| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent lowering of light intensity and make a projection distance longer. <P>SOLUTION: A fill light projection part that includes a luminescence unit and a spectroscopic prism projects a focus detection pattern onto a subject. A focus detection part that includes multiple line sensors on a light-receiving surface receives light of the focus detection pattern reflecting the subject, and detects a focusing state of a camera lens. As to a luminescence part for emitting hollow-out and dotted spot lights four luminescence parts are arranged at a corner of a square, respectively. The stereoscopic prism disperses four combined patterns horizontally and vertically, and projects them by partially overlapping the four patterns so as to make them dense at each center on the line sensors 84 to 92 and to make them rough at each circumference thereof. <P>COPYRIGHT: (C)2012,JPO&INPIT |
