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Adjustable Ø2" Lens Tubes

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Ø2" Rotating Adjustable-Length Lens Tube




  • Rotating and Non-Rotating Adjustment
  • Mount Ø1" or Ø2" Optics
  • 1.16" (29 mm) or 0.81" (20.7 mm) Travel Range
  • SM2 (2.035" -40) Lens Tube Compatible

 

Features

  • 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.

 

Item #TravelOptic AccommodatedRotates
SM2NR1 1.16" (29 mm) Ø1" No
SM2V10 0.81" (20.7 mm) Ø2" Yes

 

Non-Rotating Adjustable Lens Tube

  • Precise Positioning of Optics within Lens Tube Systems without Rotation
  • 1.16" (29 mm) of Non-Rotating Adjustment at 17 mm Per Revolution
  • Mounts Ø1" Optics with Included SM1RR Retaining Ring
  • Mounts Between Two Fixed SM2 Lens Tubes

Thorlabs' SM2NR1 provides 1.16" (29 mm) of non-rotating adjustment for Ø1" optics in a lens tube system. The SM2NR1 is SM2-threaded (2.035"-40) and can be mounted between two fixed lens tubes. It contains an internal SM1 Threaded cell where optics are installed using the included SM1RR retaining ring. A double helical mechanism moves the optic back and forth while restricting any rotational movement.

 

Rotating Adjustable Length Lens Tube

  • Precise Positioning of Optics within Lens Tube Systems
  • 0.81" of Rotating Adjustment Along the Optical Axis
  • Internally and Externally SM2 Threaded
  • Mounts Ø2" Optics with included SM2RR Retaining Ring
This SM2-threaded (2.035"-40) adjustable-length lens tube provides 0.81" of adjustment for Ø2" optics in a lens tube system. Optics are mounted using an included SM2RR retaining ring, and the adjustable-length lens tube is threaded into a compatible lens tube or mount to adjust the position of the optic. The included locking ring can be used to fix the position of the optic. Although a lens tube can be attached to the front of the adjustable-length lens tubes, it should only be done after the position of the optic has been fixed since this lens tube will need to be free to rotate and translate if the position of the optic is changed.

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