OBJECTIVE LENS FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS

PROBLEM TO BE SOLVED: To provide an objective lens for an optical pickup device, the objective lens being able to make three types of optical disks compatible by a common object lens, able to restrict an increase in the diameter of a spot and, moreover, being excellent in easy manufacturability, and to provide an optical pickup device and optical information recording and reproducing device using the objective lens.SOLUTION: An outside wall OW is inclined between a center area and an intermediate area, thereby reducing a quantity of light passed through the center area and the intermediate area in accordance with a quantity of light that has fallen in a peripheral area. Thus, an increase in the diameter of a condensed spot is restricted.