Patent application number | Description | Published |
20120242979 | CONCENTRATION MEASUREMENT METHOD AND CONCENTRATION MEASUREMENT APPARATUS - A concentration measurement method by an absorptiometric method which measures a concentration of a first solute component dissolved in a solution, in which the first solute component interacts with a solvent, includes: referring to an absorption coefficient (μ | 09-27-2012 |
20130094025 | COMPONENT CONCENTRATION MEASUREMENT DEVICE AND COMPONENT CONCENTRATION MEASUREMENT METHOD - Light emitted from a light source section is split into measurement light and gate light by a splitter section. The measurement light is applied to an object by an irradiation section. Emitted light from the object is condensed by a condenser section, and relayed to a light conversion section by a relay section. The gate light obtained by the splitter section is guided to an optical shutter section. In this case, the gate light is changed in optical path length by a gate light guide section, and guided to a Kerr material section. A time-resolved waveform is calculated from a light intensity detection result at the optical path length that has been changed, and the concentration of a component contained in the object is calculated. | 04-18-2013 |
20140012103 | LIGHT ABSORPTION COEFFICIENT DISTRIBUTION ESTIMATION DEVICE, CONCENTRATION MEASUREMENT DEVICE, AND METHOD FOR CONTROLLING LIGHT ABSORPTION COEFFICIENT DISTRIBUTION ESTIMATION DEVICE - A light absorption coefficient distribution estimation device includes a detection section and a light absorption coefficient distribution estimation section. The detection section detects the received light intensity of scattered light from a subject at a plurality of light-receiving positions that differ in distance from an irradiation position at which measurement light is applied to the subject. The light absorption coefficient distribution estimation section estimates the light absorption coefficient distribution of the subject using the received light intensity, a propagation optical path length model that specifies a propagation optical path length on a basis of the distance, and a first model that specifies the received light intensity on a basis of the distance when absorption of light is at a predetermined value. | 01-09-2014 |
20140039282 | CONCENTRATION MEASURING DEVICE AND A METHOD OF CONTROLLING THE CONCENTRATION MEASURING DEVICE - A concentration measuring device, the measuring light in a wavelength region where an absorbance related to the water in the subject can be practically ignored is irradiated to the subject S by a light source. The transmitted light that was transmitted through the subject S is received in a light receiving part. An optical rotation calculation part calculates an optical rotation of the subject S by using an output signal from the light receiving part, and an absorbance calculation part calculates an absorbance of the subject S by using an output signal from the light receiving part. A concentration calculation part calculates a concentration of glucose by using a glucose measurement data related to an aqueous solution of simple glucose, a protein measurement data related to an aqueous solution of simple protein, the optical rotation calculated by the optical rotation calculation part, and the absorbance calculated by the absorbance calculation part. | 02-06-2014 |
20150216453 | OPTICAL ROTATION MEASUREMENT METHOD AND OPTICAL ROTATION MEASUREMENT APPARATUS - An optical rotation measurement method includes causing measurement light of a predetermined polarization to be incident on a subject from an incident direction that is a non-right angle to the subject, discriminating an optical rotation reflecting component of the predetermined polarization from reflected light that is reflected in a different direction to the incident direction of the subject, and measuring the optical rotation based on the discrimination result. | 08-06-2015 |
20150282739 | BIOLOGICAL INFORMATION ACQUISITION APPARATUS AND BIOLOGICAL INFORMATION ACQUISITION METHOD - A biological information acquisition apparatus includes a light source, a light-receiving unit, and a calculation unit. The light source is configured to irradiate a biological body with light. The light-receiving unit is configured to receive the light from the biological body. The calculation unit is configured to determine biological information. The calculation unit is configured to detect a first value by using a first signal from the light-receiving unit while the light source emits the light, detect a second value by using a second signal from the light-receiving unit while the light source does not emit the light, determine a temperature of the biological body based on the second value, and correct the first value using the temperature. | 10-08-2015 |
20160089063 | COMPONENT MEASUREMENT APPARATUS AND COMPONENT MEASUREMENT METHOD - The invention is provided to suppress a deterioration in the accuracy of measuring a component in a test object, which is caused by temperature variation due to irradiation with light. A blood sugar level measurement apparatus | 03-31-2016 |
20160089064 | LIVING BODY MEASURING LIGHT SOURCE SYSTEM AND LIVING BODY MEASUREMENT APPARATUS - A living body measuring light source system of a living body measurement apparatus outputs light with a power spectrum as measurement light, in which the light intensity of a characteristic bandwidth including a wavelength (a cause of a local small S/N ratio), which is likely to be absorbed in a known light absorption and scattering wavelength characteristic of a measurement-target living body that is a living body as a measurement target, is set to be higher than that of other bandwidths. | 03-31-2016 |
20160097712 | SIGNAL DETECTION METHOD, CALIBRATION CURVE CREATION METHOD, QUANTIFICATION METHOD, SIGNAL DETECTION DEVICE, MEASURING DEVICE, AND GLUCOSE CONCENTRATION MEASURING DEVICE - A signal detection method includes acquiring a measurement signal including a first signal, which is a signal of a target component, and a second signal, which is a signal of an interference component; and performing an orthogonal operation for adjusting the measurement signal such that the measurement signal is orthogonal to the second signal. | 04-07-2016 |