Spectral measurements of light sources with a goniophotometer with and without mirror arrangement

8th Brazilian Congress on Metrology

Gomes, Juliana Freitas Santos^1 ; Ázara De Oliveira, Ivo Antônio^1 ; Sardinha, André Da Silva^1 ; Viana, Domingos David^1 ; Vieira, Rafaela Rezende^2 ; Barbosa, Amanda Hang^2 ; De Alvarenga, Ana Paula Dornelles^3

National Institute of Metrology, Quality and Tecnology - Inmetro, Optical Metrology Division, Radiometry and Photometry Laboratory, Av. Nossa Senhora das Graças, 50, Duque de Caxias

RJ

CEP 25250-020, Brazil^1

Universidade Católica de Petrópolis - UCP, Brazil^2

National Institute of Metrology, Quality and Tecnology - Inmetro, Optical Metrology Division, Colorimetry and Spectrophotometry Laboratory, Brazil^3

关键词: Comparative studies;    Correlated color temperature;    Goniophotometer;    LED light source;    Rotating mirrors;    Spectral correction;    Spectral measurement;    Spectral radiance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/733/1/012025/pdf
DOI  :  10.1088/1742-6596/733/1/012025

来源: IOP

【 摘 要 】

This paper presents a comparative study of the relative spectral radiance measurements of incandescent and LED light sources performed in two different setups with a rotating-mirror-goniophotometer. In one configuration the light is reflected by the goniophotometer mirror, while in the other the mirror is not used. This study permits to determine a spectral correction factor at each measured wavelength in order to obtain a more precise value for the Correlated Color Temperature (CCT)