Infrared lens with detachable sealing structure

• Main Authors: WU ZHAOBIN, RUAN SHIJUAN, CHEN LINA, XIE ZHICHENG
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The utility model relates to an infrared lens with a detachable sealing structure. The infrared lens comprises a main lens cone, a front lens seat and a focusing lens seat. A positive meniscus lens Ais installed in the front lens seat, a negative meniscus lens B is installed in the focusing lens seat, and a positive meniscus lens C is installed at the rear end of the main lens barrel. The air interval between the positive meniscus lens A and the negative meniscus lens B is 35.42 mm to 37.42 mm, and the air interval between the negative meniscus lens B and the positive meniscus lens C is 16.68mm to 18.68 mm; a sealing ring located on the peripheral side of the front end of the positive meniscus lens A, an annular gasket for pressing the sealing ring and an A pressing ring for pressing theannular gasket are arranged in the front lens base. The infrared lens not only has good sealing performance, but also is convenient to disassemble, easy to repair subsequently and suitable for secondary operation; and the device has the advantages of compact structure, light weight, short overall length, convenience in carrying and the like. 本实用新型涉及一种具有可拆卸式密封结构的红外镜头，包括主镜筒、前镜座和调焦镜座；所述前镜座内安装有正月牙透镜A，所述调焦镜座内安装有负月牙透镜B，所述主镜筒后端安装有正月牙透镜C；所述正月牙透镜A与负月牙透镜B之间的空气间隔为35.42-37.42mm，所述负月牙透镜B与正月牙透镜C之间的空气间隔为16.68-18.68mm；前镜座内设置有位于正月牙透镜A前端周侧的密封圈、压紧密封圈的环形垫片以及压紧环形垫片的A片压圈。该红外镜头不仅具有良好的密封能好，而且拆卸方便，易于后续返修，适合二次作业；并具有结构紧凑、重量轻、整体长度短、携带方便等优点。