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7394919 Multispectral biometric imaging  
Methods and systems are provided for performing a biometric measurement on an individual. A purported skin site of the individual disposed relative to a platen is illuminated under distinct optical...
7386152 Noninvasive alcohol sensor  
Methods and systems are provided for biometric sensing. An illumination subsystem provides light at discrete wavelengths to a skin site of an individual. A detection subsystem receives light...
7366393 Light enhancing structures with three or more arrays of elongate features  
Various embodiments comprise light recycling films comprising an array of parallel ridges and grooves that form prisms that selectively reflect or transmit light. In some embodiments, the light...
RE40227 Totally internally reflecting thin, flexible film  
A thin, flexible film made of a transparent polymeric material including a structured surface and an opposite smooth surface, wherein light striking either surface, within certain angular ranges,...
7347365 Combined total-internal-reflectance and tissue imaging systems and methods  
Methods and systems are provided for combining total-internal-reflectance and tissue imaging to perform biometric functions. The system may include an illumination source, a platen, a light...
7330315 Light-redirecting optical structures  
A plurality of microstructures is provided, with each microstructure having at least a first side and at least a second side terminating at a peak. At least some of the peaks can include an...
7263213 Methods and systems for estimation of personal characteristics from biometric measurements  
Methods and apparatus are provided for estimating a personal characteristic of an individual. A biometric data measurement is collected from the individual. The personal characteristic is...
7250122 Differentially cured materials and process for forming same  
A structure includes a layer which includes a first cured portion and a second cured portion which are formed from a same light curable material. The first cured portion is cured to a first amount,...
7230764 Differentially-cured materials and process for forming same  
A light-redirecting optical structure includes a first side and a second side, the first side including plurality of linear prisms having a visibly random shaped surface on the prisms and a...
7203345 Apparatus and method for identification of individuals by near-infrared spectrum  
Methods and apparatus for non-invasively verifying human identities using near-infrared spectroscopy. Near-infrared tissue spectra can be obtained by projecting near-infrared radiation into skin on...
7147903 High efficiency optical devices  
Optical devices such as backlight assemblies, according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer....
7147153 Multispectral biometric sensor  
Methods and systems are provided for biometric sensing. An illumination subsystem provides light at discrete wavelengths to a skin site of an individual. A detection subsystem receives light...
7126682 Encoded variable filter spectrometer  
Spectroscopic system and spectrometers including an optical bandpass filter unit having a plurality of bandpass regions and a spatial encoding unit for encoding discrete frequencies of light...
7106936 Homogenizer for collimated light controlled high angle scatter  
A homogenizer for collimated light limits the angular distribution of the light by passing the light through a mild diffuser followed by a slab light guide which has top and bottom surfaces covered...
7027848 Apparatus and method for non-invasive spectroscopic measurement of analytes in tissue using a matched reference analyte  
A method is provided for building improved calibration models or for improving modifications to these models or validation of the models used in the non-invasive spectroscopic measurement of an...
6983176 Optically similar reference samples and related methods for multivariate calibration models used in optical spectroscopy  
Systems and methods for establishing and/or maintaining the prediction capability over time of a multivariate calibration model designed for quantitative optical spectroscopic measurement of...
6924014 High efficiency optical devices  
Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film...
6891677 Subwavelength optical microstructure light-redirecting films  
A waveguide for use in a back lighting device includes a moth-eye structured surface. A back lighting system includes a lighting device, a display panel, and a waveguide for redirecting light...
6865408 System for non-invasive measurement of glucose in humans  
An apparatus and method for non-invasive measurement of glucose in human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes...
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...
6816605 Methods and systems for biometric identification of individuals using linear optical spectroscopy  
Methods and systems are provided for identifying an individual. Electromagnetic radiation is propagated into tissue of the individual. A measured spectral variation is received in the form of...
6718189 Method and apparatus for non-invasive blood analyte measurement with fluid compartment equilibration  
A method and apparatus for non-invasively measuring the concentration of an analyte, particularly blood analyte in blood. The method utilizes spectrographic techniques in conjunction with means for...
6625380 Method of producing a hollow mixing rod, and a mixing rod  
In a method of producing a hollow mixing rod having a hollow space of quadrangular cross-section, the following steps are carried out: producing a first and a second side part, each of which has a...
6621973 Light guide with protective outer sleeve  
An illumination device including a light guide 22 surrounded by a protective sleeve 24 . The light guide 22 is hollow and includes a cylindrical wall 26 having a structured outer surface 28...
6612729 Illumination device  
An illumination device including a light guide 22 surrounded by a protective sleeve 24 . The light guide 22 is hollow and includes a cylindrical wall 26 having a structured outer surface 28...
6574490 System for non-invasive measurement of glucose in humans  
An apparatus and method for non-invasive measurement of glucose in human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes...
6570710 Subwavelength optical microstructure light collimating films  
A light collimating film has a sheeting having a first side and a second side, wherein the first side includes a series of linear optical elements having a primary axis running the length of the...
