A lantern is a portable lighting device used to illuminate broad areas. Lanterns may be used for signaling, or as general light sources for camping. Dim varieties are often used for decoration.
The term "lantern" is also used more generically to mean a 'light source' or the enclosure for a light source, i.e., the housing for the lamp and lens -- that is the top section -- of a lighthouse.
The simplest technology used is the candle lantern. Candles give only a weak light, and must be protected from wind to prevent from flickering or complete extinguishment. A typical candle lantern is a metal box or cylinder with glass side panels and an opening or ventilated cover on the top.
Decorative lanterns exist in a wide range of designs. Some hang from buildings, while others are placed on or just above the ground. Paper lanterns occur in societies around the world. Modern varieties often place an electric light in a decorative glass case.
The ancient Chinese sometimes captured fireflies in transparent or semi-transparent containers and used them as (short-term) lanterns. Raise the Red Lantern, a Chinese film, prominently features lanterns as a motif.
Use of fireflies in transparent containers was also a widespread practice in ancient India. But since these were short term solutions, the use of fire torches was more prevalent.
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