1. The prime products are spherical lens, Windows, prisms, achromatic lens, cylindrical mirror, laser optical components, infrared optical components, various crystals and some other relative items.
主要产品有球面镜、窗口、棱镜、胶合镜、柱面镜、激光光学元件、红外光学元件、各种晶体。

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2. The achromatic principle and its design method of two-grating lens system are presented.
介绍双光栅透镜系统的消色差原理和设计方法。

来自互联网

3. The achromatic principle and its design method of two-grating lens system are presented.
介绍双光栅透镜系统的消色差原理和设计方法。

来自互联网