COLORIMETRIC PROBE

摘要

PROBLEM TO BE SOLVED: To reduce the influence of disturbance light and electric noise to improve the measurement precision and also improve the freedom of measurement by comprising a transmitting means for cordlessly transmitting a colorimetric signal concerning the wavelength or light quantity of the light received by a light receiving means to a receiving means out of a colorimetric probe and an internal power source. SOLUTION: This colorimetric probe 3A is formed of a projecting means 1 closely fitted to a skin S to make a light of a prescribed wavelength area incident thereon and a light receiving means 2 for receiving the internal scattered light of the light incident on the skin S, and it further contains a transmitting means for cordlessly transmitting a colorimetric signal concerning the wavelength or light quantity of the received internally scattered light to the receiving means of a receiver out of the colorimetric probe 3A and an internal power source. A photodiode provided as the light receiving means 2 transmits the colorimetric signal concerning the light quantity of the received light to a memory within the colorimetric probe 3A every emission of four kinds of emitting wavelengths successively alternately performed. The accumulated colorimetric signal is transmitted to the receiving means of the receiver as the light signal from an infrared ray irradiation lamp 9 when the colorimetric probe 3A is put on the receiver.