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Class 359/588 - Filter having four or more layers


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter including light interference filter with
No. of patents: 332
Last issue date: 05/29/2012


1                  
NumberTitleIssue Date
8189261Optical component and method for manufacturing the same
An optical component includes an antireflection film that is a multilayer film having alternately-laminated six or more layers including high refractive index layers and low refractive index layers; wherein a first layer of the antireflection film deposited closest ...
05/29/2012
8125714Anti-reflection coating, optical member, exchange lens unit and imaging device
An anti-reflection coating comprising first to seventh layers formed on a substrate in this order, the first layer being an alumina-based layer, the seventh layer being a porous, silica-based layer, and each of the first to seventh layers having predetermined refrac...
02/28/2012
8018652Optical filter
The present invention provides an optical filter including a substrate having a plurality of layers of materials stacked upon it each of which layers is formed from one or both of: a first material having a first index of refraction; and, a second material having a ...
09/13/2011
7903339Narrow band omnidirectional reflectors and their use as structural colors
Disclosed is a multilayer structure wherein a first layer of a first material having an outer surface and a refracted index between 2 and 4 extends across an outer surface of a second layer having a refractive index between 1 and 3. The multilayer stack has a reflec...
03/08/2011
7903338Method and system for managing light at an optical 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...
03/08/2011
7859754Wideband dichroic-filter design for LED-phosphor beam-combining
A general method is disclosed of designing two-component dichroic short-pass filters operable for incidence angle distributions over the 0-30° range, and specific preferred embodiments are listed. The method is based on computer optimization algorithms for an N-lay...
12/28/2010
7791803Antireflection film, optical element and optical system
An antireflection film includes a multilayer film having six layers, in total, provided between an optical substrate and an adhesion layer. The respective layers of first to sixth layers are laminated in order from one side of the adhesion layer. A refractive index ...
09/07/2010
7773300Multiphoton fluorescence filters
An optical filter is provided which includes a plurality of hard coating layers of alternating high and low refractive index provided on a substrate and has an associated first transmission band. The filter also includes at least one additional plurality of hard coa...
08/10/2010
7773301Antireflection film
An antireflection film is disposed on a surface of an optical substrate, and consists of first to tenth layers to stacked sequentially from the opposite side to the optical substrate. The first layer, the fourth layer and the ninth layer are low-refractive index lay...
08/10/2010
7583443Reflective optical element for ultraviolet radiation, projection optical system and projection exposure system therewith, and method for forming the same
A reflective optical element (1) for radiation with a wavelength λ in the ultraviolet wavelength range comprises a reflective surface (6), and a dielectric multilayer system (4) formed on the reflective surface (6) which comprises at lea...
09/01/2009
7573639Terahertz-band optical filter, designing method thereof, and manufacturing method thereof
A terahertz band optical filter having a dielectric multilayer periodic structure in which a plurality of dielectric materials are periodically layered. Multi-cavity layers each having an optical path length of n times λ/2 (n is an integer greater than or equal to ...
08/11/2009
7535642Light control sheet and surface light source using the same
A light control sheet comprises at least a light diffusing film and a prism sheet, wherein the light diffusing film has a light diffusing surface on one side and a rough surface on the other side, the prism sheet has a prism surface on one side and a smooth surface ...
05/19/2009
7535643Folding mirror
A folding mirror includes a substrate and a dielectric multilayered film formed on a surface of the substrate. The dielectric multilayered film includes a first period layer with a structure represented by a formula (0.58H1.16L0.58H)N1, a second period la...
05/19/2009
7450306Optical filter for blocking UV light and IR light
An exemplary optical filter includes a substrate, a plurality of contiguous identical lower filter cavities formed on the substrate, and a plurality of contiguous upper filter cavities formed on the lower filter cavities. Each of the lower filter cavities includes t...
11/11/2008
7443584Polarizer and equipment for manufacturing the same
A polarizer (2) for a liquid crystal display device includes a polarizer base (21), a first protective layer (20) and a second protective layer (22) on two sides of the polarizer base for protecting the polarizer base, and an anti-reflect...
