Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/37061
Título: | Radiometric characterization of a novel LED array system for visual assessment |
Autor(es): | Linhares, João M. M. Neves, Helena Ferreira, Daniela Lopes Ribeiro, Miguel Faria Matos, S. C. Peixoto de González-Méijome, José Manuel |
Palavras-chave: | Night vision Visual assessment Haloes Glare Starburst |
Data: | 2013 |
Editora: | Taylor and Francis |
Revista: | Journal of modern optics |
Citação: | Linhares, J.M.M.; Neves, H.; Lopes-Ferreira, D.; Faria-Ribeiro, M.; Peixoto-De-Matos, S.C.; Gonzalez-Meijome, J.M.Radiometric characterization of a novel LED array system for visual assessment, Journal of Modern Optics, 60, 14, 1136-1144, 2013. |
Resumo(s): | Light that enters the eye can be distorted due to several factors leading to a poor visual performance. The purpose of this paper is to describe and characterize the light-emitting diode (LED) display system to be used in a new device to assess visual quality under high glare conditions. The device has a central white LED and surrounding white LEDs distributed in a radial manner. Each LED is controlled independently using special designed software. The spectral power distribution and color of the LEDs were assessed at different voltage intensities to test the response in terms of output luminance and spectral distribution. It was found that the typical maximum luminance was about 2800 cd/m2 and 6 cd/m2 for the central and surrounding LEDs, respectively. Their color was found to be within the ΔE⁄ ab range of 2.6 and 0.23, respectively, if the minimum and maximum intensities are considered. The characterization of this device was proved successfully, which might indicate its usefulness in future visual assessments. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/37061 |
DOI: | 10.1080/09500340.2013.842614 |
ISSN: | 0950-0340 1362-3044 |
Outros identificadores: | 0950-0340 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
5.5.90. LINHARES_13_JMO (Radiometric Characterization of LDA).pdf | 480,96 kB | Adobe PDF | Ver/Abrir |