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7324282 |
Apparatus, system and method for applying optical gradient forces
The present invention relates to a system of applying optical gradient forces to form a plurality of optical traps to manipulate small particles. The system includes a light source for generating a...
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7313763 |
System for operating an astronomical observatory in real time using http
A system for operating an astronomical observatory made up of astronomical hardware, utilizing a web browser operated by a user, and a web server connected to the observatory, wherein both the...
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7307804 |
Thermally stabile GRISMs
Thermally stable GRISMs comprise a substrate and cover plate composed of a first material keeps the spatial frequency of the grating stable with temperature, and a prism composed of a second...
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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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7298540 |
Equalizing optical wavelength routers
A dynamic equalizing optical channel router includes an input port for receiving a wavelength division multiplexed composite optical signal comprising a plurality of channels; at least one output...
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7295357 |
Apparatus for handling minute object
An apparatus for handling a minute object such as a cell by using a holographic optical tweezers that comprises a laser light source 1 , holographic plate 3 having a specified pattern to form a...
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7294293 |
Method for manufacturing diffraction optical element
A method for manufacturing a diffraction optical element, according to the present invention, includes the steps of: supplying a photocurable resin onto a surface of a light-transmitting molding...
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7292393 |
Variable illuminator and speckle buster apparatus
Disclosed is an apparatus for illuminating a sample. In one embodiment, this apparatus includes a laser for outputting an incident laser beam towards a sample and a first diffractive element having...
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7286291 |
Show-through security packaging system for digital media
A system of visual authentication of digital media. A visual means is provided at the point of purchase for a user to verify that the source of software is genuine. An authentication image is...
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7277640 |
Optical add/drop multiplexing systems
The present invention overcomes problems associated with switch isolation, noise and crosstalk suppression, insertion loss, spurious reflections, wavelength tolerance, and compactness that are...
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RE39865 |
Method of fabricating Bragg gratings using a silica glass phase grating mask and mask used by same
An index grating is imprinted in the core of an optical fiber using a specially designed silica glass phase grating mask. The phase mask is held in close proximity to the optical fiber. Laser...
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7271956 |
Diffractive optical element
A diffractive optical element including a stack of first, second and third optical regions or a stack of first, second, third and fourth optical regions, a first relief pattern formed between the...
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7269315 |
Apparatus for writing Bragg gratings and reflection unit used in the apparatus
Provided is an apparatus for writing Bragg gratings and a reflection unit used in the same capable of readily adjusting an incident angle of light radiated from a light source, in order to write...
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7268947 |
Diffractive optical element and optical head using the same
A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light...
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7262914 |
Method and apparatus for generating and detecting duality modulated electromagnetic radiation
A generator of duality modulated radiation, of which the irradiance, the wave intensity, or both, are varied from ordinarily equivalent levels, either for purposes of providing energy depleted or...
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7262913 |
Chromatic dispersion and dispersion slope compensating apparatus
In a chromatic dispersion and dispersion slope compensating apparatus according to the present invention, a WDM light which has been angularly dispersed to a first direction by a VIPA plate, is...
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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...
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7256942 |
Single lens element, light source device and scanning optical device
A single lens element used for converting a divergent pencil of rays, radiated from a light source, into a predetermined convergent state, wherein
the single lens element is made from a...
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7248667 |
Illumination system with a grating element
An illumination system, particularly for wavelengths ≦100 nm, with an object plane and a field plane, comprises a grating element and a physical diaphragm in a diaphragm plane, which is arranged...
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7245432 |
Dual diffraction-grating device
A diffraction grating device ( 100 ) has both reflecting ( 108 ) and transmitting ( 106 ) gratings inter leaved to allow both transmission diffraction patterns and reflection diffraction patterns...
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7237940 |
Light guide plate with subwavelength grating and backlight module using the same
A light guide plate ( 30 ) has a light incident surface ( 305 ) for receiving light, a light emitting surface ( 301 ) for emitting light, a bottom surface ( 303 ) opposite to the light emitting...
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7236302 |
Diffraction optical element
In a diffraction optical element in which a plurality of diffraction gratings are laminated and the maximum difference of length among optical paths of light passing through the plurality of...
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7233423 |
Optical fractionation methods and apparatus
Static arrays of optical traps can be used to sort microscopic objects with exponential sensitivity to size. Such optical fractionation relies on competition between an externally applied force and...
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7233724 |
Long period bragg grating optical signal attenuation
An apparatus in one example comprises one or more light sources, one or more long period Bragg gratings that are optically coupled with the one or more light sources, and one or more amplification...
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7230761 |
High-dispersion grisms
A grism based upon a grating with a given line frequency is configured such that a design wavelength will undergo either a specific total bend angle, a zero-degree total bend without lateral...
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7230762 |
Polarization phase difference plate
The object of the present invention is to provide an excellent-quality polarization phase difference plate that enables, by a simple structure: decrease in light loss and in oscillation of the...
