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Fixed Lens Mounts


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This page features Thorlabs' numerous options for mounting lenses in fixed mounts. Traditional fixed optic mounts (LMR series) are available for 13 discrete optic diameters ranging from Ø1/2" to Ø4", feature internal threading, and come complete with one retaining ring for securing the optic in place. Alternatively, if your application could benefit from a mount that has both internal an external SM threads, choose a member of our LMRxxS series. In either case, the fixed mount features an 8-32 (M4) tapped hole for post mounting. For small optics (i.e., less than Ø10 mm), we offer stainless steel adapters that allow these optics to be mounted in either our SM05-threaded or SM18-threaded mounts. We also offer a line of small optic adapters with external SM1 threading, which can mount optics from Ø5 mm to Ø20 mm in SM1-threaded lens mounts.

Fixed Lens Mounts
Click to Enlarge

Fixed Lens Mounts Feature Internal Threads and a Retaining Lip (LMR Series, Left), Internal and External Threads (LMRS Series, Center), or Internal Threads (SMR Series, Right)
LMR2 shown with its retaining ring removed
LMR2 Ø2" Mount
Fixed Lens Mounts
Click to Enlarge

LMRA Series Adapters for Mounting Small Optics

Fixed Optic Mounts with Internal Threads (LMR Series)

  • Sizes to Accommodate Ø1/2", Ø15 mm, Ø18 mm, Ø20 mm, Ø1", Ø30 mm, Ø1.5", Ø45 mm, Ø2", Ø75 mm, Ø3", Ø100 mm, or Ø4" Optics
  • Internally Threaded
  • 8-32 (M4) Tapped Hole Allows for Mounting to Ø1/2" Posts
  • Secure Optic Between the Back Lip and the Included Retaining Ring
  • Excellent for Fixed Mounting of SM-Threaded Components

Fixed Optic Mounts with Internal and External Threads (LMRS Series)

  • Fixed Mounts for Ø1/2", Ø1" and Ø2" Optics
  • Internal and External Threads for Mounting Externally or Internally SM05-, SM1- or SM2-Threaded Optical Components
  • 8-32 (M4) Tapped Hole Allows for Mounting to Ø1/2" Posts
  • SM-Threaded Components can be Added or Removed without Losing Access to the Mounted Optic

Fixed Lens Mounts with Internal Threads and No Retaining Lip (SMR Series)

  • Fixed Mounts for Ø1/2", Ø1", and Ø2" Optics
  • Mount Optics Using two Retaining Rings (Sold Separately)
  • Mount Externally SM-Threaded Components on Either Side
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts

Mounting Small Optics (Ø5 mm to Ø10 mm)

  • Allows Ø5 mm, Ø6 mm, Ø6.35 mm, Ø7 mm, Ø7.4 mm, Ø8 mm, and Ø9 mm Optics to Fit into SM05-Compatible Components
  • Adapt Ø10 mm Optics to an Ø18 mm Outer Diameter for Mounting into a LMR18(/M) Fixed Lens Mount
  • Stainless Steel Adapter Rings
  • Lenses are Held in Adapter Ring with Epoxy using the Epoxy Reservoirs

