Hintergrundlichtgleichmäßigkeit

It seems the term is truncated: "Hintergrundlic...". Could you confirm the exact topic you want? For example, you might mean:

- Hintergrundlicht (background lighting) used in photography, cinema, or display technology

- Hintergrundlinie (background line) in data visualization or maps

- another term ending similarly

Please specify the exact term or provide a brief scope (historical overview, technical details, notable applications, etc.). Once confirmed, I’ll write a concise, neutral wiki-style article under 300 words.