Patent ID: 7486446

Claim:
An electronic imaging device comprising: a zoom lens; an electronic image sensor located on an image side of the zoom lens; and a display monitor which displays an object image received by the electronic image sensor, wherein the zoom lens comprises: a fixed lens unit remaining fixed on an optical axis when a magnification of the zoom lens is changed and a focusing operation is performed; a first moving lens unit lying on an image side of the fixed lens unit, moved along the optical axis when the magnification is changed; and a second moving lens unit moved along the optical axis when the magnification is changed; and an aperture stop that determines an F value at a wide-angle position of the zoom lens, wherein the fixed lens unit comprises a reflective optical component having a reflecting surface for reflecting an optical path, and wherein the electronic imaging device satisfies the following conditions: 1.8< fT/fw F≧a/ (1 μm) where fw is a focal length of an entire system at the wide-angle position of the zoom lens, fT is a focal length of the entire system at a telephoto position of the zoom lens, a is a horizontal pixel pitch of the electronic image sensor, and F is an open F value at the wide-angle position of the zoom lens.