aplanaticadj.

/apləˈnatɪk/

Etymology: < Greek ἀπλάνητος free from error ( < ἀ privative + πλανᾶν to wander) + -ic suffix.

Free from aberration; spec. applied to a compound lens which is free from spherical aberration or divergence of rays of light from the focus.

ΘΚΠ

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

1799 W. Jones Adams's Lect. Nat. & Exper. Philos. (ed. 2) II. xxii. 531 As..[Blair] conceives that he has thus removed the aberration, he distinguishes his instrument by the term Aplanatic.

1867 J. Hogg Microscope (ed. 6) i. ii. 26 An ‘aplanatic doublet’ consisting of a double convex lens and a meniscus.

1869 J. Tyndall Notes 9 Lect. on Light §165 A spherical lens cannot be rendered aplanatic.

This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2021).

单词	aplanatic
释义	aplanaticadj. /apləˈnatɪk/ Etymology: < Greek ἀπλάνητος free from error ( < ἀ privative + πλανᾶν to wander) + -ic suffix. Free from aberration; spec. applied to a compound lens which is free from spherical aberration or divergence of rays of light from the focus. ΘΚΠ 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 1799 W. Jones Adams's Lect. Nat. & Exper. Philos. (ed. 2) II. xxii. 531 As..[Blair] conceives that he has thus removed the aberration, he distinguishes his instrument by the term Aplanatic. 1867 J. Hogg Microscope (ed. 6) i. ii. 26 An ‘aplanatic doublet’ consisting of a double convex lens and a meniscus. 1869 J. Tyndall Notes 9 Lect. on Light §165 A spherical lens cannot be rendered aplanatic. This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2021). < adj.1799
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