Fresnel lenses Start with conventional lens
{"Image DocumentName": "Fresnel lenses Start with conventional lens", "Image ImageDescription": "Constrain optical thickness to be modulo l. Advantage -- thinner and lighter. Fresnel vs conventional lens.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}