| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive optical pickup device which exactly detects an amount of output light of a laser beam when performing at least either of reproducing and recording of an information storage medium. <P>SOLUTION: The light failing to pass through a wavelength selection film 6 of an optical separation element 7 out of the light from a first light source 1 is reflected by a first reflection film 10 toward an optical monitor 5. The light failing to pass through the wavelength selection film 6 of the optical separation element 7 out of the light from a second light source 2 is reflected by a second reflection film 11 toward the optical monitor 5. <P>COPYRIGHT: (C)2008,JPO&INPIT |
