optical parallelism error 光学平行差
optical-axis parallelism 光轴平行性
optical axis parallelism 光轴平行度
multi-spectral optical axis parallelism 多轴一致性
parallelism of optical axes 光轴平行度
Parallelism between Optical-head and Spindle-motor 光头与主轴马达间的平行度
By study the measurement of parallelism between Optical head and Spindle motor at present, we find that there are expensive and inconvenient. So it needs to design a new convenient method.
对目前工业上测量光头与主轴马达间的平行度的方法进行研究后，发现其价格昂贵、操作不方便，因此有必要设计出一套方便可行的方法。
A new laser interferometer method is presented and used to quick measurement of parallelism of optical flat.
文章提出了一种新的检测方法即用数字波面干涉仪检测平晶的平行度。
Using the transparence CD, PSD can detect the displacement of laser spot between non-placing and placing the CD, and it can be used to calculate the parallelism between optical head and spindle motor.
考虑在主轴上放置透明盘片，用PSD测量位移子系统测出放置透明盘片前后的光斑移动距离，就可以计算出光头与主轴马达间的平行度。
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