apochromaticadj.n.

/ˌapəʊkrəʊˈmatɪk/

Etymology: < Greek ἀπό from, after achromatic adj. and n.

Epithet of an improved form of achromatic lens invented by Abbe. Also as n.: an apochromatic lens; in Photography further shortened to ˈapochroˌmat n. So apoˈchromatism n. apochromatic condition or quality.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses

power1673

refracting angle1676

resolution1831

depth of focus1852

astigmatism1859

aplanatism1869

apochromatism1887

covering power1895

coverage1936

asphericity1944

parfocality1955

the world > physical sensation > sight and vision > optical instruments > lens > [adjective] > types of lenses

convex?a1560

planoconvex1665

concavo-convex1677

convexo-concave1693

strong1732

aplanatic1799

periscopic1803

omphaloptic1819

polyzonal1823

shallow1837

first-order1846

periscopical1846

orthoscopic1853

rectilinear1874

overcorrected1875

sphero-cylindrical1881

wide-aperture1882

afocal1887

apochromatic1887

anastigmatic1890

telecentric1892

photovisual1899

aspherical1922

aspheric1923

multifocal1928

plano1944

demagnifying1959

society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [noun] > lens > types of

portrait lens1852

short-focus lens1862

periscope1865

rectilinear1867

pantoscope1868

wide-angle1868

long lens1876

apochromatic1887

anastigmat1890

concentric lens1890

euryscope1890

landscape lens1890

rectigraph1890

symmetrical1890

concentric1893

telelens1893

telephoto1894

monocle1897

stigmat1901

stigmatic1902

Long Tom1910

zoom lens1932

Panavision1955

teleconverter1959

macro lens1961

zoom1969

macro1971

1887 Jrnl. Royal Microsc. Soc. 7 23 In the new objectives..the elimination of these errors realizes an achromatism of higher order than has hitherto been attained. The objectives of this system may be therefore distinguished from achromatic lenses in the old sense of the word by the term apochromatism, and may be called apochromatic objectives.

1890 Internat. Ann. Anthonys Photogr. Bull. 318 The apochromatic objectives give absolutely the same photographic image as that seen upon the screen.

1890 Internat. Ann. Anthonys Photogr. Bull. 319 In 1884, before the apochromatics were brought out.

1901 Photogr. Jrnl. July 324 Remarkably perfect microscope objectives—the Abbe apochromats.

1902 Encycl. Brit. XXXI. 695/1 Fritsch, of Vienna, in 1888, constructed a wide-angle ‘Apochromat’ of the symmetrical aplanatic type.

1939 W. Clark Photogr. by Infrared xvi. 342 The ‘apochromatic’ lenses... Apochromats of low aperture are..sometimes used for photoengraving and colour photographic cameras.

This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2022).

单词	apochromatic
释义	apochromaticadj.n. /ˌapəʊkrəʊˈmatɪk/ Etymology: < Greek ἀπό from, after achromatic adj. and n. Epithet of an improved form of achromatic lens invented by Abbe. Also as n.: an apochromatic lens; in Photography further shortened to ˈapochroˌmat n. So apoˈchromatism n. apochromatic condition or quality. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses power1673 refracting angle1676 resolution1831 depth of focus1852 astigmatism1859 aplanatism1869 apochromatism1887 covering power1895 coverage1936 asphericity1944 parfocality1955 the world > physical sensation > sight and vision > optical instruments > lens > [adjective] > types of lenses convex?a1560 planoconvex1665 concavo-convex1677 convexo-concave1693 strong1732 aplanatic1799 periscopic1803 omphaloptic1819 polyzonal1823 shallow1837 first-order1846 periscopical1846 orthoscopic1853 rectilinear1874 overcorrected1875 sphero-cylindrical1881 wide-aperture1882 afocal1887 apochromatic1887 anastigmatic1890 telecentric1892 photovisual1899 aspherical1922 aspheric1923 multifocal1928 plano1944 demagnifying1959 society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [noun] > lens > types of portrait lens1852 short-focus lens1862 periscope1865 rectilinear1867 pantoscope1868 wide-angle1868 long lens1876 apochromatic1887 anastigmat1890 concentric lens1890 euryscope1890 landscape lens1890 rectigraph1890 symmetrical1890 concentric1893 telelens1893 telephoto1894 monocle1897 stigmat1901 stigmatic1902 Long Tom1910 zoom lens1932 Panavision1955 teleconverter1959 macro lens1961 zoom1969 macro1971 1887 Jrnl. Royal Microsc. Soc. 7 23 In the new objectives..the elimination of these errors realizes an achromatism of higher order than has hitherto been attained. The objectives of this system may be therefore distinguished from achromatic lenses in the old sense of the word by the term apochromatism, and may be called apochromatic objectives. 1890 Internat. Ann. Anthonys Photogr. Bull. 318 The apochromatic objectives give absolutely the same photographic image as that seen upon the screen. 1890 Internat. Ann. Anthonys Photogr. Bull. 319 In 1884, before the apochromatics were brought out. 1901 Photogr. Jrnl. July 324 Remarkably perfect microscope objectives—the Abbe apochromats. 1902 Encycl. Brit. XXXI. 695/1 Fritsch, of Vienna, in 1888, constructed a wide-angle ‘Apochromat’ of the symmetrical aplanatic type. 1939 W. Clark Photogr. by Infrared xvi. 342 The ‘apochromatic’ lenses... Apochromats of low aperture are..sometimes used for photoengraving and colour photographic cameras. This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2022). < adj.n.1887
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