公开(公告)号：US3703724A

公开(公告)日：1972-11-21

申请号：US3703724D

申请日：1971-07-22

Applicant: KMS IND INC

Inventor： THOMAS CARLTON E

IPC: G02B27/44 ,  G03B15/00 ,  G11B7/003 ,  G11B7/085 ,  G11C13/04 ,  H04N5/84 ,  G11B7/00 ,  G02B27/38

CPC classification number: H04N5/89 ,  G02B5/188 ,  G02B26/106 ,  G03B15/00 ,  G11B7/0031 ,  G11B7/085 ,  G11C13/042

Abstract: A zone plate scanner for wide bandwidth laser recorders utilizing a rotating disc having pairs of peripheral windows, each containing a zone plate, one set of windows in each pair being spaced circumferentially at a constant radius, and a second set being similarly spaced circumferentially but each having a different radius. The spacing changes the grating frequency for each pair and encodes each track on a moving film in a manner which eliminates interference in close spacing and reduces the criticality of readout equipment.

Abstract translation: 一种用于宽带宽激光记录器的区域扫描器，其利用具有成对的外围窗口的旋转盘，每个外围窗口包含区域板，每对中的一组窗口以恒定的半径周向间隔开，并且第二组沿周向相似地间隔开， 具有不同的半径。 间隔改变了每对的光栅频率，并以一种消除干涉紧密间隔的方式对移动胶片上的每个轨道进行编码，并降低了读出设备的临界性。