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Fixed Lens Mounts


  • Fixed Mounts for Various Optic Diameters
  • 8-32 (M4) Tapped for Post Mounting
  • Stainless Steel Lens Adapters Available for Small Optics

LMR100

Shown with a
Plano-Convex Lens

LMR1S

LMR1

Shown with
a ZnSe Lens

Adapt Smaller Optics to Our
SM05-Compatible Mounts

LMRA10

LMRA5

LMR05 Shown with LMRA6

Related Items

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 NumberProduct 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 NumberProduct 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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Posted Comments:
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.
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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 ApertureOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR05(/M) Ø1/2" or Ø12.5 mm  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 - Imperial Price Available / Ships
LMR05 Support Documentation
LMR05Imperial Lens Mount for Ø1/2" Optics, 8-32 Tap
$15.02
Today
LMR15 Support Documentation
LMR15Lens Mount for Ø15 mm Optics, One Retaining Ring Included, 8-32 Tap
$21.00
Today
LMR18 Support Documentation
LMR18Imperial Lens Mounting Ring for 18mm Optics, 8-32 Tap
$23.10
Today
LMR20 Support Documentation
LMR20Lens 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/MLens Mount For 0.5" Optics, M4 Tap
$15.02
Today
LMR15/M Support Documentation
LMR15/MLens Mount for Ø15 mm Optics, One Retaining Ring Included, M4 Tap
$21.00
Today
LMR18/M Support Documentation
LMR18/MLens mounting ring for 18 mm Optics, M4 Tap
$23.10
Today
LMR20/M Support Documentation
LMR20/MLens 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 ApertureOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR1(/M) Ø1" or Ø25 mm 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 - Imperial Price Available / Ships
LMR1 Support Documentation
LMR1Imperial Lens Mount For 1" Optics, 8-32 Tap
$15.23
Today
LMR30 Support Documentation
LMR30Imperial Lens Mounting Ring for 30 mm Optics, 8-32 Tap
$27.83
Today
LMR1.5 Support Documentation
LMR1.5Imperial Lens Mount For 1.5" Optics, 8-32 Tap
$23.52
Today
LMR45 Support Documentation
LMR45Lens 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/MLens Mount For 1" Optics, M4 Tap
$15.23
Today
LMR30/M Support Documentation
LMR30/MLens mounting ring for 30 mm Optics, M4 Tap
$27.83
Today
LMR1.5/M Support Documentation
LMR1.5/MLens Mount For 1.5" Optics, M4 Tap
$23.52
Today
LMR45/M Support Documentation
LMR45/MLens 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 ApertureOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR2(/M) Ø2" or Ø50 mm 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 - Imperial Price Available / Ships
LMR2 Support Documentation
LMR2Imperial Lens Mount For 2" Optics, 8-32 Tap
$24.68
Today
LMR75 Support Documentation
LMR75Imperial Lens mounting ring for 75 mm Optics, 8-32 Tap
$51.45
Today
LMR3 Support Documentation
LMR3Customer Inspired!Lens Mount for Ø3" Optics, One Retaining Ring Included, 8-32 Tap
$51.45
Today
LMR100 Support Documentation
LMR100Lens Mount for Ø100 mm Optics, One Retaining Ring Included, 8-32 Tap
$63.00
Today
LMR4 Support Documentation
LMR4Customer 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/MLens Mount For 2" Optics, M4 Tap
$24.68
Today
LMR75/M Support Documentation
LMR75/MLens mounting ring for 75 mm Optics, M4 Tap
$51.45
Today
LMR3/M Support Documentation
LMR3/MCustomer Inspired!Lens Mount for Ø3" Optics, One Retaining Ring Included, M4 Tap
$51.45
Today
LMR100/M Support Documentation
LMR100/MLens Mount for Ø100 mm Optics, One Retaining Ring Included, M4 Tap
$63.00
Today
LMR4/M Support Documentation
LMR4/MCustomer 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 DiameterMax Optic
Thicknessa
Clear ApertureOptical HeightIncluded
Retaining Ring
Suggested
Spanner Wrench
LMR05S(/M) Ø1/2" or Ø12.5 mm 0.21" (5 mm) Ø0.43" (Ø10.9 mm) 0.63" (16.0 mm) SM05RR SPW603
LMR1S(/M) Ø1" or Ø25 mm 0.28" (7.1 mm) Ø0.90" (Ø23.0 mm) 0.87" (22.1 mm) SM1RR SPW602 or SPW606
LMR2S(/M) Ø2" or Ø50 mm 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 - Imperial Price Available / Ships
LMR05S Support Documentation
LMR05SØ1/2" Lens Mount with Internal and External SM05 Threads, 8-32 Tap
$24.15
Today
LMR1S Support Documentation
LMR1SCustomer Inspired!Ø1" Lens Mount with Internal and External SM1 Threads, 8-32 Tap
$26.25
Today
LMR2S Support Documentation
LMR2SØ2" 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/MØ1/2" Lens Mount with Internal and External SM05 Threads, M4 Tap
$24.15
Today
LMR1S/M Support Documentation
LMR1S/MCustomer Inspired!Ø1" Lens Mount with Internal and External SM1 Threads, M4 Tap
$26.25
Today
LMR2S/M Support Documentation
LMR2S/MØ2" 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 ApertureOptical HeightCompatible 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 - Imperial Price Available / Ships
    SMR05 Support Documentation
    SMR05Ø1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, 8-32 Tap
    $16.80
    Today
    SMR1 Support Documentation
    SMR1Ø1" Lens Mount with SM1 Internal Threads and No Retaining Lip, 8-32 Tap
    $17.85
    Today
    SMR2 Support Documentation
    SMR2Ø2" 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/MØ1/2" Lens Mount with SM05 Internal Threads and No Retaining Lip, M4 Tap
    $16.80
    Today
    SMR1/M Support Documentation
    SMR1/MØ1" Lens Mount with SM1 Internal Threads and No Retaining Lip, M4 Tap
    $17.85
    Today
    SMR2/M Support Documentation
    SMR2/MØ2" Lens Mount with SM2 Internal Threads and No Retaining Lip, M4 Tap
    $25.20
    Today

