# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/pierre-louis-guinand
# Generated: 2026-08-15T13:58:31.410Z

schema: https://schema.org/Person
url: "https://fame.am/person/pierre-louis-guinand"
name: "Pierre-Louis Guinand"
slug: "pierre-louis-guinand"
description: "Pierre-Louis Guinand (1748–1824) was a Swiss lens maker. who in the late 1700s came up with a breakthrough for making better quality and larger glass, and in time went on to teach a young Fraunhofer at Joseph von Utzschneider's (1763-1840) glassworks, and eventually started his own optical glass works. Guinand would supply glass for the Paris Observatory telescopes and also Cauchoix. He was a pioneer in the manufacture of optical glass for microscopes, telescopes, glasses and other optical instruments."
tagline: "Swiss lens maker (1748-1824)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/PierreLouisGuinand.jpg?width=1200"
gender: "male"
country:
  name: "Switzerland"
  isoCode: "CH"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1748-04-20"
deathDate: "1824-02-13"
livingStatus: "DECEASED"
scores:
  popularity:           40.58
  momentum:             12.96296296296296
  historical:           5.672354666666667
  currentAttention:     0
  sourceConfidence:     35
  profileCompleteness:  70
  trendDirection:       "RISING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://es.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/Pierre-Louis_Guinand"
    title: "Pierre-Louis Guinand"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q2797540"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump