Anti-aliasing photodetector system

An anti-aliasing photodetector system for a powered ophthalmic device, such as a contact lens, may be utilized for any number of functions. The anti-aliasing photodetector system converts current from an array of photodetectors into a voltage for use in other aspects of the powered ophthalmic device...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Toner Adam Walter, Humphreys Scott Robert, Schweickert Robert Karl, Hoggarth Steven Phillip, Pugh Randall Braxton, Barrows Corey Kenneth
Format:	Patent
Sprache:	eng
Schlagworte:	COLORIMETRY CONTACT LENSES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIATION PYROMETRY SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TESTING
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Beschreibung
Zusammenfassung:	An anti-aliasing photodetector system for a powered ophthalmic device, such as a contact lens, may be utilized for any number of functions. The anti-aliasing photodetector system converts current from an array of photodetectors into a voltage for use in other aspects of the powered ophthalmic device. The anti-aliasing photodetector system comprises a photodiode array including a plurality of individual photodiodes, an integrate-and-hold circuit, including a capacitor and switch to convert current to voltage, and an analog-to-digital converter. The anti-aliasing photodetector system provides for low power consumption, a wide dynamic range, noise rejection, and is capable of detecting incident ambient visible light as well as incident infrared light.