Traditional oximeters use LEDs to illuminate red and near infrared light through the skin on one side of a translucent body part, usually a fingertip or an earlobe. Brighter, oxygen-rich blood absorbs a lot of infrared light, while dark, oxygen-poor blood absorbs a lot of red light. By analyzing the ratio of the two types of light passing through it to the other side of the body part, the oximeter can therefore determine the blood oxygen content.


Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.