| 主权项 |
1. An imaging lens assembly, comprising:
an optical lens set including first, second and third optical lens elements that are arranged sequentially from an object side to an image side along an optical axis of said imaging lens assembly, said first optical lens element having a positive refractive power near the optical axis, said first optical lens element having a convex object-side surface that faces the object side, and a concave image-side surface that faces the image side, said second optical lens element having a negative refractive power near the optical axis, said second optical lens element having a convex image-side surface that faces the image side, wherein at least one of an object-side surface and said image-side surface of said second optical lens element is aspheric, said third optical lens element having a refractive power near the optical axis, said third optical lens element having a convex object-side surface that faces the object side, and a concave image-side surface that faces the image side, wherein at least one of said object-side surface and said image-side surface of said third optical lens element has an inflection point; and a fixed aperture stop disposed between the object side and said first optical lens element; wherein said imaging lens assembly satisfies the following optical conditions:
2.0<OL/EPD<2.5,Vd2−Vd3>20,0.25<EPD/SD32<0.35,in which, OL represents a distance between said object-side surface of said first optical lens and said image-side surface of said third optical lens element along the optical axis, EPD represents an entrance pupil diameter of said imaging lens assembly, Vd2 represents the Abbe number of said second optical lens element, Vd3 represents the Abbe number of said third optical lens element, and SD32 represents a maximum clear aperture of said image-side surface of said third optical lens element. |
