英语词汇“telecentric”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

telecentric adj. and n.

Brit.

/ˌtɛlᵻˈsɛntrɪk/

U.S.

/ˌtɛləˈsɛntrɪk/

[after German telezentrisch (1878 or earlier as telecentrisch)] Optics (a) adj. (of a compound lens or other optical system) configured in such a way that the ray passing through the centre of the aperture stop is parallel to the system's axis on its object or image side (or both sides), so that either the entrance or exit pupil, or both, are effectively located at infinity; (also) of, relating to, or characteristic of such an optical system; (b) n. a compound lens configured in this way.Telecentric compound lenses may be formed by placing a small aperture stop at a principal focus. The important property of such a lens is that it eliminates parallax, so that regardless of an object's distance from the lens, the size of its image remains the same. Applications include scanning devices and optical measuring instruments.

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

1892 Jrnl. Royal Microsc. Soc. 680 Thus by this arrangement the telecentric path of the rays is obtained without the necessity of inserting a diaphragm in the front focal point of the system.

1902 C. R. Mann & R. A. Millikan tr. P. Drude Theory of Optics i. iv. 75 Certain positions of the iris can be chosen for which the entrance- or exit-pupils lie at infinity... To attain this it is necessary to place the iris behind S₁ at its principal focus... The system is then called telecentric [Ger. telecentrischer].

1921 Glasgow Herald 15 June 7 It was fitted with..a 12 in. Telecentric, and a variant of my ‘Dodo’ tele-lens.

1976 in E. R. Robertson Engin. Uses Coherent Optics 120 Using a telecentric lens to arrange collimated light.

2007 M. Laikin Lens Design (ed. 4) xxiii. 283 Systems have also been developed that are telecentric in both object and image spaces.

2007 Control Engin. Dec. im8/1 Integrators should look at both working distance range and depth of field when considering if a telecentric is applicable to a project.

单词	telecentric
释义	> as lemmas telecentric telecentric adj. and n. Brit. /ˌtɛlᵻˈsɛntrɪk/ , U.S. /ˌtɛləˈsɛntrɪk/ [after German telezentrisch (1878 or earlier as telecentrisch)] Optics (a) adj. (of a compound lens or other optical system) configured in such a way that the ray passing through the centre of the aperture stop is parallel to the system's axis on its object or image side (or both sides), so that either the entrance or exit pupil, or both, are effectively located at infinity; (also) of, relating to, or characteristic of such an optical system; (b) n. a compound lens configured in this way.Telecentric compound lenses may be formed by placing a small aperture stop at a principal focus. The important property of such a lens is that it eliminates parallax, so that regardless of an object's distance from the lens, the size of its image remains the same. Applications include scanning devices and optical measuring instruments. 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 1892 Jrnl. Royal Microsc. Soc. 680 Thus by this arrangement the telecentric path of the rays is obtained without the necessity of inserting a diaphragm in the front focal point of the system. 1902 C. R. Mann & R. A. Millikan tr. P. Drude Theory of Optics i. iv. 75 Certain positions of the iris can be chosen for which the entrance- or exit-pupils lie at infinity... To attain this it is necessary to place the iris behind S₁ at its principal focus... The system is then called telecentric [Ger. telecentrischer]. 1921 Glasgow Herald 15 June 7 It was fitted with..a 12 in. Telecentric, and a variant of my ‘Dodo’ tele-lens. 1976 in E. R. Robertson Engin. Uses Coherent Optics 120 Using a telecentric lens to arrange collimated light. 2007 M. Laikin Lens Design (ed. 4) xxiii. 283 Systems have also been developed that are telecentric in both object and image spaces. 2007 Control Engin. Dec. im8/1 Integrators should look at both working distance range and depth of field when considering if a telecentric is applicable to a project. extracted from tele-comb. form < as lemmas
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