Patent · US Active

Fourier domain sensing

US8558998B2 · kind B2 · utility

11Cited by

5References

40Claims

0Family size

Assignee

The Regents of the University of Colorado, a Body Corporate · US

Inventors

Daniel Feldkhun · Boulder, US
Kelvin Wagner · Boulder, US

Key dates

Filing date	Sep 28, 2011
Grant date	Oct 15, 2013
Priority date	—
Expiry date	Mar 24, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/0075
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods and systems are disclosed of sensing an object. A first radiation is spatially modulated to generate a structured second radiation. The object is illuminated with the structured second radiation such that the object produces a third radiation in response. Apart from any spatially dependent delay, a time variation of the third radiation is spatially independent. With a single-element detector, a portion of the third radiation is detected from locations on the object simultaneously. At least one characteristic of a sinusoidal spatial Fourier-transform component of the object is estimated from a time-varying signal from the detected portion of the third radiation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.