Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optics,1pcs(D40mmxFL40mm)

Precision threaded concentric grooves on both sides ensure uniform light refraction, ideal for adjusting beam angle and output spread in LED lamps, stage lights, flashlights, and fishing lights. Compatible with DIY projectors and VR glasses—lightweight 2mm acrylic construction minimizes distortion while maintaining high clarity for immersive visual experiences. Enhance close-up inspection with 92% light transmittance—use as a magnifying lens to observe fine details in images, mechanical parts, or printed circuit boards. Versatile for optical experiments, research, and product prototyping—suitable for beam collimation, focal length testing, and light path calibration in educational or lab environments. Durable PMMA material withstands temperatures from -40°C to +80°C, ensuring reliable performance in varied environments without yellowing or warping over time.