Diameter: 100-360 mm Focal Lengths: 70, 80, 100, 120, 150, 185, 200, 220 mm Thickness: 2 mm Magnification: 3x Material: Optical plastic This lens is designed for use with plane magnifiers, solar energy concentrators, flashlight lamps, and stage lamps. Key benefits - 3x magnification provides clearer detail for inspection, alignment, and projection tasks. - Thin 2 mm thickness allows easy integration into existing optical setups without adding bulk. - Optical plastic construction delivers lightweight and durable performance suitable for common applications. - Wide diameter range and multiple focal lengths offer flexibility to fit different equipment and projects. Design and usability - Professional and practical design with an attractive appearance. - Easy to carry and easy to use in field and lab environments. Use scenarios - Plane magnifier applications: use the lens to enlarge viewing area for detailed inspection of materials or text. - Solar energy concentrator demonstrations: apply magnification in the focal area to study light paths and intensity. - Lighting equipment: incorporate into flashlight or stage lamps to modify or enhance the illumination setup.