Dollond
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| Portrait of Peter Dollond image by Internet Archive Book Images (Image rights) |
Dollond was a UK-based optical and mathematical instrument company, founded in 1750 in London by John Dollond (1706-1761) and his son Peter (1730-1820). John Dollond invented one of the first achromatic lenses - patented in 1758 (if not The First, although optician George Bass seems to have made achromats, perhaps from 1729[1]). This lens was used for the first achromatic telescope; the Dollonds went on to make several more inventions in achromatic lenses, telescopes and heliometers. Peter's nephew George Dollond (1774-1852) took over the company in 1819.
Dollond's had sold Cameras Lucidae and Cameras Obscurae in the 18th and 19th Century, and sold film cameras in the early 20th.
- Dollond Owl 2¼x3¼ inch on 120 film: apparently a re-badged Ensign Carbine[2]
The company still exists as Dollond and Aitchison opticians.
Notes
- ↑ Sphaera article at the Museum of the History of Science, University of Oxford
- ↑ Owl No. 3 with 10.5cm f/6.3 Lukos Anastigmat and Trichro shutter, at Red Bellows: specification and pictures of the camera; also shows an advertisement for the Owl No. 2.
Sources
- Encyclopædia Britannica, 2008, Encyclopædia Britannica 2006 Ultimate Reference Suite;
articles on Dollond, George, Dollond, John and Dollond, Peter.
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