cell filled with a gas, selected in accordance with the wavelength of the laser radiation of interest, such as DF. The gas within the cell is maintained at substantially...
6165389 Thermally switchable optical devices  
Devices that comprise novel, mesoscopically periodic materials that combine crystalline colloidal array (CCA) self-assembly with the temperature induced volume phase transitions of various...
6157504 Optical filter comprising transparent support and filter layer having two absorption maximums  
An optical filter comprises a transparent support and a filter layer. The filter layer has an absorption maximum in the wavelength range of 500 to 550 nm. The filter layer further has another...
6144512 Dynamic filter structures  
An electromagnetic wave interactive structure is provided for forming a transmitted electromagnetic wave response which is a function of the frequency of the incident wave. A phase transition...
6134045 Chitosan optical materials  
Chitosan-based electro-optic elements are disclosed. An optical waveguide is made from films of chitosan-acetic acid, and from films of chitosan-acetic acid doped with various rare-earth metal...
6128123 Wavelength-tunable eye protection  
An eye protection arrangement for protection against multispectral laser threats includes goggles or spectacles with a tunable etalon optical filter. In one embodiment, the optical filter is...
6126869 Solar blind optical filter  
A solar blind optical filter which absorbs solar UV radiation and transmits non-solar UV radiation includes a carrier material and a salt of a dithioic acid of the formula RCS 2 - X + wherein R...
6122404 Visible stokes polarimetric imager  
A visible Stokes polarimetric imager (80) that separately and contemporaneously measures each of the four separate Stokes polarization parameters of a visible light beam reflected from a scene. The...
6118210 Light-emitting display panel  
A light-emitting display panel comprising an opaque background having a front face of dark color fitted with a plurality of light-emitting elements, the front face and the light-emitting elements...
6117370 Near infrared absorption filter  
The present invention provides a near infrared absorption filter which contains, in a resin film produced from either or both a polycarbonate and a polyarylate by solution casting, a dithiol-nickel...
6113813 Photochromic ultraviolet protective shield  
The present invention teaches a method for making a photochromic ultraviolet protective shield. The UV blocking eyewear uses a material which changes color when exposed to UV radiation. The...
6101755 Fishing rig and method  
Brightly colored translucent monofilament fishing leader line that only permits light in the range of around 500 to around 750 nanometers to pass through the line may appear to glow or shine in the...
6097530 Method of using thermally switchable optical devices  
Devices that comprise novel, mesoscopically periodic materials that combine crystalline colloidal array (CCA) self-assembly with the temperature ined volume phase transitions of various materials,...
6085002 Methods to fabricate dense wavelength division multiplexers  
Methods for the fabrication of dense wavelength division multiplexors (DWDM) are disclosed. In one embodiment, an array of micro membranes and an array of cavities for optical fibers are etched in...
6078442 ND filter  
In a concentric ND filter in which multi-layered circular ND filter elements whose diameter is decreased stepwise toward the uppermost layer from the lowermost layer are concentrically provided on...
6075872 Process for illuminating artwork  
A process for illuminating an object with a first spectrally distinct area. In the first step of the process, the spectral reflectivity of a first spectrally distinct area is determined, and that...
6028723 Protecting eyes and instruments from short pulse laser radiation  
A lens system for protecting high gain optical systems (eyes or equipment) from high intensity laser radiation includes a second mirror disposed on an exit lens, a first mirror formed by half...
6018421 Multilayer thin film bandpass filter  
A novel design for producing bandpass filters with essentially square shapes with little or no ripple in the passband zone. Filters are of the all-dielectric type consist of multiple cavities of...
6018427 Free floating filter clamp  
A filter clamp for retaining a filter, comprising a frame having an aperture to accommodate the filter, a clamp member having a clamp opening for alignment with the aperture when the clamp is in a...
6014251 Optical filters based on uniform arrays of metallic waveguides  
A spectral filter is made in the form of a wafer of nanochannel glass having an array of substantially uniform parallel hollow channels of from about 0.1 microns to about 10 microns that are coated...
Matches 151 - 200 out of 546 < 1 2 3 4 5 6 7 8 9 10 11 >