Abstract: An objective lens of an optical pickup device for both CD and DVD, in which a short-wave pass (SWP) filter is inserted in the objective lens, is capable of allowing the optical pickup device to have a light-weight, slim, simple, and miniaturized structure. The objective lens is divided into two lens portions with respect to a direction transverse to a beam transmitting path and provided with a short-wave pass (SWP) filter. The lens portions have planarized divisional surfaces facing each other, respectively. The objective lens reduces the space occupied by the SWP filter. Accordingly, the objective lens of the present invention alleviates a restriction in the design of an optical system caused thereby and an increased margin is secured.

Abstract: Disclosed is a short-wave pass filter-inserted objective lens of an optical pickup device for both CD and DVD, in which a short-wave pass (SWP) filter is inserted in the objective lens, thereby being capable of allowing the optical pickup device to have a light-weight, slim, simple, and miniaturized structure. The objective lens is characterized in that it is divided into two lens portions in a transverse direction to a beam transmitting path and provided with a short-wave pass (SWP) filter, the lens portions having planarized divisional surfaces facing each other, respectively. The objective lens reduces the space occupied by the SWP filter. Accordingly, the objective lens of the present invention alleviates a restriction in the design of an optical system caused thereby. Also, there is an advantage in that an increased margin is secured.