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| Number | Title | Issue Date |
| 8174696 | Device for sorting and concentrating electromagnetic energy and apparatus comprising at least one such device A device for sorting and concentrating electromagnetic energy impinging a surface of the device, the surface including at least one plasmonics-based surface structure or similar structure of periodic or quasi-periodic surface topography. The device is characterized ... | 05/08/2012 |
| 7477382 | Atomic absorption spectrometer An atomic absorption spectrometer is disclosed which includes a monochromater and an optical path defined by a toric mirror, a flat mirror, a flat mirror, a flat mirror, a toric mirror, and a further toric mirror. The toric mirror directs light through entrance slit... | 01/13/2009 |
| 7361908 | Radiation dose estimation for radiochromic films based on measurements at multiple absorption peaks A method of estimating a radiation dose deposited on a radiochromic film based on absorption measurements at least at two wavelengths as well as devices implementing the estimation method. The method includes the following steps: (a) measuring absorption values at a... | 04/22/2008 |
| 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 the sample for absorption or emission measurements to analyse the... | 02/26/2008 |
| 7300168 | System for creating spectral displays A highly adaptable system for creating colorful spectral displays or for achieving a prismatic effect using visible light. The invention includes a fixed-angle or monolithic prismatic element fabricated from plate glass mirror material. A compound version of this mo... | 11/27/2007 |
| 7256880 | Goniophotometer A hemispherical goniophotometer is disclosed, in which two pivoting arms are articulated on a revolving rotating arm and are each fitted with a measurement head. The geometry of the arrangement is chosen such that the measurement heads can move along the envelope su... | 08/14/2007 |
| 7212285 | Optical measurement device An optical measurement device capable of improving optical spectrum measurement accuracy without the need to structurally decrease a slit width. A diffraction grating for dispersing measurement light into respective different wavelengths is rotated in a given direct... | 05/01/2007 |
| 7209286 | Objective with pupil obscuration In accordance with the present invention, a projection exposure apparatus includes an illuminating system to illuminate a drivable micromirror array and an objective which projects the drivable micromirror array onto the photosensitive substrate. The objective inclu... | 04/24/2007 |
| 7133131 | Atomic absorption spectrometer An atomic absorption spectrometer is disclosed which includes a monochromater (30) and an optical path defined by a toric mirror (14), a flat mirror (16), a flat mirror (20), a flat mirror (24), a toric mirror (22) and a fur... | 11/07/2006 |
| 7130045 | Monochromator and method of use A monochromator for isolating or recombining a narrowband optical signal from a broadband signal. A cylinder with a continuous outer wall and two planar end surfaces is composed of a dispersive medium. The cylinder forms a multi-reflective cavity, wherein a broadban... | 10/31/2006 |
| 7116417 | Spectrometer and method for correcting wavelength displacement of spectrometer A spectrometer for correcting a displacement of a dispersed light image having a light source for outputting a monochromatic ray of light, an optical system which images a dispersed light image of the monochromatic ray through an incident slit on an imaging plane, a... | 10/03/2006 |
| 7116418 | Spectral imaging apparatus and methods Spectral imaging apparatus and methods are disclosed. In one embodiment, a spectral imaging apparatus includes a spectral imaging apparatus includes a diffraction grating having one or more entrance apertures formed therein, a collecting reflecting element for refle... | 10/03/2006 |
| 7106440 | Refractive-diffractive spectrometer A diffraction grating and a prism with the appropriate characteristics are employed to provide a combined dispersive characteristic that is substantially linear over the visible spectrum. Radiation from the grating and prism is collimated by a lens towards a detecto... | 09/12/2006 |
| 7072041 | System and method for optical spectrum fast peak reporting A system and method for fast peak finding in an optical spectrum prioritizes the information it first generates and how the information is then forwarded from the system to a host computer, for example. A spectrum detection subsystem generates a spectrum of an optic... | 07/04/2006 |
| 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 the location of a source of electromagnetic radiation in lateral (X),... | 01/03/2006 |
| 6930774 | Method and apparatus for producing unique radiation spectra Apparatus and methods are disclosed for providing a desired spectral intensity profile from a broadband light source. The apparatus comprises separation means for separating light provided by the broadband light source into radiation having a continuum of wavelength... | 08/16/2005 |
| 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 from the concave mirror, first reflection means which reflects first li... | 04/12/2005 |
| 6833917 | Compact birefringent spectrometer with electrically adjustable passband An electrically adjustable spectrometer uses collimated, P-polarized light made incident on a surface of an optically transparent liquid crystal input material. The material transmits the light to a boundary surface between the input material and an output optically... | 12/21/2004 |
| 6750965 | Mirror supporting structure for monochromator There is provided a mirror supporting structure for a monochromator capable of turning the mirrors about axis lines which cross each other, thereby adjusting the attachment angles of the mirrors in two directions. The mirror supporting structure for a monochromator ... | 06/15/2004 |
| 6734962 | Near infrared chemical imaging microscope A chemical imaging system is provided which uses a near infrared radiation microscope. The system includes an illumination source which illuminates an area of a sample using light in the near infrared radiation wavelength and light in the visible wavelength. A multi... | 05/11/2004 |
| 6713770 | High resolution spectral measurement device A high resolution spectral measurement device. A preferred embodiment presents an extremely narrow slit function in the ultraviolet range and is very useful for measuring bandwidth of narrow-band excimer lasers used for integrated circuit lithography. Light from the... | 03/30/2004 |
