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61 симметричный ахромат
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62 Achromat
Achromat m achromatic lens, achromatDeutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > Achromat
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63 achromatische Linse
Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > achromatische Linse
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64 ahromatično sočivo
• achromat; achromatic lens -
65 lente acromática
f. & m.achromatic lens. -
66 lente acromático
f. & m.achromatic lens. -
67 ахромат
м. achromatic lens -
68 Dancer, John Benjamin
SUBJECT AREA: Photography, film and optics[br]b. 1812 Englandd. 1887 England[br]English instrument maker and photographer, pioneer of microphotography.[br]The son of a scientific instrument maker, Dancer was educated privately in Liverpool, where from 1817 his father practised his trade. John Benjamin became a skilled instrument maker in his own right, assisting in the family business until his father's death in 1835. He set up on his own in Liverpool in 1840 and in Manchester in 1841. In the course of his career Dancer made instruments for several of the leading scientists of the day, his clients including Brewster, Dalton and Joule.Dancer became interested in photography as soon as the new art was announced in 1839 and practised the processes of both Talbot and Daguerre. It was later claimed that as early as 1839 he used an achromatic lens combination to produce a minute image on a daguerreotype plate, arguably the world's first microphotograph and the precursor of modern microfilm. It was not until the introduction of Archer's wet-collodion process in 1851 that Dancer was able to perfect the technique however. He went on to market a long series of microphotographs which proved extremely popular with both the public and contemporary photographers. It was examples of Dancer's microphotographs that prompted the French photographer Dagron to begin his work in the same field. In 1853 Dancer constructed a binocular stereoscopic camera, the first practicable instrument of its type. In an improved form it was patented and marketed in 1856.Dancer also made important contributions to the magic lantern. He was the first to suggest the use of limelight as an illuminant, pioneered the use of photographic lantern slides and devised an ingenious means of switching gas from one lantern illuminant to another to produce what were known as dissolving views. He was a resourceful innovator in other fields of instrumentation and suggested several other minor improvements to scientific apparatus before his working life was sadly terminated by the loss of his sight.[br]Further ReadingAnon., 1973, "John Benjamin Dancer, originator of microphotography", British Journal of Photography (16 February): 139–41.H.Gernsheim and A.Gernsheim, 1969, The History of Photography, rev. edn, London.JW -
69 Achromat
m PRINT achromatic lens -
70 achromatische Linse
f PRINT achromatic lensDeutsch-Englisch Wörterbuch für Informatik > achromatische Linse
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71 Achromat-Linse
fachromatic lens -
72 контактный ахромат
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73 хроматическая аберрация
[lang name="Russian"]линза, устраняющая хроматическую аберрацию — achromatic lens
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74 контактный ахромат
Русско-английский новый политехнический словарь > контактный ахромат
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75 хроматическая аберрация
линза, устраняющая хроматическую аберрацию — achromatic lens
Русско-английский новый политехнический словарь > хроматическая аберрация
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76 ахроматический
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77 ахроматический
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78 ахроматический
Русско-английский военно-политический словарь > ахроматический
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79 ахроматическая лупа
Русско-английский политехнический словарь > ахроматическая лупа
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80 Steinheil, Carl August von
[br]b. 1801 Roppoltsweiler, Alsaced. 1870 Munich, Germany[br]German physicist, founder of electromagnetic telegraphy in Austria, and photographic innovator and lens designer.