Lens Mount Alignment Plates

  • Quick and Easy Drop-In Visual Beam Alignment Tool
  • Ø1 mm Through Hole
  • For use with LMR1 or LMR2 Fixed Lens Holders and SM1 or SM2 Series Lens Tubes
Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part Number Product Description
LMR05 Support Documentation LMR05 : Imperial Lens Mount for Ø1/2" Optics, 8-32 Tap
LMR05/M Support Documentation LMR05/M : Lens Mount For 0.5" Optics, M4 Tap
LMR05S Support Documentation LMR05S : Ø1/2" Lens Mount with Internal and External SM05 Threads, 8-32 Tap
LMR05S/M Support Documentation LMR05S/M : Ø1/2" Lens Mount with Internal and External SM05 Threads, M4 Tap
LMR1 Support Documentation LMR1 : Imperial Lens Mount For 1" Optics, 8-32 Tap
LMR1.5 Support Documentation LMR1.5 : Imperial Lens Mount For 1.5" Optics, 8-32 Tap
LMR1.5/M Support Documentation LMR1.5/M : Lens Mount For 1.5" Optics, M4 Tap
LMR1/M Support Documentation LMR1/M : Lens Mount For 1" Optics, M4 Tap
LMR100 Support Documentation LMR100 : Lens Mount for Ø100 mm Optics, One Retaining Ring Included, 8-32 Tap
LMR100/M Support Documentation LMR100/M : Lens Mount for Ø100 mm Optics, One Retaining Ring Included, M4 Tap
LMR15 Support Documentation LMR15 : Lens Mount for Ø15 mm Optics, One Retaining Ring Included, 8-32 Tap
LMR15/M Support Documentation LMR15/M : Lens Mount for Ø15 mm Optics, One Retaining Ring Included, M4 Tap
LMR18 Support Documentation LMR18 : Imperial Lens Mounting Ring for 18mm Optics, 8-32 Tap
LMR18/M Support Documentation LMR18/M : Lens mounting ring for 18 mm Optics, M4 Tap
LMR1AP Support Documentation LMR1AP : Alignment Plate for LMR1 Mount and SM1 Lens Tubes
LMR1S Support Documentation LMR1S : Ø1" Lens Mount with Internal and External SM1 Threads, 8-32 Tap
LMR1S/M Support Documentation LMR1S/M : Ø1" Lens Mount with Internal and External SM1 Threads, M4 Tap
LMR2 Support Documentation LMR2 : Imperial Lens Mount For 2" Optics, 8-32 Tap
LMR2/M Support Documentation LMR2/M : Lens Mount For 2" Optics, M4 Tap
LMR20 Support Documentation LMR20 : Lens Mount for Ø20 mm Optics, One Retaining Ring Included, 8-32 Tap
LMR20/M Support Documentation LMR20/M : Lens Mount for Ø20 mm Optics, One Retaining Ring Included, M4 Tap
LMR2AP Support Documentation LMR2AP : Alignment Plate for LMR2 Mount and SM2 Lens Tubes
LMR2S Support Documentation LMR2S : Ø2" Lens Mount with Internal and External SM2 Threads, 8-32 Tap
LMR2S/M Support Documentation LMR2S/M : Ø2" Lens Mount with Internal and External SM2 Threads, M4 Tap
LMR3 Support Documentation LMR3 : Lens Mount for Ø3" Optics, One Retaining Ring Included, 8-32 Tap
LMR3/M Support Documentation LMR3/M : Lens Mount for Ø3" Optics, One Retaining Ring Included, M4 Tap
LMR30 Support Documentation LMR30 : Imperial Lens Mounting Ring for 30 mm Optics, 8-32 Tap
LMR30/M Support Documentation LMR30/M : Lens mounting ring for 30 mm Optics, M4 Tap
LMR4 Support Documentation LMR4 : Lens Mount for Ø4" Optics, One Retaining Ring Included, 8-32 Tap
LMR4/M Support Documentation LMR4/M : Lens Mount for Ø4" Optics, One Retaining Ring Included, M4 Tap
LMR45 Support Documentation LMR45 : Lens Mount for Ø45 mm Optics, One Retaining Ring Included, 8-32 Tap
