Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Optics: measuring and testing

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
356450000 BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) 1391
356300000 BY DISPERSED LIGHT SPECTROSCOPY 1098
356003000 RANGE OR REMOTE DISTANCE FINDING 594
356237100 INSPECTION OF FLAWS OR IMPURITIES 545
356445000 OF LIGHT REFLECTION (E.G., GLASS) 459
356432000 FOR LIGHT TRANSMISSION OR ABSORPTION 451
356614000 POSITION OR DISPLACEMENT 444
356051000 INFRARED AND ULTRAVIOLET 377
356364000 BY POLARIZED LIGHT EXAMINATION 300
356601000 SHAPE OR SURFACE CONFIGURATION 299
356402000 BY SHADE OR COLOR 226
356073000 PLURAL TEST 220
356730100 FOR OPTICAL FIBER OR WAVEGUIDE INSPECTION 214
356337000 BY PARTICLE LIGHT SCATTERING 204
356625000 DIMENSION 162
356213000 PHOTOMETERS 152
356072000 WITH PLURAL DIVERSE TEST OR ART 147
356138000 ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT 144
356244000 SAMPLE, SPECIMEN, OR STANDARD HOLDER OR SUPPORT (E.G., PLATES OR SLIDES) 129
356399000 BY ALIGNMENT IN LATERAL DIRECTION 125
356027000 VELOCITY OR VELOCITY/HEIGHT MEASURING 117
356039000 BLOOD ANALYSIS 90
356124000 LENS OR REFLECTIVE IMAGE FORMER TESTING 79
356032000 MATERIAL STRAIN ANALYSIS 71
356335000 FOR SIZE OF PARTICLES 60
356128000 REFRACTION TESTING (E.G., REFRACTOMETERS) 57
356036000 WITH SAMPLE PREPARATION 42
356071000 DOCUMENT PATTERN ANALYSIS OR VERIFICATION 41
356243100 STANDARD 35
356121000 LAMP BEAM DIRECTION OR PATTERN 33
356600000 SURFACE ROUGHNESS 26
356388000 BY CONFIGURATION COMPARISON 25
356030000 CRYSTAL OR GEM EXAMINATION 25
356247000 FIDUCIAL INSTRUMENTS 16
356429000 BY MONITORING OF WEBS OR THREAD 16
356043000 OPTICAL PYROMETERS 12
356052000 EGG CANDLING 11
356123000 FOCAL POSITION OF LIGHT SOURCE 8
356070000 OIL TESTING (E.G., CONTAMINATION) 5
20090310127Laser-Induced Fluorescence Fiber Optic Probe Measurement of Oil Dilution by Fuel - Apparatus for detecting fuel in oil includes an excitation light source in optical communication with an oil sample for exposing the oil sample to excitation light in order to excite the oil sample from a non-excited state to an excited state and a spectrally selective device in optical communication with the oil sample for detecting light emitted from the oil sample as the oil sample returns from the excited state to a non-excited state to produce spectral indicia that can be analyzed to determine the presence of fuel in the oil sample. A method of detecting fuel in oil includes the steps of exposing a oil sample to excitation light in order to excite the oil sample from a non-excited state to an excited state, as the oil sample returns from the excited state to a non-excited state, detecting light emitted from the oil sample to produce spectral indicia; and analyzing the spectral indicia to determine the presence of fuel in the oil sample.12-17-2009
20090180101METHODS AND APPARATUS FOR ESTIMATING A DOWNHOLE FLUID PROPERTY - Apparatus and method for estimating a downhole fluid property using a carrier conveyable into a well borehole, one or more light sources carried by the carrier, the one or more light sources comprising at least one quantum cascade laser light source, a fluid sample cell that receives light emitted from the one or more light sources, and at least one photodetector that detects light emitted from the one or more light sources after the light interacts with a fluid in the fluid sample cell.07-16-2009
20100007874METHOD FOR ENSURING THE SAFETY OF THE COMPONENTS OF THE DRIVE TRAIN OF A VEHICLE FOLLOWING THE DETERIORATION OF THE FUEL - The invention relates to a method of ensuring the safety of the components of the drive train of a vehicle equipped with a heat engine, before or during its startup phase following a deterioration of the quality of the fuel contained in the tank (01-14-2010
20090279072OIL TYPE DISCRIMINATION METHOD AND OIL TYPE DISCRIMINATOR - To provide an oil type discrimination method and an oil type discriminator capable of accurately discriminating a type of oil even when light-shielding components exist in the oil and of preventing in advance erroneous discrimination of a mixture of oil.11-12-2009
20090244517METHOD FOR EVALUATING PURITY AND CONCENTRATION OF OILS AND FATTY ACID COMPOSITIONS - Methods for evaluation of fish oil, oils, omega-3 fatty acid compositions, and dietary supplements containing omega-3 essential fatty acids and other fats are provided herein. The relative purity and/or concentration of oil-containing aliquots can be determined by cooling approximately equal volumes of two or more aliquots to a temperature near or below 0 degrees Celsius. When cooled, the most opaque aliquots are the least pure. The invention also provide a method for determining whether an omega-3 fatty acid supplement is greater than 90% pure, which includes cooling the supplement to less than 0 degrees Celsius and a determining that the supplement is 90% pure if its appearance is essentially unchanged from its appearance and room temperature.10-01-2009
356344000 BY ELECTROPHORESIS 5
20100103416DNA Sequencing System - An apparatus for detecting labeled beads is provided. The apparatus can include: one or more irradiation sources disposed for irradiating the one or more detection zones with radiation; at least one detector disposed for collecting charges corresponding to light signals emitted from labeled beads in the one or more detection zones, which have been excited by the radiation; and a system coupled to the at least one detector for effecting time delay integration of the charges by accumulating the charges before reading the charges at the output of the at least one detector.04-29-2010
