The Thorlabs KGM40 is a Kinematic Grating Mount Adapter designed for mounting rectangular optics or gratings within Ø1″ (25.4 mm) mirror mounts — particularly Thorlabs’ POLARIS‑K1E and other front-loading, unthreaded mirror mounts.
⚙️ Key Features
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Compatibility: Works with all Ø1″ mirror mounts (front‑loading, unthreaded types) according to Thorlabs’ standard interface.
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Grating Size Range: Specifically designed for optic heights between 20 mm and 40 mm; for optics exactly 20 mm tall, the KGM40 is the correct model.
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Clamping Mechanism: Uses a spring‑loaded 3‑point kinematic mount (two lower contact lines and a top flat spring), along with adjustable clamps and a nylon‑tipped locking setscrew for secure positioning.
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Thickness Accommodation: Accepts gratings or mirrors with thicknesses from roughly 5 mm to 10 mm.
| Weight | 1 lbs |
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| Dimensions | 6 × 3 × 2 in |
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