Brightness and Luminance of Light-Emitting Diodes: Influence of Size and Defocus
Anno: 1980
Autori: Ronchi L., Macii R., Stefanacci S., Bassan M.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Abstract: When a narrow-band source is compared to a white source, through a simultaneous brightness match, the equibrightness condition does not necessarily imply that the luminances of the two sources coincide. This known fact is now checked by using as sources red and green light-emitting diodes (LEDs), compared to CIE source A. In addition, we check some predictions concerning the influence of saturation, wavelength dependence, and small-field effects. Some problems related to eye-lens accommodation are attacked by taking into account the chromatic aberration of the eye and the unpredictable role of psychological factors in determining the wavelength focused on the retina. Their influence on the brightness-luminance ratio is quantified.
Giornale/Rivista: COLOR RESEARCH AND APPLICATION
Volume: 5 (4) Da Pagina: 207 A: 211
Parole chiavi: vision; LEDs; DOI: 10.1002/col.5080050403Citazioni: 3dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui