Autostereoscopic display system and method
A three-dimensional (3D) display system is provided. The 3D display system includes a display device and an optical device. The display device is configured to display sets of images with parallax for a 3D display. The optical device has electric-signal-controllable optical parameters and is coupled with the display device. Further, the optical device is configured to enable directional light transmission so as to separate lights of the sets of images into predetermined viewing directions to effect the 3D display.
1. A method used in a three-dimensional (3D) display system including a display device configured to display at least two sets of images with parallax for 3D display and a switchable lens coupled with the display device and configured to enable directional light transmission so as to separate the sets of images into predetermined viewing directions to effect the 3D display, the method comprising:
receiving operational information of the 3D display system reflecting a change of operational condition of the 3D display system including at least an out-of-range parallax between the sets of images;
determining whether to adjust at least one system parameter including a width of the switchable lens with variable width and variable refractive index controlled by activating a number of horizontally-arranged electrodes included in the switchable lens based on the received operational information;
determining a target parallax range between the sets of images when it is determined to adjust the system parameter;
determining at least a new value for the system parameter of the switchable lens for adjusting the width and refractive index of the switchable lens based on the target parallax range between the sets of images to correct the change of operational condition; and
applying the new value to the switchable lens.
2. The method according to claim 1 , further including:
adjusting parallax between the sets of images after the new value is applied to the switchable lens; and
controlling the display device to display the sets of images based on the adjusted parallax.
3. The method according to claim 2 , wherein adjusting the parallax includes:
determining a change in a focal length of the switchable lens; and
adjusting the parallax of the sets of image by a predetermined percentage to minimize the effect of the change in the focal length.
4. The method according to claim 1 , wherein:
the operational information further includes at least a change in viewing distance of a viewer.
5. The method according to claim 4 , wherein:
the width of the switchable lens is adjusted based on the viewing distance.
6. The method according to claim 1 , wherein
the system parameter further includes a focal length of the switchable lens.
7. The method according to claim 6 , wherein applying the new value includes:
adjusting the number of activated horizontally-arranged electrodes of the switchable lens to change the width to the new value.
8. The method according to claim 6 , wherein applying the new value includes
adjusting the number of activated horizontally-arranged electrodes of the switchable lens to change the focal length to the new value.
9. The method according to claim 1 , wherein the at least one system parameter also includes a length of the switchable lens controlled by activating a number of vertically-arranged electrodes, and the method further includes:
adjusting the length t of the switchable lens by changing the number of activated vertically-arranged electrodes to correct the change of operational condition.
10. The method according to claim 9 , further including:
adjusting a size of the switchable lens by controlling the width of the switchable lens through activating a number of the horizontally-arranged electrodes and by controlling the length of the switchable lens through activating a number of the vertically-arranged electrodes.