| 摘要 |
PURPOSE: A color changing device using polarization is provided to change colors through a polarizing unit exposed to the outside. CONSTITUTION: A color changing device (1000a) has a case (4). A first polarization means (10) is exposed to the outside of the case. A birefringent medium (20) is arranged in the rear of the first polarization means. A second polarization means (30) is arranged in the rear of the birefringent medium. A driving mechanism (50) rotates the birefringent medium. The first polarization means exposed to the outside shows a change in colors. |
