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Method for non-contact measurement of body signal e.g. blink of eye, involves changing capacitance between spectacle and eye by applying conductive layer on spectacle such that capacitance change is converted into voltage change
Method for non-contact measurement of body signal e.g. blink of eye, involves changing capacitance between spectacle and eye by applying conductive layer on spectacle such that capacitance change is converted into voltage change
The method involves forming capacitance between spectacle lens and eye by applying conductive layer on spectacle lens. The resonant frequency of the non-linear oscillating circuit or frequency of excitation signal is changed with the change in capacitance between spectacle lens and eye such that the capacitance alteration is converted into voltage change.
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