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7226175 |
Image exposure device and laser exposure device applied thereto
When a ratio R between a total angle φ of a widening angle in a median intensity of light of a light source (a GaN based semiconductor laser) and a total angle 2/φ of a widening angle of light...
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7227688 |
Apparatus for applying optical gradient forces
An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of...
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7227689 |
Birefringence optical element and manufacturing method thereof
A mask with an opening pattern is placed on a substrate, and etching is carried out by use of anisotropy etching of crystal. The opening pattern of the mask is composed of broken lines, each of...
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7221512 |
Light control material for displaying color information, and images
A light control material is provided for displaying color images having microstructures either on its surface or within the material which reflect a selected color and bandwidth of light in...
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7215461 |
MEMS devices with increased damping for suspended movable structures
In one embodiment, a light modulator includes a substrate and a number of modulator elements disposed above and spaced apart from the substrate. Each modulator element has an optically active...
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7206107 |
Method and system for beam expansion in a display device
An exit pupil extender wherein the relative amount of different color components in the exit beam is more consistent with that of the input beam. In order to compensate for the uneven amount in the...
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7195387 |
Device and method for emitting light with increased brightness using diffractive grating pattern
A device and method for emitting light with increased brightness utilizes a lamp having a diffractive grating pattern. The diffractive grating pattern diffracts incident light that originates from...
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7192175 |
Backlighting light pipe for illuminating a flat-panel display
A light pipe includes a surface provided with a pattern that has diffractive properties, where the pattern has uniform, mutually different areas on the surface such that some of the areas are...
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7184627 |
Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
An optical wavelength grating coupler incorporating one or more distributed Bragg reflectors (DBR) or other reflective elements to enhance the coupling efficiency thereof. The grating coupler has a...
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7180590 |
Transmission spectrometer with improved spectral and temperature characteristics
Transmission spectrometers require low levels of background light so that the signal to noise ratio is increased, and also require stable performance over wide temperature ranges. Light reflected...
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7181106 |
Optical fiber capped at end with diffractive film, and manufacturing method therefor
Affords efficiently and at low cost optical fibers capped at the end with a working, tiny optically diffractive film. An optical fiber includes a diffractive film formed onto an endface thereof, or...
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7180668 |
Optical pickup device and optical disc device
This invention is an optical pickup device having a composite optical element ( 32 ) which has a first diffraction grating ( 45 ) for splitting a light beam emitted from a light source ( 31 ) into...
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7173764 |
Apparatus comprising a tunable nanomechanical near-field grating and method for controlling far-field emission
A tunable nanomechanical near-field grating is disclosed which is capable of varying the intensity of a diffraction mode of an optical output signal. The tunable nanomechanical near-field grating...
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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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7164532 |
Diffraction grating, light source unit applying the same therein, and optical head device employing the same
A polarization diffraction grating includes two media having different orientation states arranged alternately and cyclically, wherein each boundary between the media forms an oblique rectangular...
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7149016 |
Optical element and scanning optical system having the same and image forming apparatus
An optical element that can reduce Fresnel (surface) reflection on a lens surface to be a cause of flare or ghost, and a scanning optical system having the same are provided. A microstructure...
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7149030 |
Diffractive optical element and also optical arrangement comprising a diffractive optical element
A diffractive optical element has a plurality of diffraction structures for a certain wavelength. These each have a width measured in the plane of the diffractive optical element and a height...
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7142751 |
Methods and systems for chromatic dispersion compensation in switched grating WDM devices
Methods and system for chromatic dispersion compensation in disperser-combiner optical systems. The chromatic dispersion in disperser-combiner optical systems is substantially compensated by, after...
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7136206 |
Method and apparatus for implementing a multi-channel tunable filter
The present invention provides a multi-channel tunable filter and methods for making such a filter. In one embodiment, the filter comprises a bank of gratings imprinted into a filter material, such...
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7133203 |
Apparatus for applying optical gradient forces
A method and apparatus for control of optical trap arrays and formation of particle arrays. The method and apparatus provides a laser and a time variable diffractive optical element to allow...
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7133205 |
Atmospheric stabilizer filter and method
A diffracting optical filter for use with telescopes provides a plurality of cells separated by opaque lines on an translucent substrate, the spacing of the cells proportionally spaced to match the...
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7133204 |
Apparatus and methods for generating multiple exit-pupil images in an expanded exit pupil
A diffraction grating generates even-order, odd-order, and 0 th -order exit-pupil images. The even-order exit-pupil images have brightness levels within a first range and the odd-order exit-pupil...
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7130120 |
Prism, projection and optical component
An apparatus for transmitting or reflecting incident light. The apparatus includes a pair of diffraction grid substrates; a substantially grid-shaped diffraction grid formed of metal, wherein the...
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7129183 |
Method of forming grating microstrutures by anodic oxidation
A method of manufacturing an element having a microstructure of an excellent grating groove pattern or the like is obtained. This method of manufacturing an element having a microstructure...
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