Optical pickup with light receiving element and holding member and method of manufacturing the same

A method of manufacturing an optical pickup including:

• a first light emitting element, fixed to a base via a holding member, for generating a light with which a recording medium is to be irradiated;
• a second light emitting element for generating a light having a center wavelength different from that of the light emitted from the first light emitting element;
• and a light receiving element for receiving a reflected light from the recording medium, the method comprising the steps of
• mounting the second light emitting element on the base;
• causing the light emitted from the second light emitting element to be reflected by the recording medium, and adjusting a position of the light receiving element so that the reflected light is incident on a predetermined optimum position of the light receiving element;
• after adjusting the position of the light receiving element, determining the position of the light receiving element relative to the base;
• after determining the position of the light receiving element, causing the light emitted from the first light emitting element to be reflected by the recording medium, and adjusting a position of the first light emitting element in three-dimensional directions so that the reflected light is incident on the optimum position of the light receiving element, while maintaining a state in which the first light emitting element is mounted on the holding member;
• after adjusting the position of the first light emitting element, applying a first adhesive between the holding member and the base and curing the first adhesive so that a first bonding portion is formed to fix the holding member to the base;
• and
• applying a second adhesive between the holding member and the base and curing the second adhesive so that a second bonding portion is formed to be sandwiched between the holding member and base and to cover an outer peripheral surface of the first bonding portion, the second adhesive having a higher curing shrinkage rate than the first adhesive, with a difference of 3.0% or less between the curing shrinkage rate of the first adhesive and that of the second adhesive.