Abstract: An optical parametric oscillator produces optical parametric light and includes a frequency splitter to produce signal light and idler light; a wavelength selector to select a wavelength of the signal light and to produce optical parametric light from the selected wavelength of the signal light; and an optical frequency doubler to double an optical frequency of the optical parametric light.

Abstract: An optical parametric oscillator produces optical parametric light and includes a frequency splitter to produce signal light and idler light; a wavelength selector to select a wavelength of the signal light and to produce optical parametric light from the selected wavelength of the signal light; and an optical frequency doubler to double an optical frequency of the optical parametric light.

Abstract: A simple matrix method and computer program product for stray-light correction in imaging instruments is provided. The stray-light correction method includes receiving raw signals from an imaging instrument and characterizing the imaging instrument for a set of point spread functions. For high resolution imaging instruments, the raw signals may be compressed to reduce the size of the correction matrix. Based on stray-light distribution functions derived from the point spread functions, a correction matrix is derived. This fast correction is performed by a matrix multiplication to the measured raw signals, and may reduce stray-light errors by more than one order of magnitude. Using the stray-light corrected instrument, significant reductions may be made in overall measurement uncertainties in radiometry, colorimetry, photometry and other applications. Because the PSFs may include other types of undesired responses, the stray-light correction also eliminates other types of errors, e.g.

Abstract: Systems and methods for measuring spectral distribution of an illumination source and providing desired output spectral radiance are described. The systems include a user defineable light source, an integrating sphere, and one or more light detectors.

Abstract: A method and apparatus for presenting a plurality of link devices as separate nodes within a single serial bus module by generating individual or a distinct configuration ROM image for each link device in the module. Each configuration ROM includes an entry for a distinct identifier representing the corresponding link device thereby creating a one to one mapping of link device to node via the distinct configuration ROM.

Abstract: A simple matrix method and computer program product for stray-light correction in imaging instruments is provided. The stray-light correction method includes receiving raw signals from an imaging instrument and characterizing the imaging instrument for a set of point spread functions. For high resolution imaging instruments, the raw signals may be compressed to reduce the size of the correction matrix. Based on stray-light distribution functions derived from the point spread functions, a correction matrix is derived. This fast correction is performed by a matrix multiplication to the measured raw signals, and may reduce stray-light errors by more than one order of magnitude. Using the stray-light corrected instrument, significant reductions may be made in overall measurement uncertainties in radiometry, colorimetry, photometry and other applications. Because the PSFs may include other types of undesired responses, the stray-light correction also eliminates other types of errors, e.g.

Abstract: A method and apparatus embodied in transaction layer software suitable for use with serial bus devices, such as IEEE standard 1394 serial bus devices for supporting multiple link device drivers. The invention acquires or otherwise ascertains the capabilities of link devices and provides link device driver configurations to such link devices based on the link device's capabilities and behaviors, among other factors.

Abstract: A dynamic configuration ROM which may be updated while linked to the serial bus and with little or no risk of publishing inconsistent configuration ROM information to the other nodes on the bus. The dynamic configuration ROM comprises first and second configuration ROM images, one set to active, the other set to update. The dynamic configuration ROM publishes the configuration entries form the “active” configuration ROM image. Modifications to the configuration ROM are stored in a database. The “update” configuration ROM image is constructed from entries made to the database. After the construction of the “update” configuration ROM image is completed, the dynamic configuration ROM switches the states of the ROM images and transmits a serial bus reset signal. Subsequently, the configuration entries from the newly “active” configuration ROM image are then published.

Abstract: A method and apparatus for presenting a plurality of link devices as separate nodes within a single serial bus module by generating individual or a distinct configuration ROM image for each link device in the module. Each configuration ROM includes an entry for a distinct identifier representing the corresponding link device thereby creating a one to one mapping of link device to node via the distinct configuration ROM.

Abstract: A method and apparatus embodied in transaction layer software suitable for use with serial bus devices, such as IEEE standard 1394 serial bus devices for supporting multiple link device drivers. The invention acquires or otherwise ascertains the capabilities of link devices and provides link device driver configurations to such link devices based on the link device's capabilities and behaviors, among other factors.

Abstract: A method and apparatus for presenting a plurality of link devices as separate nodes within a single serial bus module by generating individual or a distinct configuration ROM image for each link device in the module. Each configuration ROM includes an entry for a distinct identifier representing the corresponding link device thereby creating a one to one mapping of link device to node via the distinct configuration ROM.

Abstract: A radiometrically stable, spectrally tunable, solid-state source combines the radiometric outputs of individually controlled, narrow bandwidth, solid-state sources (e.g., LEDs) with different spectral distributions in an integrating sphere so as to approximate any desired spectral distribution. By using a sufficient number of independent solid-state source channels, the source can be tuned to approximate the spectral distribution of any desired source distribution. A stable reference spectroradiometer, integrated into the solid-state light source, measures the spectral radiance or irradiance and is used to adjust the output of the individual channels of the individually controlled sources.

Abstract: A system and method for providing dynamic configuration Read Only Memory (ROM) using double image buffers for use with serial bus devices. The dynamic configuration ROM may be updated while linked to the serial bus and with little or no risk of publishing inconsistent configuration ROM information to other nodes on the bus. The dynamic configuration ROM comprises first and second configuration ROM images, one set to active, the other set to update. The dynamic configuration ROM publishes the configuration entries from the active configuration ROM image. Modifications to the configuration ROM are stored in a database. The update configuration ROM image is constructed from entries made to the database. After the construction of the update configuration ROM image is completed, the dynamic configuration ROM switches the states of the ROM images and transmits a serial bus reset signal.

Abstract: A tight fitting, tubular cover designed to protect portable, (attached to bicycle), bicycle tire pumps. The cover itself is constructed of a stretchy material (10) to facilitate a tight fit around the tire pump. A zipper (20) is incorporated into the body (30) of the pump cover to ease insertion and removal of the pump into and out of the pump cover. When zipped shut, the pump cover forms a tight fitting barrier that protects the valve mechanism and other vital components of the bicycle pump from foreign matter. A clean pump is essential because during tire inflation a dirty pump nozzle can transmit debris to the valve core of the tires innertube, causing leakage.

Abstract: An acoustic sensing system to measure a geometry parameter such as, for example, position, orientation and/or shape of an object. The system includes a transmitter for transmitting acoustic wave energy at a single frequency, which acoustic wave energy, in an operating system, interacts with the object in a sensing region to provide reflected or scattered wave energy. A sensor mechanism consisting of many acoustic transducers is positioned to receive the reflected or scattered wave energy, each transducer being operable to convert the received acoustic wave energy to an electrical signal. A processor is connected to receive the electrical signals from the plurality of acoustic transducers; the processor is operable to obtain amplitude and phase information with respect to the electrical signal from each of the transducers, the amplitude and phase information from each of the plurality of transducers being combined and analyzed to derive a geometric parameter of the object.