What kind of goniophotometer can do luminance test according to UL1993 and CIE177?

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A brightness test in accordance with UL1993 may be carried out with the use of a goniophotometer of type C. The quantity of light that is emitted by a surface may be measured using the luminance, which is often represented in candelas per square meter (cd/m2)

Underwriters Laboratories (UL) developed a standard known as UL1993 in order to give guidance and standards regarding the safety of LED lighting devices. Measurements of brightness must be carried out with a goniophotometer of type C, as stipulated by the standard, which also contains luminance standards for LED lighting products.

An evaluation of brightness in accordance with CIE 177 may be carried out using a goniophotometer of type C. Luminance is the measurement of the quantity of light that is emitted by a surface, and it is often given in candelas per square meter (cd/m2).

The International Commission on Illumination (CIE) has developed a standard known as CIE177 that offers rules for the measuring of brightness for lighting products. In order to comply with the standard, all luminance readings must be taken using a goniophotometer of type C.

In conclusion, a goniophotometer of type C is an essential tool for lighting professionals who need to measure the luminance of their products in accordance with the UL1993 and CIE177 standards. This type of goniophotometer provides results that are accurate, reliable, and repeatable, which are essential for making informed decisions about the performance of their products.

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