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| Coad | 670703 | Type | Fixed Lens Mount with U-Slot | |
| Optical Component Diameter (mm) | 50.80 | Optical Element Thickness (mm) | 7.70 | |
| Clear Aperture（mm） | 48.30 | Center Height (mm) | 34.50 | |
| Material | 6061-T6 Aluminum Alloy | Internal Thread Hole Specification | SM2 | |
| Bottom Threaded Hole Specifications | M4 | Cage Rod Mounting Method | Set Screw | |
| Surface Treatment | Black Anodized | Included Retaining Ring | SM2R x 2 |
LBTEK fixed lens mounts are designed for optical components with diameters of Ø12.7 mm, Ø25.4 mm, and Ø50.8 mm, secured with retaining rings. Multiple versions are available: the FLF series features internal threads with a lens mounting step and includes one retaining ring; the FLFT series has a through-threaded bore and comes with two retaining rings; and the FLFE series has internal and external threads for expandability, supplied with one retaining ring. The top includes a U-slot for mounting Ø6 mm cage rods, ensuring consistent optical axis height when connecting Ø12.7 mm and Ø25.4 mm lens mounts. The base includes an M4 threaded hole for easy connection to optical posts.
LBTEK fixed lens mounts are designed for Ø12.7 mm, Ø25.4 mm, and Ø50.8 mm optical components. The FLFT series features a through-threaded bore and comes with two retaining rings to secure the optics. The top U-slot allows Ø6 mm cage rods to be mounted, and the side is secured with a set screw. The base includes an M4 threaded hole for connection to optical posts.
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