|
Match
|
Document |
Document Title |
|
|
7623235 |
Curved grating spectrometer with very high wavelength resolution
The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength...
|
|
|
7616309 |
Device for the positioning of optical elements with retractable stop
The invention relates to a device for the positioning of optical elements with retractable stop enabling accurate positioning of an optical element selected among a plurality of optical elements,...
|
|
|
7616306 |
Compressive sampling and signal inference
An optical wavemeter includes a slit, a diffraction grating, a mask, a complementary grating, and a detector. A monochromatic source is incident on the slit. The diffraction grating produces an...
|
|
|
7561266 |
Calibrated spectroscopy instrument and method
A calibrated spectroscopy instrument and a method for calibrating a spectroscopy instrument are disclosed. The spectroscopy instrument includes a monochromator having a drive mechanism comprising a...
|
|
|
7483134 |
Scanning monochromator with direct drive grating
A novel scanning monochromator uses a PM stepper-motor to directly drive a diffraction grating. By employing interpolated encoder feedback in combination with the PM stepper-motor feedback, a...
|
|
|
7480048 |
Monochromator employing single grating volume holograms and method of use
The present invention is directed to a monochromator device which uses single grating volume holograms. The holograms collect light of varying wavelengths such as polychromatic light, and separate...
|
|
|
7382498 |
Two-channel imaging spectrometer utilizing shared objective, collimating, and imaging optics
A two-channel spectrometer has a shared objective and a pair of slits at a common image plane. Each of the slits receives a portion of the output beam of the shared objective and is optimized for...
|
|
|
7365842 |
Light scanning type confocal microscope
A light scanning type confocal microscope includes a light source unit that projects an excitation light beam, a scanning optical system that scans the excitation light beam, an objective lens that...
|
|
|
7345760 |
Grating monochromator/spectrograph
A monochromator for use in a spectrograph admits light from an aperture to a primary reflector (preferably an off-axis parabolic mirror) which collimates the input light with low aberration and...
|
|
|
7336354 |
Spectrophotometer
A spectrophotometer having an optical system for directing a beam of substantially monochromatic excitation light to a liquid sample contained in a well ( 3 ) of a well plate for interaction with...
|
|
|
7289208 |
Low profile spectrometer and Raman analyzer utilizing the same
A spectrometer comprising a collimating element for receiving input light and collimating the same, a dispersive optical element for receiving light from the collimating element and dispersing the...
|
|
|
7283233 |
Curved grating spectrometer with very high wavelength resolution
The present invention discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) module and a method for making the same. The system...
|
|
|
7280206 |
Method and apparatus to improve the dynamic range of optical devices using spatial apodization
Devices and methods for processing multi-wavelength light beams and the single-wavelength components of such light beams are disclosed. In accordance with some embodiments, a spectral filter...
|
|
|
7265827 |
Double grating three dimensional spectrograph with multi-directional diffraction
A spectrograph with a first concave spectrographic diffraction grating is positioned to receive light from an input light source. The first concave spectrographic diffraction grating is configured...
|
|
|
7253897 |
Optical spectrum analyzer
An optical spectrum analyzer (OSA) 10 sequentially or selectively samples (or filters) a spectral band(s) 11 of light from a broadband optical input signal 12 and measures predetermined...
|
|
|
7251028 |
Scanning spectrum analyzer
A system for spectral analysis of a multi-wavelength signal is disclosed. The illustrative embodiment of the present invention, like the prior art, uses a grating or prism to disperse the spectral...
|
|
|
7221452 |
Tunable optical filter, optical apparatus for use therewith and method utilizing same
An apparatus for filtering an input beam of light to produce an output beam of light is provided. The apparatus facilitates tuning an input beam of light to a desired wavelength by directing the...
|
|
|
7215422 |
Assembly and method for wavelength calibration in an echelle spectrometer
A spectrometer assembly ( 10 ) is disclosed. The assembly includes a light source ( 11 ) with a continuous spectrum. A pre-monochromator ( 2 ) generates a spectrum with a relatively small linear...
|
|
|
7209230 |
Hand-held spectra-reflectometer
The present invention is directed to apparatus and method for measuring the spectral characteristics of an object surface. The apparatus comprises a light source for generating an input signal...
|
|
|
7196791 |
Optical detection device
A diffractive optical element device for use in spectroscopy, where broadband light is emitted from a light source ( 31 ) towards the optical element ( 24 ) and from there is transmitted to at...
|
|
|
7092088 |
Field multiplexed dispersive imaging spectrometer
A field multiplexed dispersive imaging spectrometer ( 20 ). The novel system includes foreoptics ( 22 ) for receiving incoming electromagnetic energy, a disperser ( 24 ) disposed to receive energy...
|
|
|
7027151 |
Spectrophotometer
In a spectrophotometer, the following formula is stored in advance as a correction formula of a rotation angle in a correction formula storing portion; θ′=θ+A•sin (C 1 •θ+θa)+B•sin (C 2...
|
|
|
7019832 |
Optical spectrometer with several spectral bandwidths
An optical spectrometer comprises at least two coupling apertures with different mode field diameters, a means for dispersing the light beams exiting each of the coupling apertures along a...
|
|
|
7002680 |
Method and apparatus for measuring waveforms and wavelengths of optical signals
A method and apparatus for measuring characteristics of a single-wavelength optical signal constituting part of a wavelength division multiplexed (WDM) optical signal is provided. The WDM optical...
|
|
|
6992293 |
Real-time infrared chemical imaging spectroscopic apparatus
This invention relates to a real-time infrared chemical imaging spectroscopic apparatus, including a light source for generating infrared radiation. A test sample absorbs a narrow-bandwidth...
