Biological material measuring apparatus
AssigneeMitsubishi Electric Corporation
InventorsKosuke SHINOHARA, Kentaro ENOKI, Koichi AKIYAMA, Shimpei OGAWA, Daisuke FUJISAWA
Life of this patent
Estimating the term…
Abstract
A controller corrects a spectrum S (λ) detected at a wavelength λ of signal light to S′ (λ) in accordance with expressions below: I(λ)=(I2−I1)×(λ−λ1)/(λ2−λ1)−I1, and S′(λ)=S(λ)−I(λ), where I1 is the intensity of infrared light detected at a wavelength λ1 of reference light and I2 is the intensity of infrared light detected at a wavelength λ2 of correction light.
Claims17
The biological material measuring apparatus according to claim 15, wherein
- the controller is configured to correct a spectrum S (λ) detected at a wavelength λ of the signal light to S′ (λ) in accordance with expressions (A1) and (A2) below
- I(λ)=(I2−I1)×(λ−λ1)/(λ2−λ1)−I1 (A1)
- S′(λ)=S(λ)−I(λ) (A2)
- where I1 is the intensity of infrared light detected at a wavelength λ1 of the reference light and I2 is the intensity of infrared light detected at a wavelength λ2 of the correction light.
The biological material measuring apparatus according to claim 15, wherein
- the controller is configured to correct an intensity I1 of infrared light detected at a wavelength λ1 of the signal light to I1′ in accordance with expressions (A3) and (A4) below
- I(λ)=(I3−I2)×(λ−λ2)/(λ3−λ2)−I2 (A3)
- I1′=I1−I(λ1) (A4)
- where I2 is the intensity of infrared light detected at a wavelength λ2 of the reference light and I3 is the intensity of infrared light detected at a wavelength λ3 of the correction light.
The biological material measuring apparatus according to claim 15, wherein
- the ATR prism has a first end face, a second end face, a third end face, and a fourth end face, and
- the infrared light radiated from the infrared light source is incident on the first end face, and the infrared light that has been incident on the first end face passes through the ATR prism while repeating total reflection off the second end face and the third end face and is then emitted from the fourth end face.
The biological material measuring apparatus according to claim 15, wherein the infrared photodetector is configured to selectively detect a specific wavelength.
A biological material measuring apparatus comprising:
- an infrared light source configured to radiate infrared light including signal light, reference light, and correction light;
- an ATR prism adhereable to a living body surface;
- an infrared photodetector configured to detect infrared light emitted from the ATR prism;
- and
- a controller configured to correct a spectrum or an intensity of the signal light based on an intensity of infrared light detected at a wavelength of the reference light and a wavelength of the correction light.
Dependencies are inferred from the claim text.