Optical Component Thread Adapters

SM05-to-SM1 Adapter Series

• Couples SM05 and SM1 internal/external threads for cross-compatibility
• CSM05-1: SM05 male thread to SM1 male thread
• CSM05-1B: SM05 male thread to SM1 female thread
• CD12.5-SM1B: Ø12.5 mm counterbore to SM1 female thread
• Enables connectivity across different tube sizes and components (e.g., 0.5″ ↔ 1″)

These adapters are designed for flexible connection between SM05 (0.535″-40) and SM1 (1.035″-40) threaded systems, including male-to-female and male-to-male configurations. They're ideal for adapting optical assemblies across size standards and allow quick configuration changes between Ø12.7 mm and Ø25.4 mm components.

Model	Dimensions (Ø × L, mm)	Thread Type	Weight	Material
CSM05-1	Ø30.5 × 8.0	SM05 male – SM1 male	6.5 g	7075 aluminum
CSM05-1B	Ø30.5 × 7.0	SM05 male – SM1 female	3.6 g	7075 aluminum
CD12.5-SM1B	Ø30.5 × 10.5	Ø12.7 mm bore – SM1 female	3.6 g	7075 aluminum
SM05-SM1	Ø30.5 × 8.7	SM05 male – SM1 male (alternative design)	7.9 g	7075 aluminum

 

SCF1 Series SM1 Lens Tube Flexure Sleeve Coupler

• Flexible clamping sleeve design for secure coupling
• Compatible with Ø1″ lens tubes, extension tubes, or other Ø1.2″ cylindrical components
• Available in multiple lengths

The SCF1 series coupling sleeves use a flexible clamping mechanism to securely fasten Ø1″ lens tubes, extension tubes, or any cylindrical parts with an outer diameter of Ø1.2″ (30.54 mm). The design ensures stable and adjustable coupling in various optical setups.

Model	Dimensions (Ø × L, mm)	Mounting Inner Diameter	Weight	Material
SCF1-05	Ø37.08 mm × 12.7 mm	Ø30.54 mm	11.6 g	7075 Aluminum
SCF1-1	Ø37.08 mm × 25.4 mm	Ø30.54 mm	23.1 g	7075 Aluminum
SCF1-3	Ø37.08 mm × 76.2 mm	Ø30.54 mm	69.2 g	7075 Aluminum

 

SCR Series Slip Ring

• Positioning holes and locking screws for stable clamping of lens tubes
• Compatible with standard SM05, SM1, and SM2 lens tubes
• Includes M4 tapped hole for mounting onto Ø12 mm rods

The SCR series sleeve clamps are used to securely mount lens tubes onto breadboards or platform-mounted lens tube holders. These clamps support various tube diameters including Ø1/2″ (SM05), Ø1″ (SM1), and Ø2″ (SM2), enabling stable and adjustable setups for optical systems.

Model	Dimensions (L × W × H, mm)	Center Bore Diameter	Thread Type	Weight	Material
SCR05	30.5 mm × 22.9 mm × 10.2 mm	Ø17.9 mm	M4 × 1 location	10.0 g	7075 Aluminum
SCR1	46.5 mm × 35.6 mm × 10.2 mm	Ø30.6 mm	M4 × 1 location	20.0 g	7075 Aluminum
SCR2	75.6 mm × 63.5 mm × 12.7 mm	Ø56.0 mm	M4 × 1 location	58.6 g	7075 Aluminum

 

RMS Thread Adapter Series

• WJ4/5-32 (M20.31 × 0.706) standard
• Enables integration between RMS-threaded components and other standard thread types
• Compatible with SM1, C-Mount, microscope objectives, and other systems
• Available in both internal and external RMS thread configurations

RMS (Royal Microscopical Society) threads are commonly used for mounting microscope objectives in optical assemblies. This adapter series allows you to seamlessly convert between RMS threads and other standard types such as SM1, C-Mount, M25×0.75, and M27×0.75. Both internal and external RMS thread versions are available to suit different mounting requirements.

Model	Thread Type	Weight	Material
SM1-RMS	SM1 External Thread ↔ RMS Internal Thread	2.7 g	7075 Aluminum
C-RMS	C-Mount External Thread ↔ RMS Internal Thread	2.0 g	7075 Aluminum
RMS-25	RMS External Thread ↔ M25×0.75 Internal Thread	3.3 g	7075 Aluminum
RMS-27	RMS External Thread ↔ M27×0.75 Internal Thread	3.4 g	7075 Aluminum

 

CSM1-1 Series – SM1 Internal Thread Coupling Adapters

• External-threaded adapter for connecting lens tubes with internal threads
• SM1 (1.035"-40) external thread body
• Includes 1 removable locking ring to secure components after alignment
• One end features a short 3.5 mm thread segment
• The other end offers longer thread segment options for positional and angular flexibility

These adapters are designed to connect two SM1 internal-threaded lens tubes. The short-thread side provides a fixed insertion depth, while the long-thread side (with various length options) allows adjustable positioning and optimal coupling.

