Thorlabs Inc.
Visit the Adjustable SM1 Lens Tubes page for pricing and availability information

Adjustable SM1 Lens Tubes

  • Translate Ø1/2" Optics, Ø1" Optics, or Ø1" Lens Tubes Along the Optical Axis
  • Rotating or Non-Rotating Adjustment
  • Compatible with SM-Threaded Components
  • Create Variable-Length Lens Tube Assemblies

SM1V15

SM1V10

SM1ZM

High-Precision Zoom Housing

SM1NR1

Non-Rotating Zoom Housing

SM1P

Adjustable Collimation Adapter

Adjustable Ø1" Lens Tubes

SM05V05

Hide Overview

OVERVIEW

Features

  • Allow Precise Positioning of an Optic within SM1 Lens Tube Systems
  • Compatible with SM-Threaded Components
  • Mount SM1-Threaded Lens Tubes, Ø1" (25.4 mm) Optics, Ø25 mm Optics, or Ø1/2" (12.7 mm) Optics

Adjustable lens tubes allow for the adjustment of an optic's position within an SM lens tube system. The SM1V05, SM1V10, SM1V15, and SM1P provide rotating adjustment, while the SM1ZM, SM1NR1, and SM1NR05 zoom housings use helical drive mechanisms to provide linear travel of the internal cell without rotation. Unlike the other items on this page, the SM1V05, SM1V10, and SM1V15 must be combined with another SM1-threaded lens tube in order to provide adjustment. For collimating light from our mounted LEDs using an aspheric condenser lens, the SM1P Adjustable Collimation Adapter provides 0.43" (11 mm) of rotating travel for Ø1" or Ø25 mm optics. Finally, the SM1ZM and SM1NR1 can be combined with a standard SM1 lens tube to construct a non-rotating telescoping lens tube system.


Hide Application

APPLICATION

# Product Description Qty. Photo
(Click to Enlarge)
1 DFM1 - Kinematic
Dichroic Filter Cube
1 Dichroic Cage Cube
2 Microscopy Filters 1 Set Microscopy Filters
3 SM1B3 - Lens Tube Bellows 1 Bellows
4 SM1ZM - Non-Rotating
SM1 Zoom Housing
1 Zoom Housing
5 Focusing Lens Inside
Zoom Housing
1 Focusing Lens
6 ST1XY-D - XY Translator
with Differential Drives
1 XY Translator
7 Precision Pinhole Between
XY Translator and Photodetector
1 Precision Pinhole
8 Photodetector
SM1-Compatible Photodetector
1 Photodetector

SM1ZM Zoom Housing - Optic Alignment in a Confocal Microscope

Thorlabs' SM1ZM High-Precision Zoom Housing (denoted by 4 in the image below) is useful when precise Z-positioning of optics is necessary. In the following example of a partial confocal microscope, a light-tight connection can be created between a DFM1 Dichroic Filter Cube (1) containing a Microscopy Filter Set (2), and an APD120A2 Photodetector (8). A lens (5) located inside the SM1ZM Zoom Housing (4) focuses the beam onto a precision pinhole (7) located just before the avalanche photodetector's sensor. The SM1ZM zoom housing is mounted directly onto the ST1XY-D XY Translation Mount with Differential Adjusters (6), creating a compact XYZ mount. SM1 Lens Tubes and the SM1B3 Lens Tube Bellows (3) allow for a light-tight connection without inhibiting the free movement of the XYZ mount.

Components used in the configuration pictured below are listed in the table to the right. These parts, along with SM1 Lens Tubes and 1" Post Assemblies, are sold separately.

Application

Hide Threading Specs

THREADING SPECS

Thorlabs' Threading Specifications

Thorlabs' 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. We also offer products with C-Mount and RMS threadings, and the specifications for these threadings are also given below. Please note that other manufacturers may have different tolerances for these threads. For other thread specifications that are not listed here, please contact Tech Support.

