LENS HAVING IR CUT OFF FILTER AND MANUFACTURING THEREOF AND CAMERA MODULE USING IT

摘要

A lens with an IR blocking film lens and a camera module using the lens are provided to reduce a height of the camera module by laminating two aspherical plastic lenses with first and second IR blocking films in a lens barrel. A lens with an integrated IR blocking film is insert-molded using a polymer group synthetic resin. The lens includes plural plastic lenses(20-23), which are laminated alone or mixed with a glass lens in a lens barrel(10). IR(InfraRed) blocking films are laminated on first surfaces of at least two plastic lenses. The IR blocking film includes plural IR blocking layers(24,25) which are laminated on a curved surface with a large curvature among aspherical plastic lens surfaces. Ten to fifteen IR blocking layers are laminated on the respective plastic lenses.