Recently, the brightness standard device of Zhejiang Institute of Metrology has passed the re-examination of the measurement standard expansion, and the brightness measurement capacity has been increased from (3~1500) cd/m2 to (1~30000) cd/m2, which has greatly improved the Institute’s capacity in the field of light and brightness, reaching the domestic leading level.
Luminance meter is an instrument for measuring the brightness of light, which is widely used in display screen, electric light source, lighting engineering, transportation, aerospace, film and television and other fields. This expansion of the measurement range of the brightness standard device can provide enterprises in the province with a larger measurement range of brightness meter traceability services.
Since the establishment of the brightness standard device in 1990, the Provincial Institute of Metrology, as the only legal metrological verification institution with the brightness standard device in the province, has been in the forefront of the provincial legal institutions in the construction of the brightness capacity. Through the device transformation, it passed the CNAS expansion examination in 2021, raising the brightness measurement capacity to (0.1~30000) cd/m2, becoming the earliest technical institution with the high brightness calibration capability in China, The JJG 211-2021 Verification Regulation of Luminance Meter, which was drafted, was released and implemented. In recent years, relying on the luminance meter manufacturers in the province, the Provincial Institute of Metrology has provided brightness measurement value traceability services for enterprises and institutions in more than 20 provinces, including Guangdong, Shanghai and Jiangsu.
(Source: Zhejiang Online)