| 摘要 |
PROBLEM TO BE SOLVED: To provide a small and thin zoom lens having high imaging performance and an optical system with a large diameter, and provide an imaging apparatus and an information processing apparatus which use the zoom lens.SOLUTION: A zoom lens includes, in an order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power. In changing magnification, the first lens group is fixed, the second lens group is moved, the third lens group is moved, and the fourth lens group is fixed. The first lens group has a negative lens, a reflection optical element, and a positive lens in this order from the object side. The second lens group has a diaphragm, a positive lens, a cemented lens having a negative refractive power, and a positive lens in this order from the object side. The cemented lens has a positive lens and a negative lens. |