20090021735Time-delay integration in detection of labeled beads - An apparatus for detecting labeled beads is provided. The apparatus can include: one or more irradiation sources disposed for irradiating the one or more detection zones with radiation; at least one detector disposed for collecting charges corresponding to light signals emitted from labeled beads in the one or more detection zones, which have been excited by the radiation; and a system coupled to the at least one detector for effecting time delay integration of the charges by accumulating the charges before reading the charges at the output of the at least one detector.01-22-2009
20090027672Axial Illumination for Capillary Electrophoresis - System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light.01-29-2009
20090135421System for detecting markers - An apparatus for detecting labeled beads is provided. The apparatus can include: one or more irradiation sources disposed for irradiating the one or more detection zones with radiation; at least one detector disposed for collecting charges corresponding to light signals emitted from labeled beads in the one or more detection zones, which have been excited by the radiation; and a system coupled to the at least one detector for effecting time delay integration of the charges by accumulating the charges before reading the charges at the output of the at least one detector.05-28-2009
20120212740DNA Sequencing System - An apparatus for detecting labeled beads is provided. The apparatus can include: one or more irradiation sources disposed for irradiating the one or more detection zones with radiation; at least one detector disposed for collecting charges corresponding to light signals emitted from labeled beads in the one or more detection zones, which have been excited by the radiation; and a system coupled to the at least one detector for effecting time delay integration of the charges by accumulating the charges before reading the charges at the output of the at least one detector.08-23-2012
356023000 MOTION STOPPING (E.G., STROBOSCOPES) 3
20090040503SYSTEM AND METHOD FOR ANALYZING ROLLING STOCK WHEELS - An exemplary system and method for analyzing rolling stock wheels helps allow a wheel to be analyzed at speed, reducing any need for manual inspections or other related delays. An exemplary system may include one or more strobe lights and one or more high-speed cameras to capture images of the rolling stock wheel(s) at speed. The images may include one or more markers to assist in analyzing various parameters of the rolling stock wheel. The exemplary system may include one or more backface illumination plates to assist in illuminating the rolling stock wheel(s) and/or the one or more marker(s).02-12-2009
20120133920HIGH SPEED, HIGH RESOLUTION, THREE DIMENSIONAL PRINTED CIRCUIT BOARD INSPECTION SYSTEM - An optical inspection system includes a printed circuit board (PCB) transport and an illuminator that provides at least a first strobed illumination field. The illuminator includes a light pipe having a first end proximate the PCB, and a second end opposite the first end and spaced from the first end. An array of cameras is configured to digitally image the PCB and to generate a plurality of images of the PCB with the at least first strobed illumination field type. At least one structured light projector is disposed to project structured illumination on the PCB. The at least one array of cameras is configured to digitally image the PCB while the PCB is illuminated with structured light, to provide a plurality of structured light images. A processing device is configured to generate an inspection result as a function of the plurality of images and the plurality of structured light images.05-31-2012
20120229791MICROSCOPE - A microscope including an illumination device providing a light sheet illuminating a sample region, said sheet having a planar extension along an illumination axis of an illumination beam path and a transverse axis lying normal to the illumination axis. A detection device detects light emitted from the sample region on a detection axis the illumination axis and detection axis as well as the transverse axis and the detection axis being oriented relative each other at an angle unequal zero. The detection device has a detection lens system arranged in the detection beam path and splitting means for splitting the detection beam path into two beam sub-paths. A dichroic beam splitter in the infinity region of the surface detectors is about 3 mm thick. Wobble plate(s) disposed orthogonal to each other relative to the detection axis arranged in one of the two beam sub-paths so measured values can be automatically superimposed.09-13-2012
356002000 CONTOUR PLOTTING 3
20080198355Surface measurement of in-vivo subjects using spot projector - The invention provides for surface mapping of in-vivo imaging subjects using a single camera and an illuminator that projects a plurality of targets such as spots on the subject. By limiting the depth-of-field of the camera lens, or of the illuminator optics, or both, a spatial plane is defined in which the spots are most sharply in focus. Controlled displacement of this plane relative to the subject is achieved through movement of the mechanical stage on which a subject is placed; or through movement of the best-focus plane by adjustment of the camera, lens, or illuminator optics. Images are taken at several relative positions of the best-focus plane and the subject, and the height of individual points on the subject is determined through analysis of focus, given the known displacements. A mesh or other surface can be constructed from individual point locations, to provide a surface map of the subject. Accuracy of 0.5 mm can be readily attained for mice and similarly sized subjects.08-21-2008
