| 摘要 |
<p>The purpose of the invention is to provide an optical pickup device which suppresses a decrease in the amount of light, performs a conversion to circularly-polarized light, and decreases the effect of the birefringence of an optical disk. The optical pickup device has a configuration whereby a polarized light optical system and an optical disk are arranged such that the angle which is formed by a line passing through the incident point of laser light with respect to the optical disk and the center point of the optical disk, and a line on which light incident to a rising mirror is projected toward the optical disk, is within the range of 0±10° or 90±10°, and are arranged so as to fulfill a prescribed relational expression.</p> |
