Optical effect generation device for creating illusion of e.g. card, at mobile telephone, has battery and appearance designed faces articulated with each other by returning unit, which restores battery designed face into visible position
摘要
<p>The device has an adherent face (13) with exact size of a battery of a mobile telephone and glued on the battery of the telephone. A battery designed face (12) and an appearance designed face (11) are glued on the adherent face for placing a pattern. The battery and appearance designed faces are glued with each other for placing another pattern. The faces (11, 12) are articulated with each other by an elastic returning unit (14), which naturally restores the battery designed face into a visible position.</p>
