摘要
本文论证了变焦镜的变焦原理,介绍了变焦镜的发展简史。
In this paper, the principle of variable focal distance of zoom lens is proved, the developing brief history and prospects of zoom lens are introduced.
出处
《阜阳师范学院学报（自然科学版）》
1989年第1期72-83,共12页
Journal of Fuyang Normal University(Natural Science)
