This article systematically organizes the commonly used optical filter thread types, dimension standards, and mounting specifications in laboratories, cameras, and industrial scenarios, providing practical references for technicians. Thorlabs offers a wide range of manual and motorized optical filter mounts for Ø1/2", Ø1", and rectangular filters. MidOpt's innovative filter designs ensure flawless control, dependable results and unmatched image quality. Thread Specification indicates the diameter and pitch of the thread.