Patent ID: 8543179

Claim:
A biomedical sensor device, comprising: a light source, configured for emitting infrared radiation; a probe array, for contacting to a user's skin and for detecting an electric wave signal from the skin, and comprising a substrate and a plurality of probes mounted on the substrate, wherein the substrate and the probes are non-opaque whereby the infrared radiation transmits through the probe array into the skin, wherein each of the probes comprises: a tip portion; a first stalk portion, comprising a top thereof connected to the tip portion, wherein a cross-sectional area of the top is larger than that of a bottom of the first stalk portion; and a second stalk portion comprising a bottom thereof connected to the substrate, and wherein the cross-sectional area of a top of the second stalk portion is smaller than that of the bottom of the second stalk portion; and a photo detector, configured for detecting an infrared signal by measuring the infrared radiation absorption by the skin.