Low-pressure mercury discharge lamps with a tubular 16 mm envelope. This TL miniature lamp (tube diameter 16 mm) is a compact lamp that enables system miniaturization and offers the possibility of operation on low-voltage DC supply. It is ideal for applications where better color rendering and efficacy (than standard colors) are required and where space is limited, such as in halls, staircase lighting in apartment buildings, built into furniture, mirror and cupboard lighting, signage, and emergency lighting.