公开(公告)号：US3721965A

公开(公告)日：1973-03-20

申请号：US3721965D

申请日：1971-11-22

Applicant: HONEYWELL INF SYSTEMS

Inventor： MORGAN VOYCE A

IPC: G02F1/29 ,  G11C13/06 ,  G11C11/14

CPC classification number: G02F1/29 ,  G11C13/06

Abstract: A modulated laser beam having a uniplanar, two direction deflection is directed to a mirror tunnel. The mirror tunnel divides the single laser beam into multiple laser beams. The multiple laser beams are polarized and a beam selector permits only one raster scan from the multiple images of the mirror tunnel to reach the memory film target. The Curie-point recording method forms the information onto the film. For reading information from the target, the laser beam is deflected, multiplied and selected as for writing. Reflected light from a spot on the target exhibits a clockwise or counter-clockwise change in the polarization angle depending on the binary state of the magnetic field. The Kerr-effect polarization change is passed through a polarization filter which permits one state of the magnetic field to be passed and blocks the second state of the magnetic field. The light passing through the polarizing filter is collected by a lens and detected by a light detector such as a photocell. The output of the light detector is directed to a utilization device for use therein.

Abstract translation: 具有单平面，双向偏转的调制激光束被引导到反射镜通道。 镜面隧道将单个激光束分成多个激光束。 多个激光束是偏振的，并且光束选择器仅允许来自反射镜隧道的多个图像的一次光栅扫描到达记忆膜靶。 居里点记录方法将信息形成电影。 为了从目标读取信息，激光束被偏转，相乘并选择为写入。 来自目标上的点的反射光根据磁场的二进制状态显示偏振角的顺时针或逆时针变化。 克尔效应极化变化通过极化滤波器，其允许磁场的一个状态通过并阻止磁场的第二状态。 通过偏振滤光器的光由透镜收集，并由诸如光电管的光检测器检测。 光检测器的输出被引导到用于其中的利用装置。