Image capturing device with an auto-focusing method thereof

摘要

An image capturing device includes a first image capturing module, a second image capturing module and a focusing and image processing module. The first image capturing module includes a plurality of first phase focusing detectors, and the field of view of the second image capturing module is smaller than the field of view of the first image capturing module. The plurality of the first phase focusing detectors are used for generating a plurality of first sets of optical sensing signals. When one of the plurality of the first sets of optical sensing signals are selected by the focusing and image processing module to provide a first focal signal according to the selected first set of optical sensing signal, the first image capturing module and the second image capturing module adjust respective focal distances according to the first focal signal.

主权项

1. An image capturing device, comprising:
a first image capturing module, comprising: a first lens module; a first image sensor disposed corresponding to said first lens module and comprising a plurality of first phase focusing detectors and a plurality of first image sensing pixels to provide respectively a plurality of first sets of optical sensing signals and a first image; and a first focusing device connected to said first lens module for adjusting a position of said first lens module; a second image capturing module, comprising: a second lens module with a field of view smaller than a field of view of said first lens module; a second image sensor disposed corresponding to said second lens module and comprising a plurality of second phase focusing detectors and a plurality of second image sensing pixels to provide respectively a plurality of second sets of optical sensing signals and a second image; and a second focusing device connected to said second lens module for adjusting a position of said second lens module; and a focusing and image processing module electrically connected to said first image capturing module and said second image capturing module; wherein said first focusing device and said second focusing device adjust respectively a position of said first lens module and a position of said second lens module according to a first focal signal when one of said first sets of optical sensing signals are selected by said focusing and image processing module to correspondingly provide said first focal signal to said first focusing device and said second focusing device; and said first focusing device and said second focusing device adjust respectively said position of said first lens module and said position of said second lens module according to a second focal signal when one of said second sets of optical sensing signals are selected by said focusing and image processing module to correspondingly provide said second focal signal to said first focusing device and said second focusing device; wherein said first phase focusing detectors are distributed in a first region of said first image capturing module, and said first region corresponds to a non-overlapped region of said fields of view of said first image capturing module and said second image capturing module.