ultraviolet filter

noun

Photography.

1. a filter used on a lens to absorb ultraviolet radiation that may impart an undesirable blue cast to a photograph.

Example Sentences

The study’s lead author Imane Laraba, also a microbiologist at the Agricultural Research Service, used an ultraviolet filter to photograph F. xyrophilum pseudoflowers that Wurdack collected in 2010 and 2012.

Read more on Scientific American

The couple are awake by 6:30 a.m. to ensure that the municipal supply is running, and they use an ultraviolet filter to purify water intended for drinking or cooking because contamination is constant.

Read more on Time Magazine Archive