| 单词 | spot meter |
| 释义 | > as lemmasspot meter spot meter n. a photometer that measures the intensity of light received within a cone of small angle, typically 2° or less. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation phaometer1747 photometer1779 diaphanometer1789 lucimeter1825 refractometer1842 Abbe refractometer1876 dietheroscope1877 reflectometer1879 radiomicrometer1887 holophotometer1888 flicker photometer1896 microphotometer1899 diffractometer1909 spot meter1952 photopolarimeter1971 1949 Jrnl. Soc. Motion Picture & Television Engineers Nov. 607/1 The Tele-Spot Meter..has an optical system enabling it to measure the light coming from a small area, or a narrow angle, such as a one-inch circle at ten feet.] 1952 Jrnl. Soc. Motion Picture & Television Engineers June 552/1 This new Spectra Brightness Spot Meter will soon be available from Photo Research Corp... It is designed to measure the brightness of a very small area at any distance from 4 ft to infinity. 1976 Physics Bull. Sept. 395/3 A range of luminance (brightness) spotmeters and illuminance meters will be displayed. 2000 DigitalFoto Oct. 32/2 Use your camera's spot meter and be sure to take readings from your subject. < as lemmas |
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