Patent ID: 7800833

Claim:
An electronic imaging apparatus including a zoom lens, wherein: said zoom lens comprises at least two lens groups; said zoom lens is adapted to implement zooming by changing a spacing between the respective lens groups; and said zoom lens comprises at least one positive lens element on an imaging device side with respect to an aperture stop, with satisfaction of the following conditions (1), (2) and (3)′: |α t −α w |>8 (1) 1.0×10 −3 <P< 4.0×10 −3 (2) 5 <f t /f w <50 (3)′ where f w is a focal length of a whole zoom lens system at a wide-angle end, f t is a focal length of the whole zoom lens system at a telephoto end, α w is an angle (°) with an optical axis of a chief ray for an image height defined by a farthest off-axis chief ray X 0.8 at the wide-angle end upon incidence on the imaging device on condition that a positive sign indicates that a height of a ray passing through a surface of the imaging device is lower than that of a ray passing through a surface of a lens just in front of the imaging device wherein the height of a ray refers to a distance between a position of the ray incident on the lens surface and the optical axis, α t is an angle (°) with the optical axis of a ray for an image height defined by a farthest off-axis ray X 0.8 at the telephoto end upon incidence on the imaging device on condition that the height of a ray passing through the surface of the imaging device is lower than that of a ray passing through the surface of the lens just in front of the imaging device, and P is a pixel pitch of the imaging device (in mm).