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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
LED Chip Dimension: 19mm X 11mm
gold wire which ensure it long life without degrading quickly
Magic Power Supply
1 X Fresnel Lens F220 mm
or temperature-sensitive switch
Fresnel Lens for Shortest DIY Projector Focal Length 220mm India LED Chip Dimension: 19mm XThe Fresnel lens reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. An ideal Fresnel lens would have infinitely many such sections. In each section, the overall thickness is decreased compared to an equivalent simple lens. This effectively divides the continuous surface of a standard lens into a set of surfaces of the same curvature, with step wise discontinuities
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