FOCUSING DEVICE FOR BEAM PROJECTOR

摘要

PURPOSE: A focusing device for a beam projector is provided to protect external environment by sealing a casing and to reduce damage to the device by limiting the moving range of a barrel. CONSTITUTION: A focusing device(100) for a beam projector comprises a casing(101), a barren(102), a moving member, and an adjusting handle. A focusing module(103) for moving the barrel is installed in one side of the casing. The barrel has one or more lenses and is moved inside the casing in an optical axis direction of the lenses. The moving member is formed in one side of the barrel and is parallelly moved with the barrel. The adjusting handle is formed to be contiguous to the barrel and is rotatably coupled to the casing.