Patent ID: 9217844
Filing Date: 2015-12-22
Classification: G02B

Abstract:
1. An imaging lens module comprising: an optical lens set including first, second and third optical lenses that are arranged sequentially from an object side to an image side along an optical axis of said imaging lens module, a constant-aperture diaphragm disposed between said first optical lens and said second optical lens; wherein said imaging lens module satisfies the following optical conditions: in which, TL represents a length from an imaging plane to said object-side surface of said first optical lens along the optical axis, Dg represents a length of a diagonal line of a maximum viewing angle on the imaging plane, R3 represents a radius of curvature of said object-side surface of said second optical lens, R4 represents a radius of curvature of said image-side surface of said second optical lens, ct1 represents a thickness of said first optical lens along the optical axis, and ct2 represents a thickness of said optical lens along the optical axis.