1 November 1991 Imaging with frequency-modulated reticles
Author Affiliations +
Optical Engineering, 30(11), (1991). doi:10.1117/12.55994
Abstract
A novel imaging technique in which frequency-modulated retides encode different pixel locations by light modulation is presented. In this technique a reticle modulates different pixel locations at different frequencies, and photodetectors collect the resulting signals. Filters decode these signals to recreate the image on a display. The technique allows multiplexing many pixels onto a fewer number of detectors by utilizing the bandwidth of the detectors more effectively. Since frequency modulation creates an additional dimension for the detector, a single detector can function as a linear array, a linear array can function as a staring array, or the additional dimension can be used to convey spectral or other information. At wavelengths requiring expensive focal plane components, costs can be greatly reduced.
Jeffrey S. Sanders, Ronald G. Driggers, Carl E. Halford, Steven T. Griffin, "Imaging with frequency-modulated reticles," Optical Engineering 30(11), (1 November 1991). http://dx.doi.org/10.1117/12.55994
JOURNAL ARTICLE
5 PAGES


SHARE
KEYWORDS
Reticles

Sensors

Modulation

Frequency modulation

Imaging systems

Fermium

Mirrors

RELATED CONTENT

2-Frequency Laser Surface Prof Ilometry
Proceedings of SPIE (April 20 1987)
Portable Compact Multifunction IR Calibrator
Proceedings of SPIE (July 14 1988)
Optical disk system for digital video recording
Proceedings of SPIE (June 28 1999)

Back to Top