10/28/2008
7436596Optical 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
7394543Spectral selection and image conveyance using micro filters and optical fibers
The present invention features a fiber optic imaging system for generating a customized spectral response comprising (a) an optional optical source for generating optical energy, (b) an optical system for focusing multi spectral optical energy to form a focal surfac...
07/01/2008
7388723ND filter and light quantity diaphragming device including the same
A thin film type ND filter being inexpensive and excelling in durability. There is provided ND filter (0) comprising transparent substrate (1) and, superimposed thereon, light absorption films (3,5) and dielectric films (2,4,6), wherein t...
06/17/2008
7369314Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
05/06/2008
7362506Ultra-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...
04/22/2008
7351447Method of producing anti-reflection film
A method of producing an anti-reflection film includes forming a first layer on a transparent substrate, forming a second layer on the first layer, and forming the third layer on the second layer. When an optical admittance Y at a surface of the second layer is repr...
04/01/2008
7349151IR absorbing reflector
An infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting m...
03/25/2008
7336421Optical 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
7333266CWDM filter
A CWDM filter of the present invention comprises a first portion and a second portion. The first portion includes at least two Fabry-Perot cavity structures, and the second portion comprises a non λ/4 multi-layer structure which has a plurality of alternately super...
02/19/2008
7323759Photosensor for a transmitted light method used for detecting the direction of movement of intensity maxima and intensity minima of an optical standing wave
A photosensor for a transmitted-light method for detecting the intensity profile of an optical standing wave, with a transparent substrate, with a semiconductor component, and with at least three contacts, is characterized by the fact that two semiconductor componen...
01/29/2008
7324283Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
01/29/2008
7317576Dichroic 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
7315420CWDM filter with four channels
A CWDM filter having four channels of the present invention comprises a substrate and odd number of stack structures. Each stack structure includes a first multi-layer stack, a spacer layer, a second multi-layer stack and a coupling layer arranged in turn from the s...
01/01/2008
7312925Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
12/25/2007
7312906Switchable polymer-dispersed liquid crystal optical elements
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches...
12/25/2007
7310059Transparent pane with radar-reflecting properties
The panes (1) of a naval vessel or military vehicle are often coated with a radar-reflecting layer (20) for reduction of the radar signature of the vessel/vehicle. At the same time this layer increases an enemy's possibility of recognizing the vessel i...
12/18/2007
7301695Anti-reflective film and optical element having anti-reflective film
In an anti-reflective film including alternating layers of high refractive-index layers and low refractive-index layers, by designing such that a designed central wavelength λ0 is within a wavelength range of 141 nm to 189 nm, and that when the first to ...
11/27/2007
7298550Dichroic 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
7294360Conformal coatings for micro-optical elements, and method for making the same
A micro-optical element is produced through vapor deposition techniques, such as atomic layer deposition. An optical structure having a surface with uneven structures is exposed to one or more precursor vapors to create a self-limiting film growth on the surface of ...
11/13/2007
7289268Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
10/30/2007
7285787Epi-illumination microscope and fluorescence filter set
A microscope has a light source that emits light to illuminate a sample, a first wavelength selection member that selectively transmits the light from the light source, a light splitter that reflects the light from the first wavelength selection member to epi-illumi...
10/23/2007
7286244Analyzer
An analyzer includes an optical tunable filter 1 for selectively outputting light having a predetermined wavelength, and a PD 421 for receiving light outputted from the optical tunable filter 1 and then passed through or reflected by an object t...
10/23/2007
7277228Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
10/02/2007
7274512Optical filter and optical instrument
In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t...
09/25/2007
7274505Inspection microscope for several wavelength ranges and reflection reducing layer for an inspection microscope for several wavelength ranges
An inspection microscope for several wavelength ranges with at least one illuminating beam path and at least one imaging beam path. Those optical elements in the illuminating beam path and in the imaging beam path, through which beams of all wavelengths pass, are pr...
09/25/2007
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