| 摘要 |
<p>An optical device (40) includes: a sealed container (42) having edge walls (4202) facing each other in a thickness direction of the container (42) and a side wall (4204) connecting both of the edge walls (4202); a first liquid (44) with polarity or electrical conductivity and sealed within the container (42); a second liquid (46) that is sealed within the container (42) and does not mix with the first liquid (44); and a voltage applying unit (56, 48, 52) for applying a voltage across the first liquid (44). The first and second liquid (44, 46) have equal specific gravity, and transmissivity of the first liquid (44) is lower than the transmissivity of the second liquid (46). An interface between the first liquid (44) and the second liquid (46) changes shape in response to a voltage applied by the voltage applying unit (56, 48, 52). The first liquid (44) is formed so as to have equal specific gravity to the second liquid (46) by mixing three or more kinds of liquids each having a different specific gravity.</p> |
