The luminosity curve of the eye as determined by measurements with the flickerphotometer

作者: H.L De Vries

DOI: 10.1016/0031-8914(48)90049-4

关键词: TrichromacyBrightnessOpticsPhotometerPhotometry (optics)PhysicsPhoton

摘要: Abstract The influence of test field brightness on the results flicker-photometry has been studied. In greater part measurements a red and green have compared. Further coloured background, which was superimposed, examined. Various normal trichromats, anomalous trichromats dichromats were observers. It is found that, below 50 photons, simple laws for photometry are valid. adjustment photometer does not then change if brightnesses all components multiplied by same factor, or background added. At higher levels deviations occur.