Color image projection based on Fourier holograms.
A method of color image projection is experimentally validated. It assumes a simultaneous illumination of a spatial light modulator (SLM) with three laser beams converging in a common point on a projection screen. The beams are masked with amplitude filters so that each one illuminates one third of the area of the SLM. A Fourier hologram of a chosen color component of an input image is calculated, and its phase pattern is addressed on a corresponding part of the SLM area. A full-color flat image is formed on the screen as a result of color mixing. Additional techniques of image optimization are applied: time-integral speckle averaging and an off-axis shift of a zero-order peak. Static and animated experimental results of such a color holographic projection with a good image quality are presented.
Makowski
Michal
M
Faculty of Physics, Warsaw University of Technology, 75 Koszykowa, 00-662 Warsaw, Poland. michal.makowski@if.pw.edu.pl
Ducin
Izabela
I
Sypek
Maciej
M
Siemion
Agnieszka
A
Siemion
Andrzej
A
Suszek
Jaroslaw
J
Kolodziejczyk
Andrzej
A