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SM Series Angled Optic Mounts

  • 10° Angle Reduces Etalon Effects on Plano-Plano Optics
  • Eliminate Back Reflections
  • Accepts Optics up to 5 mm Thick






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  • 10° Angle Reduces Etalon Effects in Plano-Plano Optics
  • Allows for Elimination of Back Reflections
  • Accepts Optics up to 5 mm Thick
  • SM1 (1.035"-40) Threaded
  • SM1RR Retaining Ring Included
  • SM1NT Locking Nut Included

The SM1L03T Angled Optic Mount is designed to minimize back reflections when a Ø1" optical window is placed in a setup. When seated, the mount holds the optic at a 10° angle. The SM threading on the rear side allows the mount to be easily coupled to a Ø1" lens tube. Using our SM1 thread adapters, the mount can also be added to a Ø1/2", Ø2", or Ø3" lens tube setup. This mount accommodates optics up to 5 mm thick, making it compatible with our narrowband laser windows.

Since the beam exiting the angled window is displaced as a function of the thickness of the window and its material, Thorlabs recommends using the angled optic mount together with an X-Y Translating Mount such as the LM1XY to offset this displacement.

Thorlabs' Stackable Lens Tubes provide an easy and fast solution for assembly of an optical system with a single optical axis. Using lens tubes one can easily assemble several optical components on a common optical axis without the need for X-Y alignment of each component to the common axis. Thorlabs offers Ø1/2”, Ø1”, Ø2” and Ø3” lens tubes, for use with different optics sizes, as well as adapters to convert between the four different sizes.

Lens Tubes Application Example

Thorlabs also offers many of our optical components in pre-mounted 1” lens tubes as well as specially developed components and mounts, all of which are pre-aligned to the optical axis, including:

Thorlabs has also added alignment tools for lens tubes for working with IR optics, such as infrared alignment disks and alignment targets. Additionally, with the use of retaining rings, any standard optical component can be easily mounted into the lens tubes.

For more complex optical systems Thorlabs has developed sets of post mounting rings, and mounting brackets and construction cubes to enable building complex, rugged systems.

Thorlabs lens tubes can also easily interface with our cage system components such as the cage plates, kinematic turning mirror mounts, pre-mounted beamsplitter cubes and pre-mounted turning mirrors.

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Part NumberProduct Description
SM1L03T Support Documentation SM1L03T:SM1 Series 10° Angled Optic Mount

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Posted Comments:
Posted Date:2011-01-05 19:56:57.0
Response from Tor at Thorlabs to Boris: Thank you for your request. I will contact you directly to determine whether we can provide a custom part for your application.
Posted Date:2011-01-04 14:45:27.0
Hi, I would like to have 1/2" version of SM series angled optics mount. Also, 10deg seems too big for most applications, 3-5 deg is enough. Regards, Boris Tadjikov, engineer Pranalytica, Inc.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
SM1L03T Support Documentation
SM1L03TSM1 Series 10° Angled Optic Mount
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