液晶型テーブルトップシステムにおける偏光の応用 : 光学フィルムを用いた透明マーカの開発

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タイトル別名
  • A Study on Polarization on an LCD Tabletop System : Development of a Transparent Marker using Optical Films
  • エキショウガタ テーブルトップ システム ニ オケル ヘンコウ ノ オウヨウ コウガク フィルム オ モチイタ トウメイ マーカ ノ カイハツ

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抄録

Liquid Cristal Displays are getting larger, thinner, lighter, and cheaper. They have many advantages when they are used as a tabletop compared to the projector-based tabletop. As is well known, a light from the LCD is polarized and it is blocked when a polarized film is placed as its axis of polarization is perpendicular to that of the LCD. On the other hand, an additional polarized film cancels this image blocking when it is placed on the LCD. By using this optical phenomenon, we developed transparent markers which are almost invisible to human but are still visible to the camera. Moreover, we succeeded to make the markers rotation invariant by using two half waveplates. Tangible transparent Magic Lens applications which use the transparent markers are also shown.

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