LMR45/M Support Documentation LMR45/M : Lens Mount for Ø45 mm Optics, One Retaining Ring Included, M4 Tap
LMR75 Support Documentation LMR75 : Imperial Lens mounting ring for 75 mm Optics, 8-32 Tap
LMR75/M Support Documentation LMR75/M : Lens mounting ring for 75 mm Optics, M4 Tap
LMRA10 Support Documentation LMRA10 : LMR18 Adapter for Ø10.0 mm Optics
Part Number Product Description
LMRA5 Support Documentation LMRA5 : LMR05 Adapter for Ø5 mm Optics
LMRA6 Support Documentation LMRA6 : LMR05 Adapter for Ø6 mm Optics
LMRA6.35 Support Documentation LMRA6.35 : LMR05 Adapter for Ø6.35 mm Optics
LMRA7 Support Documentation LMRA7 : LMR05 Adapter for Ø7.0 mm Optics
LMRA7.4 Support Documentation LMRA7.4 : LMR05 Adapter for Ø7.4 mm Optics
LMRA8 Support Documentation LMRA8 : LMR05 Adapter for Ø8.0 mm Optics
LMRA9 Support Documentation LMRA9 : LMR05 Adapter for Ø9.0 mm Optics
SM05RR Support Documentation SM05RR : SM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts
SM1.5RR Support Documentation SM1.5RR : SM1.5 Retaining Ring for Ø1.5" Lens Mounts
SM100RR Support Documentation SM100RR : SM100 Retaining Ring for Ø100 mm Mounts
SM15RR Support Documentation SM15RR : SM15 Retaining Ring for Ø15 mm Lens Mounts
SM18RR Support Documentation SM18RR : SM18 Retaining Ring for Ø18 mm Lens Mounts
SM1RR Support Documentation SM1RR : SM1 Retaining Ring for Ø1" Lens Tubes and Mounts
SM20RR Support Documentation SM20RR : SM20 Retaining Ring for Ø20 mm Lens Mounts
SM2RR Support Documentation SM2RR : SM2 Retaining Ring for Ø2" Lens Tubes and Mounts
SM30RR Support Documentation SM30RR : SM30 Retaining Ring for Ø30 mm Lens Mounts
SM3RR Support Documentation SM3RR : SM3 Retaining Ring for Ø3" Lens Tubes and Mounts
SM45RR Support Documentation SM45RR : SM45 Retaining Ring for Ø45 mm Lens Mounts
SM4RR Support Documentation SM4RR : SM4 Retaining Ring for Ø4" Mounts
SM75RR Support Documentation SM75RR : SM75 Retaining Ring for Ø75 mm Mounts
SMR05 Support Documentation SMR05 : Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, 8-32 Tap
SMR05/M Support Documentation SMR05/M : Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, M4 Tap
SMR1 Support Documentation SMR1 : Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, 8-32 Tap
SMR1/M Support Documentation SMR1/M : Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, M4 Tap
SMR2 Support Documentation SMR2 : Ø2" Lens Mount with SM2 Internal Threads and No Retaining Lip, 8-32 Tap
SMR2/M Support Documentation SMR2/M : Ø2" Lens Mount with SM2 Internal Threads and No Retaining Lip, M4 Tap
SPW102 Support Documentation SPW102 : Adjustable Spanner Wrench, Replacement Blade Set
SPW602 Support Documentation SPW602 : SM1 Spanner Wrench, Graduated, Length = 3.88"
SPW603 Support Documentation SPW603 : SM05 Spanner Wrench, Length = 1"
SPW604 Support Documentation SPW604 : SM2 Spanner Wrench, Length = 4.35"
SPW605 Support Documentation SPW605 : SM3 Spanner Wrench, Length = 4.35"
SPW606 Support Documentation SPW606 : SM1 Spanner Wrench, Length = 1"
SPW607 Support Documentation SPW607 : SM30 Spanner Wrench, Length = 4.35"
SPW801 Support Documentation SPW801 : Adjustable Spanner Wrench

