Abstract:

A coherent imaging system for large size high quality 3D display in the air employing low resolution spatial light modulators was introduced.It decomposed and reconstructed optical wave-fronts based on digital optical phase conjugation using an adiabatic taper consisting of a large number of single-mode waveguides.Due to reciprocity of an optical path it canceld automatically the aberrations inherent in traditional optical lens systems and provided very large field depth.Real 3D images could be formed in front of the screen,while virtual 3D images could be created behind the screen.All of the 3D images could be watched at the same time by many observers with naked eyes.As the calculation show the imaging resolution could vary from 1 to 112 micrometers when 3D images are formed at a distance from 0.1 to 10 m in front of the screen.

Key words: optical information, 3D display, digital optical phase conjugation