# hyperradiant Fresnel lens

> obsolete Fresnel lens used in lighthouses

**Wikidata**: [Q5958548](https://www.wikidata.org/wiki/Q5958548)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hyperradiant_Fresnel_lens)  
**Source**: https://4ort.xyz/entity/hyperradiant-fresnel-lens