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|name = John Henry Dallmeyer
|name = John Henry Dallmeyer
|image = Dallmeyer.png
|image = Dallmeyer.png
|image_size =
|caption = John Henry Dallmeyer
|caption = John Henry Dallmeyer
|birth_name =
|birth_name =
|birth_date = September 6, 1830
|birth_date = 6 September 1830
|birth_place = [[Loxten]], [[Westphalia]]
|birth_place = [[Loxten]], [[Westphalia]]
|death_date = December 30, 1883
|death_date = 30 December 1883 (aged 53)
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|occupation = [[optics|optician]]
|occupation = [[optics|optician]]
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|children = [[Thomas Rudolphus Dallmeyer]]
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}}'''John Henry Dallmeyer''' (September 6, 1830 – December 30, 1883), Anglo-German [[optics|optician]], was born at [[Loxten]], [[Westphalia]], the son of a landowner.
}}'''John Henry Dallmeyer''' (6 September 1830{{snd}}30 December 1883), Anglo-German [[optics|optician]], was born at [[Loxten]], [[Westphalia]], the son of a landowner.<ref name="EB1911">{{EB1911|inline=1|wstitle=Dallmeyer, John Henry|volume=7|pages=771-772}}</ref>


On leaving school at the age of sixteen he was apprenticed to an [[Osnabrück]] optician, and in 1851 he came to London, where he obtained work with an optician, W Hewitt, who shortly afterwards, with his workmen, entered the employment of Andrew Ross, a lens and telescope manufacturer.
On leaving school at the age of sixteen he was apprenticed to an [[Osnabrück]] optician, and in 1851 he came to London, where he obtained work with an optician, W Hewitt, who shortly afterwards, with his workmen, entered the employment of [[Ross (optics)|Andrew Ross]], a lens and telescope manufacturer.<ref name="EB1911"/>


Dallmeyer's position in this workshop appears to have been an unpleasant one, and led him to take, for a time, employment as French and German correspondent for a commercial firm. After a year he was, however, re-engaged by Ross as scientific adviser, and was entrusted with the testing and finishing of the highest class of optical apparatus. This appointment led to his marriage with Ross's second daughter, Hannah, and to the inheritance, at Ross's death (1859), of a third of his employer's large fortune and the telescope manufacturing portion of the business.
Dallmeyer's position in this workshop appears to have been an unpleasant one, and led him to take, for a time, employment as French and German correspondent for a commercial firm. After a year he was, however, re-engaged by Ross as scientific adviser, and was entrusted with the testing and finishing of the highest class of optical apparatus. This appointment led to his marriage with Ross's second daughter, Hannah, and to the inheritance, at Ross's death (1859), of a third of his employer's large fortune and the telescope manufacturing portion of the business.<ref name="EB1911"/>


Turning from astronomical work to the design and making of [[photographic lens design|photographic lens]]es, he introduced improvements in both portrait and landscape lenses, in object-glasses for the [[microscope]] and in condensers for the [[optical lantern]]. An important invention was the [[Rapid Rectilinear]] camera objective. In connexion with celestial photography he constructed photo-[[Solar_telescope|heliograph]]s for the Wilna observatory in 1863, for the [[Harvard College Observatory]] in 1864, and, in 1873, several for the British government.
Turning from astronomical work to the design and making of [[photographic lens design|photographic lens]]es, he introduced improvements in both portrait and landscape lenses, in object-glasses for the [[microscope]] and in condensers for the [[optical lantern]]. An important invention was the [[Rapid Rectilinear]] camera objective.<ref>{{Cite web |title=Sold - Antique brass lens Dallmeyer Rapid Rectilinear (UK, 1884) w/lens flange |url=https://www.photrio.com/forum/threads/antique-brass-lens-dallmeyer-rapid-rectilinear-uk-1884-w-lens-flange.194203/ |access-date=2023-01-30 |website=Photrio.com Photography Forums |date=14 September 2022 |language=en-US}}</ref> In connection with celestial photography he constructed photo-[[Solar telescope|heliograph]]s for the Wilna observatory in 1863, for the [[Harvard College Observatory]] in 1864, and, in 1873, several for the British government.<ref name="EB1911"/>


Dallmeyer's instruments achieved a wide success in Europe and America, taking the highest awards at various international exhibitions. The Russian government gave him the [[order of St Stanislaus]], and the French government made him chevalier of the [[Legion of Honour]].
Dallmeyer's instruments achieved a wide success in Europe and America, taking the highest awards at various international exhibitions. The Russian government gave him the [[order of St Stanislaus]], and the French government made him chevalier of the [[Legion of Honour]].<ref name="EB1911"/>


