Abstract: A multi-layer lens is disclosed which includes a plurality of dual-layer structures staked on top of one-another, wherein each dual-layer Ri of the plurality of dual-layers includes i) a first curable material having a height of ZLi cured at a predetermined curing level CA, and ii) a second curable material having a height of Zgi cured at a predetermined curing level CB.

Abstract: A method is provided of operating a back office facility of a restaurant to provide a food safety label for labeling of at least one raw food item received for the restaurant. The method comprises receiving delivery of raw food items from a vendor, converting a purchase order associated with the received raw food items from the vendor to an invoice, and printing a food safety label based upon quantity of raw food items indicated in the invoice. Another method is provided of operating a back office facility of a restaurant to provide a food safety label for labeling of at least one prep food item by the restaurant using raw food items. Still another method is provided of operating a back office facility of a restaurant to provide a nutrition facts label for labeling of at least one prep food item by the restaurant using raw food items.