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Product Information:Material: borosilicate glassSize: diameter about 30/44/54/66mm/1.18/1.73/2.60inSpecification: about 30/44/54/66mm/1.18/1.73/2.60inWorking temperature: -50-220°Luminous angle: 5-60 degreesLight transmittance: more than 97% Light refractive index: 1.47Light angle: adjustable angle (the actual light angle can be obtained by adjusting the distance between the lens and the LED)Optical glass convex lens is suitable for LED spotlights, car lights, flashlights, and projection lamps. It is made of high borosilicate material with high temperature resistance. The angle can be adjusted by 10-80-90 degrees. It can be matched with various high-power LEDs. It enjoys uniform spot without black holes. shadow, dark area.Packing List: 1* Plano-convex glass lens
