“Pop Up! : A Novel Technology of Shape Display of 3D Objects” by Nakatani, Kajimoto, Sekighuchi, Kawakami and Tachi

  • ©Masashi Nakatani, Hiroyuki Kajimoto, Dairokou Sekighuchi, Naoki Kawakami, and Susumu Tachi

Title:


    Pop Up! : A Novel Technology of Shape Display of 3D Objects

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Entry Number: 20


Description:


    Introduction

    Pop Up! is a novel visual + tactile display for presenting touchable 3D shapes using a pin-rod matrix to convey visual depth information. Due to its dense arrangement and long range of movement, it can display large-scale, dense objects such as human faces, geographical features and architectural structures. The effect is similar to a children’s “Pop up book,” where a flat surface transforms into a 3D form. Each pixel is composed of a simple component shown in figure 1. The pin-rod is driven up applying voltage to the actuator, and the pin-rod is driven down by cooling the actuator with an air fan through a slit in each plastic pipe. In addition, the driving method is scalable so that displays of any size can be constructed in the same way.

    For the SIGGRAPH 2004 exhibition, we developed a shape display composed of 1024 pin-rods with a 4mm pin interval. Each pin-rod has a maximum stroke of 30mm, and the height can be controlled within a 1mm accuracy.


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©Masashi Nakatani, Hiroyuki Kajimoto, Dairokou Sekighuchi, Naoki Kawakami, and Susumu Tachi

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