Abstract:
The present invention provides a brominated flame retardant determining method that determines whether or not a brominated flame retardant is contained in a determination target object by emitting light to the determination target object composed of resin, receiving reflected light from the determination target object emitted with the light, calculating an absorption spectrum of the determination target object based on the reflected light, and determining whether or not a brominated flame retardant is contained in the determination target object in the absorption spectrum, based on an absorption spectrum in at least one of wavelength bands including a wavelength band of 1.42 µm or more and 1.44 µm or less, a wavelength band of 1.45 µm or more and 1.47 µm or less, a wavelength band of 1.66 µm or more and 1.68 µm or less, a wavelength band of 1.72 µm or more and 1.74 µm or less, a wavelength band of 1.92 µm or more and 1.94 µm or less, a wavelength band of 2.11 µm or more and 2.12 µm or less, a wavelength band of 2.17 µm or more and 2.20 µm or less, and a wavelength band of 2.31 µm or more and 2.34 µm or less.
Abstract:
In a measuring probe (40) according to the present invention, measuring light is incident onto a single fiber (13C, 14C, 15C) before being received by a light-receiving sensor (13B, 14B, 15B) through an interference filter (13A, 14A, 15A). The interference filter (13A, 14A, 15A) is formed to obtain a transmittance characteristic corresponding to a measurement parameter, depending on a condition of an intensity distribution with respect to incidents angles of light incident onto the interference filter (13A, 14A, 15A). Thus, the measuring probe (40) according to the present invention can reduce an influence of a deviation in the transmittance characteristic due to incident angles, even with use of the interference filter (13A , 14A, 15A).
Abstract:
Certain examples described herein are directed to optical devices and systems that include first and second optical elements. In some examples, the first optical element may be configured to pass light received from an excitation source, and the second optical element may be optically coupled to the first optical element and may be configured to reflect incident light from the first optical element back to the first optical element and configured to pass the light reflected from the first optical element. Methods using the devices and systems are also described.
Abstract:
An optical interrogation system is described herein that can interrogate a label-independent-detection (LID) biosensor and monitor a biological event on top of the biosensor without suffering from problematical parasitic reflections and/or problematical pixelation effects. In one embodiment, the optical interrogation system is capable of interrogating a biosensor and using a low pass filter algorithm to digitally remove problematic parasitic reflections contained in the spectrum of an optical resonance which makes it easier to determine whether or not a biological event occurred on the biosensor.; In another embodiment, the optical interrogation system is capable of interrogating a biosensor and using an oversampling/smoothing algorithm to reduce oscillations in the estimated location of an optical resonance caused by the problematical pixelation effect which makes it easier to determine whether or not a biological event occurred on the biosensor.
Abstract:
Disclosed is a highly reliable optical fiber measurement device and measurement method having a simple and compact structure. The device includes a planar liquid holder having a plurality of liquid holding portions arranged along a flat face; a plurality of light receiving optical fibers for transmitting fluorescence generated in the liquid holding portions; a plurality of light emitting optical fibers for transmitting excitation light into the liquid holding portions; a measurement head capable of being positioned in the each liquid holding portion while supporting a plurality of measurement ends having a bundle of one light receiving end of the light receiving optical fibers and one light emitting end of light emitting optical fibers; a light reception selecting element that, by sequentially selecting one by one from plural the light receiving optical fibers and sequentially selecting one by one from plural kinds of wavelength or wavelength bands, sequentially guides the light of the selected wavelength or wavelength band of the fluorescence received by the selected light receiving optical fibers to one photoelectric element; and a photoelectric element for sequentially conducting photoelectric conversion on the guided fluorescence.
Abstract:
The optical probe contains a monolithic body (14) of optically transparent material to perform focusing for a plurality of parallel light paths from one or more fibers (10,12) to one or more object points (19). Surface parts (160,164,180,182) of the monolithic body are curved to form lenses (164,182) and/or coated with a reflective coating (160,180). On a fiber side of the monolithic body an opening or openings (168,164) are provided in a reflective coating opposite the tip or tips of the fibers (12,10) to pass light. On the object side of the monolithic body, a coated surface part (180) reflects the light path from the openings back to the fiber side of the monolithic body, from where the light path is reflected towards an aperture on the object side. At least part of the reflecting surfaces is curved to form reflector a plurality of distinct lenses on the same side of the monolithic body.
Abstract:
Devices, methods and systems for making optical measurements of a fluid at elevated pressures and temperatures are disclosed. A cell is designed for the optical spectroscopic measurements of fluids or gas using light from ultra violet (UV) to far infrared wavelengths, among other wavelengths. A cell is described that is well suited for applications using very small fluid volumes, on the order of micro liters, such as microfluidic systems. Some described embodiments are suited for very high pressure and temperature environments (for example, 20 kpsi or greater at 175 degree C. or greater). Such conditions, for example, may be found in oilfield downhole environments. Some embodiments provide are inexpensive, and make use of replaceable lenses that are used as a pressure barrier and for collimation of the optical beam path for spectroscopic measurements.