| 摘要 |
An imaging lens system having an autofocus function using a liquid lens and an imaging apparatus using the imaging lens system is provided, in which the imaging lens system is configured with a smaller number of lenses to facilitate downsizing. The imaging lens system includes a first lens group 1 and a second lens group 2 in this order from the object side. The first lens group 1 includes a liquid lens system in which the curvature radius of the interface between an insulating liquid 12 and a conductive liquid 13 changes depending on an applied voltage. When the object distance is infinite, the curvature center of the interface between the insulating liquid 12 and the conductive liquid 13 of the liquid lens system is shifted toward the conductive liquid 13.
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