Patent ID: 6983002
Filing Date: 2006-01-03
Classification: G11B,H01L,H01S

Abstract:
1. A semiconductor laser device including an element mounting area, which is formed on a top surface of a supporting member having a plane area surrounded by a pair of right and left opposing ends and a pair of front and back opposing sides, for mounting a series of elements including: a semiconductor laser element, and a light detecting element which detects a laser beam emitted from the semiconductor laser element and reflected at an outside optical disc surface so as to be re-entered, wherein an optical path of the laser beam from the semiconductor laser element to the optical disc surface includes a vertical optical path advancing from the element mounting area of the supporting member in an approximately vertical upwards direction, arcuate curved outer surfaces are formed on the pair of right and left opposing ends of the supporting member, respectively, or on a pair of right and left protrusions formed on the supporting member, respectively, by which the supporting member is fitted into an installation hole, for a semiconductor laser device, having arcuate curved inner surfaces, and the arcuate curved outer surfaces are formed of arcs having the vertical optical path as central axes, and are so formed that lengths of curvature radiuses of right and left sides are different.