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Poster: Tyler
Posted Date: 2009-03-12 10:55:02.0
A response from Tyler at Thorlabs to stevenbearden: Thank you for telling us that we are on the right track to providing you the information you need to choose the correct products. If in the future you have any suggestions on how to further improve the presentation of the products or have additional input on a presentation feature that you like, please let us know.
Poster: stevenbearden
Posted Date: 2009-03-11 19:09:18.0
Just a note to thank you for a wonderful website. I am helping a small company design an enclosure that will utilize some THORLAB hardware inside. I have never visited a site for dimensional information and found what I needed as fast and easy (and accurately!) as I did today on yours. Great job to those that did the work, and of course those that saw the need from within your company. I will promote the use of your products in future designs. Keep up the great work, we (out here) DO appreciate it! Sincerely, Steven Bearden
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Fixed Lens Mounts for Optics from Ø1/2" to Ø20 mm

Item #Optic
Diameter
Max Optic
Thicknessa
Clear
Aperture
Optical
Height
Included
Retaining Ring
Suggested
Spanner Wrench
LMR05(/M) Ø1/2" 0.21" (5 mm) Ø0.43" (Ø10.9 mm) 0.63" (16.0 mm) SM05RR SPW603
LMR15(/M) Ø15 mm 0.30" (7.7 mm) Ø0.50" (Ø12.7 mm) 0.70" (17.8 mm) SM15RR SPW801
LMR18(/M) Ø18 mm 0.29" (7.4 mm) Ø0.61" (Ø15.5 mm) 0.75" (19.1 mm) SM18RR SPW801
LMR20(/M) Ø20 mm 0.29" (7.4 mm) Ø0.68" (Ø17.3 mm) 0.82" (20.8 mm) SM20RR SPW801
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMR05 Support Documentation
LMR05 Imperial Lens Mount for Ø1/2" Optics, 8-32 Tap
$15.02
Today
LMR15 Support Documentation
LMR15 Lens Mount for Ø15 mm Optics, One Retaining Ring Included, 8-32 Tap
$21.00
Today
LMR18 Support Documentation
LMR18 Imperial Lens Mounting Ring for 18mm Optics, 8-32 Tap
$23.10
Today
LMR20 Support Documentation
LMR20 Lens Mount for Ø20 mm Optics, One Retaining Ring Included, 8-32 Tap
$25.20
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR05/M Support Documentation
LMR05/M Lens Mount For 0.5" Optics, M4 Tap
$15.02
Today
LMR15/M Support Documentation
LMR15/M Lens Mount for Ø15 mm Optics, One Retaining Ring Included, M4 Tap
$21.00
Today
LMR18/M Support Documentation
LMR18/M Lens mounting ring for 18 mm Optics, M4 Tap
$23.10
Today
LMR20/M Support Documentation
LMR20/M Lens Mount for Ø20 mm Optics, One Retaining Ring Included, M4 Tap
$25.20
Today

Fixed Lens Mounts for Optics from Ø1" to Ø45 mm

Item #Optic
Diameter
Max Optic
Thicknessa
Clear
Aperture
Optical
Height
Included
Retaining Ring
Suggested
Spanner Wrench
LMR1(/M) Ø1" 0.28" (7.1 mm) Ø0.90" (Ø23.0mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
LMR30(/M) Ø30 mm 0.28" (7.1 mm) Ø1.10" (Ø28.0 mm) 1.00" (25.4 mm) SM30RR SPW607
LMR1.5(/M) Ø1.5" 0.36" (9.1 mm) Ø1.40" (Ø35.6 mm) 1.13" (28.7 mm) SM1.5RR SPW801
LMR45(/M) Ø45 mm 0.36" (9.2 mm) Ø1.67" (Ø42.4 mm) 1.30" (33.0 mm) SM45RR SPW801
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMR1 Support Documentation
LMR1 Imperial Lens Mount For 1" Optics, 8-32 Tap
$15.23
Today
LMR30 Support Documentation
LMR30 Imperial Lens Mounting Ring for 30 mm Optics, 8-32 Tap
$27.83
Today
LMR1.5 Support Documentation
LMR1.5 Imperial Lens Mount For 1.5" Optics, 8-32 Tap
$23.52
Today
LMR45 Support Documentation
LMR45 Lens Mount for Ø45 mm Optics, One Retaining Ring Included, 8-32 Tap
$31.50
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR1/M Support Documentation
LMR1/M Lens Mount For 1" Optics, M4 Tap
$15.23
Today
LMR30/M Support Documentation
LMR30/M Lens mounting ring for 30 mm Optics, M4 Tap
$27.83
Today
LMR1.5/M Support Documentation
LMR1.5/M Lens Mount For 1.5" Optics, M4 Tap
$23.52
Today
LMR45/M Support Documentation
LMR45/M Lens Mount for Ø45 mm Optics, One Retaining Ring Included, M4 Tap
$31.50
Today

Fixed Lens Mounts for Optics from Ø2" to Ø4"

