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6985226 |
Compact imaging spectrometer utilizing an immersed grating and anamorphic mirror
A compact imaging spectrometer comprising an entrance slit, an anamorphic mirror, a grating, and a detector array. The entrance slit directs light to the anamorphic mirror. The anamorphic mirror...
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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...
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6982789 |
Monochromator system and applications thereof
A monochromator system applicable in spectrophotometer, polarimeter and ellipsometer systems which operate over a large range of wavelengths, including a stage which enables position adjustment of...
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6977726 |
Systems, methods and devices for holographic demultiplexing of optical signals
Systems, methods and devices for holographic demultiplexing of optical signals that include constituent light signals of different wavelengths. A holographic demultiplexor includes a volume...
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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...
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6970242 |
Optical spectrometer
Incoming light is spectrally analyzed by diffracting the incoming light with a grating. At least a part of the incoming light is split off so that this part contains mainly one polarization...
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6967718 |
Method and apparatus for monitoring WDM channels and for analyzing dispersed spectrum of light
An apparatus for measuring wavelength composition and power of a dispersed spectrum of light comprises a diffractive light modulator and a detector. The diffractive light modulator comprises an...
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6963399 |
Method and apparatus for quantifying an “integrated index” of a material medium
An apparatus for and method of calculating an integrated index of a transparent, translucent or opaque material for a desired wavelength range, the method comprising measuring a filtered value of...
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6956649 |
Spectroscopic system and method using a ceramic optical reference
A ceramic reference in conjunction with a spectrometer, a metallized ceramic material, and a method of utilizing a ceramic material as a reference in the ultraviolet, visible, near-infrared, or...
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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...
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6952271 |
Caching of intra-layer calculations for rapid rigorous coupled-wave analyses
A library of simulated-diffraction signals for an integrated circuit periodic grating is generated by generating sets of intermediate layer data. Each set of intermediate layer data corresponding...
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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...
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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...
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6930775 |
Diffraction-based optical correlator
Method and system for wavelength-based processing of a light beam. A light beam, produced at a chemical or physical reaction site and having at least first and second wavelengths, λ1 and λ2, is...
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6922239 |
Multi-wavelength cross-connect optical switch
A cross-connect switch for fiber-optic communication networks employing a wavelength dispersive element, such as a grating, and a stack of regular (non-wavelength selective) cross bar switches...
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6922240 |
Compact refractive imaging spectrometer utilizing immersed gratings
A compact imaging spectrometer comprising an entrance slit for directing light, a first means for receiving the light and focusing the light, an immersed diffraction grating that receives the light...
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6919959 |
Digital spectral identifier-controller and related methods
A high speed, low cost, wide spectrum light scanning and sensor unit ( 10 ) for receiving reflected light from an object and diffracting the light into segments of wavelengths and a linear sensor...
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6909504 |
Apparatus, method, and system for analyzing samples using triboluminescent technology
An apparatus, method, and system are disclosed to analyze samples materials using triboluminescent technology. A mechanical activation knot is provided that comprises an optical window, a membrane,...
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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...
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6904205 |
Resolution enhanced optical spectrometer having a fixed number of photodetector elements
A waveguide optical monitor is disclosed. The device has an optical input port coupled through a switch to a plurality of input waveguides. A dispersive element disperses light within the input...
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6900939 |
Polarization insensitive beam splitting grating and apparatus using it
A beam splitting element having a diffraction grating is designed by careful selection of device parameters such as grating period, duty cycle, depth and refractive index. In particular, the...
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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.
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6891676 |
Tunable spectral filter
An optical spectral filtering device and associated method for selectively directing a portion of a wavelength multiplexed input signal, entering through an optical fiber, into one or more output...
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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...
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6879395 |
Spectrum measuring instrument
In a spectrum measuring instrument of the present invention, a detecting surface of a detector is a two-dimensional detecting surface and spectrum light coming out from a dispersing element and is...
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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...
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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...
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6870619 |
Spectrometer and method for measuring optical spectrum
An entrance slit of the spectrometer is illuminated with optical radiation. An optical component images the entrance slit to an optical modulator by the optical radiation and disperses the optical...
