The optical system includes at least one lenselement, which outputs the light in a collimated beam on the oscillating reflector regardless of an orientation of the oscillating reflector.
该光学系统包括至少一个透镜元件，其与振荡反射器的定向无关地以准直光束的形式将光输出在振荡反射器上。
2
Experts say a 135mm lens would produce the best, most consistently accurate results. But even then there's an element of risk.
专家们称135毫米的镜头能照出效果最佳最稳定精准的照片，但即便如此也会有失真的风险。
3
We should not imagine that with the floating element, we get a high-speed lens with near macro capabilities.