Item #Optic
Diameter
Max Optic
Thicknessa
Clear
Aperture
Optical
Height
Included
Retaining Ring
Suggested
Spanner Wrench
LMR2(/M) Ø2" 0.36" (9.1 mm) Ø1.90" (Ø48.5 mm) 1.35" (34.3 mm) SM2RR SPW604
LMR75(/M) Ø75 mm 0.30" (7.6 mm) Ø2.81" (Ø71.4 mm) 2.00" (50.8 mm) SM75RR SPW801
LMR3 /M) Ø3" 0.36" (9.2 mm) Ø2.81" (Ø71.4 mm) 2.00" (50.8 mm) SM3RR SPW605
LMR100(/M) Ø100 mm 0.54" (13.7 mm) Ø3.80" (Ø96.4 mm) 3.00" (76.2 mm) SM100RR -
LMR4(/M) Ø4" 0.54" (13.7 mm) Ø3.81" (Ø96.8 mm) 3.00" (76.2 mm) SM4RR -
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMR2 Support Documentation
LMR2 Imperial Lens Mount For 2" Optics, 8-32 Tap
$24.68
Today
LMR75 Support Documentation
LMR75 Imperial Lens mounting ring for 75 mm Optics, 8-32 Tap
$51.45
Today
LMR3 Support Documentation
LMR3 Customer Inspired! Lens Mount for Ø3" Optics, One Retaining Ring Included, 8-32 Tap
$51.45
Today
LMR100 Support Documentation
LMR100 Lens Mount for Ø100 mm Optics, One Retaining Ring Included, 8-32 Tap
$63.00
Today
LMR4 Support Documentation
LMR4 Customer Inspired! Lens Mount for Ø4" Optics, One Retaining Ring Included, 8-32 Tap
$63.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR2/M Support Documentation
LMR2/M Lens Mount For 2" Optics, M4 Tap
$24.68
Today
LMR75/M Support Documentation
LMR75/M Lens mounting ring for 75 mm Optics, M4 Tap
$51.45
Today
LMR3/M Support Documentation
LMR3/M Customer Inspired! Lens Mount for Ø3" Optics, One Retaining Ring Included, M4 Tap
$51.45
Today
LMR100/M Support Documentation
LMR100/M Lens Mount for Ø100 mm Optics, One Retaining Ring Included, M4 Tap
$63.00
Today
LMR4/M Support Documentation
LMR4/M Customer Inspired! Lens Mount for Ø4" Optics, One Retaining Ring Included, M4 Tap
$63.00
Today

Lens Mounts with Internal and External Threading

LMR1S Application Image
SM1D12C Iris shown with an SM1L10 Lens Tube that has been mounted to an LMR1S Mount.
  • Internal and External SM05, SM1 or SM2 Threads
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts
  • Add or Remove SM-Threaded Components without Losing Access to the Mounted Optic

These fixed lens mounts, which feature internal SM threading on one side and external SM threading on the other, are available for Ø1/2", Ø1", and Ø2" optics. The optic is secured in the mount with the included retaining ring and can be post mounted to a Ø1/2" Post.

The internal threading is deep enough to hold most unmounted optics, while the external threading is just deep enough to allow for the mounting of lens tubes, irises, or other internally threaded SM components (see picture to the right). Although the functionality of this part can be duplicated by combining two other Thorlabs parts, a lens tube slip ring and a lens tube, these fixed mounts offer significant price reduction, increased convenience, and smaller package size.

