noun
Meaning 1
The hollow cylindrical lens used in the Fresnel lantern.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: echelon lens
Antonyms: none provided
Phrase guide
Fresnel lens
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
Meaning 2
lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: lens, lense, lens system
History
Etymology
Named after French physicist and inventor Augustin-Jean Fresnel.
Across languages
Translations
1 source translations are retained for this English entry.
- Japanese: フレネルレンズ (Fureneru renzu) — lens used in Fresnel lantern