Patent ID: 9467686
Filing Date: 2016-10-11
CPC Classification: G02B,G02F,G03B,G09G,H04N

Claim Text:
1. A stereoscopic display device comprising: a display panel configured to display images for a plurality of viewpoints, the images having parallax and being arranged regularly; a light beam convertor disposed adjacent a front side of the display panel configured to form virtual lenticular lenses by controlling a voltage, the lenticular lenses being adapted to the images on the display panel and arranged at a certain interval; and a controller configured to control the display panel and the light beam convertor, wherein the controller changes a focal length of the virtual lenticular lenses formed by the light beam convertor depending on a distance between the display panel and a viewer; the controller reduces a number of the plurality of viewpoints when the distance between the display panel and the viewer becomes larger; and where S