Abstract: A portable lighting system for single-handed operation includes abase for supporting the portable lighting system, a light source positioned on the base, a traveler having a key member attached to a rotating shaft mechanism extending from the traveler, and a frame connected to the base and the traveler and enclosing the light source. The frame includes a plurality of flexible ribs attached to the base at a first end and to the traveler at a second end, a latch plate having a key opening for engaging the key member and spaced a distance from the traveler, and at least one guide track connected between the traveler and the latch plate. The traveler is movable along the guide member from a starting position toward the latch plate causing the flexible ribs to bend outwardly and the key member is configured to enter the key opening and rotate via the rotating shaft mechanism to lock the traveler from returning to the starting position on the guide track. This configures the lighting system for use.