| 摘要 |
PROBLEM TO BE SOLVED: To provide a zoom lens device suitable for a digital camera equipped with a zoom lens system which is bright even in the longest focal distance state though a zoom ratio is large, and whose length in an optical axis direction in housing is very short. SOLUTION: In the zoom lens device equipped with the zoom lens system and an imaging device for converting an optical image formed by the zoom lens system into electric image data in order from an object side, the zoom lens system includes a 1st group having negative power, a 2nd group having positive power and a 3rd group having positive power in order from the object side, is constituted so that the number of lenses having power may be equal to or under eight, and is set to satisfy a specified conditional expression. COPYRIGHT: (C)2005,JPO&NCIPI |
