18749024. ZOOM LENS, AND IMAGING APPARATUS INCLUDING THE SAME (CANON KABUSHIKI KAISHA)
ZOOM LENS, AND IMAGING APPARATUS INCLUDING THE SAME
Organization Name
Inventor(s)
TAKAHIRO Komiyama of Tochigi (JP)
ZOOM LENS, AND IMAGING APPARATUS INCLUDING THE SAME
This abstract first appeared for US patent application 18749024 titled 'ZOOM LENS, AND IMAGING APPARATUS INCLUDING THE SAME
Original Abstract Submitted
A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear lens group including one or more lens units. An interval between lens units disposed adjacent to each other changes during zooming. A first positive lens is disposed closest to an object and has a positive refractive power. The first lens unit is stationary for zooming, and consists of first and second partial units. The first lens unit and the second lens unit are disposed in order from the object side to the image side. Among air gaps on an optical axis of lenses disposed adjacently in the first lens unit, an air gap on the optical axis between the first and second partial units is the greatest. Predetermined inequalities are satisfied.