20080204697Surface measurement apparatus and method using depth of field - The invention provides for surface mapping of in-vivo imaging subjects using a single camera and a moveable stage on which a subject animal for in-vivo imaging is placed. Images are taken and the stage is moved by known amounts along the optical axis, and the heights of individual features on the subject are determined through analysis of focus, given the known stage displacement. Alternatively, height of sub-regions of the subject are determined through analysis of focus. A mesh or other surface can be constructed from individual features, to provide a surface map of the subject. Accuracy of 0.5 mm or better can be attained for mice and similarly sized subjects.08-28-2008
20080218727METHOD AND APPARATUS FOR OPTICAL IMAGE RECONSTRUCTION USING CONTOUR DETERMINATION - The present invention relates to a method and a system for optical imaging of an object in transmission configuration. The method and system obtain contour coordinates of the object using source/detector configurations references and acquire optical data from a region of interest (ROI) of the object. Then, the method and system apply a weighting factor to said optical data as a function of the contour coordinates, and reconstruct an image of the ROI using the weighted optical data and photon diffusion equation.09-11-2008
356256000 MISCELLANEOUS 2
20090109434Cylindrical Model Eye, Cylindrical Test Device And The Manufacturing Method Thereof - A cylindrical model eye comprises a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface, a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface. The second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has substantially the same radius curvature radius as the second cylindrical surface.04-30-2009
20080246960Fiber Quality Transducer - A fiber quality transducer includes an inlet mixing probe, a rotating valve sleeve, a camera and a sampling cell. Slurry from a pulp tube flow enters a mixing chamber in the inlet mixing probe. The amount of slurry entering the mixing chamber is controlled by the rotating valve sleeve. The sampling cell includes a first sampling lens and a second sampling lens retained in a sampling bore. The first and second sampling lens are spaced apart to form a sampling space to facilitate the flow of diluted slurry. The camera is retained behind the first sampling lens and a LED back light is retained behind the second sampling lens. The diluted slurry flows past the sampling space. The camera photographs the fibers in the diluted slurry flow. The images from the camera are sent to analyzing software, which determine the characteristics of the fibers in the diluted slurry.10-09-2008
356426000 BY INSPECTION WITH AGITATION OR ROTATION 1
20120154809Device and Method to Measure Bulk Unconfined Yield Strength of Powders Using Minimal Material - A method bulk strength of powders uses acceleration forces to compact the powder into a small conical test cell that is rotated at high speed. Once the material is consolidated to a prescribed condition, the rotation is stopped, the outlet of the cell is exposed, and the cell is rotated again at increasing acceleration until material freely exits the cell. The forces generated on the powder in the cell are determined and used to compute the cohesive strength of the bulk material.06-21-2012
356908000 MEASURING LENGTH, WIDTH, OR THICKNESS (GO1B 11/02) 1
20100309488RECORDING MEDIUM IMAGING DEVICE AND IMAGE FORMING APPARATUS - There is provided a recording medium imaging device capable of properly selecting pixels used for determining the kind of the recording medium from the captured surface image to remove pixels from which the surface property of the recording medium cannot be properly determined because the pixels extremely high in light quantity are affected by some sort of dirt or scratches in determining the kind of a recording medium. This allows the determination of kind of the recording medium based on the normally captured surface image to reduce the decrease in accuracy in determining the kind of the recording medium.12-09-2010
356029000 OPTICAL ELEMENT OR RETICLE RESPONDS TO RELATIVE VELOCITY OF REMOTE OBJECT 1
20090237644SIGHT-LINE END ESTIMATION DEVICE AND DRIVING ASSIST DEVICE - A sight-line end estimation device includes a sight-line direction detection portion that detects a sight-line direction of a driver of a vehicle, a target object detection portion that detects the positions of target objects existing around the vehicle, a relative position acquisition portion that acquires relative positional information between the driver and the target object detection portion, and a sight-line end estimation portion that estimates the driver's sight-line end by detecting a target object whose position detected by the target object detection portion lies substantially in the driver's sight-line direction detected by the sight-line direction detection portion, factoring in the relative positional information acquired by the relative position acquisition portion.09-24-2009

Patent applications in class Optics: measuring and testing

Patent applications in all subclasses Optics: measuring and testing