50mm lens holder

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This is a versatile holder designed specifically for a 50mm diameter lens. A semi-circular notch measuring 3 mm wide precisely grips the edge of the lens. To ensure precise alignment, simply modify the SCAD file according to your desired lens and mounting hole dimensions. Lens holders prove invaluable in demonstrations and complex optical experiments. The exact lens featured in the accompanying images is "50mm Optical Glass Lens Collimator Plano-Convex for LED Projector," available as Ebay item 161126916191. Upon printing, the notch dimension unexpectedly measured 2.7 mm wide, approximately 0.3 mm narrower than the required 3.0 mm lens edge clearance. As a result, it was necessary to delicately enlarge the notch using a knife point. Considering printer accuracy may vary significantly, users are advised to generously modify the SCAD file and extend the notch accordingly.