SM05 Threading: Ø1/2" Lens Tubes, 16 mm Cage Systems
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"
RMS Threading: Objective, Scan, and Tube Lenses
External Thread, 0.800"-36.0, UNS-2A Internal Thread, 0.800"-36.0, UNS-2B
Max Major Diameter 0.7989" Min Major Diameter 0.8000"
Min Major Diameter 0.7934" Min Pitch Diameter 0.7820"
Max Pitch Diameter 0.7809" Max Pitch Diameter 0.7866"
Min Pitch Diameter 0.7774" Min Minor Diameter (and 83.3% of thread) 0.770"
Max Minor Diameter 0.7688" Max Minor Diameter (and 64.9% of thread) 0.777"
C-Mount Threading: Machine Vision LensesCCD/CMOS Cameras
External Thread, 1.000"-32.0, UN-2A Internal Thread, 1.000"-32.0, UN-2B
Max Major Diameter 0.9989" Min Major Diameter 1.0000"
Min Major Diameter 0.9929" Min Pitch Diameter 0.9797"
Max Pitch Diameter 0.9786" Max Pitch Diameter 0.9846"
Min Pitch Diameter 0.9748" Min Minor Diameter (and 83.3% of thread) 0.966"
Max Minor Diameter 0.9651" Max Minor Diameter (and 64.9% of thread) 0.974"
SM1 Threading: Ø1" Lens Tubes, 30 mm Cage Systems
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
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
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
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"

Hide Ø1" Lens Tubes with Rotating Optic Adjustment

Ø1" Lens Tubes with Rotating Optic Adjustment


Adjustable Lens Tube Usage
  • Long Externally Threaded Section for Adjustable Positioning of Mounted Optics
  • Adjustment Range up to 1.31" (38.1 mm)
  • Maximum Optic Thickness 0.42" (10.7 mm)

These SM1-threaded (1.035"-40) adjustable lens tubes have an extra-long externally threaded section, allowing Ø1" optics to be precisely positioned along the optical axis of a lens tube system. To operate, mount the optic in the internally threaded section using the included SM1RR retaining ring. Then thread the adjustable lens tube into a compatible SM1-threaded lens tube or lens mount until the optic is at the desired position. Use the included SM1NT locking ring to fix the position of the lens tube. See the video to the right for a demonstration.

These adjustable lens tubes are an ideal solution for fine tuning of the first and last lenses in a lens tube system. Although a lens tube can be attached to the front of the adjustable lens tube, it should only be done after the position has been fixed, since this lens tube will need to be free to rotate and translate if the position is changed. Like our standard lens tubes, these adjustable lens tubes are made of black anodized aluminum.

Item # External Thread Length (L) Maximum Adjustment Rangea
SM1V05 0.5" (12.7 mm) 0.31" (7.9 mm)
SM1V10 1.0" (25.4 mm) 0.81" (20.6 mm)
SM1V15 1.5" (38.1 mm) 1.31" (33.3 mm)
  • Including one SM1NT locking ring and 0.08" (2 mm) minimum thread depth for the attached lens tube or component.
Alternatives Ø1/2", Ø2", and Ø3" Adjustable Lens Tubes

Part Number
Description
Price
Availability
SM1V05
Ø1" Adjustable Lens Tube, 0.31" Travel Range
$29.60
Today
SM1V10
Ø1" Adjustable Lens Tube, 0.81" Travel Range
$32.60
Today
SM1V15
Ø1" Adjustable Lens Tube, 1.31" Travel Range
$35.00
Today

