知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN1841524A 全息记录和再现装置 失效 - 权利终止

全息记录和再现装置
摘要：
本发明公开了一种包括可动电流反射镜、反射镜控制器和再现单元的全息记录和再现装置。电流反射镜将参考光束导向全息记录介质并改变参考光束的入射角。反射镜控制器使电流反射镜移动以将入射角调整到用于全息记录的预定角度。在再现所记录信息时，反射镜控制器使电流反射镜移动以使入射角在包括该预定角度的预定范围内连续改变。再现单元在入射角连续改变时接收来自光学检测器的检测信号。检测信号对应于来自全息记录介质的反射光束强度。当反射光束的强度超过预定水平或达到最大值时，再现单元根据检测信号再现所记录信息。
摘要（英）：

A hologram recording and reproducing apparatus includes a movable galvanomirror, a mirror controller and a reproduction unit. The galvanomirror guides a reference beam toward a hologram recording medium and changes the incident angle of the reference beam. The mirror controller causes the galvanomirror to move for adjusting the incident angle to a predetermined angle for hologram recording. In reproducing the recorded information, the mirror controller causes the galvanomirror to move, so that the incident angle continuously changes within a predetermined range including the predetermined angle. The reproduction unit receives a detection signal from an optical detector while the incident angle changes continuously. The detection signal corresponds to the intensity of a reflected beam from the hologram recording medium. The reproduction unit reproduces the recorded information, based on the detection signal, when the intensity of the reflected beam is over a predetermined level or reaches the maximum.

公开/授权文献
0/0