... magnifying lens for Optics and Lighting1. Raw material of magnifying lens: Pyrex, Optical glass. Crystal glass2. Techniques of magnifying lens: by Molding, Grinding, Polishing3. Shape of magnifying lens ... quality of magnifying lens: clear and transparent, no mold marks, no inside bubble and dirts,5. Function of magnifying lens: magnifying lens for magnifier for Lighting and ...