Display system for viewing images on the front and back surfaces of a screen

A display system comprising:

• a light source;
• at least first panel and second panels for transmitting first and second linearly polarized lights, respectively;
• a screen having a front surface and a back surface, the screen including a quarter wavelength plate;
• and
• at least first and second observation means for observing images displayed on the back surface of the screen,
• wherein the first and second linearly polarized lights are projected on the front surface of the screen simultaneously and transformed into first and second circularly polarized lights on the back surface of the screen.

A display system comprising:

• a light source;
• at least first panel and second panels for transmitting first and second linearly polarized lights, respectively, polarization directions of the first and second linearly polarized lights are different from each other;
• a screen having a front surface and a back surface;
• and
• at least first and second observation means for observing images displayed on the back surface of the screen,
• wherein the first and second linearly polarized lights are projected on the front surface of the screen simultaneously and transformed into first and second circularly polarized lights on the back surface of the screen.