| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption in comparison with the conventional one by adjusting focal distances of a plurality of variable focus optical elements, respectively. SOLUTION: This zoom lens unit 2 has an optical element group having a plurality of variable focus lenses 3a, 3b whose focal distances are adjustable and a controller 5 which controls the focal distances of the variable focus lenses 3a, 3b. COPYRIGHT: (C)2006,JPO&NCIPI |
