METHOD FOR ADJUSTING SKEW OF OBJECTIVE LENS IN OPTICAL PICKUP

摘要

PURPOSE: A method for adjusting a skew of an objective lens in an optical pickup is provided to artificially increase relative light intensity of a first ring in an R(Radial) direction, so as to easily adjust the skew in the R direction. CONSTITUTION: Outgoing light of an objective lens is detected. Data are divided into predetermined areas by reflecting an R direction and a T(Tracking) direction for the detected information on the outgoing light of the objective lens. The data of the R direction are normalized, and relative distribution of first ring light intensity of the R direction is increased, thereby adjusting a skew. The normalization is performed with a maximum value in the area. And weight is applied to a component of the R direction for the data of detecting the outgoing light of the objective lens, to increase the first ring light intensity of the R direction.