Ø2" Adapters for Unmounted Optics
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AD2 Unthreaded Mounting Adapter in a KM200 Mirror Mount
These unthreaded adapters feature a smooth Ø2" outer surface and a double-bored counterbore to provide two lines of mounting contact. The counterbores in the AD2, AD2-30, and AD2-1.5 are Ø1", Ø30 mm and Ø1.5", respectively. Optics are secured against the two contact lines using a nylon-tipped setscrew.
The AD2-CA is designed with a 2" outer diameter and dual Ø1" internal bores. Please note that only one internal bore is meant for mounting the optic, which is held in place with an 8-32 nylon-tipped setscrew. This adapter enables separation of closely spaced beams with Ø1" circular optical components and is ideal for applications that require a narrow-angle back reflection. If you wish to mount one of our D-shaped mirrors, we recommend using one of our D-shaped mirror mounts.
The AD2T Adapter features internal SM1 threading and is designed to hold a Ø1" unmounted optic up to 0.37" (9.4 mm) thick with the included SM1RR retaining ring.b Alternatively, retaining rings can be used to hold this adapter in an SM2 lens tube. With a smooth outer diameter, the AD2T is especially well suited for mounting Ø1" wave plates into Ø2" mounts.
The SM2B2 features external SM2 threads and a Ø1.5" bore through the length of the part. A 4-40 setscrew secures Ø1.5" objects and allows them to be mounted in our SM2 Lens Tubes and SM2-compatible mounts. The SM2B2 adapter is designed to mount many of Thorlabs' isolators into SM2-threaded components.
These externally SM2-threaded adapters are designed to mount optics between Ø30 mm and Ø48 mm in internally SM2-threaded components, such as our Ø2" Lens Tubes or Ø2" Optic Mounts. Each mount features external SM2 threads and an internally threaded central bore (see the table below for thread specifications). Two retaining rings are included for securing optics in the adapter.