Hide Adjustable Collimation Adapter for Ø1" or Ø25 mm Optics

Adjustable Collimation Adapter for Ø1" or Ø25 mm Optics

LED Collimation Adapter
Click to Enlarge
[APPLIST]
The SM1P Installed on a M530L3 Mounted LED with ACL2520U-A Condenser Lens
  • Non-Telescoping, Rotating Translation of Ø1" or Ø25 mm Collimation Optic with 11 mm (0.43") of Travel
  • External SM1 Threading (1.035"-40) at Input and Internal SM2 Threading (2.035"-40) at Output
  • Use SM1A38 Thread Adapter for SM1 Thread Compatibility at Output Aperture
  • 6.0 mm (0.24") Thick Retaining Ring Ideal for Aspheric Lenses
  • Recommended for Collimating Mounted LEDs Using Condenser Lenses

This Adjustable Collimation Adapter provides 11 mm (0.43") of rotating translation for a Ø1" (Ø25 mm) optic with a clear aperture of Ø23.0 mm (Ø0.91"). As seen in the drawing to the right, the input is externally SM1 threaded (1.035"-40) for compatibility with SM1-threaded components or mounted LEDs. The output adapter is externally M34 x 0.5 threaded and internally SM2 threaded. An M34 x 0.5 external to SM1 (1.035"-40) thread adapter (Item # SM1A38) can be purchased separately to make the output compatible with SM1-threaded components.

The inner carriage can be translated along the Z-axis by turning the adjustment ring (engraved with the Item # in the photos to the left) and locked into position by turning the locking screw on the side of the adjustment ring with a 2 mm (5/64") hex key. Lines with a 2 mm spacing are engraved on the housing as a rough guide for how far the carriage has been translated. Each collimation adapter also includes an extra-thick SM1-threaded retaining ring that allows an aspheric condenser lens to be mounted with our SPW602 Spanner Wrench.

Inserting or Removing Optics
To insert or remove an optic in these collimation adapters, use the adjustment ring to translate the inner carriage to the output end of the housing. Remove the included retaining ring using the SPW602 spanner wrench. If there is a lens installed already, remove it from the carriage. Insert another Ø1" or Ø25 mm optic into the carriage, and use the retaining ring to secure it.


Part Number
Description
Price
Availability
SM1P
Adjustable Collimation Adapter for Ø1" or Ø25 mm Optic
$175.56
Today

Hide Zoom Housing for Ø1" Optics and SM1 Lens Tubes, 2" (50.8 mm) Travel

Zoom Housing for Ø1" Optics and SM1 Lens Tubes, 2" (50.8 mm) Travel

SM1NR1 Translation Scale
Click to Enlarge
Each Tick on the Engraved Scale Indicates 0.25 mm of Internal Translation
SM1NR1 Cage Plate Mount
Click to Enlarge
[APPLIST]
[APPLIST]
The SM1NR1 Features a Ø35 mm Boss for 30 mm Cage System Mounting using the CP03 Cage Plate.

SM1NR1 Zoom Housing Usage
SM1NR1 Telescoping Lens Tube
Click to Enlarge
A Standard SM1 Lens Tube can be Threaded to the Internal Translating Cell to Create a Telescoping Lens Tube Assembly
  • Non-Rotating Translation of SM1 Lens Tubes and Ø1" Optics up to 0.3" (7.6 mm) Thick
  • Fixed External and Translating Internal SM1 (1.035"-40) Mounting Threads
  • Create a Light-Tight Telescoping Lens Tube Assembly
  • 2" (50.8 mm) of Travel at 0.63" (16 mm) per Revolution

The SM1NR1 is an SM1-threaded, non-rotating zoom housing. It features an internal SM1-threaded (1.035"-40) translating cell for mounting Ø1" optics using the included SM1RR retaining ring, or for connecting SM1 lens tubes. A double-helical mechanism allows this cell to be translated along the optical axis without rotation (see video to the lower left). Each engraved tick mark on the rotating adjustment collar indicates 0.25 mm of linear travel of the inner cell (see photo to the far right). An 0.050" hex setscrew located by the Thorlabs engraving locks the movement, and tungsten disulfide dry film lubricant on the exposed internal surfaces ensures smooth translation.

