| 摘要 |
PURPOSE:To enable efficient optical reproduction by repeating the reflection at approximately the same place of a transfer film magnetization film to transfer the magnetization of a medium, thereby making the reproduction. CONSTITUTION:Laser light made into parallel luminous fluxes by a lens 7 is reflected at the point A of a paraboloid 5 and is focused to a micro-region 3 of the transfer film 3. The reflected light thereof is reflected at the point A' of the paraboloid 4 so as to enter the point B of the paraboloid B. The light is taken as the parallel luminous fluxes out of a hole 12 by repeating the above-mentioned reflection. The micro-region of the inverted magnetization is, therefore, repeatedly reflected and the efficient optical reproduction is executed. |
