Optical module for healthcare electronics

Abstract

Optical module composed of light emitting diodes and photo-detector is the key component in measuring health information. We have developed a thin optical module with built-in EMI shield for measuring reflective blood oxygen saturation, pulse rate and breathing rate. With proper design in the shape of the encapsulation on the optical module, cross-coupling can be minimized. Also, with the new packaging design, the optical module can be easily modified for measuring blood oxygen saturation at different parts of the body. Reliability tests have been conducted on the optical module to investigate and evaluate its robustness including the shift in peak wavelength and emission power which will affect the accuracy of the pulse oximeter.