Patent ID: 6919996

Claim:
An objective lens for use in an optical pickup apparatus, comprising: a first lens molded with a plastic and having an optically functional section, a flange section provided around the periphery of the optically functional section, and a first contacting section provided on the flange section; and a second lens molded with a plastic, located opposite to the first lens and having an optically functional section, a flange section provided around the periphery of the optically functional section, and a second contacting section provided on the flange section, wherein the first lens and the second lens are jointed in such a way that the first contacting section and the second contacting section are brought in contact with each other, wherein the first lens has a first surface and a second surface and the second lens has a third surface and a fourth surface as an optically functional surface, and wherein when the objective lens has an object side and an image side, the first surface, the second surface, the third surface and the fourth surface are arranged in this order from the object side and the first surface and the third surface are a convex surface respectively, and wherein an outer diameter of the second lens is smaller than that of the first lens.