The back of the housing includes an external SM1 thread for integration into lens tube systems. Additionally, the front of the housing includes a Ø1.38" (Ø35 mm) boss for 30 mm cage system integration using our CP03 cage plate (see photo above, to the immediate right).

Telescoping Lens Tube
A smooth Ø1.2" bore on one end of the housing allows standard SM1 lens tubes to be connected to the internal translating cell. This creates a light-tight adjustable-length lens tube assembly (see photo to the right).


Part Number
Description
Price
Availability
SM1NR1
SM1 Zoom Housing for Ø1" Optics, Non-Rotating, 2" (50.8 mm) Travel
$195.00
Today

Hide High-Precision Zoom Housing for Ø1" Optics and SM1 Lens Tubes, 0.16" (4 mm) Travel

High-Precision Zoom Housing for Ø1" Optics and SM1 Lens Tubes, 0.16" (4 mm) Travel

SM1ZM Application
Click to Enlarge
[APPLIST]
[APPLIST]
A Standard SM1 Lens Tube can be Threaded to the Internal Translating Cell to Create a Telescoping Lens Tube Assembly
  • Non-Rotating Translation of SM1 Lens Tubes or Ø1" Optics up to 0.42" (10.7 mm) Thick
  • 0.16" (4.1 mm) of Travel at 0.5 mm Per Revolution
  • Fixed External SM1 and Translating Internal SM1 Mounting Threads

The SM1ZM non-rotating zoom housing provides 0.16" (4.1 mm) of linear travel without rotating the optical element mounted in it. A fine helical mechanism moves the front barrel back and forth while restricting any rotational movement, preventing any rotation of the attached lens tubes or optics (see image to the right). This high-precision (0.5 mm per revolution) zoom housing provides the ability to accurately control the exact working distance of an optical element within a system prior to locking it into place.

To operate, mount a Ø1" optic in the zoom housing and secure it using the included SM1RR retaining ring. Then attach the SM1ZM to an internally threaded SM1 lens tube or mount. Once secure, the outer ring of the SM1ZM can be used to precisely position the optic. A standard SM1 lens tube can also be attached to the front of the SM1ZM to create a telescoping lens tube assembly (see image to the right). For a more involved application within a confocal microscope setup, please see the Application tab.


Part Number
Description
Price
Availability
SM1ZM
SM1 Zoom Housing for Ø1" Optics, Non-Rotating, 4.1 mm Travel
$159.10
Today

Hide Zoom Housing for Ø1/2" Optics, 0.7" (18 mm) Travel

Zoom Housing for Ø1/2" Optics, 0.7" (18 mm) Travel


SM1NR05 Zoom Housing Usage
  • Non-Rotating Translation of Ø1/2" Optics up to 0.25" (6.4 mm) Thick
  • 18 mm of Travel at 17 mm Per Revolution
  • Internal and External SM1 Threading for Attachment Between Two Fixed SM1 Lens Tubes

The SM1NR05 non-rotating zoom housing provides 18 mm of linear travel without rotating the optical element mounted in it. A double helical mechanism moves the interior SM05 barrel back and forth while restricting any rotational movement. This 17 mm per revolution zoom housing provides the ability to accurately control the exact working distance of an optical element within a system. To operate, mount a Ø1/2" optic in the zoom housing and secure it using the included SM05RR retaining ring. Then the SM1NR05 can be mounted on any SM1 threaded lens tube or mount. Once secure, the outer ring of the SM1NR05 can be used to precisely position the optic.

Unlike the other lens tubes and housing on this page, the SM1NR05 offers fixed SM1 threading on both ends, allowing it to be attached between two fixed Ø1" lens tubes while still retaining the ability to adjust the position of the optic (see the video to the right).


Part Number
Description
Price
Availability
SM1NR05
SM1 Zoom Housing for Ø1/2" Optics
$180.00
Today