The commutation rule and the optimal collimation area are analyzed when Gauss light beam passes thin lens, and the design principles of the collimator are given.

阐述高精度激光准直系统的总体构成及特点，着重分析高斯激光束经过薄透镜的变换规律、最佳准直区域以及激光准直光学系统的设计思路。

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Even with its thin and light design, the X1 Carbon Touch packs a punch.

ENGADGET: Lenovo announces the ThinkPad X1 Carbon Touch, available now for $1,399 and up

It has an exceptionally thin and light design measuring 9.8 mm thin and weighing less than 600 grams (1.3 pounds), all in a 10.1-inch screen.

ENGADGET: Lenovo ThinkPad Tablet 2 official: Windows 8, NFC and a fingerprint reader, arrives in October

In addition, the IdeaCentre Q100 and Q110 nettops continue to push the envelope on thin and light design as the world's thinnest nettops1 while extending the entertainment experience with support for HD video on the Q110.

ENGADGET: Lenovo debuts IdeaCentre D400 home server, 'world's thinnest' Q100 and Q110 nettops