Infrared lens focusing device and focusing method

The invention relates to an infrared lens focusing device comprising: a focusing execution unit, wherein the focusing execution unit comprises a driving motor and a driving mechanism; a central processing unit, wherein the central processing unit is electrically connected with the focusing execution unit to transmit a focusing instruction from the central processing unit to the focusing executionunit; and a focusing control unit, wherein the focusing control unit comprises a manual focusing device and an automatic focusing triggering device, and the manual focusing device and the automatic focusing triggering device are separately connected with the central processing unit. According to the infrared lens focusing device provided by the invention, the manual focusing mode and the automaticfocusing mode are integrated, so that the structure is simple, the size is small, and the focusing is flexible and light. 本发明涉及种红外镜头调焦装置，包括：调焦执行单元，所述调焦执行单元包括驱动电机和驱动机构；中央处理单元，所述中央处理单元与所述调焦执行单元电连接，以便将调焦指令从中央处理单元传输给调焦执行单元；调焦控制单元