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| Number | Title | Issue Date |
| 8081311 | System for multispectral imaging A system (10) for multispectral imaging includes a first optical filter (24) having at least two passbands disposed in different spatial positions on the first optical filter, a second optical filter (20) having another at least two passbands, a... | 12/20/2011 |
| 7940394 | Color distribution measuring optical system, color distribution measuring apparatus, and color distribution measuring method A color distribution measuring optical system generates an image of an object to be measured via an imaging optical system and a color matching function filter. The color matching function filter is an optical multilayer film filter, and the angle of arrangement of ... | 05/10/2011 |
| 7907282 | Integrated sensing module for handheld spectral measurements An integrated spectral sensing engine featuring energy sources and detectors within a single package includes sample interfacing optics and acquisition and processing electronics. The miniaturized sensor is optimized for specific laboratory and field-based measureme... | 03/15/2011 |
| 7894068 | Producing filters with combined transmission and/or reflection functions A transmissive and/or reflective optical filter can receive input light, which can emanate from objects traveling along paths past the filter, e.g. from biological cells, viruses, colored spots or other markings on documents, and so forth. In response, the filter ca... | 02/22/2011 |
| 7869043 | Automated passive skin detection system through spectral measurement A passive skin detection system includes a main body which houses a collection optics system having an image splitting device, a visible light filter mechanism having a plurality of narrow band filters and an image capture system. The image capture system stores vis... | 01/11/2011 |
| 7855786 | Single camera multi-spectral imager An imaging system has a single focal plane array that does not require the precise alignment of multiple cameras relative to one another. It incorporates a multi-band, band pass filter that includes filter elements corresponding to pixel regions of a detector within... | 12/21/2010 |
| 7835002 | System for multi- and hyperspectral imaging Arrangement for the production of instantaneous or non-instantaneous multi-band images, to be transformed into multi- or hyperspectral images, comprising light collecting means, an image sensor array, and an instantaneous colour separating means, positioned before t... | 11/16/2010 |
| 7812953 | Mixture identification system A mixture identification system for detecting foreign matter admixed in a tobacco material includes a conveyor for conveying the material, an irradiation device for irradiating infrared light toward an inspection line extending across the conveyor, an infrared camer... | 10/12/2010 |
| 7701580 | Transmitting/reflecting emanating light with time variation A filter arrangement can transmit and/or reflect light emanating from a moving object so that the emanating light has time variation, and the time variation can include information about the object, such as its type. For example, emanating light from segments of a p... | 04/20/2010 |
| 7671993 | Methods and apparatus for estimating the intensity of one spectrum of light in a mixed light, in response to the sensed intensities of one or more other spectrums of light in the mixed light In one embodiment, light having a first spectrum is filtered from a mixed light. Light having a second spectrum, different from the first spectrum, is also filtered from the mixed light. An intensity of the light having the first spectrum, and an intensity of the li... | 03/02/2010 |
| 7623243 | Spectroscopic device A spectroscopic device that can suppress the occurrence of cross-talk when light beams of different wavelength ranges are optically received is provided. Detected light is made incident to a dichroic minor (hereinafter referred to as “mirror”) DM1 alo... | 11/24/2009 |
| 7593105 | Tristimulus colorimeter having integral dye filters A tristimulus colorimeter on a single semiconductor chip having at least three detectors, each detector being coated by colorant filters, each filter having at least one layer and at least one filter having a double layer is provided. The colorimeter determines CIE ... | 09/22/2009 |
| 7580130 | Method for designing a colorimeter having integral illuminant-weighted CIE color-matching filters A method for determining the optimal colorant thicknesses and linear combinations for integral illuminant-weighted CIE color-matching filters is provided. A reflectance colorimeter for configuring printers may be designed using this method. ... | 08/25/2009 |
| 7576860 | Light filter having a wedge-shaped profile A light filter includes exactly one partially reflective layer having a top and a bottom and a wedge-shaped profile defining a wedge direction. First and second transparent layers are disposed on the top and bottom, respectively, of the partially reflective layer, e... | 08/18/2009 |
| 7557924 | Apparatus and methods for facilitating calibration of an optical instrument An optical system comprising an optical instrument and a processing unit. The optical instrument may comprise an illumination source and a sensor. The processing unit may comprise a data storage having stored thereon a characterization of the illumination source and... | 07/07/2009 |
| 7557925 | Optical instrument and parts thereof for optimally defining light pathways An optical assembly is disclosed that includes an illumination source, a detection sensor, a monitor sensor, and an optical piece having a first side adapted to face a sample. The optical piece defines an illumination channel extending from the illumination source t... | 07/07/2009 |
| 7538878 | Apparatus and method for measuring optical characteristics of an object A system for applying pigment to a substrate includes a spectrophotometer integral to the system. Light received from the substrate is spectrally analyzed by a spectrometer. One or more pigment discharges apply one or more pigments to the substrate. The spectrometer... | 05/26/2009 |
| 7528957 | Spectrometric process monitoring Spectrometric apparatus that include an array of detector elements and exhibits a number of capabilities is disclosed. The elements can be responsive to incident radiation to produce an output signal that includes information from the incident radiation. A spectrall... | 05/05/2009 |
| 7477392 | Electromagnetic energy measurement apparatus and method An electromagnetic energy measurement apparatus and method for measuring first, second, and third wavelength components includes first and second coated optical elements having non-parallel surfaces. Proper selection of the parameters of the optical elements reduces... | 01/13/2009 |
| 7466419 | Spectral instrument In this spectral instrument, a plurality of interference filters 31, 32 . . . with transmitting wavebands different from each other are arranged in order so that light reflected by a specific interference filter 31 is made incident on the interference ... | 12/16/2008 |
