Diasense, Inc.

Richard L Wiggins

David L Purdy

Dean S Grinch

Augustyn Waczynski

Paul Castro

Synchronous detection for photoconductive detectors

A method for accurately converting to an electrical signal a modulated optical signal, the modulation frequency of which randomly varies in a narrow range about a predefined optimum modulation frequency, includes the steps of receiving the optical signal at an optical detector, producing as an output of the optical detector an electrical signal corresponding to the optical signal, the amplitude of which electrical signal varies with frequency, and modifying the amplitude of the electrical signal, depending on the frequency of the electrical signal, inversely to the variation of the amplitude of the electrical signal with frequency caused by the optical detector.

Method and apparatus for converting a modulated optical signal to an

A method and apparatus for non-invasive determination of the concentration of at least one analyte in a mammal. A portion of the body of the mammal is irradiated with incident radiation, where the incident radiation includes two or more distinct bands of continuous-wavelength incident radiation. The resulting radiation emitted from the portion of the body is sensed and a value for the concentration of the analyte is derived therefrom.

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Indiana, PA, United States of America

Richard L Wiggins