单词 | demagnify |
释义 | demagnifyv. transitive. Of a lens, etc.: to make smaller. Also absol. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [verb (intransitive)] > make smaller demagnify1960 the world > physical sensation > sight and vision > optical instruments > lens > [verb (transitive)] > make smaller demagnify1960 1960 Sat. Rev. (U.S.) 2 Apr. 45/2 We can reverse the lenses of the electron microscope in order to demagnify rather [than] to magnify. 1963 L. S. Birks Electron Probe Microanal. iii. 26 The second lens further demagnifies the image and focuses the electron beam on the specimen surface. 1984 Electronics 23 Feb. 74/2 The ions shooting through the holes in the mask go through an ion optical-projection lens system that demagnifies the mask's ion image. Derivatives deˈmagnified adj. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [adjective] > made smaller demagnified1963 1963 L. S. Birks Electron Probe Microanal. iii. 25 The first lens forms a demagnified real image of the hot filament. deˈmagnifying adj. 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 1959 Jrnl. Sci. Instruments 36 350/1 The limit is set chiefly by the spherical aberration of the final demagnifying lens and the current density per unit solid angle..of the electron gun. 1976 Physics Bull. Sept. 397/3 A demagnifying image intensifier with an ultraviolet photocathode. demagnifiˈcation n. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > making smaller demagnification1959 1959 Jrnl. Sci. Instruments 36 352/1 The demagnification of the source takes place in two stages. 1963 L. S. Birks Electron Probe Microanal. iii. 26 The working distance is related to the focal length of the second lens and the demagnification required. 1984 Electronics 23 Feb. 73/3 Such 10X demagnification relaxes the accuracy needed in mask fabrication, so that masks can be made by common lithographic methods. This entry has not yet been fully updated (first published 1989; most recently modified version published online June 2019). < v.1959 |
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