一对不反光镜片大约要多少钱？
帽舌为盒式结构，内有护目镜，盒盖即反光镜片，靠杠杆和帽舌连接。
The bongrace is box structure and has protective goggles inside. The lid is the reflecting mirror, which is joined by a lever and the bongrace.
本发明采用了设置在光学取景器影像屏幕和目镜之间可以开闭的取景器专用的全反射反光镜片。
The utility model adopts a reflector which is specially arranged between the screen and the ocular of the optical finder. This reflector can realize the total reflection and open or close.
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