| 摘要 |
<P>PROBLEM TO BE SOLVED: To display excellent optical performance in the entire area of the movement range of lens units and to reduce pixel flare etc., in the entire area of the movement range when the lens unit is used as a projection lens. <P>SOLUTION: A lens system which has a plurality of lens units 1G to 6G and is changeable in arrangement of the plurality of lens units along the optical axis is provided with a control mechanism which controls the eccentric state of at least one prescribed lens unit among the plurality of lens units according to change in arrangement. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
