透镜单元，镜筒，光学装置，图像读取单元，扫描仪和图像形成设备。
Lena unit, lens, optical device, image reading unit, scanner and image forming device.
透镜驱动装置，透镜筒，光学设备和组装透镜驱动装置的方法。
Lens driving device, lens barrel, optical apparatus, and method for assembling lens driving device.
本文介绍了一种用显微镜筒与透镜构成的光学系统来实现光源与光纤耦合的方法。
With an optical system composed by dressing-case of microscope and lens, this method provide lots of merits such as durability, convenience and high coupling efficiency.
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