He was for many years upon the councils of both the [[Royal Astronomical Society]] and [[Royal Photographic Society]]. About 1880 he was advised to give up the personal supervision of his workshops, and to travel for his health, but he died on board ship, off the coast of New Zealand, on 30 December 1883.
He was for many years upon the councils of both the [[Royal Astronomical Society]] and [[Royal Photographic Society]]. About 1880 he was advised to give up the personal supervision of his workshops, and to travel for his health, but he died on board ship, off the coast of New Zealand, on 30 December 1883.<ref name="EB1911"/>


His second son, [[Thomas Rudolphus Dallmeyer]] assumed control of the business on the failure of his father's health.
His second son, [[Thomas Rudolphus Dallmeyer]] assumed control of the business on the failure of his father's health.<ref name="EB1911"/>

----
==References==
{{1911}}
{{reflist}}

==External links==
* {{Internet Archive author |sname=John Henry Dallmeyer}}

⚫
{{Authority control}}

{{Use dmy dates|date=March 2017}}

{{EB1911 article with no significant updates}}


⚫
{{Authority control|VIAF=31688592}}
{{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. -->
| NAME = Dallmeyer, John
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = Optician
| DATE OF BIRTH = September 6, 1830
| PLACE OF BIRTH = [[Loxten]], [[Westphalia]]
| DATE OF DEATH = December 30, 1883
| PLACE OF DEATH =
}}
{{DEFAULTSORT:Dallmeyer, John}}
{{DEFAULTSORT:Dallmeyer, John}}
[[Category:1830 births]]
[[Category:1830 births]]
[[Category:1883 deaths]]
[[Category:1883 deaths]]
[[Category:People from North Rhine-Westphalia]]
[[Category:People from Osnabrück (district)]]
[[Category:Lens designers]]
[[Category:Lens designers]]
[[Category:Lens manufacturers]]
[[Category:Lens manufacturers]]
[[Category:Scientific instrument makers]]
[[Category:German scientific instrument makers]]
[[Category:German emigrants to the United Kingdom]]

Latest revision as of 17:51, 18 January 2024

John Henry Dallmeyer
John Henry Dallmeyer
Born6 September 1830
Loxten, Westphalia
Died30 December 1883 (aged 53)
Occupationoptician
ChildrenThomas Rudolphus Dallmeyer

John Henry Dallmeyer (6 September 1830 – 30 December 1883), Anglo-German optician, was born at Loxten, Westphalia, the son of a landowner.[1]

On leaving school at the age of sixteen he was apprenticed to an Osnabrück optician, and in 1851 he came to London, where he obtained work with an optician, W Hewitt, who shortly afterwards, with his workmen, entered the employment of Andrew Ross, a lens and telescope manufacturer.[1]

Dallmeyer's position in this workshop appears to have been an unpleasant one, and led him to take, for a time, employment as French and German correspondent for a commercial firm. After a year he was, however, re-engaged by Ross as scientific adviser, and was entrusted with the testing and finishing of the highest class of optical apparatus. This appointment led to his marriage with Ross's second daughter, Hannah, and to the inheritance, at Ross's death (1859), of a third of his employer's large fortune and the telescope manufacturing portion of the business.[1]

Turning from astronomical work to the design and making of photographic lenses, he introduced improvements in both portrait and landscape lenses, in object-glasses for the microscope and in condensers for the optical lantern. An important invention was the Rapid Rectilinear camera objective.[2] In connection with celestial photography he constructed photo-heliographs for the Wilna observatory in 1863, for the Harvard College Observatory in 1864, and, in 1873, several for the British government.[1]

Dallmeyer's instruments achieved a wide success in Europe and America, taking the highest awards at various international exhibitions. The Russian government gave him the order of St Stanislaus, and the French government made him chevalier of the Legion of Honour.[1]

He was for many years upon the councils of both the Royal Astronomical Society and Royal Photographic Society. About 1880 he was advised to give up the personal supervision of his workshops, and to travel for his health, but he died on board ship, off the coast of New Zealand, on 30 December 1883.[1]

His second son, Thomas Rudolphus Dallmeyer assumed control of the business on the failure of his father's health.[1]

References[edit]

  1. ^ a b c d e f g  One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Dallmeyer, John Henry". Encyclopædia Britannica. Vol. 7 (11th ed.). Cambridge University Press. pp. 771–772.
  2. ^ "Sold - Antique brass lens Dallmeyer Rapid Rectilinear (UK, 1884) w/lens flange". Photrio.com Photography Forums. 14 September 2022. Retrieved 30 January 2023.

External links[edit]

Retrieved from "https://en.wikipedia.org/w/index.php?title=John_Henry_Dallmeyer&oldid=1196846129"