A lithophane is a thin plaque of translucent material, normally porcelain, which has been moulded to varying thickness, such that when lit from behind the different thicknesses show as different shades, forming an image. Only when lit from behind does the image display properly. They were invented in the 19th century and became very popular, typically for lampshades, nightlights, or to be hung on windows. They were often placed in metal holders with a candle behind them and used as a bedside lamp. As their popularity grew, such noted companies as Wedgwood and KPM produced lithophanes with domestic scenes, landscapes and religious imagery such as this plaque.

