planoadj.

Brit.

/ˈpleɪnəʊ/, U.S.

/ˈpleɪnoʊ/

Origin: Formed within English, by clipping or shortening. Etymons: planoconvex adj., planoconcave adj.

Etymology: < plano- (in planoconvex adj. and planoconcave adj.). Compare plano- comb. form¹.

Of a surface of a lens: plane, flat.

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

1944 C. Sheard in O. Glasser Med. Physics 837 In the case of a thick plano-convex lens, the light, after traversing the lens and on meeting the plano surface.., converges to F_P - t beyond that surface.

1962 L. S. Sasieni Princ. & Pract. Optical Dispensing x. 268 Many modern trial cases are made with plano-convex and plano-concave spheres... The powers are engraved sometimes on the plano side of the convex and on the concave side of the concave.

1997 Product News Network (Nexis) 1 Jan. Physically, the lens has the appearance of a plano/convex lens. A diffractive element is etched onto the plano side.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	plano
释义	planoadj. Brit. /ˈpleɪnəʊ/, U.S. /ˈpleɪnoʊ/ Origin: Formed within English, by clipping or shortening. Etymons: planoconvex adj., planoconcave adj. Etymology: < plano- (in planoconvex adj. and planoconcave adj.). Compare plano- comb. form¹. Of a surface of a lens: plane, flat. 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 1944 C. Sheard in O. Glasser Med. Physics 837 In the case of a thick plano-convex lens, the light, after traversing the lens and on meeting the plano surface.., converges to F_P - t beyond that surface. 1962 L. S. Sasieni Princ. & Pract. Optical Dispensing x. 268 Many modern trial cases are made with plano-convex and plano-concave spheres... The powers are engraved sometimes on the plano side of the convex and on the concave side of the concave. 1997 Product News Network (Nexis) 1 Jan. Physically, the lens has the appearance of a plano/convex lens. A diffractive element is etched onto the plano side. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). > see also also refers to : plano-comb. form¹ also refers to : plano-comb. form² < adj.1944 see also
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planoadj.

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