FIG. 6 shows an optical system that includes a series of collectionoptics and optical concentrators.
图6显示了包括一系列收集光学器件与光学集中器的光学系统。
2
This compact, easy-to-carry lens is ideal for photo enthusiasts looking to add a bright, general purpose zoom to their collection of full-frame optics.
这个小巧，易于携带摄影镜头是寻求增加明亮，通用放大他们的全画幅光学收集爱好者的理想选择。
3
See more clearly with 2 x the light collection than regular VGA optics.