Optic Mounts with Interchangeable Rotating Optic Carriage
SM1- (1.035"-40) or SM2-Threaded (2.035"-40) Optic Carriage
Retaining Ring(s) Included for Secure Optic Mounting
Laser Engraved Scale with Graduations Every 2°, Labeled Every 20°
8-32 (M4) Tap for Post Mounting
These nested lens mounts systems consist of an inner optic carriage that rotates within the outer mounting ring. Single (LM1-B and LM2-B) and dual (DLM1) rotational optic versions are available. The optic carriages are radially laser engraved to allow for precise rotational changes. The optic carriages are retained within the mounting ring by either a thumbscrew or magnetic attachment. Additional optic carriages can be purchased and used for easy exchange of optics.
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.
Thorlabs offers a wide variety of manual and motorized rotation mounts and stages. Rotation mounts are designed with an inner bore to mount a Ø1/2", Ø1", or Ø2" optic, while rotation stages are designed with mounting taps to attach a variety of components or systems. Motorized options are powered by a DC Servo motor, 2 phase stepper motor, piezo inertia motor, or an Elliptec™ resonant piezo motor. Each offers 360° of continuous rotation.
5.50" x 4.42" (139.7 x 112.3 mm) (Not Including Micrometers)
Mounting Holes
Four Mounting Slots for 1/4"-20 (M6) Cap Screws
Four Mounting Slots for 1/4"-20 (M6) Cap Screws
Four Mounting Slots for 1/4"-20 (M6) Cap Screws
Two Mounting Slots for 1/4"-20 (M6) Cap Screws
Four Mounting Slots for 1/4"-20 (M6) Cap Screws
Side Taps for Vertical Mounting
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-
Two 1/4"-20 (M6)
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-
Cage System Compatibility
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N/A
Four 4-40 Taps on Top Surface for 30 mm Cage System
N/A
Four 4-40 Taps on Top Surface for 30 mm Cage System Four 4-40 Taps on Top Surface for 60 mm Cage System Four 4-40 Taps on Bottom Surface for 60 mm Cage System
-b
The stage profile is higher when it is mounted using the screw slots rather than stacked on another stage or accessory with mating dovetails.
The OCT-XYR1(/M) stage includes the XYR1A solid sample plate. This plate can be detached from the stage to reveal the same mounting features present on the XYR1(/M) stage.
Motorized Rotation Mounts and Stages
Motorized Rotation Mounts and Stages with Central Clear Apertures
One Counterbore for 1/4"-20 (M6) Cap Screw; Two Clearance Holes for 1/4"-20 (M6) Cap Screws
Mounting Bracket in ELL18K(/M) Bundle has Two Slots for 1/4"-20 (M6) Cap Screw
This stage is available in the KPRM1E(/M), which includes the PRMT1Z8(/M) Motorized Rotation Stage with the KDC101 K-Cube DC Servo Motor Controller.
This stage is available in the ELL18K(/M), which includes an interface board, mounting brackets, and connectors for PC control.
Posted Comments:
jjurado
 (posted 2011-09-02 14:06:00.0)
Response from Javier at Thorlabs to wjlentz: Thank you very much for your feedback. We will look into offering a version for 3" diameter optics of our LM1 and LM2 mounts. I will contact you directly for further discussion.
wjlentz
 (posted 2011-09-01 14:38:13.0)
I need the 3" version of the rotating optical mount.
Click to Enlarge The optic carriage is locked in place by a thumbscrew and can be easily removed from the main body of the mount.
