Title :
The multitap lock-in CCD with offset subtraction
Author :
Spirig, Thomas ; Marley, Michael ; Seitz, Peter
Author_Institution :
Paul Scherrer Inst., Zurich, Switzerland
fDate :
10/1/1997 12:00:00 AM
Abstract :
An image sensor for the two-dimensional (2-D) synchronous detection of temporal properties of modulated optical wave fields is presented. Each pixel of this multitap lock-in CCD is capable of acquiring all optical data for the extraction of modulation amplitude, relative phase, background level, and higher order Fourier coefficients. By employing the pixels´ offset subtraction stages, a dynamic range of >100 dB was obtained experimentally
Keywords :
CCD image sensors; distance measurement; optical modulation; 2D synchronous detection; background level; dynamic range; higher order Fourier coefficients; image sensor; modulated optical wave fields; modulation amplitude; multitap lock-in CCD; offset subtraction; offset subtraction stages; relative phase; temporal properties; Charge coupled devices; Dynamic range; High-resolution imaging; Image sensors; Optical imaging; Optical interferometry; Optical modulation; Optical sensors; Pixel; Two dimensional displays;
Journal_Title :
Electron Devices, IEEE Transactions on
