| 摘要 |
<p>The focal point detection device has a micro-lens array (161) wherein multiple micro-lenses (161a) are arranged, a light-receiving element (162) that is provided with light-receiving parts (162a) provided corresponding to the aforementioned micro-lenses and that receives a light beam from an optical system through the micro-lenses, a contrast detection means (163) that detects contrast value in an image signal based on the output obtained by the light-receiving element, a calculation means (163) that calculates the integral values of the aforementioned contrast values, for multiple partial images in the image produced by said image signal, and a focal point detection means (163) that detects the focal point adjustment of the optical system based on the output of the aforementioned light-receiving parts corresponding to the aforementioned partial image with which the maximum value of the aforementioned integral values found by the aforementioned calculation means is obtained.</p> |
