Patent ID: 7957074

Claim:
An imaging lens system consisting of: in order from an object side thereof, a first lens which has a negative power; a second lens which has a negative power; a third lens; a fourth lens which has a positive power; a fifth lens; and a sixth lens which has a positive power, wherein the first lens is made of glass, the second to sixth lenses are made of plastic, at least one lens surface of each of the second to sixth lenses is aspheric, and each of the third lens and the fifth lens is made of a material having an Abbe number of 45 or less at the d-line, wherein a stop is disposed between the third lens and the fourth lens, and the following Conditional Expression (2) is satisfied: 2.5<( D 4 +D 5)/ f< 5.5 (2), where D4 is an air space between the second lens and the third lens, D5 is a center thickness of the third lens, and f is a focal length of the imaging lens system.