6481882 Light pipe fixture with internal extractor  
An illumination device for transmitting and/or distributing light with an extractor that extends distally into the interior of the light guide. The illumination device includes a hollow light guide...
6443585 Hollow cavity light guide for the distribution of collimated light to a liquid crystal display  
An optical light guide comprising optical elements enclosing a hollow cavity is configured to uniformly distribute homogenized collimated light to a liquid crystal display. The optical light guide...
6398421 Coupling system for a light conduit  
A coupling system for light conduits in a light distribution system and a light distribution system utilizing the coupling system. The coupling system includes first and second collars. The first...
6376576 Ceramer composition incorporating fluoro/silane component and having abrasion and stain resistant characteristics  
A curable ceramer composition, coated articles and methods for making and curing the composition. The curable ceramer comprises a fluoro/silane, a crosslinkable silane, a curable binder precursor,...
RE37594 Light guide employing multilayer optical film  
A light guide having a non-light emitting portion made up of multiple layers of first and second substantially non-absorptive longitudinally specular light reflector materials. The index of...
6356389 Subwavelength optical microstructure light collimating films  
A light collimating film has a sheeting having a first side and a second side, wherein the first side includes a series of prisms, and the second side includes a plurality of subwavelength optical...
6352758 Patterned article having alternating hydrophilic and hydrophobic surface regions  
An article is disclosed that has a patterned surface containing alternating hydrophobic and hydrophilic surface regions. The hydrophobic regions may be sufficiently narrow such that under dew...
6337946 Optical light pipes with laser light appearance  
A simulated laser light system includes a light source which emits substantially parallel light rays and a prismatic element having a plurality of prismatic surfaces. The prismatic surfaces define...
6325550 Thermally protective coupling for a light conduit lighting system  
A light directing, load bearing, thermally protective coupling for connecting a light conduit, such as a light pipe, to a light source includes a body member having a first end connected with the...
6285814 Light guide luminaire  
A light guide luminaire includes a longitudinal housing having a center and an inner surface, and a light guide formed of at least two sections of optical lighting film arranged within the housing...
6265061 Retroflective articles including a cured ceramer composite coating having abrasion and stain resistant characteristics  
A retroreflective article comprising a substrate and a cured ceramer coating provided on at least a portion of a surface of the substrate. The coated portion of the surface is retroreflective and...
6245833 Ceramer composition incorporating fluoro/silane component and having abrasion and stain resistant characteristics  
A curable ceramer composition, coated articles and methods for making and curing the composition. The curable ceramer comprises a fluoro/silane, a crosslinkable silane, a curable binder precursor,...
EP1085251A2 Hollow light conductor luminaire having a modular light extraction device  
The light fitting has a hollow light conductor supplied with light via at least one lamp and coupled to a light output surface via a light coupling device with at least one boundary surface between...
6185357 Illumination system using edge-illuminated hollow waveguide and lenticular optical structures  
An illumination system having a hollow waveguide including first and second light directing arrays (LDA), each having a plurality of generally lenticular prisms defined thereon and arranged...
6169839 Light distribution systems and illumination devices  
Illumination devices and light distribution systems utilizing overlapping joints, connector rings, end caps, assemblies for mounting light tubes to a ceiling or wall, and protective tubes.
6164782 Self-contained lighted marking device  
A self-contained lighted marking device that is a directionally dependent line light source has a substantially transparent housing. The housing has a narrow cross-section, preferably rectangular...
6160948 Optical light pipes with laser light appearance  
A simulated laser light system includes a light source which emits substantially parallel light rays and a prismatic element having a plurality of prismatic surfaces. The prismatic surfaces define...
6152578 Mounting assembly for a light conduit lighting system  
A mounting assembly for mounting a light pipe lighting system on a support surface includes an elongate support rail connect to the light source and a hanger bracket connect to the elongate support...
6132861 Retroreflective articles including a cured ceramer composite coating having a combination of excellent abrasion, dew and stain resistant characteristics  
A retroreflective article comprising a substrate and a cured ceramer coating provided on at least a portion of a surface of the substrate. The coated portion of the surface is retroreflective. The...
6130976 Coupling system for a light conduit  
A coupling system for light conduits in a light distribution system and a light distribution system utilizing the coupling system. The coupling system includes first and second collars. The first...
6031958 Optical light pipes with laser light appearance  
A simulated laser light system includes a light source which emits substantially parallel light rays and a prismatic element having a plurality of prismatic surfaces. The prismatic surfaces define...
6018607 Fiber optic light guide for measurement of illumination devices  
A fiber optic light guide for a measurement or illumination system is described, in which an inside space left free in a fiber optic light guide unit is bounded laterally by a closed wall formed by...
6014489 Light distributing tubes and methods of forming same  
Method and apparatus for forming hollow tubular light-distributing tubes for area illumination along the length of the tubes from a beam of light introduced into one end. Within the tube is a...
Matches 1 - 50 out of 108 1 2 3 >