| 单词 |
luxmeter |
| 释义 |
luxmeter|ˈlʌksmiːtə(r)|
Also luxometer.
[f. lux n. (+ -o) + meter n.3]
An instrument for measuring the luminance (brightness) or illuminance (illumination) of a surface.
1910H. M. Hobart Dict. Electr. Engin. II. 319/2 Luxmeter, photometric. This is a photometer of the ‘cat's-eye type’. 1912W. C. Clinton tr. Bloch's Sci. of Illumination v. 101 A further development..in the direction of greater portability and lightness has been made in the luxometer. 1915Gaster & Dow Mod. Illuminants vii. 261 Another small instrument of the surface-brightness type, the ‘Luxometer’, has recently been introduced. 1932Proc. Internat. Illumination Congr., 1931 I. 215 Two types of luxmeter have been studied: the luxmeter with a scale of illuminations, and the luxmeter with a single comparison illumination, controllable either by the distance of the lamp or by the interposition of a photometric wedge. 1967E. Chambers Photolitho-Offset vii. 85 Meters can be purchased for measuring the number of Lux (luxmeters) or [printed of] foot-candela (foot-candela meters). |
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