    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 DiameterClear ApertureOuter DiameterThicknessCompatible
    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 Price Available / Ships
    LMRA5 Support Documentation
    LMRA5LMR05 Adapter for Ø5 mm Optics
    $15.00
    Today
    LMRA6 Support Documentation
    LMRA6LMR05 Adapter for Ø6 mm Optics
    $15.00
    Today
    LMRA6.35 Support Documentation
    LMRA6.35LMR05 Adapter for Ø6.35 mm Optics
    $15.00
    Today
    LMRA7 Support Documentation
    LMRA7LMR05 Adapter for Ø7.0 mm Optics
    $13.80
    Today
    LMRA7.4 Support Documentation
    LMRA7.4LMR05 Adapter for Ø7.4 mm Optics
    $13.80
    Today
    LMRA8 Support Documentation
    LMRA8LMR05 Adapter for Ø8.0 mm Optics
    $15.00
    Today
    LMRA9 Support Documentation
    LMRA9LMR05 Adapter for Ø9.0 mm Optics
    $15.00
    Today
    LMRA10 Support Documentation
    LMRA10LMR18 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 Ø1mm 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 Price Available / Ships
    LMR1AP Support Documentation
    LMR1APCustomer Inspired!Alignment Plate for LMR1 Mount and SM1 Lens Tubes
    $23.10
    Today
    LMR2AP Support Documentation
    LMR2APCustomer 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 Price Available / Ships
    SM05RR Support Documentation
    SM05RRSM05 Retaining Ring for Ø1/2" Lens Tubes and Mounts
    $4.00
    Today
    SM15RR Support Documentation
    SM15RRSM15 Retaining Ring for Ø15 mm Lens Mounts
    $9.50
    Today
    SM18RR Support Documentation
    SM18RRSM18 Retaining Ring for Ø18 mm Lens Mounts
    $9.50
    Today
    SM20RR Support Documentation
    SM20RRSM20 Retaining Ring for Ø20 mm Lens Mounts
    $9.50
    Today
    SM1RR Support Documentation
    SM1RRSM1 Retaining Ring for Ø1" Lens Tubes and Mounts
    $4.50
    Today
    SM30RR Support Documentation
    SM30RRSM30 Retaining Ring for Ø30 mm Lens Mounts
    $11.00
    Today
    SM1.5RR Support Documentation
    SM1.5RRSM1.5 Retaining Ring for Ø1.5" Lens Mounts
    $9.50
    Today
    SM45RR Support Documentation
    SM45RRSM45 Retaining Ring for Ø45 mm Lens Mounts
    $12.20
    Today
    SM2RR Support Documentation
    SM2RRSM2 Retaining Ring for Ø2" Lens Tubes and Mounts
    $6.75
    Today
    SM75RR Support Documentation
    SM75RRSM75 Retaining Ring for Ø75 mm Mounts
    $14.30
    Today
    SM3RR Support Documentation
    SM3RRSM3 Retaining Ring for Ø3" Lens Tubes and Mounts
    $14.30
    Today
    SM100RR Support Documentation
    SM100RRSM100 Retaining Ring for Ø100 mm Mounts
    $16.60
    Today
    SM4RR Support Documentation
    SM4RRCustomer 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 Price Available / Ships
    SPW603 Support Documentation
    SPW603SM05 Spanner Wrench, Length = 1"
    $24.00
    Today
    SPW606 Support Documentation
    SPW606Customer Inspired!SM1 Spanner Wrench, Length = 1"
    $26.00
    Today
    SPW602 Support Documentation
    SPW602SM1 Spanner Wrench, Graduated, Length = 3.88"
    $26.00
    Today
    SPW607 Support Documentation
    SPW607Customer Inspired!SM30 Spanner Wrench, Length = 4.35"
    $40.00
    Today
    SPW604 Support Documentation
    SPW604Customer Inspired!SM2 Spanner Wrench, Length = 4.35"
    $43.40
    Today
    SPW605 Support Documentation
    SPW605SM3 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 Price Available / Ships
    SPW801 Support Documentation
    SPW801Adjustable Spanner Wrench
    $95.90
    Today
    SPW102 Support Documentation
    SPW102Adjustable Spanner Wrench, Replacement Blade Set
    $27.90
    Today
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