20-70mm Round PMMA Fresnel Lens Threaded Capacitor for LED Light Projector VR Optics 1pc(D42mmxFL50mm)

Precise, threaded concentric grooves on both sides ensure even light refraction and are ideal for adjusting the beam angle and output distribution in LED lamps, stage lights, flashlights and fishing lights. Compatible with DIY projectors and VR glasses - The lightweight 2mm acrylic construction minimises distortion while ensuring high clarity for immersive visual experiences. IMPROVE CLOSE INSPECTION WITH 92% LIGHT TRANSMANCITY - Use it as a magnifying lens to observe fine details in images, mechanical parts or circuit boards. Versatile for optical experiments, research and product prototyping - suitable for beam collimation, focal length testing and light path calibration in educational or laboratory environments. The durable PMMA material can withstand temperatures from -40°C to +80°C, ensuring reliable performance in different environments without yellowing or warping over time.