Patent Publication Number: US-2012026584-A1

Title: System and device for generating 3d images

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a system and a device for generating  3 D images. 
     2. Description of Related Art 
     Two projectors are often used to project images onto a screen from two different directions to achieve a 3D effect. Different two-dimensional image information is delivered due to the parallax generated by the eyes being separated by about 6.5 mm. Right and left images are transferred to the brain and then combined such that a 3D image is perceived. However, using two projectors consumes considerable resource and space. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of a system for generating 3D images in accordance with a first embodiment. 
         FIG. 2  is a schematic view of a system for generating 3D images in accordance with a second embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIG. 1 , a system  1  for generating a 3D image is illustrated. The system  1  includes a device  10  and a pair of stereo glasses  20 . The device  10  generates polarized images  13 , and the stereo glasses  20  separate the polarized images to both eyes. 
     The device  10  includes a reflective display  11 , two light sources  14   a  and  14   b,  a laser sheet  12   a  mounted below the light source  14   a,  a laser sheet  12   b  mounted below the light source  14   b,  and a controller  15 . 
     The reflective display  11  is for displaying images. In one embodiment, the reflective display  11  may be a liquid crystal on silicon (LCOS), or a micro-electromechanical systems (MEMS) display. 
     The two light sources  14   a  and  14   b  are oppositely placed in front of the reflective display  11 . In one embodiment, the two light sources  14   a  and  14   b  may be lasers or LEDs. 
     The controller  15  is for controlling the two light sources  14   a  and  14   b  to alternately emit light. 
     The laser sheet  12   a  polarizes light from the light source  14   a  to a P-polarized light, and the laser sheet  12   b  polarizes light from the light source  14   b  to an S-polarized light. 
     The reflective display  11  further receives the alternate P-polarized light and the S-polarized light from the light source  14   a  and  14   b,  and alternately reflecting a P-polarized image and a S-polarized image to the stereo glasses  20 . 
     The stereo glasses  20  include a P-polarized filter and a S-polarized filter. The P-polarization filter transmits the P-polarized image through one lens of the glasses. The S-polarized filter transmits the S-polarized image through the other lens of the glasses. Accordingly, a parallax is generated due to the eyes being separated by about 6.5 mm. The S-polarized image and P-polarized image are received and registered. Accordingly, a 3D image is perceived. 
     Referring to  FIG. 2 , the system  1  further includes an optical fiber  30 , one end of which is connected to the device  10  and the other end of which is connected to the stereo glasses  20 , transmitting the P-polarized images and the S-polarized images to the stereo glasses  20 . Alternatively, the optical fiber  30  can reflect the P-polarized images and the S-polarized images to a predetermined direction. 
     Although the present disclosure has been specifically described on the basis of the embodiments thereof, the disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the embodiments without departing from the scope and spirit of the disclosure.