FL28-120 Round Fresnel Lens 20-100mm PMMA Acrylic Condenser for LED Spotlight DIY Projector VR,1pcs(70mmx60mm-01)

High-precision threaded concentric grooves (0.3mm pitch, 0.5mm for 100mm) ensure uniform light refraction and sharp for optical experiments or imaging. 92% light transmittance with PMMA/acrylic material delivers bright output; operates reliably from -40°C to +80°C for versatile indoor and outdoor use. Available in 10 diameters (20–100mm) with 2mm thickness; choose the exact size to match your LED module, stage light, flashlight, or custom optical rig. Ideal for DIY projector builds, VR headset prototypes, magnifying detail inspection, or adjusting beam angle in lamps and lanterns without chromatic aberration. Smooth threaded edge and flat profile allow easy mounting in holders, brackets, or -printed frames; one piece per order for project-based testing.