| 摘要 |
An optical pick-up apparatus is provided to compensate chromatic aberration in order to correspond to various light sources at low cost. An optical pick-up apparatus comprises: an optical generating part emitting two kinds of lights having different wavelength; an optical path part providing an optical path in which the light coming out in an optical source module is reflected after being formed on a disc; an optical detecting part reading out electric signals from optical signals reaching through the optical path; and a zone plate(100) which is formed on the front of the optical detecting part in order to compensate chromatic aberration due to the lights having different wavelength. |
