专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4621351A Beam alignment system 失效
标题翻译：光束对准系统
公开(公告)号：US4621351A
公开(公告)日：1986-11-04
申请号：US628684
申请日：1984-07-06
申请人： James W. Baer , Henry H. Hoshiko , Robert P. McIntosh , Charles M. Reilly , Paul M. Romano , James W. Hargarten
发明人： James W. Baer , Henry H. Hoshiko , Robert P. McIntosh , Charles M. Reilly , Paul M. Romano , James W. Hargarten
IPC分类号： G11B7/085 , G11B7/00
CPC分类号： G11B7/08547
摘要： A beam alignment system and method for aligning a first radiation beam with respect to a second radiation beam as these beams share a desired optical path. Beam steering means, such as a galvonometer controlled mirror, steer the alignment of the first beam as it enters the shared optical path. Detection means are employed to sense the relative alignment between the first and second beams as they travel through the shared path. This sensed alignment is compared to a desired alignment, and a position error signal is generated to indicate the error therebetween. The position error signal, in turn, is used to steer the galvonometer controlled mirror in order to force the beam alignment error between the two beams to zero. In a preferred embodiment, the beam alignment system is used in an optical disk storage system to precisely position a write beam a desired distance from a read beam; thereby allowing a data track written with the write beam on a storage disk to be spaced a desired distance (the track pitch) from a previously written track that is being followed by the read beam.
摘要翻译：一种用于使第一辐射束相对于第二辐射束对准的光束对准系统和方法，因为这些光束共享期望的光路。光束转向装置，例如电流计控制反射镜，当第一光束进入共享光路时，引导第一光束的对准。当第一和第二光束穿过共享路径时，采用检测装置来感测第一和第二光束之间的相对对准。将该检测到的对准与期望的对准进行比较，并且产生位置误差信号以指示它们之间的误差。反过来，位置误差信号用于引导电流计控制镜，以迫使两束光束之间的光束对准误差为零。在优选实施例中，光束对准系统用于光盘存储系统中以将写入光束精确地定位到读取光束所需的距离; 从而允许用存储盘上的写入光束写入的数据轨迹与预先写入的跟踪读取光束的轨迹间隔一个期望的距离（轨道间距）。

IPRDB

热门服务

关于我们

友情链接

联系方式