NTT DoCoMo has developed a 3D display system for mobile phones and other devices,known as high-density directional images display - that endows the object with very smooth and natural appearing motion as the observer’s position changes (motion parallax) without the need for 3D glasses.The viewer moves around the static display, the transition from one image to the next is so smooth and imperceptible that the viewer has the illusion of moving around a 3D object.A built-in camera senses the position of the viewer (the angle from which the viewer is observing the display), and automatically adjusts to that viewing angle in real time to maintain the 3D effect.The 3D display is a high-definition liquid-crystal display to which a lenticular sheet has been attached, the latter essentially being a ribbed panel consisting of dozens of optical-grade cylindrical lenses arrayed in parallel vertical lines. The cylindrical lenses exhibit the 3D effect when viewed from a horizontal perspective, and diffuse light in the manner of ordinary glass when viewed from a vertical perspective.

NTT DoCoMo

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