Fresnel Lens for Shortest DIY Projector Focal Length 220mm India with step wise discontinuities between

with step wise discontinuities between them

We have thoroughly tested this 200W LED with our Heat sink in Indian weather conditions and found very successful

or temperature-sensitive switch

Focal Length : 220 mm

This LED is customized with latest high Lumin per Watt 45X45mil LED chip which are higher per each chip

Fresnel Lens for Shortest DIY Projector Focal Length 220mm India with step wise discontinuities betweenThe 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