Optics. The capacity of a lens or combination of lenses for increasing the apparent size of an object; = magnifying power n. at magnifying, n.…
| 单词 | θ64922 |
| 释义 | the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses (11) power1673 Optics. The capacity of a lens or combination of lenses for increasing the apparent size of an object; = magnifying power n. at magnifying, n.… refracting angle1676 the angle between two faces of a prism or lens. resolution1831 Originally: the effect of a telescope in making the stars of a nebula distinguishable by the eye. Later more widely: the process or capability of… depth of focus1852 (with reference to a lens or lens system) (a) the distance between the nearest and farthest objects which may be simultaneously brought into focus… astigmatism1859 Optics. A similar defect in a lens. aplanatism1869 Freedom from spherical aberration. apochromatism1887 Epithet of an improved form of achromatic lens invented by Abbe. Also as n.: an apochromatic lens; in Photography further shortened to ˈapochroˌmat n.… covering power1895 (a) = coverage, n. f; (b) (see quot. 1904). coverage1936 The act or fact of covering; the area, range, number, etc., that is covered by something; spec.. The range of a lens; the area over which a lens… asphericity1944 want of sphericity. parfocality1955 The property of being parfocal. |
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