Biological information detector, biological information measuring device, and method for designing reflecting part in biological information detector

摘要

A biological information detector includes a light-emitting part, a reflecting part, a light-receiving part, a protecting part, and a processing part. The reflecting part has a curve shaped reflecting surface that is configured to reflect light emitted by the light-emitting part. The light-receiving part is configured to receive incident light that is emitted by the light-emitting part and reflected at a detection site of a user. The protecting part is configured to protect the light-emitting part, and the protecting part haw a contact surface adapted to contact with the detection site. The processing part is configured to process a light-receiving signal outputted from the light-receiving part. The light-emitting part has a light-emitting surface substantially in parallel to the contact surface, and a distance between the light-emitting surface and the contact surface is within a range of 0.4 mm to 0.9 mm.

主权项

1. A biological information detector comprising:
a light-emitting part; a reflecting part having a curve shaped reflecting surface that is configured to reflect light emitted by the light-emitting part, a light-receiving part configured to receive incident light that is emitted by the light-emitting part and reflected at a detection site of a user; a protecting part configured to protect the light-emitting part, the protecting part having a contact surface adapted to contact with the detection site; a processing part configured to process a light-receiving signal outputted from the light-receiving part; an acceleration sensor configured to detect acceleration generated by the user and to output an acceleration signal to the processing part to remove or reduce a body movement component in the digital signal outputted from the light-receiving part; a first A/D converter configured to convert the light-receiving signal from the light-receiving part into a first digital signal; and a second A/D converter configured to convert the acceleration signal from the acceleration sensor into a second digital signal, the light-emitting part having a light-emitting surface substantially in parallel to the contact surface, and a distance between the light-emitting surface and the contact surface being within a range of 0.4 mm to 0.9 mm, the processing part generating the biological information using the first digital signal and the second digital signal.