| 6678044 | Monochromator and optical spectrum analyzer equipped with the same Plane diffraction grating 13 is formed of a material having an appropriate linear expansion coefficient and a variation in the wavelength of the reflected light from concave mirror 14 on account of thermal expansion or shrinkage of members other than plan... | 01/13/2004 |
| 6661513 | Refractive-diffractive spectrometer A diffraction grating and a prism with the appropriate characteristics are employed to provide a combined dispersive characteristic that is substantially linear over the visible spectrum. Radiation from the grating and prism is collimated by a lens toward... | 12/09/2003 |
| 6618142 | Compact birefringent spectrometer A spectrometer uses collimated, P-polarized light made incident on a surface of an optically transparent material at angle θINC. The material transmits the light which reaches a boundary surface between the input material and an output optical... | 09/09/2003 |
| 6603549 | Convolution method for measuring laser bandwidth A simple, reliable, easy to use method for calculating bandwidth data of very narrow band laser beams based on bandwidth data obtained with a spectrometer in circumstances where the laser bandwidths are not large compared to the slit function of the spect... | 08/05/2003 |
| 6587199 | Embedded data acquisition and control system for non-invasive glucose prediction instrument An embedded data acquisition and control system for a precision instruments, such as a non-invasive glucose prediction instrument is disclosed. One feature of the invention provides synchronization of stepper motor position and analog-to-digital converter... | 07/01/2003 |
| 6583873 | Optical devices having a wavelength-tunable dispersion assembly that has a volume dispersive diffraction grating A spectrometer has a source of illumination radiation having a plurality of spectral wavelengths, a bandpass filter, a dispersive beamsplitter disposed in an optical path of said source of illumination radiation, an illumination radiation rejection filter... | 06/24/2003 |
| 6549281 | Monochromator and spectrometric method In the monochromator, when measured beam which is diffracted by a plane diffraction grating is collected by a collimator to be returned, the measured beam is displaced by a displacement member in a direction parallel to rulings of the plane diffraction gr... | 04/15/2003 |
| 6480275 | High resolution etalon-grating monochromator A high resolution etalon-grating monochromator. A preferred embodiment presents an extremely narrow slit function in the ultraviolet range and is very useful for measuring bandwidth of narrow band excimer lasers used for integrated circuit lithography. Li... | 11/12/2002 |
| 6411381 | Method of reducing noise generated by arc lamps in optical systems employing slits A spectroscopy system having enhanced noise reduction that comprises (i) an arc lamp light source of emitted light, which emitted light is projected as an image of the light source; (ii) a slit aperture through which the emitted light is projected; and (i... | 06/25/2002 |
| 6377899 | Method of calibrating spectrophotometer For calibrating a spectrophotometer having a monochromator with a rotary mechanism to rotate a diffraction grating for producing a monochromatic beam of light of a specified target wavelength, transmission errors by the rotary mechanism are preliminarily ... | 04/23/2002 |
| 6188705 | Fiber grating coupled light source capable of tunable, single frequency operation Fiber Bragg grating coupled light sources can achieve tunable single-frequency (single axial and lateral spatial mode) operation by correcting for a quadratic phase variation in the lateral dimension using an aperture stop. The output of a quasi-monochrom... | 02/13/2001 |
| 5661589 | Bilateral slit assembly, and method of use A system for translating applied linear motion into a slit width present between facing edges of two "Knife-blade" elements. In its preferred embodiment, two slide assemblies are firmly affixed to a frame such that loci of motion of slide elements thereof... | 08/26/1997 |
| 5627671 | Spectrometer slit switching mechanism A spectrometer slit switching mechanism includes a slit plate having a plurality of entrance slits and exit slits formed at prescribed positions, parallel support rods for supporting the slit plate so as to be movable along the support rods, a screw porti... | 05/06/1997 |
| 5625270 | Scanning monochromator with directly driven spectral-dispersion element A scanning monochromator system which uses a directly coupled stepper motor to drive a spectral-dispersion element. The spectral-dispersion element is directly coupled to the output shaft of the motor. The movement of the motor is controlled with an elect... | 04/29/1997 |
| 5461477 | Method and apparatus for imaging A spectrometer comprises a tunable interferometer for producing a monochromatic continuous image at an image plane and including two mirrors having substantially parallel surfaces and an adjustable spacing therebetween, a radiation detector located at the... | 10/24/1995 |
| 5451780 | Device for setting slit widths in the beam path of spectrometers A slit is disposed as diaphragm in the beam path of a mass spectrometer. The slit width is to be variable in the simplest possible manner. Manual, electric motor-driven, thermoelectric or piezoelectric adjustment devices are known. According to the invent... | 09/19/1995 |
| 5212536 | Fresnel lens based spectroscopic detector A detector for laser radiation that detects the presence of above-threshold radiation in one of a set of wavelength ranges employs a set of Fresnel lenses designed to focus radiation in a particular band onto a metal-coated film. A series of Fresnel lense... | 05/18/1993 |
| 5206502 | Laser radiation detection system A laser radiation detection system using a spatial/wavelength filter to "ulate" the response of a detector as a function of wavelength, allowing discrimination of laser sources against broad spectral sources, as well as wavelength determination.... | 04/27/1993 |
| 5127728 | Compact prism spectrograph suitable for broadband spectral surveys with array detectors A device for the spectral dispersion of light suitable for use in a spectrographic mode with arrays of solid state photo-detectors. Light from an entrance aperture passes through a dispersing prism with two curved, refracting surfaces both operating near ... | 07/07/1992 |
