SM2 Lens Tube SM2L12-A

JCOPTIX lens tubes are ideal for compact optical subsystems. SM2 tubes hold 1 or more Ø50.8 mm optics. SM2 tubes have 3 versions: internally threaded through-bores, internal/external threads, and external threads at both ends. Connecting tubes extends length for rapid compact-system construction. Rings separate/secure optics and are positioned using our MBT-SM2 spanners. Besides SM2, JCOPTIX offers SM05 and SM1 tubes, adapters, rings, and spanners. SM2 tubes, internal/external threads: JCOPTIX SM2 A-series tubes have SM2 external threads at one end and SM2 internal threads at the other, holding Ø50.8 mm optics. Combine tubes to extend length. 1 supplied SM2RR ring secures optics. SM2 tubes, internal threads: JCOPTIX SM2 B-series tubes have SM2 threaded through-bores without shoulders or external threads. Mount Ø50.8 mm optics from either end and combine tubes to extend length. 2 supplied SM2RR rings separate/secure optics. SM2 tubes, external threads: JCOPTIX SM2 C-series tubes have SM2 external threads at both ends, stacking internally/externally threaded and internally threaded tubes or extending length. SM2 externally threaded adapters: JCOPTIX SM2 adapters connect SM2 internally threaded components. Full-length SM2 external threads optimize position/angle. Each includes 2 knurled SM2NT external rings for hand tightening; multiple rings lock tubes independently. SM2 externally threaded retaining rings for SM2 internal threads: JCOPTIX SM2 rings use 6061-T6 aluminum or 303 stainless steel with black anodizing or sandblasting/passivation. Large apertures hold Ø50.8 mm optics. Two slots accept MBT-SM2 spanners. SM2 external rings for SM2 external threads: JCOPTIX SM2 rings work with SM2 tubes/adapters; slim 2.8 mm designs suit other SM2 ring applications.

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