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trifocal lenses

eyeglass lens with three distinct optical powers
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trifocal lenses

Summary

trifocal lenses ranks in the top 2% of general entities by monthly Wikipedia readership (39 views/month).[1]

Key Facts

  • trifocal lenses is credited with the discovery of John Isaac Hawkins[2].
  • trifocal lenses's subclass of is recorded as lens[3].
  • trifocal lenses's time of discovery or invention is recorded as +1827-00-00T00:00:00Z[4].
  • trifocal lenses's Freebase ID is recorded as /m/036sth[5].
  • trifocal lenses's Microsoft Academic ID is recorded as 2776569707[6].

Body

Works and Contributions

trifocal lenses is credited with the discovery of John Isaac Hawkins[2].

Why It Matters

trifocal lenses ranks in the top 2% of general entities by monthly Wikipedia readership (39 views/month).[1]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . books.google.com. Retrieved . books.google.com. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). trifocal lenses. Retrieved April 10, 2026, from https://4ort.xyz/entity/trifocal-lenses
MLA “trifocal lenses.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/trifocal-lenses.
BibTeX @misc{4ortxyz_trifocal-lenses_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{trifocal lenses}}, year = {2026}, url = {https://4ort.xyz/entity/trifocal-lenses}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): trifocal lenses — https://4ort.xyz/entity/trifocal-lenses (retrieved 2026-04-10)

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