Good, clear plastic lens. Super cheap. What more can be said? Unfortunately the ones I received are double-convex! I required a plano-convex lens, so I can't use this for the project I bought it for. The previous reviewer received plano-convex lenses, and the photos also show plano-convex lenses, so ... Read more
8 mm lens can be used to extend the optical sensor components such as IR transcievers, LDRs or photodiodes and photo transistors. High quality clear plastic manufacturing. One side is convex while the other side is flat. Hard to handle due to its small size If you need to increase detection range in ... Read more
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