Ø2" Rotating Adjustable-Length Lens Tube
Features | Item # | Travel | Optic Accommodated | Rotates |
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| SM2NR1 | 1.16" (29 mm) | Ø1" | No | | SM2V10 | 0.81" (20.7 mm) | Ø2" | Yes |
- Precise Positioning of Optics within SM2 Lens Tube Systems
- Up to 1.16" (29 mm) of Travel Along the Optical Axis
- Internally and Externally SM2 (2.035" -40) Threaded
- Rotating and Non-Rotating Designs Available
Adjustable length lens tubes allow for the adjustment of an optic's position along the optical axis within a lens tube system. The SM2NR1 provides 1.16" (29 mm) of non-rotating adjustment at 17 mm per revolution for a Ø1" optic; it can be mounted between two fixed lens tubes. The SM2V10 is designed to house a Ø2" optic; the rotating design offers 0.81" (20.7 mm) of travel. | Alternatives | Ø1/2", Ø1", and Ø3" Adjustable Length Lens Tubes | Ø1" Non-Rotating Adjustable Focus Lens Tube |
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SM Series Threading SpecificationsThorlabs' lens tubes utilize a series of non-standard threadings. Threading specifications are given below for our SM threadings utilized in our lens tube and cage system components so that you can machine mating components to suit your application. For threading specifications other than what is listed here, please contact Tech Support. | SM05 Threading: Ø1/2" Lens Tubes, 16 mm Cage Systems |
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| External Thread, 0.535"-40.0, UNS-2A | Internal Thread, 0.535"-40.0, UNS-2B | | Max Major Diameter | 0.5340" | Min Major Diameter | 0.5350" | | Min Major Diameter | 0.5289" | Min Pitch Diameter | 0.5188" | | Max Pitch Diameter | 0.5178" | Max Pitch Diameter | 0.5230" | | Min Pitch Diameter | 0.5146" | Min Minor Diameter (and 83.3% of thread) | 0.508" | | Max Minor Diameter | 0.5069" | Max Minor Diameter (and 64.9% of thread) | 0.514" |
| SM1 Threading: Ø1" Lens Tubes, 30 mm Cage Systems |
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| External Thread, 1.035"-40.0, UNS-2A | Internal Thread, 1.035"-40.0, UNS-2B | | Max Major Diameter | 1.0339" | Min Major Diameter | 1.0350" | | Min Major Diameter | 1.0288" | Min Pitch Diameter | 1.0188" | | Max Pitch Diameter | 1.0177" | Max Pitch Diameter | 1.0234" | | Min Pitch Diameter | 1.0142" | Min Minor Diameter (and 83.3% of thread) | 1.008" | | Max Minor Diameter | 1.0068" | Max Minor Diameter (and 64.9% of thread) | 1.014" |
| SM30 Threading: Ø30 mm Lens Tubes |
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| External Thread, M30.5x0.5 | Internal Thread, M30.5x0.5 | | Max Major Diameter | 30.480 mm | Min Major Diameter | 30.500 mm | | Min Major Diameter | 30.371 mm | Min Pitch Diameter | 30.175 mm | | Max Pitch Diameter | 30.155 mm | Max Pitch Diameter | 30.302 mm | | Min Pitch Diameter | 30.059 mm | Min Minor Diameter (and 83.3% of thread) | 29.959 mm | | Max Minor Diameter | 29.938 mm | Max Minor Diameter (and 64.9% of thread) | 30.094 mm |
| SM2 Threading: Ø2" Lens Tubes, 60 mm Cage Systems |
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| External Thread, 2.035"-40.0, UNS-2A | Internal Thread, 2.035"-40.0, UNS-2B | | Max Major Diameter | 2.0338" | Min Major Diameter | 2.0350" | | Min Major Diameter | 2.0287" | Min Pitch Diameter | 2.0188" | | Max Pitch Diameter | 2.0176" | Max Pitch Diameter | 2.0239" | | Min Pitch Diameter | 2.0137" | Min Minor Diameter (and 83.3% of thread) | 2.008" | | Max Minor Diameter | 2.0067" | Max Minor Diameter (and 64.9% of thread) | 2.014" |
| SM3 Threading: Ø3" Lens Tubes |
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| External Thread, 3.035"-40.0, UNS-2A | Internal Thread, 3.035"-40.0, UNS-2B | | Max Major Diameter | 3.0337" | Min Major Diameter | 3.0350" | | Min Major Diameter | 3.0286" | Min Pitch Diameter | 3.0188" | | Max Pitch Diameter | 3.0175" | Max Pitch Diameter | 3.0242" | | Min Pitch Diameter | 3.0133" | Min Minor Diameter (and 83.3% of thread) | 3.008" | | Max Minor Diameter | 3.0066" | Max Minor Diameter (and 64.9% of thread) | 3.014" |
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Adjustable Ø2" Lens Tubes