| 7433042 | Spatially corrected full-cubed hyperspectral imager A hyperspectral imager that achieves accurate spectral and spatial resolution by using a micro-lens array as a series of field lenses, with each lens distributing a point in the image scene received through an objective lens across an area of a detector array formin... | 10/07/2008 |
| 7423677 | Color filter method and apparatus Method and apparatus for generating an output signal that represents light with a desired color profile. A first sensor is provided to receive light and based thereon to generate a first signal with a first color profile. A color sensor is also provided that receive... | 09/09/2008 |
| 7420679 | Method and apparatus for extended hyperspectral imaging The disclosure relates to method and apparatus for obtaining a multimodal hyperspectral image of a sample for widefield spectral analysis. An apparatus according to one embodiment may include a plurality of optical lenses configured to interchangeably receive photon... | 09/02/2008 |
| 7420678 | Multi-spectral imaging Systems and techniques for multi-spectral imaging. Light may be received at a multi-spectral optical module, which transmits a plurality of wavelength band portions of the received light, each having a pre-selected bandwidth between about two nanometers and about fo... | 09/02/2008 |
| 7420680 | Method for designing a colorimeter having integral CIE color-matching filters A method for determining the optimal colorant thicknesses for integral CIE color-matching filters is provided. According to a computational study, a four band filter of the present invention provides a best approximation to the CIE XYZ color-matching functions with ... | 09/02/2008 |
| 7420663 | Spectroscopic sensor on mobile phone This invention discloses a spectroscopic sensor that is integrated with a mobile communication device, such as a mobile phone. The spectroscopic sensor is capable of measuring the optical spectra of a physical object for purposes of detection, identification, authen... | 09/02/2008 |
| 7420677 | Sensing photon energies of optical signals An integrated circuit includes a photosensor array with subrange cells that photosense within respective subranges of an energy range. An optical signal and the array move relative to each other, and, for segments of their relative movement, sets of subrange cells p... | 09/02/2008 |
| 7417727 | Method and apparatus for standoff detection of liveness A method for remotely detecting whether a subject is alive, comprising the steps of determining a calibration spectral signature for light reflectance from living skin, normalizing the calibration spectral signature values to the calibration reflectance value at a r... | 08/26/2008 |
| 7414724 | Light diffuser used in a testing apparatus An apparatus for photometrically testing several specimens each irradiated by a light source, the light altered by the specimens being detected by an optical device and analyzed, the apparatus including a light source, a plurality of sample holders configured adjace... | 08/19/2008 |
| 7400404 | Apparatus and method for measuring color Color measuring systems and methods are disclosed. Perimeter receiver fiber optics are spaced apart from a central source fiber optic and receive light reflected from the surface of the object being measured. Light from the perimeter fiber optics pass to a variety o... | 07/15/2008 |
| 7397541 | Apparatus and method for measuring optical characteristics of an object Color/optical characteristics measuring systems and methods are disclosed. Perimeter receiver fiber optics/elements are spaced apart from a central source fiber optic/element and received light reflected from the surface of the object is measured. Light from the per... | 07/08/2008 |
| 7397562 | Apparatus and method for measuring optical characteristics of an object A method for determining spectral characteristics of an object is disclosed. A probe is positioned in proximity relative to the object and provides light to a surface of the object and receives light from the object. One or more critical heights are defined below wh... | 07/08/2008 |
| 7394541 | Ambient light analysis methods, imaging devices, and articles of manufacture Ambient light analysis methods, imaging devices, and articles of manufacture are described. According to one aspect, an ambient light analysis method includes emitting light using a source, first filtering the light of the source providing first filtered light, firs... | 07/01/2008 |
| 7394543 | Spectral selection and image conveyance using micro filters and optical fibers The present invention features a fiber optic imaging system for generating a customized spectral response comprising (a) an optional optical source for generating optical energy, (b) an optical system for focusing multi spectral optical energy to form a focal surfac... | 07/01/2008 |
| 7391514 | Colorimeter A calorimeter for measuring a color of light includes a color sensing device, a suspension means and a counterweight. The suspension means suspends the color sensing device in an operative relationship relative to a color producing device, while the counterweight is... | 06/24/2008 |
| 7391008 | Method and system for wavelength-dependent imaging and detection using a hybrid filter Apparatus and methods for wavelength-dependent detection are provided. A detector includes a hybrid filter having unpatterned and patterned filter layers and at least one light-detecting sensor that detects light in first and second wavelength bands from the pattern... | 06/24/2008 |
| 7388665 | Multicolour chromaticity sensor The present invention provides an optical sensor having one or more filter-photodetector pairs and feedback to monitor the intensity and chromaticity of the white light generated by an illumination system. According to the present invention, filter-photodetectors ar... | 06/17/2008 |
| 7382456 | Spectroscopic sensor for measuring sheet properties A spectroscopic sensor for measuring flat sheet product is disclosed. The disclosed sensor uses a combination of spectrometers and single-channel detectors and filters together with a broadband source of illumination to optimally measure multiple properties of a fla... | 06/03/2008 |
| 7372879 | Wavelength locker using modulator current and photodetector The wavelength of light emitted by a laser and modulated by a frequency response modulator is determined from the power of the emitted light and the current drawn by the modulator. From the temperature and current applied to the modulator and the optical power of th... | 05/13/2008 |
| 7372571 | Color sensing apparatus A colorimeter method and apparatus is described. The colorimeter includes a plurality of sensors/filter systems with non overlapping spectral responses, adequate for providing data capable of translation into standard coordinates system such as, CIE XYZ, CIE L*a*b*,... | 05/13/2008 |
