The present invention provides a method for high precision alignment of a surface emitting laser and a lens in an optical module in which optical coupling between a surface emitting laser and other optical devices such as an optical fiber is realized via lenses, and a structure for providing the method. A lens member 101, in which the lenses 105 are arrayed at a depth t1 from a reference plane 102 and an alignment mark is provided at a depth t2 (t1