| 摘要 |
A device for detecting the presence of human skin including an illuminator source for providing an IR band capable of being absorbed by skin. A detector receives the IR band after the band has contacted the skin and provides a signal indicating the presence or absence of the IR band energy. A processing unit processes the signal and indicates whether skin has been presented when the band is substantially reflected, indicating no skin, and when it is substantially absent, indicating skin present. The preferred IR band wavelength is about 1.4 to about 2.2 mum.
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