DescriptionProduct DescriptionSM2 (2.035″-40) threaded bore for mounting Ø2 inch (Ø50.8 mm) optical elements.Dual-end internal and external threads, stackable design.Stackable architecture for building multi-element optical systems.Compatible with our 60 mm cage assembly system.Can be used as a light-shielding component for lens tubes to block light paths and provide opaque light isolation.These Ø2 inch stackable lens tubes allow quick and simple construction of compact optical assemblies. Featuring a stackable design, they directly engage all SM2 (2.035″-40) threaded components, supporting flexible assembly of complex optomechanical setups. Ø2 Inch Lens Tube Thread TypeSM2 (2.035”-40) thread, with 3 mm protruding threadOuter DiameterØ55.9 mmCompatibilityFits Ø50.8 mm optical elementsMaterial7075 Aluminum AlloyTechnical Description These lens tubes are ideal for building compact optical assemblies. The Ø2 inch lens tubes accommodate one or more optical elements (as shown in the beam expander diagram). Optical elements are separated and fixed with retaining rings positioned at the desired depth inside the tube. (One retaining ring is included; additional rings are available for separate purchase.)The lens tubes feature SM2 (2.035”-40) external threads. These Ø2 inch stackable lens tubes enable fast and simple construction of compact optical assemblies. Their stackable design allows direct connection to all SM2 (2.035″-40) threaded components, facilitating flexible assembly of complex optomechanical systems.Compatible with our 60 mm cage assembly system. In cage systems, they can serve as light-shielding elements for lens tubes to block light paths and provide opaque light isolation.Multiple models are available.AssemblyApplication ExamplesEngineering DrawingsCSA2 Engineering Drawing
