| 摘要 |
<p>Provided are: a method that is for producing an objective lens and that is able at a low cost and favorable precision to produce an objective lens able to be assembled to an optical pickup device; an objective lens; and a method for inspecting an objective lens. Detection light (DL) is radiated towards the second flat surface (L2) of an objective lens (OL) from a detection device (SS). The detection light (DL) is reflected off of the second flat surface (L2) and returns again to the detection device (SS), and so is received by a CCD imaging surface or the like. At such a time, if the reflected light returns to a set position on the imaging surface, it is understood that the second flat surface (L2) is parallel to the optical axis of the optical pickup device. An anti-reflection coating is not formed at the second flat surface (L2), and so the strength of the reflected light from the second flat surface (L2) increases and it is possible to perform favorably precise detection.</p> |