Item # Optic
Diameter
Max Optic
Thicknessa
Clear
Aperture
Optical
Height
Included
Retaining Ring
Suggested
Spanner Wrench
LMR05S(/M) Ø1/2" 0.21" (5 mm) Ø0.43" (Ø10.9 mm) 0.63" (16.0 mm) SM05RR SPW603
LMR1S(/M) Ø1" 0.28" (7.1 mm) Ø0.90" (Ø23.0 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
LMR2S(/M) Ø2" 0.36" (9.1 mm) Ø1.90" (Ø48.5 mm) 1.36" (34.5 mm) SM2RR SPW604
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMR05S Support Documentation
LMR05S Ø1/2" Lens Mount with Internal and External SM05 Threads, 8-32 Tap
$24.15
Today
LMR1S Support Documentation
LMR1S Customer Inspired! Ø1" Lens Mount with Internal and External SM1 Threads, 8-32 Tap
$26.25
Today
LMR2S Support Documentation
LMR2S Ø2" Lens Mount with Internal and External SM2 Threads, 8-32 Tap
$30.45
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
LMR05S/M Support Documentation
LMR05S/M Ø1/2" Lens Mount with Internal and External SM05 Threads, M4 Tap
$24.15
Today
LMR1S/M Support Documentation
LMR1S/M Customer Inspired! Ø1" Lens Mount with Internal and External SM1 Threads, M4 Tap
$26.25
Today
LMR2S/M Support Documentation
LMR2S/M Ø2" Lens Mount with Internal and External SM2 Threads, M4 Tap
$30.45
Today

Fixed Lens Mounts with No Retaining Lip

  • SM05, SM1, or SM2 Internal Thread
  • Mount Optics Using Two Retaining Rings (Sold Separately)
  • Mount Externally SM-Threaded Components on Either Side
  • 8-32 (M4) Tapped Hole for Mounting to Ø1/2" Posts

These SM05, SM1, or SM2-threaded mounting rings feature internal SM threading that extends the full length of the mount without any retaining lip. They are perfect for mounting lens tubes and other mounted optics, and can also be used to hold unmounted optics when used with two retaining rings (sold separately below).

Item # Optic
Diameter
Max Optic
Thicknessa
Clear
Aperture
Optical
Height
Compatible Retaining
Ring (Not Included)
Suggested
Spanner Wrench
SMR05(/M) Ø1/2" 0.16" (4 mm) Ø0.5" (Ø12.7 mm) 0.63" (16.0 mm) SM05RR SPW603
SMR1(/M) Ø1" 0.24" (6.1 mm) Ø1.0" (Ø25.4 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
SMR2(/M) Ø2" 0.30" (7.6 mm) Ø2.0" (Ø50.8 mm) 1.35" (34.0 mm) SM2RR SPW604
  • This specification is true for thin lenses. For lenses with small focal lengths, and hence large lens curvatures, please contact Tech Support to ensure a proper fit.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
SMR05 Support Documentation
SMR05 Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, 8-32 Tap
$16.80
Today
SMR1 Support Documentation
SMR1 Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, 8-32 Tap
$17.85
Today
SMR2 Support Documentation
SMR2 Ø2" Lens Mount with SM2 Internal Threads and No Retaining Lip, 8-32 Tap
$25.20
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
SMR05/M Support Documentation
SMR05/M Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, M4 Tap
$16.80
Today
SMR1/M Support Documentation
SMR1/M Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, M4 Tap
$17.85
Today
SMR2/M Support Documentation
SMR2/M Ø2" Lens Mount with SM2 Internal Threads and No Retaining Lip, M4 Tap
$25.20
Lead Time

LMR Small Optic Adapters

Lens Mounted App Shot

LA1116 Lens epoxied into an LMRA6 Adapter using NOA61 Epoxy; the mounted lens was then placed in an LMR05 Mount
Item # Optic Diameter Clear Aperture Outer Diameter Thickness Compatible
Mounts
Typ. Max
LMRA5 Ø5 mm Ø5.05 mm Ø3.81 mm (Ø0.150") Ø12.7 mm (Ø1/2") 2.16 mm (0.085") LMR05 Lens Mount

SM05 Lens Tubes

16 mm Cage Plates,
XY Translator,
and Components

LMRA6 Ø6 mm Ø6.07 Ø4.82 mm (Ø0.190")
LMRA6.35 Ø6.35 mm Ø6.4 Ø5.38 mm (Ø0.212")
LMRA7 Ø7 mm Ø7.03 Ø6.04 mm (Ø0.238")
LMRA7.4 Ø7.4 mm Ø7.41 Ø6.35 mm (Ø0.250")
LMRA8 Ø8 mm Ø8.02 Ø6.98 mm (Ø0.275")
LMRA9 Ø9 mm Ø9.01 Ø7.87 mm (Ø0.310")
LMRA10 Ø10 mm Ø10.03 Ø8.76 mm (Ø0.345") Ø18 mm (Ø0.71") 2.54 mm (0.100") LMR18 Lens Mount

