| 摘要 |
FIELD: optical instruments. SUBSTANCE: device has two member. One of them has linear motion, another one has non-linear motion. First member is designed as negative meniscus which concave side is directed to image, double concave lens and positive meniscus which convex side is directed to object. Second member is designed as double convex lens, combined lens which consists of positive meniscus which convex side is directed to object and negative meniscus which concave side is directed to image, double concave lens and double convex lens. EFFECT: increased functional capabilities. |
