长焦镜头
By using a hybrid design with six lenses, the problems of short focal length and large size of security lenses are solved, realizing a miniaturized and low-cost telephoto lens that can meet the long-distance monitoring needs of various security monitoring scenarios and improve imaging quality and stability.
CN120669396BActive Publication Date: 2026-07-17DONGGUAN YUTONG OPTICAL TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN YUTONG OPTICAL TECH
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
Smart Images
Figure CN120669396B_ABST
Abstract
本发明公开了一种长焦镜头，包括沿光轴从物面至像面依次排列的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，第一透镜具有正光焦度，第二透镜具有负光焦度，第三透镜具有正光焦度，第四透镜具有负光焦度，第五透镜具有光焦度，第六透镜具有光焦度，第一透镜、第三透镜和第四透镜为玻璃球面透镜，第二透镜和第五透镜为塑料非球面透镜。本发明实施例提供的长焦镜头，采用六枚透镜，通过合理的分配各个透镜的光焦度、面型以及材料，使得该镜头的光学总长满足TTL≤14.5mm，焦距EFL为11.5mm左右，最大像高达到7mm，实现了可兼顾总长短、体积小、成本低，且靶面大的长焦镜头。
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