| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356229000 | Comparison | 12 |
| 20080239300 | Laser energy measuring unit and laser machining apparatus - There is provided a laser energy measuring unit whose laser energy measuring range is widened. The laser energy measuring unit has a filter provided within an optical path of laser to attenuate energy of the laser, a calculating section for measuring the energy of the laser passing through the filter and a condenser lens provided on one side of the filter for condensing the laser. The filter has a shading portion for blocking a center part of the laser beam from transmitting through the filter at position coincident with the center of the laser. The center part of the laser where its energy is large is cut by the shading portion and the calculating section measures the part where its energy is not so large. Thereby, it is possible to widen the laser energy measuring range. | 10-02-2008 |
| 20090122302 | SYSTEM AND METHOD FOR CLADDING MODE DETECTION - According to an exemplary embodiment, systems and methods can be provided for compensating for, reducing and/or eliminating data associated with at least one aberration provided within a sample. For example, using such exemplary systems and methods, it may be possible to transmit at least one first electromagnetic radiation to the sample via an optical fiber. At least one second electromagnetic radiation can be received from the sample, and the first and second radiations may be associated with one another At least one first intensity of at least one portion of the second radiation within a core of the optical fiber and at least one portion of at least one second intensity of the second radiation within a cladding of the optical fiber at least partially surrounding to the core can be detected. Further, the first radiation and/or the second radiation can be modified as a function of the first and second intensities so as to compensate for, reduce and/or eliminate the data associated with the aberration. | 05-14-2009 |
| 20090237651 | Verifiable hand cleansing formulation and method - A hand cleansing formulation in the form of a soap/disinfectant (liquid, foam, cream or powder) in solution contains a marker agent (e.g., fluorescent or phosphorescent agent(s)) aggregated with a non-marker binder material. By vigorously scrubbing the hands together, as required by a proper hand washing procedure, the aggregates are dissociated to allow the measurement of the fluorescence/phosphorescence intensity under an activation light source, i.e., UV, IR. This intensity measurement directly relates to the thoroughness of the hand scrubbing steps, thereby allowing the thoroughness of hand scrubbing during a hand washing event to be judged and monitored. | 09-24-2009 |
| 20110001961 | SECURITY OPTICAL FIBER SENSOR - The invention relates to a security sensor ( | 01-06-2011 |
| 20110013180 | Method and Apparatus for Auxiliary Illumination for Detecting an Object - A detection system and method for detecting an object such as a vessel or a cap on a vessel. The system includes an imaging device having a lens with a field of view for registering and processing an image of the object, an illumination device(s) for actively illuminating the object, a dark background portion, and an auxiliary light reflective area(s) for passively illuminating an edge portion of the object using reflections of illumination from the illumination device(s). The auxiliary light reflective area(s) is/are disposed adjacent to the dark background portion out of the field of view of the lens. Images of the object are subsequently compared to images of reference objects. | 01-20-2011 |
| 20110205533 | OPTICAL SIGNAL MEASUREMENT DEVICE - A device connects to a male network connector of a network conduit, and connects to a female network connector of the network conduit. The female network connector is capable of communicating with the male network connector. The device also measures outputs of the male network connector and the female network connector. | 08-25-2011 |
| 20110235028 | PASSIVE TRANSLATIONAL VELOCITY MEASUREMENT FROM OPTICAL INFORMATION - The invention is a passive method to measure the translational speed of a visual scene using the distribution of light intensities. Measuring the speed of translation is useful for control, safety, management of resources, fuel efficiency, and many more application fields. It is however technically challenging because a wide-field translating scene projects on an image plane as a heterogeneous field of apparent speeds. The invention solves this problem by combining two principles: perspective distortion matching over a broad field of view, and temporal filtering variation. In conventional systems, an acquired image is calibrated to obtain linear coordinates. Instead, the invention uses the perspective distortion of the image to sample the visual scene at different linear wavelengths over the visual field. The result is a spatial sensitivity map of the visual scene. The obtained signal is then temporally filtered with cutoff frequencies proportional to the spatial sensitivity. The final result is the wide-spectrum computation of the ratio between temporal and linear spatial frequencies, in other words linear speed. The technique is passive because it does not require the emission of a reference signal. This is an advantage over active speed sensors mainly because of reduced power consumption, but it is an enabling factor for other applications. Where it is difficult or impossible using standard device-centered techniques, like on aircrafts or in fluids, the invention enables measuring absolute linear speed. The advantage over non-device-centered techniques like—GPS—is the independence from external infrastructures. The small computational overhead makes it ideal for mobile applications. | 09-29-2011 |
