Abstract: In order to precisely determine a stable measuring region appropriate for a measurement of biological information, and to measure a concentration of a specific component, i.e. biological information, without inconsistency, a biological information measuring device is provided with, a measuring region determining means for determining a measuring region in between an eponychium and a distal interphalangeal joint; an information detector for applying a light to measuring region; a light source for entering a light to information detector; a light detector for detecting a light which exits from the information detector; and a processor for measuring specific component based on information obtained from light detector.

Abstract: An information detecting contact shoe, while contacting a portion-under-measurement, irradiates light, and detects transmitted light, reflected light, or scattered light from the portion-under-measurement. Non-invasive measurement of a particular component contained in the portion-under-measurement is performed. An exposing device is utilized which exposes a labial mucosa of a lip portion which is the portion-under-measurement. Further, a prism is attached to the exposing device.

Abstract: In order to solve the problem of a prior art biological attribute measuring device, i.e., measurement data is apt to vary because of unstable contact due to difficulty in controlling a thickness of a saliva layer and pain caused during the measurement, is provided a biological attribute measuring device including a contact device having a portion, at least part of which is a curved surface, for abutting against a measuring region to apply light to the measuring region, a light detecting means for detecting at least one selected from the group consisting of transmitted light, reflected light, scattered light and transmitted/reflected light from the measuring region and a measuring means for measuring a specific component in the measuring region based on the detection result.

Abstract: To provide a concentration measuring method which enables a stable and highly accurate concentration measurement while avoiding the step of making a background measurement.

Abstract: The present invention provides easy and stable measurement of the concentration of a specific component contained in a living body, even when a fluid such as water, saliva or sweat is present between an optical element and the living body or when the measurement is taken at a plurality of measuring parts of a living body. In the measurement of the present invention, a calibration line to be used to correct the influence of a change of a fluid layer present between a living body and an optical element is determined, a measured value is corrected based on the calibration line and the concentration is obtained from the corrected value.

Abstract: To provide an information measuring apparatus which enables stable and easy measurement of concentration information etc. of specific components in a sample even when fluids intervene between its optical device and the sample.