Zoom lens, projection type display device, and imaging apparatus

A zoom lens consisting of a first optical system and a second optical system in order from a magnification side to a reduction side along an optical path,

• wherein the second optical system forms an intermediate image at a position conjugate to a reduction side imaging plane,
• the first optical system reforms the intermediate image on a magnification side imaging plane,
• the zoom lens includes a lens at a position closest to the magnification side on the optical path of the first optical system,
• a group of which a distance to an adjacent group in an optical axis direction changes during zooming is defined as one lens group,
• the second optical system includes a plurality of lens groups that move during zooming,
• one of the plurality of lens groups that move during zooming is a lens group having an aperture stop that determines a numerical aperture,
• the lens group having the aperture stop has a negative refractive power, and wherein
• a focal length of the lens group having the aperture stop is fAp, and
• a focal length of the second optical system at a wide angle end is f2w,
• Conditional Expression (1) is satisfied, which is represented by
• 0.1<f2w/fAp<2.1 (1),
• the focal length of the lens group having the aperture stop is calculated by using every surface of the lens group having the aperture stop, and
• the focal length of the second optical system is calculated by using every surface of the second optical system.