Model	Dimensions (Ø × L)	Thread Type	Thread Lengths (short/long)	Weight	Material
CSM1-1-12	Ø31.8 × 19.5 mm	SM1 (1.035"-40) external	3.5 mm / 12 mm	10.7 g	7075 Aluminum
CSM1-1-24	Ø31.8 × 31.5 mm	SM1 (1.035"-40) external	3.5 mm / 24 mm	14.0 g	7075 Aluminum
CSM1-1-48	Ø31.8 × 55.5 mm	SM1 (1.035"-40) external	3.5 mm / 48 mm	20.9 g	7075 Aluminum

 

SM1-T Series – Full-Thread Coupling Adapters for Lens Tubes

• SM1 (1.035”-40) full-threaded external connector
• Used to join two lens tubes with internal SM1 threads
• Locking rings provide mechanical stops along the thread
• Available in multiple lengths

The SM1-T series adapters are designed to connect two SM1 internally threaded lens tubes. Each adapter features a fully threaded external body to allow precise positioning and angular alignment of the connected components. Adjusting the thread direction will also adjust the total assembly length.

Model	Thread Type	Inner Diameter	Thread Length (mm)	Included Lock Rings	Weight	Material
SM1-T025	SM1 (1.035”-40) external	Ø23 mm	6.35 mm	None	1.7 g	7075 Aluminum
SM1-T05	SM1 (1.035”-40) external	Ø23 mm	12.7 mm	1	6.2 g	7075 Aluminum
SM1-T1	SM1 (1.035”-40) external	Ø23 mm	25.4 mm	2	12.3 g	7075 Aluminum
SM1-T2	SM1 (1.035”-40) external	Ø23 mm	50.8 mm	2	20.0 g	7075 Aluminum

 

CSM Series – Threaded Adapters for SM1 / SM2 Lens Tube Connections

• Threaded adapters for connecting lens tubes to other optomechanical components
• Includes SM1 (1.035"-40) and SM2 (2.035"-40) thread combinations
• Adjustable length for optimal positioning and alignment
• Most CSM models include a locking ring for securing components after adjustment
• Compact models like SM1-SM2B and SM2-SM1B do not include locking rings

These threaded adapters are designed to interface SM1 and SM2 internal/external threaded components. They offer flexible, modular connections for complex optical assemblies.

Model	Dimensions (Ø × L)	Thread Type Description	Weight
CSM1-1-12	Ø31.7 × 19.4 mm	External SM1 (3.5 mm) + External SM1 (12 mm)	10.0 g
CSM2-1	Ø56.0 × 18.0 mm	External SM2 (3.0 mm) + External SM1 (10.3 mm)	25.0 g
CSM2-1B	Ø56.0 × 14.8 mm	External SM2 (10.3 mm) + Internal SM1 (3.1 mm)	30.0 g
CSM2-2	Ø56.0 × 23.9 mm	External SM2 (3.0 mm) + Internal SM2 (17.9 mm)	29.5 g
SM1-SM2B	Ø55.9 × 7.4 mm	External SM1 (3.0 mm) + Internal SM2 (2.5 mm)	7.1 g
SM2-SM1B	Ø51.7 × 5.1 mm	External SM2 (5.1 mm) + Internal SM1 (5.1 mm)	28.3 g

 

C-Mount to SM1/SM2 Thread Adapters

• Converts C-Mount (1.00"-32) threads to SM1 or SM2 internal/external threads
• Enables connectivity between cameras, lenses, and SM1/SM2 lens tube systems
• Compatible with a wide range of imaging components including extension tubes, lens barrels, and light shields

These C-Mount thread adapters (also known as C-mount converters) allow integration of camera systems with standard lens tube optics. By using a DSLR or industrial camera mount, these adapters enable direct connection to threaded tube systems for modular assembly.

Model	Dimensions (Ø × L)	Thread Type	Weight
C-CSA	Ø30.6 × 7.9 mm	(external) C-Mount (1.00"-32) → SM1 (1.035"-40) (internal)	2.9 g
C-CSA2	Ø30.6 × 7.2 mm	(external) C-Mount (1.00"-32) → SM2 (2.035"-40) (external)	2.9 g
C-CSB2	Ø55.9 × 9.3 mm	(external) C-Mount (1.00"-32) → SM2 (1.035"-40) (internal)	30.6 g
CSA-C	Ø53.9 × 7.9 mm	(external) SM1 (1.035"-40) → C-Mount (1.00"-32) (internal)	7.1 g