|
|
|
6983090 |
High resolution tunable optical filter
A high-resolution tunable optical filter uses a dispersive element in a double pass configuration. The double pass configuration is provided by a reflective quarter-wave plate that conveniently...
|
|
|
6973233 |
Variable-wavelength optical output device
In a wavelength-variable light outputting apparatus, a diffraction grating 8 and a shielding member 11 which make wavelength and light quantity variable are attached to galvanometric scanners ...
|
|
|
6972839 |
Optical spectrum analyzer and optical spectrum detecting method
In an optical spectrum analyzer comprising a spectrograph and a photodevice array, and an optical spectrum detecting method, a wavelength deviation, from an assigned wavelength, of a light detected...
|
|
|
6954271 |
System and method for multiplexing inputs into a single spectrometer
A spectrometer for measuring the intensity of light, comprises a grating having a major axis, a first entrance aperture aligned with the grating major axis and configured to direct light energy...
|
|
|
6952260 |
Double grating three dimensional spectrograph
A spectrograph with a first concave spectrographic diffraction grating is positioned to receive light from the input light source is configured to provide a diffracted light output dispersing the...
|
|
|
6930776 |
High optical rejection optical spectrum analyzer/monochromator
A dual-channel, double-filtering, multi-pass OSA having a narrow spectral linewidth response and high ORR comprises a diffraction grating (DG), two input ports (P 1′ , P 1 ″) for directing...
|
|
|
6906798 |
Multi-path monochromator
In order to provide a multi-path monochromator capable of reducing the size of optical parts with a high resolution and a wide dynamic range, the multi-path monochromator has a lens 2 used as a...
|
|
|
6891615 |
Conical diffraction grazing incidence spectrometer and diffraction grating for use in the spectrometer
A conical diffraction grazing incidence spectroscope for performing wavelength scanning by rotating a diffraction grating about an axis set parallel to groves in a grazing surface of the grating.
|
|
|
6885447 |
Spectrometer and optical spectrum analyzer
The present invention relates to a spectrometer whereby the accuracy of wavelength measurement can be improved without being affected by the environment of use. The present invention is...
|
|
|
6879396 |
Monochromator and optical spectrum analyzer using the same
A monochromator including: a concave mirror which converts incident light into parallel light and emits the parallel light, a plane diffraction grating for diffracting the parallel light emitted...
|
|
|
6876449 |
Adjustable mirror assembly for polarization dependent loss compensation
An optical beam having a randomly and unpredictably variable input polarization state propagates through an optical system containing a first optical surface, for example a diffraction grating, a...
|
|
|
6870618 |
Wavelength characteristic measuring device and method using light having wavelength thereof continuously changed
A wavelength variable light source emits a light whose wavelengths continuously change from a preset start wavelength up to a stop wavelength to a measuring object. A timing information output...
|
|
|
6853450 |
Monochromator and optical spectrum analyzer
A monochromator comprises an optical ray input section which limits the width of optical rays input from a light source, a first concave mirror for converting the optical rays passing through the...
|
|
|
6842286 |
Optical system and methods that compensate for changes in atmospheric conditions
Optical systems are provided. One such optical system includes an optical source that propagates a source beam of light. A diffracting component is optically coupled to the optical source and is...
|
|
|
6839136 |
Holographic grating spectrum analyzer
A spectrum analyzer providing an integrated calibration function and for providing that calibration function automatically. The injection of light to be analyzed through a central aperture of a...
|
|
|
6791685 |
Optical signal performance monitoring apparatus and method in multi-channel optical transmission system
An optical signal performance monitoring apparatus in a multi-channel optical transmission system and a method for monitoring the optical signal performance. The optical signal performance...
|
|
|
6755074 |
Liquid chromatographic method and system
To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by...
|
|
|
6744506 |
Depolarizing plate and an optical apparatus using the same
A depolarizing plate comprising a first rectangular wedge plate that has a first crystallographic optical axis in a diagonal direction of the rectangle and which has a thickness thereof in a...
|
|
|
6742168 |
Method and structure for calibrating scatterometry-based metrology tool used to measure dimensions of features on a semiconductor device
The present invention is generally directed to a method and a structure for calibrating a scatterometry-based metrology tool used to measure dimensions of features on a semiconductor device. In one...
|
|
|
6717670 |
High-resolution littrow spectrometer and method for the quasi-simultaneous determination of a wavelength and a line profile
The invention relates to a spectrometer ( 10 ) with a dispersive element ( 16 ) that can be displaced between at least two positions. In the first position, the simply dispersed radiation ( 44 ) of...
|
|
|
6714298 |
Spectral instrument using multiple non-interfering optical beam paths and elements for use therewith
A spectrometer, or a spectral instrument using multiple non-interfering optical beam paths and special optical elements. The special optical elements for use with the instrument are used for...
|
|
|
6712473 |
Mirror array device and projection type display apparatus using the same
In order to provide a noise-free reliable projection type display apparatus which has no movable portion and can display a high quality full-color image, the following arrangement is proposed. In a...
|
|
|
6710332 |
System for detecting rotation angles of an diffracting portion using a absorption cell sealed with a plurality of kinds of gases and linear interpolation
A diffracting portion is composed of optical elements including an optical element, and diffracts light. A drive unit rotates the optical element. An angle detector detects a rotation angle of the...
|
|
|
6690468 |
Arrangement for simultaneous analysis of several optical lines
An optical spectrum analyzer of novel design, in which several different spectra can be measured and analyzed simultaneously. A measuring signal is used as a reference signal for calibrating the...
|
|
|
6683686 |
Temporally resolved wavelength measurement method and apparatus
The invention provides a method and apparatus for determining the wavelength of a sample source of light, the apparatus having a reference light source of known wavelength, a collimator for...
|