The JJG 211-2021 luminance meter calibrating specification specifies the requirements for the first verification, subsequent verification and in-use inspection of luminance meters (including color luminance meters). Luminance meters are instruments used for the measurement of light luminance, and color luminance meters can also measure target chroma. Widely used in display screens, Electric Light sources, lighting engineering, Transportation, aerospace, film and television, etc. The luminance meter is divided into imagery type and shading cylinder type according to the viewing Optical path type. The imagery type includes sight type and image type. According to the Sampling method, it is divided into Light spectrum spectroscopic type and filter photoelectric integral type. Its working principle is to obtain the optical signal of the specified field of view target through the Optical inspection system, and then measure the luminance value through the photodetector and circuit. A luminance meter with color measurement function is called a color luminance meter. This procedure is divided into three levels: standard level, first level and second level. Measurement performance of all levels of luminance meters must meet the specified requirements to ensure the accuracy and Reliability of the measurement results.
| Status | Active |
|---|---|
| CCS | ICS |
| Release Date | 2021-12-08 00:00:00 | Implementation Date | 2022-06-08 00:00:00 |