A desk lamp is a portable light source designed to illuminate a workspace, typically placed on a desk or table. It provides focused lighting for tasks such as reading, writing, or studying, helping to reduce eye strain and improve visibility. Desk lamps come in various styles, sizes, and brightness levels, often featuring adjustable arms or shades for directing light. Most desk lamps use either incandescent, fluorescent, or LED bulbs, with LED lamps being the most energy-efficient option. Many models also include features like dimmers, color temperature adjustments, and built-in USB ports for charging devices, enhancing their functionality in modern workspaces.