| 摘要 |
PURPOSE: To compensate laser inducing noise in the read/write head of an optical information storing system by detecting a front surface radiation. CONSTITUTION: In the optical storing system, a signal polarizing component for a mutual operation with an optical storing medium 5 is selected so that a radial component being not for a signal from a laser unit 11 separated from an optical path is made incident to a first detector 21. An output electric signal from the first detector 21 is coupled with the output electric signal from the second detector 16 where the radial component after the mutual operation with the storing medium is added. The two signals are coupled in a form to reduce noise from a lens, which is superimposed on the signal from the second detector 16. In the read/write head, the beam not for the signal becomes a radiation polarized by a beam splitter 13. |
