orthoscopicadj.n.

Brit.

/ˌɔːθəˈskɒpɪk/, U.S.

/ˌɔrθoʊˈskɑpɪk/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: ortho- comb. form, -scopic comb. form.

Etymology: < ortho- comb. form + -scopic comb. form, after German orthoskopisch (1849 or earlier).

A. adj.

Having or producing normal vision; yielding an image free from optical distortion; spec. of binocular vision: without the reversal of convexity and concavity produced by pseudoscopic instruments. orthoscopic eyepiece n. Optics a kind of eyepiece, typically consisting of a planoconvex eye lens with a triplet field lens, giving a high-quality image.

ΘΚΠ

the world > physical sensation > sight and vision > types of vision > [adjective] > normal or correct

orthoscopic1853

twenty-twenty1875

orthoptic1886

orthophoric1888

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

1853 Q. Jrnl. Microsc. Sci. 1 305 To produce orthoscopic binocular vision, simple, not erecting eye-pieces, are required.

1870 Amer. Naturalist 4 634 A Kelner's [sic] eye-piece, suggested as a condenser by Mr. Brooke, and urged by Dr. Beale, would be still better; and probably Tolles' orthoscopic eye-piece would answer the same purpose.

1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 616 I beg to refer the reader to my remarks on orthoscopic spectacles.

1881 Jrnl. Royal Microsc. Soc. 1 204 Orthoscopic vision is always obtained, when the right half of the right pupil and the left half of the left pupil only are employed—pseudoscopic vision in the opposite case.

1922 L. Bell Telescope vi. 139 The monocentric eyepiece..is admirably achromatic and orthoscopic.

1946 G. Z. Dimitroff & J. G. Baker Telescopes & Accessories ii. 41 The orthoscopic eyepiece properly designed can yield a fairly large, highly-corrected, colorless field of view.

1959 C. Frank Bk. of Telescope (ed. 2) xi. 77 It [sc. the Erfle military eyepiece] is fully orthoscopic over a very wide field.

1977 Ecology 58 940/1 We are interested in assessing ground cover of a range of pasturelands and use a 30-mm lens and a 6 × orthoscopic eyepiece with an in-focus depth of field of 30 cm.

2002 Appl. Optics 41 4140 The two lens arrays are positioned at a suitable distance, so that orthoscopic 3D images with the correct depth are formed in front of the lens array.

B. n.

Optics. An orthoscopic eyepiece.

ΘΚΠ

the world > physical sensation > sight and vision > optical instruments > lens > [noun] > eye-piece

eyeglass1665

ocular1702

eyepiece1729

Ramsden1787

field glass1797

negative eyepiece1831

positive eyepiece1842

Kellner1865

orthoscopic1868

eye-point1875

comparison eyepiece1940

1868 M. C. Lea Man. Photogr. iii. ix. 188 The Dallmeyer Rectilinear lenses, and Ross' Doublet are also suitable. The orthoscopic copies excellently.

1922 L. Bell Telescope vi. 145 A decidedly better form of positive ocular is the modern orthoscopic as made by Steinheil and Zeiss.

1955 J. B. Sidgwick Amateur Astronomer's Handbk. viii. 138 Numerous orthoscopics exist, variant on the original design by Mittenzwey.

1987 P. Moore Astron. Encycl. 155/2 Probably the best general purpose eyepiece is the orthoscopic.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthoscopic
释义	orthoscopicadj.n. Brit. /ˌɔːθəˈskɒpɪk/, U.S. /ˌɔrθoʊˈskɑpɪk/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: ortho- comb. form, -scopic comb. form. Etymology: < ortho- comb. form + -scopic comb. form, after German orthoskopisch (1849 or earlier). A. adj. Having or producing normal vision; yielding an image free from optical distortion; spec. of binocular vision: without the reversal of convexity and concavity produced by pseudoscopic instruments. orthoscopic eyepiece n. Optics a kind of eyepiece, typically consisting of a planoconvex eye lens with a triplet field lens, giving a high-quality image. ΘΚΠ the world > physical sensation > sight and vision > types of vision > [adjective] > normal or correct orthoscopic1853 twenty-twenty1875 orthoptic1886 orthophoric1888 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 1853 Q. Jrnl. Microsc. Sci. 1 305 To produce orthoscopic binocular vision, simple, not erecting eye-pieces, are required. 1870 Amer. Naturalist 4 634 A Kelner's [sic] eye-piece, suggested as a condenser by Mr. Brooke, and urged by Dr. Beale, would be still better; and probably Tolles' orthoscopic eye-piece would answer the same purpose. 1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 616 I beg to refer the reader to my remarks on orthoscopic spectacles. 1881 Jrnl. Royal Microsc. Soc. 1 204 Orthoscopic vision is always obtained, when the right half of the right pupil and the left half of the left pupil only are employed—pseudoscopic vision in the opposite case. 1922 L. Bell Telescope vi. 139 The monocentric eyepiece..is admirably achromatic and orthoscopic. 1946 G. Z. Dimitroff & J. G. Baker Telescopes & Accessories ii. 41 The orthoscopic eyepiece properly designed can yield a fairly large, highly-corrected, colorless field of view. 1959 C. Frank Bk. of Telescope (ed. 2) xi. 77 It [sc. the Erfle military eyepiece] is fully orthoscopic over a very wide field. 1977 Ecology 58 940/1 We are interested in assessing ground cover of a range of pasturelands and use a 30-mm lens and a 6 × orthoscopic eyepiece with an in-focus depth of field of 30 cm. 2002 Appl. Optics 41 4140 The two lens arrays are positioned at a suitable distance, so that orthoscopic 3D images with the correct depth are formed in front of the lens array. B. n. Optics. An orthoscopic eyepiece. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > eye-piece eyeglass1665 ocular1702 eyepiece1729 Ramsden1787 field glass1797 negative eyepiece1831 positive eyepiece1842 Kellner1865 orthoscopic1868 eye-point1875 comparison eyepiece1940 1868 M. C. Lea Man. Photogr. iii. ix. 188 The Dallmeyer Rectilinear lenses, and Ross' Doublet are also suitable. The orthoscopic copies excellently. 1922 L. Bell Telescope vi. 145 A decidedly better form of positive ocular is the modern orthoscopic as made by Steinheil and Zeiss. 1955 J. B. Sidgwick Amateur Astronomer's Handbk. viii. 138 Numerous orthoscopics exist, variant on the original design by Mittenzwey. 1987 P. Moore Astron. Encycl. 155/2 Probably the best general purpose eyepiece is the orthoscopic. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < adj.n.1853
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