42mm Flat Convex Lens 75mm Focal Length 4X Magnifier, 2Pcs PMMA Acrylic Optical for Science Experiments

Precision Optical Performance: Each lens features a Flat convex devise with a 42mm diameter and 75mm focal length, delivering 4X magnification for clear, distortion-free image projection and observation in science experiments, VR headsets, or magnifying applications. Durable PMMA Material: Crafted from optical PMMA (acrylic) Reusableplastic, these lenses are lightweight, shatter-resistant, and offer excellent light transmission, making them a safer alternative to glass for educational and hobbyist use. Versatile DIY & Replacement Use: Ideal for building DIY projectors, telescopes, magnifying glasses, or as a replacement lens for VR headsets. The 42mm size fits standard lens holders and mounts for easy integration into your projects. Easy to Handle & Install: Smooth edges and a uniform thickness ensure safe handling during assembly. The lenses are ready to use out of the box, compatible with common lens frames, stands, or -printed mounts. Complete Set of 2: Package includes 2 identical Flat convex lenses, allowing you to create multi-lens optical systems, compare focal effects, or keep a spare for future experiments and repairs.