Abstract:
A detection device comprises a chip holder, a light source, a light-guide rod, a wavelength separation filter, and an optical sensor. Given the relationship between the angle of incidence and light intensity of fluorescence on a light reception surface of the optical sensor, the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of fluorescence incident on the light reception surface at a peak angle of incidence at which the light intensity is the highest is greater than the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of excitation light incident on the light reception surface at the peak angle of incidence and is higher than the optical transmittance of the wavelength separation filter at the dominant wavelength of the rays of fluorescence incident on the light reception surface at an angle of incidence of 0 DEG.
Abstract:
The invention relates to the detection of sparks in a channel where material flows. A spark sensing device (2) is positioned in connection with channel where material flows in a flowing direction. The spark sensing device comprises a sensor element (6) and an optical element (7) that transfers a radiation of a spark to the sensor element. The optical element is made of optically transparent material. The optical element is such that it shapes the collection beam of the sensor element to be asymmetrical whereby the viewing angle of the sensor element is wider in a direction transverse to the flowing direction (B) than in the flowing direction.
Abstract:
Devices are known for determining the concentration of at least one gas in a sample gas stream, having an analysis chamber (10) into which the sample gas stream and a reaction gas stream can be introduced, a detector (48) which measures the optical radiation emitted by the reaction, and a connecting channel (22) via which the analysis chamber (10) is connected to the detector (48). In order to increase the efficiency and measuring accuracy of these devices and to avoid deposits on the walls of the analysis chamber (10) the invention proposes forming the connecting channel (22) as a light conductor (26) which extends from the analysis chamber (10) to the detector (48).
Abstract:
A multi-channel fluorescence measuring optical system and a multi-channel fluorescence sample analyzer using the optical system are provided. The multi-channel fluorescence measuring optical system, which irradiates light onto a plurality of sample channels and detecting fluorescence radiated from samples, includes: a light source (60a-d); an integrator (70) for giving the light irradiated from the light source a uniform intensity distribution; a sample holder (80) having a plurality of sample channels on which the samples (m) are mounted, wherein the samples are exited by the light emitted from the integrator; and a beam splitter (75) between the integrator and the sample holder for dividing the incident light in a predetermined ratio. Since the light intensities of fluorescence images are detected using optical fiber bundles (85a-d) and photodiodes (89a-d), the manufacturing cost can be greatly reduced, and the optical system can be miniaturized.
Abstract:
A fuel injector for a gas turbine combustor is disclosed which includes a feed arm having a flange for mounting the injector within the combustor and a fuel nozzle (26) depending from the feed arm for injecting fuel into the combustor for combustion. An optical sensor array is operatively associated with the fuel nozzle for observing combustor flame characteristics. The optical sensor array includes a plurality of sapphire rods (194) positioned to be close enough to the combustor flame to oxidize soot deposits thereon.
Abstract:
The invention relates to a light guide device (102) for conducting a light beam (108) between a light source (107) and a measuring unit (114) for measuring a gas or substance concentration. The light guide device (102) comprises a light conductor (104) having at least one coupling section (106), which faces, or can be arranged to be turned toward, the light source (107), for coupling the light beam (108), and a decoupling section (110), which faces, or can be arranged to be turned toward, the measuring unit (114), for decoupling the light beam (108). The light conductor (104) is designed to conduct the light beam (108) between the coupling section (106) and the decoupling section (110) via total reflection on a boundary surface to a fluid or material surrounding the light conductor (104) which has a smaller refractive index than the light conductor (104). Furthermore, the light guide device (102) has a holding apparatus (120) which is designed to hold the light conductor (104) in the fluid such that at least one primary portion of a surface of the light conductor (104) contacts the fluid.
Abstract:
In a sample analyzing apparatus, an injector assembly injects a reagent onto a sample, and luminescent light from the sample is transmitted to a detector. The assembly may be movable toward and away from the sample. The assembly may include one or more needles that communicate with one or more reservoirs supplying reagent or other liquids. The assembly may include a light guide for communicating with the detector. A cartridge may be provided in which the assembly, one or more reservoirs, and one or more pumps are disposed. The cartridge and/or the apparatus may be configured for enabling rinsing or priming to be done outside the apparatus. The cartridge and/or the apparatus may include one or more types of sensors configured for detecting, for example, the presence of liquid or bubbles in one or more locations of the apparatus and/or the cartridge.
Abstract:
This detection device has a holder, light irradiation unit, angle adjustment unit, light receiving sensor, light receiving optical system, optical filter, and a control unit. The light receiving optical system guides light from a detection chip to the light receiving sensor. The optical filter is disposed in the light receiving optical system, blocks a part of plasmon scattered light, and passes, out of the light emitted from the detection chip, a part of the plasmon scattered light, and fluorescence emitted from a fluorescent material. The light receiving sensor detects the fluorescent light, and the part of the plasmon scattered light, which have been emitted from the detection chip and passed the optical filter. On the basis of the detection results of the plasmon scattered light, the control unit controls the angle adjustment unit, and adjusts the incident angle of the excitation light to a predetermined incident angle.