摘要:
In one embodiment, the present invention is a method and apparatus for cleaning an integrating sphere, such as an integrating sphere used in an integrating sphere spectrophotometer. One embodiment of a spectrophotometer includes an integrating sphere having a reflective interior surface, a primary light source configured to illuminate the interior surface when enabled, and a secondary light source configured to emit ionizing radiation onto the interior surface.
摘要:
The present invention relates to a measuring head for the analysis of respiratory gases to and from a patient connected to a respirator, wherein the measuring head includes an aperture (7) which is intended to be placed over an adapter (2) through which respiratory gases flow, wherein the measuring head (1) further comprises a light transmitter (9) which includes an IR-emitter (12) on one side of the aperture (7) and a light receiver (10) which includes an IR-detector on the other side of said aperture (7), and wherein the measuring head (1) also includes a signal processing unit (20) necessary for the gas analysis.
摘要:
Method and apparatus for the determination of total sulfur is described. The method of the present invention for the determination of total sulfur comprising the steps of (1) diluting a sample of a gas in a ozone containing atmosphere to oxidize the sample to form sulfur dioxide from the oxidizable sulfur containing components thereof, (2) subjecting the oxidized sample to infrared radiation at a wavelength selected for the absorption thereof by sulfur dioxide and (3) determining the sulfur content as a function of the infrared absorption. The sulfur dioxide is determined indirectly utilizing methodologies such as nondispersive infrared, or Fourier transformation infrared technology may be utilized in determining the concentration of SO 2 in the sample. The apparatus of the present invention includes a diluter (12) for the dilution of the sample gas with an oxygen containing gas and for the control of the flow rate of the diluted gas being monitored. The diluter communicates with a SO 2 detection unit (24) for the determination and read out of the sulfur content of the monitored gas sample as the result of the absorption of infrared radiation by the sulfur dioxide of the sample gas.
摘要:
Devices image radiation from a scene that includes two materials with spectral characteristics in two different wavelength regions. A lens forms an image of the scene on a detector that includes an array of elements. A filtering arrangement integrated with the detector allows half of' the detector elements to detect radiation in one of the wavelength regions and the other half of the detector elements to detect radiation in the other wavelength region. Each detector element can be constructed from two different sub-elements that are sensitive to radiation in one of the respective wavelength regions. A blackbody source positioned within the devices reduces drift induced by changes to the environment surrounding the devices. The blackbody source projects radiation onto a region of the detector that, does not receive radiation from the scene. Pixel signals produced from the scene radiation are modified based on pixel signals produced from the blackbody.
摘要:
In one embodiment, the present invention is a method and apparatus for cleaning an integrating sphere (102), such as an integrating sphere (102) used in an integrating sphere spectrophotometer (100). One embodiment of a spectrophotometer includes an integrating sphere (102) having a reflective interior surface, a primary light source (116) configured to illuminate the interior surface when enabled, and a secondary light source (118) configured to emit ionizing radiation onto the interior surface.
摘要:
The device 1 comprises a floodlight unit 20 and a receiver unit 30 and a processing unit 40. The floodlight unit 20 applies an infrared light to the surface of a workpiece 50, and comprises a surface light source 21 and a focusing lens 23. The receiver unit 30 receives the infrared light reflected from the surface of the workpiece 50, and comprises a receiver sensor 31 and a filter 33, which passes the infrared light that has the wavelength which contaminants 51 on the surface absorb. The processing unit 40 evaluates the cleanliness of the surface of the workpiece 50 according to the absorbance of the infrared light reflected from the surface. And a receiving area Rb of the reflected infrared light from the surface is set smaller than an applying area Ra of the applied infrared light to the surface.
摘要:
The present invention relates to a measuring head for the analysis of respiratory gases to and from a patient connected to a respirator, wherein the measuring head includes an aperture (7) which is intended to be placed over an adapter (2) through which respiratory gases flow, wherein the measuring head (1) further comprises a light transmitter (9) which includes an IR-emitter (12) on one side of the aperture (7) and a light receiver (10) which includes an IR-detector on the other side of said aperture (7), and wherein the measuring head (1) also includes a signal processing unit (20) necessary for the gas analysis.
摘要:
Methods involving optical computing devices are disclosed. One exemplary optical computing device (300) includes an electromagnetic radiation source (201) configured to optically interact with a sample (202) and first and second integrated computational elements (302, 304) arranged in primary and reference channels (Al, A2), respectively, the first and second computational elements (302, 304) are configured to be either positively or negatively correlated to the characteristic of the sample (202). The first and second integrated computational elements (302, 304) produce first and second modified electromagnetic radiations (306, 308), and a detector (212, 216, 220) is arranged to receive the first and second modified electromagnetic radiations (306, 308) and generate an output signal corresponding to the characteristic of the sample (202).
摘要:
Methods involving optical computing devices are disclosed. One exemplary optical computing device (300) includes an electromagnetic radiation source (201) configured to optically interact with a sample (202) and first and second integrated computational elements (302, 304) arranged in primary and reference channels (Al, A2), respectively, the first and second computational elements (302, 304) are configured to be either positively or negatively correlated to the characteristic of the sample (202). The first and second integrated computational elements (302, 304) produce first and second modified electromagnetic radiations (306, 308), and a detector (212, 216, 220) is arranged to receive the first and second modified electromagnetic radiations (306, 308) and generate an output signal corresponding to the characteristic of the sample (202).