| 摘要 |
<p>In a lens device (40), since a CPU (30) adjusts the voltage imposed on a liquid optical element (1) according to the subject distance and temperature, focusing operation can be achieved without having a mechanical drive source. Moreover, the possibility of deviation of image forming position relative to a predetermined image forming plane is eliminated irrespective of changes in temperature, enabling best image formation to be achieved. Thus, it becomes possible to obtain an image of high quality despite compact size.</p> |