Mount Ø1" Optics up to 0.37" (9.4 mm) Thick
Optic Carriage (LM1-A) and Mounting Ring (LM1-B or LM1-B/M) Sold Separately
Rotating Optic Carriage is Interchangeable for Quick Swapping
SM1-Threaded Optic Bore in Rotating Optic Carriage
Post Mountable via 8-32 (M4) Tap
Laser Engraved Graduation Marks Every 2° Labeled Every 20°
The LM1-A optic carriage can be nested inside of the LM1-B (LM1-B/M) mounting ring and offers 360° of continuous rotation for Ø1" optics. The optic bore of the LM1-A carriage features internal SM1 (1.035"-40) threading and can hold an optic up to 0.37" (9.4 mm) thick with the included SM1RR retaining ring or an optic in an SM1-threaded housing. The carriage attaches to the main body of the mount using a thumbscrew. To remove the carriage from the mount, simply loosen the thumbscrew. Extra LM1-A interchangeable rotating carriages are available to allow optics to be swapped out quickly and easily.
Each carriage has a 360° laser-engraved scale marked at 2° increments for precise, repeatable positioning. The top-located thumbscrew can be tightened to lock the rotation of the optic carriage and, along with the double bore on the mount, maintains a stable, three-point contact to hold the optic carriage. When the LM1-A is properly fastened in the LM1-B by the thumbscrew, the optic axis is 1.04" (26.3 mm for the LM1/B) above the top of the post.
The DLM1(/M) Dual Rotation Mount includes two independently rotating carriages (item # DLM1-A) for Ø1" optics that offer 360° of continuous rotation. The optic bore of the DLM1-A carriage features internal SM1 (1.035"-40) threading and can hold an optic up to 0.25" (6.4 mm) thick with the included SM1RR retaining ring or an optic in an SM1-threaded housing. The carriages magnetically attach to the main body of the mount. To remove a carriage from the mount, simply pull the carriage off the main body. Another carriage can then be snapped on in its place. Extra DLM1-A interchangeable rotating carriages are available to allow optics to be swapped out quickly and easily.
Each carriage has a knurled edge for adjusting rotation and a 360° laser-engraved scale marked at 2° increments for precise, repeatable positioning. Two top-located setscrews can be tightened with a 5/64" (2.0 mm) hex key or balldriver to lock the rotation of the optic carriages independently. When the rotation is locked, the double bore on the mount maintains a stable, three-point contact to hold the optic carriage.
The DLM1 mount is designed to put the optic axis 1.00" (25.0 mm for the DLM1/M) above the top of the post When two optics are mounted, the separation between them is 0.30" (7.6 mm). The dual rotation mount is ideal for creating variable polarizers and attenuators by mounting linear polarizers and wave plates in close proximity without having to align the optic axes of two separate rotation mounts. We do not recommend using this mount with lens tubes, as the torque applied to the optic bore may overcome the magnetic attachment.
Optic Carriage (LM2-A) and Mounting Ring (LM2-B or LM2-B/M) Sold Separately
Rotating Optic Carriage is Interchangeable for Quick Swapping
SM2-Threaded Optic Bore in Rotating Optic Carriage
Post Mountable via 8-32 (M4) Tap
Laser Engraved Scale with Graduations Every 2°, Labeled Every 20°
The LM2-A optic carriage can be nested inside of the LM2-B (LM2-B/M) mounting ring and offers 360° of continuous rotation for Ø2" optics. The optic bore of each carriage features internal SM2 (2.035"-40) threading and can hold an optic up to 0.46" (11.7 mm) thick with the included SM2RR retaining ring an optic in an SM2-threaded housing. The carriage attaches to the main body of the mount using a thumbscrew. To remove the carriage from the mount, simply loosen the thumbscrew. Extra LM2-A interchangeable rotating carriages are available to allow optics to be swapped out quickly at easily.
Each carriage has a 360° laser-engraved scale marked at 2° increments for precise, repeatable positioning. The top-located thumbscrew can be tightened to lock the rotation of the optic carriage and, along with the double bore on the mount, maintains a stable, three-point contact to hold the optic carriage. When the LM2-A is properly fastened in the LM2-B by the thumbscrew, the optic axis is 1.45" (36.8 mm for the LM2-B/M) above the top of the post.