| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical scanner capable of saving a cost, and improving scanning accuracy. <P>SOLUTION: An optical scanner includes four light source, a pre-deflector optical system A, a pre-deflector optical system B, a polygon mirror, a scanning optical system A, and a scanning optical system B. Each scanning optical system has one scanning lens and a plurality of folding mirrors. The scanning lens is shared by two stations, and a resin molding article having two optical surfaces respectively corresponding to the stations on an injection surface side. The two optical surfaces are aligned in a sub-scanning corresponding direction through a flat surface. The scanning lens is molded while suppressing nonuniform contraction in a mold and deformation when releasing from the mold, and has the excellent shape accuracy of each optical surface while being the resin molding article. <P>COPYRIGHT: (C)2013,JPO&INPIT |
