Abstract:
An optical arrangement comprising a multi-mode fibre (16) for carrying single mode laser light (12); a randomiser (18) for randomising spatial modes supported by the fibre and means for averaging out the randomised spatial modes to recover the single spatial mode.
Abstract:
The present invention describes a method for measuring the concentrations of species present at one point of a separation unit functioning in simulated moving bed mode (SMB), using an immersing probe located at one point in the unit or on one of the streams entering or leaving said unit, and a thermocouple located in the vicinity of the immersing probe, in which a Raman spectrum obtained using a laser source functioning at a wavelength of 785 nm is utilized.
Abstract:
An apparatus and methods for measuring combustion parameters in the measurement zone of a gas turbine engine. The measurement zone is defined as being between an outer casing and an engine component having a reflecting surface inside the outer casing. The apparatus comprises a laser generating a transmitting beam of light of a select wavelength and a multimode transmitting fiber optically coupled to the laser. A transmitting optic is optically coupled to the multimode optical fiber for transmitting the beam into the measurement zone. The reflecting surface is configured to provide a Lambertian reflection. A receiving optic is positioned to receive the Lambertian reflection. Means are provided in operative association with the multimode transmitting fiber for averaging modal noise induced signal level variation of light propagating within the multimode transmitting fiber.
Abstract:
PROBLEM TO BE SOLVED: To provide a new method of analysis for on-line concentration measurement of flow composition in hydrocarbon traveling within various separated bands of the simulated moving bed based on simultaneous measurement of Raman spectrum and temperature for a sample in the measuring point. SOLUTION: This invention is the method using an immersion probe and a thermocouple to measure concentration of a form existed in one point of a separator which functions in a manner of the simulated moving bed (SMB). The immersion probe is located in one of the flows entering or coming from one point inside the above separator or the separator itself, while the thermocouple is located near the immersion probe. Further the Raman spectrum obtained by using a laser light source which functions in wavelength of 785 nm is also used. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a tableting machine having an integrated measuring device 3 for measuring the quantitative content of at least one substance in tablets 9. SOLUTION: The tableting machine comprises at least one irradiation source 29 for emitting irradiation light of a near-infrared band to irradiate the tablet 9; an irradiation light detector 11 included in a measuring head 5 to receive the irradiation light reflected by the tablet 9; a spectroscope 13 receiving the irradiation light from the irradiation light detector 11 and supplying output signals corresponding to the intensity of the received irradiation light in multiple different wavelengths; and a device 17 for quantitatively measuring the content of at least one substance included in the tablets 9 and/or measuring the ratios of all or some components based on the output signals. The measuring device is suitable for measuring the respective single pressed tablets 9, and a trigger time for measurement is related to the transport speed of the tableting machine. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The present invention relates to an optical fiber connector for mating a first group of one or more optical fibers (102) with one or more corresponding optical fibers in a second group of one or more optical fibers(103). The optical fiber connector includes a shutter(105), which prevents the ingress of debris into the connector, and provides an optical reference surface with which to calibrate optical fibers that are inserted into the connector. The optical fiber connector finds application in the general optical fiber field, and more particularly finds application in the medical field in which it may be used to connect optical fibers in a photonic needle application.