A lighting apparatus includes a light source module and a power supply module. The system then permits aggregation of the orders, and netting of orders, generated by multiple investors at various times during the day for execution. Information is gathered from various sources across the Internet to determine pricing and publication options. A surface on the image side of the negative lens is a concave surface, and the negative lens has an Abbe’s number smaller than the Abbe’s number for the first positive lens and the second positive lens, and has a refractive index higher than a refractive index of the second positive lens. The open position is approximately 180\xb0 from the closed position.