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7433126 |
Illuminating optical device in image display device and image display device
Speckle noise is reduced to increase image quality in an image display apparatus such as a projection display or the like. An illuminating optical device in an image display apparatus ( 1 )...
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7408713 |
Step-phase interferometric optical interleaver
The cavity in the mirror arm of a conventional interleaver is replaced by a wedge integral with the beamsplitter structure of the interleaver. Thus, the light reflected from the AR-coated surface...
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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 (λ c ) to pass through them, while reflecting the...
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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...
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7317574 |
Long-distance quantum communication
Apparatus and methods for high fidelity quantum communication over long communication channels even in the presence of significant loss in the channels are disclosed. The invention employs laser...
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7315667 |
Propagating light to be sensed
Light to be sensed is spreaded across an entry surface of a transmission structure with a laterally varying energy transmission function. For example, the light could be output from a...
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7306941 |
Biochemical measuring chip and measuring apparatus
A simple and convenient sensor and measuring apparatus utilizing the optical interference effect of an optical thin film capable of measuring the binding between biochemical substances at a high...
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7304799 |
Tunable optical filter with heater on a CTE-matched transparent substrate
An optical device including: a glass substrate; a crystalline silicon layer bonded to the glass substrate; and a thermally tunable thin-film optical filter fabricated on top of the crystalline...
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7304798 |
Spectroscopic apparatus
A spectroscopic apparatus which is compact in size and performs high-precision light-splitting with a large angular dispersion. An optical input-processing section outputs a filtered transmitted...
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7302189 |
Optical component provided with demultiplexing function and wavelength dispersion compensator
It is an object of the present invention to provide an optical component provided with a demultiplexing function capable of reducing an insertion loss and downsizing, and a wavelength dispersion...
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7301704 |
Moveable micro-electromechanical device
A MEMS device is provided. The MEMS device may include a first plate and a second plate defining a cavity with the first plate. The MEMS device may also include a first transducer configured to...
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7297386 |
Antireflection structure
An antireflection structure ( 10 ) comprises a base ( 1 ), and a finely roughened antireflection part ( 2 ) formed in a surface of the base ( 1 ). The finely roughened antireflection part ( 2 )...
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7289264 |
Passive broad long wave and mid-wave infrared optical limiting prism
Method for limiting the amount of radiation impinging on a radiation sensitive detector (RSD) responsive to signals having infrared wavelengths of approximately 3 to 14 microns. Method includes:...
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7286294 |
Beam-shaping element for optical radiation and a method for producing said element
A beam-shaping element comprises a carrier substrate ( 1 ) bearing a thin-layer metallization which is structured for shaping the beam of optical radiation. The thin-layer metallization includes at...
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7242136 |
Front filter, and plasma display apparatus having the same
The present invention relates to a front filter having a touch screen, and a plasma display apparatus having the same. The front filter installed on a front surface of a panel of a plasma display...
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7236296 |
Multilayer infrared reflecting film with high and smooth transmission in visible wavelength region and laminate articles made therefrom
A multilayer film article is disclosed. The film includes an infrared light reflecting multilayer film having alternating layers of a first polymer type and a second polymer type and an infrared...
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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...
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7193778 |
Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
Various configurations of a virtually imaged phased array (VIPA) generator in combination with a mirror to compensate for chromatic dispersion. A VIPA generator produces a light traveling from the...
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7167612 |
Wavelength tunable filter capable of being bidirectionally driven by electromagnetic forces
A wavelength tunable filter capable of being driven such that reflecting mirrors move more distant as well as closer by using the principle that a direction of the electromagnetic forces changes...
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7164514 |
Holographic data storage media with structured surfaces
Holographic media for storing and reading holographic data is provided having one or more external or internal surfaces having structures for at least one of minimizing reflections from...
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7163872 |
Tunable-wavelength optical filter and method of manufacturing the same
An active type tunable wavelength optical filter having a Fabry-Perot structure is disclosed. A tunable wavelength optical filter which comprises a lower mirror in which silicon films and oxide...
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7158304 |
Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
An optical apparatus for producing chromatic dispersion. The apparatus includes a virtually imaged phased array (VIPA) generator, a mirror and a lens. The VIPA generator receives an input light at...
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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...
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7092162 |
Bandwidth enhancement device
An optical cavity is combined with a MUX or a de-MUX device having substantially the same free-spectral range in order to enhance the bandwidth of the device. The optical cavity can be tuned to...
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7085058 |
Security element with flip-flop color change effect and magnetic properties, article compromising such a security element and method for producing said security element and said article
A security element ( 1 ) for application or embedding in objects ( 300 ), in particular for documents of value such as bank notes, credit cards and the like, is structured in a multi-layer fashion...
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7075723 |
Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
An optical apparatus for producing chromatic dispersion. The apparatus includes a virtually imaged phased array (VIPA) generator, a mirror and a lens. The VIPA generator receives an input light at...
