OPTICAL LENS AND MANUFACTURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an optical lens which offers minimized optical axis tilt of lens elements incorporated into a lens module without requiring adjustment work during assembly.SOLUTION: A first lens element 31 and a second lens element 33 have annular opposing surfaces 42 formed in peripheral positions thereof. The annular opposing surface 42 of the second lens element 33 has a plurality of embossed elements 51 which protrude in an opposing direction and are spaced apart at an equal angle. When each lens element is mounted in a lens barrel 2 and if the second lens element 33 is found to be tilted relative to an optical axis L, an injection molding metal mold for the second lens element 33 is modified to change the height of each embossed element 51 so that the tilt is reduced.