| 摘要 |
PROBLEM TO BE SOLVED: To achieve a wide angle and compactness and improve optical performance of an imaging device. SOLUTION: This imaging device includes a first lens L1 having negative power, a second lens L2 having negative power, a third lens L3 having positive power, a fourth lens L4 having positive power, and a fifth lens L5, in this order from an object side. The first lens L1 is a glass lens. The second lens L2, the fourth lens L4 and the fifth lens L5 are plastic lenses. At least one lens surface of each of the second lens L2, the fourth lens L4 and the fifth lens L5 is aspheric. COPYRIGHT: (C)2009,JPO&INPIT
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