Optical correlation by use of partial phase-only modulation with VGA liquid-crystal displays.
The development of liquid-crystal panels for use in commercial equipment has been aimed at improving the pixel resolution and the display efficiency. These improvements have led to a reduction in the thickness of such devices, among other outcomes, that involves a loss in phase modulation. We propose a modification of the classical phase-only filter to permit displays in VGA liquid-crystal panels with a constant amplitude modulation and less than a 2pi phase modulation. The method was tested experimentally in an optical setup.
Labastida
I
I
Departament de Física Aplicada i Optica, Universitat de Barcelona, Avinguda Diagonal 647, E08028 Barcelona, Spain. nasi@optica.ub.es
Carnicer
A
A
Martín-Badosa
E
E
Vallmitjana
S
S
Juvells
I
I