一款小型化可见光两档7.5^(×)变焦系统的设计  

Design of miniaturized two-steps 7.5^(×)zoom system in visible band

作　　者：陈悦 谢洪波[1] 杨童[1] 潘俊旭 杨磊[1] CHEN Yue;XIE Hongbo;YANG Tong;PAN Junxu;YANG Lei(Key Laboratory of Opto-Electronics Information Technology,Ministry of Education,College of Precision Instrument and Opto-Electronics Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学精密仪器与光电子工程学院,光电信息技术教育部重点实验室,天津300072

出　　处：《应用光学》2021年第1期30-35,共6页Journal of Applied Optics

基　　金：天津大学自主创新基金。

摘　　要：许多应用都期望以大视场搜索定位目标,以小视场瞄准跟踪目标。提出并设计一款小型化两档7.5^(×)变焦距成像系统,其工作于486 nm~656 nm的可见光波段,短焦视场为±15°,长焦视场为±2°,两视场下F数均为2.8,系统总长仅为60 mm。系统由玻璃镜片及注塑镜片混合组成,包含一个前固定组和一个可动组,通过可动组在2个变焦位置间的切换完成广角搜索功能和长焦凝视功能的转换,具有小型化、轻量化、低成本的优势。Many applications expect to search for targets with a large field of view(FOV),and identify the targets in a relative small FOV.A miniaturized two-step 7.5^(×)zoom system was proposed and designed,which worked in the visible band of 486 nm~656 nm with a wide-angle FOV of±15°,telephoto FOV of±2°,Fnumber in both FOV of 2.8,and overall length of 60 mm.The system consisted of glass lenses and plasticinjection lenses,which contained one front fixed group and one movable group.The conversion of wide-angle search function and long-focus gaze function was completed by switching the movable group between two zoom positions,which had the advantages of miniaturization,lightweight and low cost.

关 键 词：两档变焦 光学设计 注塑非球面 小型化 轻量化 

分 类 号：TN202[电子电信—物理电子学]