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Information measuring device

A technology of information measurement and light detection device, which is applied in the direction of measurement device, scattering characteristic measurement, diagnostic recording/measurement, etc., and can solve problems such as difference in measurement results and signal quantity change

Inactive Publication Date: 2004-05-19
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] However, in the above-mentioned conventional optical measuring device, when the concentration information of the sample is measured with an optical element, when liquid such as saliva is interposed between the optical element and the sample, the thickness of the liquid reaches the sample due to changes in the thickness of the liquid. As a result, there is a problem that there is a difference in the measurement result due to a large change in the detected signal amount.

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Embodiment Construction

[0067] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0068] figure 1 Shown is a schematic configuration diagram of a specific component concentration measuring device as an example of an information measuring device in an embodiment of the present invention.

[0069] The specific component concentration measuring device of this embodiment is composed of a light source 1, an ATR element 2 as an example of the optical element of the present invention, a light detection device 5, and a spectroscopic device (not shown) provided between the light source 1 and the ATR element 2. constitute.

[0070] As the material of the ATR element 2, well-known materials in this field can be used without any particular limitation. For example, Si, Ge, SiC, diamond, ZnSe, ZnS, and KrS are mentioned. Here, the wave numbers are 1033 and 1080cm when measuring glucose -1 In the case of a substance with an absorption peak in the infrared re...

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Abstract

Provided is 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. An information measuring apparatus including: a light source 1; an ATR device 2 which reflects incident light from the light source 1 onto the sample kept in contact with itself, receives the light returned from the sample, and reflects the received light to the outside; and light detection means 5 which detects the amount of the light reflected from the ATR device 2 to the outside, the ATR device 2 having a first area, part of its surface, where it is in contact with the sample and the light for irradiating the sample is input and a second area adjacent to the first area, the contact angle in the first area being larger than that of the second area, wherein the information in the sample is measured based on the signal obtained through the light detection means 5.

Description

technical field [0001] The present invention relates to an information measuring device such as a specific component concentration measuring device for optically measuring specific component concentration information in a sample such as blood sugar, moisture, and cholesterol in a living body by measuring returned light from the sample. Background technique [0002] Conventionally, various methods of measuring specific components in a sample, particularly a living body or a solution, using an optical measuring device have been proposed. [0003] For example, a method has been proposed in which a transparent attenuated total reflection (hereinafter abbreviated as ATR) element having a pair of parallel reflecting surfaces facing each other is brought into close contact with the upper and lower lips to detect the blood sugar level. If this method is used, as the ATR element, the ATR prism composed of zinc selenide, silicon, germanium, etc. is held in the mouth, and in the state ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00G01N21/55
CPCA61B5/0059G01N21/552
Inventor 内田真司大岛希代子盐井正彦
Owner PANASONIC CORP