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6862092 |
Spectrometer
A method and apparatus for measuring spectral information of light from at least one object includes at least one light detector and at least one transparent body. The transparent body has a front...
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6862091 |
Illumination device and method for spectroscopic analysis
An illumination subsystem for use in optical analysis which provides spatially and angularly homogenized radiation to the sample being analyzed. The system eliminates the illumination system as an...
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6862090 |
Coaxial illumination system
A method and apparatus for combining the spectral outputs of multiple light sources to provide a high-efficiency broad-band illuminator for optical metrology is disclosed. The illuminator combines...
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6859272 |
Spectrometer sample generating and injecting system using a microliter nebulizer
A system atomizes liquids into a gaseous medium for formation and injection of a sample into an analytical apparatus, such as a plasma spectrometer. The system employs a high efficiency nebulizer...
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6859275 |
System and method for encoded spatio-spectral information processing
Encoded spatio-spectral information processing is performed using a system having a radiation source, wavelength dispersion device and two-dimensional switching array, such as digital micro-mirror...
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6853449 |
Programmable diffraction grating sensor
A programmable substance detector includes a light source, a sample cell, a programmable diffraction grating positioned to receive light from the light source and to direct diffracted light to the...
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6850858 |
Method and apparatus for calibrating a metrology tool
A method and apparatus for calibrating a metrology tool are disclosed. The method includes measuring a parameter of a contrast enhanced feature on an artifact using a metrology tool, where the...
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6844931 |
Spectrophotometer and its use
A spectrophotometer including an optical measurement head, a spectrometer and a control electronic. The measurement head is equipped with a multi-channel illumination arrangement having exclusively...
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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...
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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...
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6839135 |
Optical device
An optical device includes an imaging device for imaging an incident beam onto a focal surface, and a support element which includes at least one side having a shape corresponding to the focal...
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6836325 |
Optical probes and methods for spectral analysis
The present invention relates to spectral analysis systems and methods for determining physical and chemical properties of a sample by measuring the optical characteristics of light emitted from...
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6836530 |
Illumination system with a plurality of individual gratings
There is provided an illumination system for wavelengths of ≦100 nm, having an object plane and a field plane. The illumination system includes a grating element having a plurality of gratings,...
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6825920 |
Method and system of determining chamber seasoning condition by optical emission
A plasma processing system that comprises a process chamber, a plasma source, a light detection device and a controller. The controller is useful for determining a seasoning state of the plasma...
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6825930 |
Multispectral imaging system
The invention features a multi-spectral microscopy system for illuminating a sample with light of a selectable spectral content and generating an image of the sample in response to the...
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6816258 |
Dispersive spectrometer
A dispersive spectrometer comprising a primary lens that images a scene onto a slit through which light from a thin portion of the scene passes to a collimating lens. A grism is optically coupled...
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6813018 |
Hyperspectral imager
The hyperspectral imager includes a diffraction grating, a collecting reflecting element and a reimaging system. The diffraction grating has an entrance slit formed at an entrance slit location...
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6809815 |
Optical arrangement for selection and detection of the spectral region of a light beam and confocal scanning microscope
The present invention concerns an optical arrangement for selection and detection of the spectral region of a light beam ( 1 ) in a confocal scanning microscope, having a means ( 2 ) for spectral...
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6804001 |
Device for measuring spatial distribution of the spectral emission of an object
A device for measuring the space distribution of the spectral emission of an object. The device includes a first lens forming in its Fourier plane an image constituting the optical Fourier...
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6801309 |
Detector array with scattered light correction
The subject invention relates to a method of mitigating the effects of spurious background signals in spectroscopic measurement systems. The design of a broadband imagining spectrometer is...
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6801310 |
Liquid crystal modulator and polarization diversity optics for optical communications
For systems which disperse individual wavelength components of a DWDM beam into an array of converging beams, the individual wavelength signals are modified for blocking, equalization or other...
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6795181 |
Spectrometer attachments and phosphorescence decay measurement
A spectrometry instrument with exchangeable accessories ( 34, 48, 50, 52 ) providing, for example, different sample presentation facilities. The accessories include a manually operable cam-lock...
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