[br]Steinheil studied under Gauss at Göttingen and Bessel at Königsberg before jointing his parents at Munich. There he concentrated on optics before being appointed Professor of Physics and Mathematics at the University of Munich in 1832. Immediately after the announcement of the first practicable photographic processes in 1839, he began experiments on photography in association with another professor at the University, Franz von Kobell. Steinheil is reputed to have made the first daguerreotypes in Germany; he certainly constructed several cameras of original design and suggested minor improvements to the daguerreotype process. In 1849 he was employed by the Austrian Government as Head of the Department of Telegraphy in the Ministry of Commerce. Electromagnetic telegraphy was an area in which Steinheil had worked for several years previously, and he was now appointed to supervise the installation of a working telegraphic system for the Austrian monarchy. He is considered to be the founder of electromagnetic telegraphy in Austria and went on to perform a similar role in Switzerland.Steinheil's son, Hugo Adolph, was educated in Munich and Augsburg but moved to Austria to be with his parents in 1850. Adolph completed his studies in Vienna and was appointed to the Telegraph Department, headed by his father, in 1851. Adolph returned to Munich in 1852, however, to concentrate on the study of optics. In 1855 the father and son established the optical workshop which was later to become the distinguished lens-manufacturing company C.A. Steinheil Söhne. At first the business confined itself almost entirely to astronomical optics, but in 1865 the two men took out a joint patent for a wide-angle photographic lens claimed to be free of distortion. The lens, called the "periscopic", was not in fact free from flare and not achromatic, although it enjoyed some reputation at the time. Much more important was the achromatic development of this lens that was introduced in 1866 and called the "Aplanet"; almost simultaneously a similar lens, the "Rapid Rentilinear", was introduced by Dallmeyer in England, and for many years lenses of this type were fitted as the standard objective on most photographic cameras. During 1866 the elder Steinheil relinquished his interest in lens manufacturing, and control of the business passed to Adolph, with administrative and financial affairs being looked after by another son, Edward. After Carl Steinheil's death Adolph continued to design and market a series of high-quality photographic lenses until his own death.[br]Further ReadingJ.M.Eder, 1945, History of Photography, trans. E.Epstean, New York (a general account of the Steinheils's work).Most accounts of photographic lens history will give details of the Steinheils's more important work. See, for example, Chapman Jones, 1904, Science and Practice of Photography, 4th edn, London: and Rudolf Kingslake, 1989, A History of the Photographic Lens, Boston.JWBiographical history of technology > Steinheil, Carl August von
См. также в других словарях:
Achromatic lens — Achromatic Ach ro*mat ic, a. [Gr. ? colorless; a priv. + ?, ?, color: cf. F. achromatique.] 1. (Opt.) Free from color; transmitting light without decomposing it into its primary colors. [1913 Webster] 2. (Biol.) Uncolored; not absorbing color… … The Collaborative International Dictionary of English
achromatic lens — n a compound lens made by combining lenses of different glasses (as flint glass and crown glass) with different focal powers so that the light emerging from the lens forms an image almost free from unwanted colors * * * a lens corrected for… … Medical dictionary
Achromatic lens — An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration. Achromatic lenses are corrected to bring two wavelengths (typically red and blue) into focus in the same plane.The most common… … Wikipedia
achromatic lens — achromatinis objektyvas statusas T sritis fizika atitikmenys: angl. achromat; achromatic lens; achromatic objective vok. Achromat, m; achromatisches Objektiv, n rus. ахромат, m; ахроматический объектив, m pranc. achromat, m; objectif achromatique … Fizikos terminų žodynas
achromatic lens — achromatinis lęšis statusas T sritis Standartizacija ir metrologija apibrėžtis Lęšių sistema, kurios dviejų bangų ilgių, t. y. raudonos ir mėlynos spalvos, vaizdai yra tame pačiame optinės ašies taške. Sistemą sudaro iš skirtingo stiklo padaryti… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
achromatic lens — achromatinis lęšis statusas T sritis fizika atitikmenys: angl. achromatic lens vok. achromatische Linse, f rus. ахроматическая линза, f pranc. lentille achromatique, f … Fizikos terminų žodynas
achromatic lens — lens composed usually of two separate lenses used to produce images free of chromatic aberrations … English contemporary dictionary
achromatic lens — noun Date: circa 1864 a lens made by combining lenses of different glasses having different focal powers so that the light emerging from the lens forms an image practically free of chromatic aberration … New Collegiate Dictionary
achromatic lens — noun a compound lens system that forms an image free from chromatic aberration • Hypernyms: ↑compound lens … Useful english dictionary
achromatic lens — Optics. a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light. Also… … Universalium
achromatic lens — noun A lens generally composed of two separate lenses, one convex and one concave and generally of different materials, in such a way that the chromatic aberration produced by one is corrected by the other … Wiktionary