The optic adapter is designed to allow the lens to be epoxied into place (NOA61 epoxy recommended); simply place a drop or two of epoxy into each of the epoxy reservoirs in the adapter. Once the optic is secured in the adapter, the new assembly can be held in our LMR05 (LMR18 for LMRA10) mount with the included SM05RR (SM18RR) Retaining Ring.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMRA5 Support Documentation
LMRA5 LMR05 Adapter for Ø5 mm Optics
$15.00
Today
LMRA6 Support Documentation
LMRA6 LMR05 Adapter for Ø6 mm Optics
$15.00
Today
LMRA6.35 Support Documentation
LMRA6.35 LMR05 Adapter for Ø6.35 mm Optics
$15.00
Today
LMRA7 Support Documentation
LMRA7 LMR05 Adapter for Ø7.0 mm Optics
$13.80
Today
LMRA7.4 Support Documentation
LMRA7.4 LMR05 Adapter for Ø7.4 mm Optics
$13.80
Today
LMRA8 Support Documentation
LMRA8 LMR05 Adapter for Ø8.0 mm Optics
$15.00
Today
LMRA9 Support Documentation
LMRA9 LMR05 Adapter for Ø9.0 mm Optics
$15.00
Today
LMRA10 Support Documentation
LMRA10 LMR18 Adapter for Ø10.0 mm Optics
$20.00
Today

Lens Mount Alignment Plates

Lense Mount Alignment Plate Application

These alignment targets can be quickly and easily dropped onto one of our fixed lens holder or lens tubes allowing the user to align a visible beam, using the center Ø1 mm through hole. Once the beam is aligned, the tool can be lifted from the lens holder or lens tube without disturbing the alignment and can later be replaced into approximately the same position.

For optimal visual alignment of the beam, both plates feature laser-engraved concentric circles, with the diameter of each circle being 2 mm greater than the previous. The LMR1AP alignment plate has eight of these concentric circles and fits Ø1" fixed optics mounts and lens tubes, while the LMR2AP alignment plate has twelve concentric circles and fits Ø2" fixed optics mounts and lens tubes.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
LMR1AP Support Documentation
LMR1AP Customer Inspired! Alignment Plate for LMR1 Mount and SM1 Lens Tubes
$23.10
Today
LMR2AP Support Documentation
LMR2AP Customer Inspired! Alignment Plate for LMR2 Mount and SM2 Lens Tubes
$27.30
Today

SM Series Retaining Rings for Fixed Lens Mounts

These retaining rings are replacements for those that are provided with our fixed lens mounts featured above. We also offer stress-free and plastic retaining rings for our Ø1.0" lens mounts, and retaining rings in additional sizes on our main SM-Threaded Retaining Rings presentation.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
SM05RR Support Documentation
SM05RR SM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts
$4.00
Today
SM15RR Support Documentation
SM15RR SM15 Retaining Ring for Ø15 mm Lens Mounts
$9.50
Today
SM18RR Support Documentation
SM18RR SM18 Retaining Ring for Ø18 mm Lens Mounts
$9.50
Today
SM20RR Support Documentation
SM20RR SM20 Retaining Ring for Ø20 mm Lens Mounts
$9.50
Today
SM1RR Support Documentation
SM1RR SM1 Retaining Ring for Ø1" Lens Tubes and Mounts
$4.50
Today
SM30RR Support Documentation
SM30RR SM30 Retaining Ring for Ø30 mm Lens Mounts
$11.00
Today
SM1.5RR Support Documentation
SM1.5RR SM1.5 Retaining Ring for Ø1.5" Lens Mounts
$9.50
Today
SM45RR Support Documentation
SM45RR SM45 Retaining Ring for Ø45 mm Lens Mounts
$12.20
Today
SM2RR Support Documentation
SM2RR SM2 Retaining Ring for Ø2" Lens Tubes and Mounts
$6.75
Today
SM75RR Support Documentation
SM75RR SM75 Retaining Ring for Ø75 mm Mounts
$14.30
Today
SM3RR Support Documentation
SM3RR SM3 Retaining Ring for Ø3" Lens Tubes and Mounts
$14.30
Today
SM100RR Support Documentation
SM100RR SM100 Retaining Ring for Ø100 mm Mounts
$16.60
Today
SM4RR Support Documentation
SM4RR Customer Inspired! SM4 Retaining Ring for Ø4" Mounts
$16.60
Today

