Vocabulary Entry

fresnel

|noun

noun

A type of lens that uses a series of concentric grooves to focus light, named after the French physicist Augustin-Jean Fresnel.

Example Sentences

"The lighthouse used a Fresnel lens to shine its light across the sea."

"Fresnel lenses are commonly used in overhead projectors and spotlights."

"Engineers developed a new type of Fresnel lens to improve solar energy efficiency."