| 20120105834 | SYSTEMS AND METHODS FOR VISIBLE LIGHT SOURCE EVALUATION - Particular embodiments of the present disclosure relate systems and methods for evaluating visible light sources. According to one embodiment, a method of evaluating a visible light source including a semiconductor laser having a gain section, a wavelength selective section, and a phase section includes applying a gain drive signal to the gain section of the semiconductor laser at a gain modulation frequency, and applying a triangular wave drive signal to the wavelength selective section of the semiconductor laser at a wavelength selective modulation frequency that is greater than the gain modulation frequency. The light source emits a plurality of optical output pulses. Output power values of the optical output pulses at a selected wavelength are detected. The output power value of one or more selected output pulses is compared with an output power threshold value to generate an indication of whether the visible light source satisfies an output power specification. | 05-03-2012 |
| 20120212730 | ELECTROLUMINESCENT LIGHT OUTPUT SENSING FOR VARIATION DETECTION - An apparatus for detecting variations in light output of an electroluminescent (EL) device is described. The EL device includes a transparent substrate having a first edge extending in a first direction and a plurality of EL emitters disposed over the face of the substrate in the first direction, and some of the light emitted by each EL emitter travels through the substrate and out of the first edge. A light sensor physically separated from the first edge senses the light travelling out of the first edge. A controller stored first sensed light at a first time and second sensed light at a later second time and computes a variation in light output of one or more of the EL emitters in the EL device using the stored first sensed light and second sensed light. | 08-23-2012 |
| 356230000 | With light standard | 3 |
| 20090244526 | Fiber-Based Optical Alignment System - A low-cost alignment system suitable for aligning a wafer to a test fixture includes a bundle of optical fibers wherein at least one fiber serves to deliver illumination to the alignment target from an end thereof, and a plurality of receiver fibers, each having ends with a known spatial relationship to the end of the illuminator fiber. The ends of the fiber bundle have a known spatial relationship to the fixture. In some embodiments, the fiber bundle is disposed within the fixture such that there is an unobscured optical path between the wafer and the receiving and illuminating ends of the fibers. In some embodiments, the fiber bundle is coupled to a light source and a light sensor mounted on the fixture. In some embodiments the alignment target is one or more bonding pads disposed on a wafer. | 10-01-2009 |
| 20100033714 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE, OPTICAL SCANNER USING SAME, IMAGE FORMING APPARATUS USING OPTICAL SCANNER, AND RETURN LIGHT IDENTIFICATION METHOD - A semiconductor integrated circuit device controlling a first light amount of light emitted from a light source based on a second light amount of light entering a light amount detection part so that the first light amount becomes a target level is disclosed. The semiconductor integrated circuit device includes a comparison part configured to compare a voltage corresponding to the second light amount and a reference voltage corresponding to the target level; and a drive current control part configured to control a drive current supplied to the light source based on the result of the comparison by the comparison part. The drive current control part includes a return light identification part configured to determine whether the second light amount includes a third light amount of return light occurring discontinuously. | 02-11-2010 |
| 20150098080 | CHALLENGE SETS AND METHODS OF MAKING AND USING THE SAME - A surrogate challenge set including a plurality of containers containing a fluid, wherein at least one of the containers contains particulate matter; and reference probability-of-detection (POD) data for the at least one container containing the particulate matter is described. The fluid may be water containing at least about 0.5 wt % of a preservative, such as benzyl alcohol. The containers may be pharmaceutically acceptable containers such as vials, bottles, syringes, ampules and intravenous bags. The particulate matter may consist of a single particle having a particle size of at least about 50 μm. A method of making the challenge set may include: disposing particulate matter in at least one of a plurality of containers comprising a fluid; generating probability-of-detection (POD) data for the plurality of containers; and including the probability-of-detection (POD) data in the challenge set. Methods of using the surrogate challenges sets are also provided. | 04-09-2015 |