Spanner Wrenches for SM-Series Retaining Rings

CT101 Application
Click to Enlarge

The SPW603 Spanner Wrench for SM05 Lens Tubes Interconnects to Reach the Retaining Rings in Long Lens Tubes
Spanner Wrench Application
Click to Enlarge
SPW602 Spanner Wrench with Exposed Graduations
  • SPW603: For SM05RR Retaining Rings (Length = 1")
  • SPW606: For SM1RR Retaining Rings (Length = 1")
  • SPW602: For SM1RR Retaining Rings (Length = 3.88", Graduated)
  • SPW607: For SM30RR Retaining Rings (Length = 4.35")
  • SPW604: For SM2RR Retaining Rings (Length = 4.35")
  • SPW605: For SM3RR Retaining Rings (Length = 4.35")

The hollow construction of these spanner wrenches allows SM-series retaining rings to be installed or adjusted without obscuring the beam path. They include guide flanges that prevent most optical surfaces from being scratched while the wrench is being inserted, and knurled handles that provide improved grip.

As shown to the right, the SPW602 additionally features an engraved depth scale with imperial and metric increments (0.02" and 0.5 mm, respectively), thereby enabling precise positioning of optics.

For retaining rings not covered by our standard spanner wrenches, please see the SPW801 Adjustable Spanner Wrench sold at the bottom of the page. The long blades on the SPW801 also prevent scratches caused by the guide flanges on lenses with high curvature.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
SPW603 Support Documentation
SPW603 SM05 Spanner Wrench, Length = 1"
$24.00
Today
SPW606 Support Documentation
SPW606 Customer Inspired! SM1 Spanner Wrench, Length = 1"
$26.00
Today
SPW602 Support Documentation
SPW602 SM1 Spanner Wrench, Graduated, Length = 3.88"
$26.00
Today
SPW607 Support Documentation
SPW607 Customer Inspired! SM30 Spanner Wrench, Length = 4.35"
$40.00
Today
SPW604 Support Documentation
SPW604 Customer Inspired! SM2 Spanner Wrench, Length = 4.35"
$43.40
Today
SPW605 Support Documentation
SPW605 SM3 Spanner Wrench, Length = 4.35"
$76.50
Today

Adjustable Spanner Wrench

  • Diameter Range from 0.12" to 2.89" (3.0 mm to 73.4 mm)
  • Self-Centering, One-Handed Diameter Adjustment Mechanism
  • Replaceable Stainless Steel Blades

Thorlabs' Adjustable Spanner Wrench features a spanning range that is continuously adjustable from 0.12" to 2.89" (3.0 mm to 73.4 mm). It is capable of providing an exact fit for SM-series retaining rings as large as the SM3RR for Ø3" Lens Tubes and Mounts. The diameter spanned by the blades remains centered while the knurled knob is adjusted.

The reversible blades have a flat tip on one end intended for use with retaining rings, and an edge-offset fine point on the opposing end for adapters with holes. The blades extend 1.6" (40.7 mm) from the body of the wrench, helping to avoid scratching of short-focal-length lenses caused by the guide flanges on our standard spanner wrenches. To reverse the blades, a 0.050" (1.3 mm) balldriver or hex key is needed. Replacement blade pairs are available separately.

The SPW801 wrench withstands a maximum torque of 80 inch-pounds (9 N·m).

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
SPW801 Support Documentation
SPW801 Adjustable Spanner Wrench
$95.90
Today
SPW102 Support Documentation
SPW102 Adjustable Spanner Wrench, Replacement Blade Set
$27.90
Today
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