Patent ID: 6836382
Filing Date: 2004-12-28
Classification: G02B

Abstract:
An imaging module for forming an image of an object on an image plane, said imaging module comprising:an electronic imager, said electronic imager having an active surface, the image plane being formed on the active surface with maximum effective dimension DI, an objective lens system having a focal length f0, a first lens element having a first surface facing the object and a second surface, the first lens element having a positive power and a focal length f1, a second lens element having a first surface facing the first lens element second surface, a second aspherical surface facing the image plane, the objective lens system having and a height TT, the first and second lens elements being shaped and spaced from suitable optical materials and formed to obtain the ratio of f1/f0 to be in the range of 0.5 to 2.0 to form the image of the object on the image plane.