In the second, an optical imaging system is designed and made.

其次，设计和实现了一种光学成像系统。

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The final step, an optical automatic alignment system is completed by using the optical imaging system.

最后，利用上述光学成像技术，实现了一种光学自动对准系统。

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The third step, a new method of high-precision calibration with grating grooves is presented for the optical imaging system.

再者，提出了一种新的使用光栅刻线进行成像系统精度标定的方法。

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CDM's imaging system, it passes first through conventional optical elements, and then through a lens moulded into a shape of a cubic-like function (ie, with a surface which, instead of being spherical, is relatively flat in the centre but has scalloped edges).

ECONOMIST: MONITOR