Abstract
When a directional backlight to each eye alternates synchronously with the alternation of left-eye and right-eye images on the display panel, the viewer can see a stereoscopic image without wearing special goggles. One way to realize a directional backlight is to place a convex lens array in front of dot matrix light sources to generate collimated light. To implement this method, however, defocusing and field curvature of the lens should be taken into account. The viewing zone of an autostereoscopic display with a directional backlight using a convex lens array is analyzed based on optical simulations.
Highlights
Time-division multiplexing is one of the major methods to attain a stereoscopic display
One problem of the directional backlight composed of a convex lens array and a dot matrix light source is the defocusing and field curvature of the lens
The viewing zone of an autostereoscopic display using a directional backlight is composed of a convex lens array and a dot matrix light source is analyzed based on optical simulations
Summary
Time-division multiplexing is one of the major methods to attain a stereoscopic display. Another way to realize high resolution autostereoscopy is to use a directional backlight using a light guide film and a pair of light sources.[4,5,6] The autostereoscopy can be realized by switching the light sources and the image on the display panel synchronously. A common drawback of the time-division multiplexing autostereoscopic displays introduced so far is the limited number of viewers. They can display a stereoscopic image to a single viewer only. One problem of the directional backlight composed of a convex lens array and a dot matrix light source is the defocusing and field curvature of the lens These factors restrict the viewing zone of the autostereoscopic image. The viewing zone of the autostereoscopic display using a convex lens array is analyzed based on optical simulations
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