Abstract: Provided is an optical analyzer which can promote enhancement of measurement sensitivity, cost reduction, size reduction, structural flexibility, disturbance resistance, and the like, at the same time. A laser device to be used in such optical analyzer is also provided. An optical analyzer comprises a laser light source (2); a wavelength selection element (3) for selecting and leading out light having a wavelength substantially equal to the absorption wavelength of an analysis object from among light outputted from the laser light source (2); an optical detection means (5) for detecting the intensity of light red out from the wavelength selection element (3); and a drive current control means (6) for increasing or decreasing the drive current of the laser light source (2) near a specified current value thereof for outputting light of the absorption wavelength, and setting the drive current at such a current value as the intensity of light detected by the optical detection means (5) has a peak value.

Abstract: Provided is an optical analyzer which can promote enhancement of measurement sensitivity, cost reduction, size reduction, structural flexibility, disturbance resistance, and the like, at the same time. A laser device to be used in such optical analyzer is also provided. An optical analyzer comprises a laser light source (2); a wavelength selection element (3) for selecting and leading out light having a wavelength substantially equal to the absorption wavelength of an analysis object from among light outputted from the laser light source (2); an optical detection means (5) for detecting the intensity of light red out from the wavelength selection element (3); and a drive current control means (6) for increasing or decreasing the drive current of the laser light source (2) near a specified current value thereof for outputting light of the absorption wavelength, and setting the drive current at such a current value as the intensity of light detected by the optical detection means (5) has a peak value.

Abstract: The present invention relates to a method of measuring a physical or chemical phenomenon by feeding electric charge from an charge feeding portion to a sensing portion having potential changed depending on the magnitude of physical or chemical amount, removing the fed electric charge via a floating diffusion from the sensing portion, and detecting the amount of the fed electric charge thereby measuring the physical or chemical phenomenon, which comprises allowing the electric charge from the sensing portion to be accumulated in a stage before the floating diffusion, to release a part thereof, and simultaneously transmitting, to the floating diffusion, the amount of electric charge containing the electric charge corresponding to the potential corresponding to the magnitude of physical or chemical amount, wherein the release amount of electric charge is changeable.

Abstract: The present invention relates to a method of measuring a physical or chemical phenomenon by feeding electric charge from an charge feeding portion to a sensing portion having potential changed depending on the magnitude of physical or chemical amount, removing the fed electric charge via a floating diffusion from the sensing portion, and detecting the amount of the fed electric charge thereby measuring the physical or chemical phenomenon, which comprises allowing the electric charge from the sensing portion to be accumulated in a stage before the floating diffusion, to release a part thereof, and simultaneously transmitting, to the floating diffusion, the amount of electric charge containing the electric charge corresponding to the potential corresponding to the magnitude of physical or chemical amount, wherein the release amount of electric charge is changeable.

Abstract: A detector assembly for detecting a plurality of different properties at the same location at the same time is provided by integrating onto a single semiconductor substrate a first detector unit for measuring a first property and a second detector unit for measuring a second property. The first and second detector units can share, for example, a common element, such as a sensor device that can provide electrical output signals representative of, respectively, the first property and the second property. The common element can include a diaphragm with a pyroelectric element to provide a measurement of temperature and pressure.

Abstract: Method and equipment easily visualize various physical phenomena or chemical phenomena by simultaneously taking in, accumulating, and transferring data at a plurality of points. Electric charge is injected in potential wells constructed to vary the depth in accord with the magnitude of the physical or chemical quantity, and the physical or chemical quantity is converted into electric charge according to the depth of the potential wells.