Patent ID: 7619832
Filing Date: 2009-11-17
Classification: G02B

Abstract:
1. An imaging apparatus configured to form an image on an image pickup element, the imaging apparatus comprising, in order from an object side to an image side: a first optical unit having a negative refractive power; a second optical unit having a positive refractive power; and a third optical unit including the image pickup element, wherein the first optical unit does not move during zooming, wherein the second optical unit moves toward the object side during zooming from a wide-end angle end to a telephoto end, wherein the third optical unit moves during zooming, wherein the second optical unit includes an aperture stop, a positive lens having convex surfaces on both sides, a negative lens having concave surfaces on both sides, and a positive lens having a convex surface on the object side, which are arranged in order from an object side to an image side, and wherein a focal length of the first optical unit (F