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7061946 |
Intra-cavity etalon with asymmetric power transfer function
Apparatus and methods for compensation of asymmetric mode pulling in external cavity lasers and the like. An apparatus includes a wavelength locker or etalon device to provide an asymmetric power...
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7012752 |
Tunable-wavelength optical filter and method of manufacturing the same
An active type tunable wavelength optical filter having a Fabry-Perot structure is disclosed. A tunable wavelength optical filter which comprises a lower mirror in which silicon films and oxide...
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7005186 |
Damage resistant and tolerant optical materials
A new damage resistant and tolerant optical element is disclosed. Prior art solid or liquid host matrices are replaced by a soft crosslinked polymer or similar host material. The viscoelastic...
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6988806 |
Instant-on projector
A projection system is provided with a primary light source and an auxiliary light source to compensate the primary light source for at least white light during an initial period to provide a user...
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6985295 |
Light diffusing film
A light diffusing film which has an excellent luminance characteristic and excellent thermal properties and which exhibits no deterioration in light transmittance. The light diffusing film...
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6982832 |
Optically variable element comprising a sequence of thin-film layers
The invention concerns an optically variable element, in particular an optically variable safeguard element for safeguarding banknotes, credit cards and the like, and a security product and a foil,...
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6980108 |
Optical fiber cable based intrusion detection system
There is provided an electronic security system for a perimeter structure that incorporates a fiber optic cable secured to the perimeter structure. Typically the perimeter structure is a fence. A...
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6956700 |
Wavelength dispersion compensating apparatus
A wavelength dispersion compensating apparatus of the invention comprises: a VIPA plate capable to output incident lights at different angles according to wavelengths; a variable dispersion...
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6947216 |
Optical apparatus which uses a virtually imaged phased array to produce chromatic dispersion
An optical apparatus for producing chromatic dispersion. The apparatus includes a virtually imaged phased array (VIPA) generator, a mirror and a lens. The VIPA generator receives an input light at...
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6946188 |
Modified copolyesters and improved multilayer reflective films
A multilayered polymer film includes a first set of optical layers and a second set of optical layers. The first set of optical layers is made from a polyester which is often birefringent. The...
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6930835 |
Atomic layer controlled optical filter design for next generation dense wavelength division multiplexer
An optical filter using alternating layers of materials with “low” and “high” indices of refraction and deposited with atomic layer control has been developed. The multilayered thin film...
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6927900 |
Multilayer infrared reflecting film with high and smooth transmission in visible wavelength region and laminate articles made therefrom
A film includes a multilayer stack composed of unit cells having alternating optical layers of first and second diverse polymers A,B. The unit cells can consist essentially of two (AB), four...
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6910780 |
Laser and laser signal combiner
An optical communication system for transmitting multiple optical beams, each at a different wavelength is disclosed. The optical communication system includes a laser array having multiple laser...
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6900940 |
Optical apparatus and device
A VIPA plate having a configuration where a translucent reflection film and a total reflection film are respectively arranged on one side and the other side of a transparent parallel plate can be...
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6896949 |
Wafer scale production of optical elements
Improved optical element wafers comprising stacked, optically coupled etalon wafers are disclosed. Each etalon wafer comprises a bulk optic wafer defining the optic cavity between selectively...
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6882477 |
Method and system for interference lithography utilizing phase-locked scanning beams
A method and system of interference lithography (also known as interferometric lithography or holographic lithography) which utilizes phase-locked, scanning beams (so-called scanning beam...
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6881473 |
Light diffusing film and method for preparation thereof
A light diffusing film including a film including crystalline polymer compound C laminated to at least one face of an internal light-diffusing film including an islands-in-a-sea structure including...
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6870679 |
Multi-pass configurations
A method and device is disclosed for relaying a narrow diameter collimated optical beam carrying optical communication signal channels between a multilayer interference filters and another...
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6859323 |
Dichroic neutral density optical filter
An optical thin film stack provides reflection of essentially all light except for a selected amount of transmission over a selected wavelength range. Reflecting, rather than absorbing, unwanted...
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6859321 |
Low voltage tunable photonic crystal with large defects as wavelength routing
A photonic bandgap device includes a first mirror region including alternating layers of different materials. A second mirror region includes alternating layers of different materials. An air gap...
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6859320 |
Dispersion compensation using resonant cavities
Multi-stage, all-pass optical filters used to make low-loss, multi-channel dispersion compensation modules are disclosed. The all-pass optical filters can be ring resonators in waveguides,...
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6850365 |
Optical multilayer structure and its production method, optical switching device, and image display
Provided is an optical multilayer structure having a simpler configuration, flexibility in selection of materials and improved reliability in wiring and capable of high-speed response even in a...
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6844976 |
Heat-absorbing filter and method for making same
The present invention relates to a heat filter and a process for manufacturing this filter. This heat filter may for example be used to filter surgical or examination lighting composed of a light...
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6844975 |
Etalon devices employing multiple materials
The invention provides a substantially athermal etalon. In one embodiment, the multi-cavity etalon includes at least one free-standing multi-layer thin film and is rendered thermally stable through...
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