LENS FOR AUTOFOCUS AUXILIARY LIGHT SOURCE AND AUXILIARY LIGHT SOURCE DEVICE

摘要

PROBLEM TO BE SOLVED: To improve autofocus accuracy in the longitudinal direction of a photographing area even in photography in the dark. SOLUTION: The lens for an autofocus auxiliary light source having a domed outer surface and a circular bottom part is the lens 5 of the autofocus auxiliary light source whose cross sectional shape (5A) in a first direction corresponding to the longitudinal direction of the photographing area of a camera has a rise part rising to the outside in comparison with the cross sectional shape (5B) of the outer surface in a second direction orthogonal to the first direction, and whose bottom part has an external shape in the shape of a right circle. The autofocus auxiliary light source device includes the lens 5. COPYRIGHT: (C)2008,JPO&INPIT