根据国际能源机构4E固态照明附件，与来自19个国家的36个参与实验室进行了固态照明（SSL）产品角度光度计测量的全球实验室间比较（IC 2017），共有42台角度光度计，包括镜面式、近场式和源旋转式角度光度计。一个窄光束LED灯和三种不同类型的LED灯具，包括一个街道照明灯具，被用作16种不同量测量的对比人工制品。其中包括电学、光度学和色度学量，以及角度光度学量，如中心光束强度、光束角度、部分通量（15°锥角）和角度颜色均匀性。 试验方法为CIE S 025。结果表明，总的来说，光通量和色量是一致的，然而，在测角光量结果中发现了更大的变化和各种问题。近场式和源旋转式测角仪的整体精度与远场镜式测角仪相当。

The global interlaboratory comparison (IC 2017) on measurements of solid-state lighting (SSL) products with goniophotometers was conducted under the International Energy Agency 4E Solid State Lighting Annex with 36 participating laboratories from 19 countries with a total of 42 goniophotometric instruments including mirror-type, near-field type and source-rotating type goniophotometers. A narrow-beam LED lamp and three different types of LED luminaires, including a street lighting luminaire, were used as comparison artefacts for measurements of 16 different quantities. These included electrical, photometric, and colorimetric quantities, and goniophotometric quantities such as centre beam intensity, beam angle, partial flux (15° cone angle), and angular colour uniformity.  CIE S 025 was used as the test method. The results demonstrated overall good agreement on luminous flux and colour quantities, however, larger variations and various problems were identified in goniophotometric quantity results. Near-field type and source-rotating type goniophotometers showed equivalent accuracies overall to those of far-field mirror type goniophotometers.