Convex Plastic Lens with Edge [40mm Diameter] : ID 3917 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
How to make VIRTUAL REALITY lens using plastic bottle-convex/magnifying lens - YouTube
Tools: DIY Lens Spanner | Richard Haw's Classic Nikon Repair and Review
How to make magnifying lens with bottle - YouTube
Making lenses
Optical Part For 5PCS 35-49.3mm Optical Plastic Focal Length LED Plano Convex Lens DIY Condensing Lens (Diameter: 40mm F23mm) - - Amazon.com
General Cheap DIY Dry box for storing lenses - PentaxForums.com
One Small Step For Magnification, One Giant Leap For Home Lens Manufacturing | Hackaday
Dropshipping Diameter 580 Mm Focal Length 300 Mm Diy Plastic Optical Fresnel Lens - Lenses - AliExpress
DIY lenses and filters – 5 tips to get you started. - Hacking Photography
DIY photo filters with everyday objects - CNET
How to Make a Lens from Scratch (Like, Literally Rocks and Sand)
2PCS 40mm Optical PMMA Plastic Solar Fresnel Lens DIY Projector 3D VR Glass Lens | eBay
Video: Making a DIY lens using a disposable film camera: Digital Photography Review
Amazon.com: Optical Part For 2PCS Optical Plastic Solar Condensing Fresnel Lens DIY 7 Inch Projector Lentes Focal Length 185 120mm Concentrator Lenses (Diameter: Type C) : Electronics