IEC 62595-2-5:2021规定了测量凸面和凹面圆柱形光源光学特性的测量方法。这些非平面光源（NPLs）可以具有连续、独特、分段或分块的光辐射表面，例如OLED面板、集成LED、集成迷你LED、微型LED、激光二极管，每个都是单色或多色的。

IEC 62595-2-5:2021 specifies the measurement methods for measuring the optical characteristics of convex and concave cylindrical light sources. These non-planar light sources (NPLSs) can have either a continuous, distinct, segmented or block-wised light radiating surface, for example OLED panels, integrated LEDs, integrated mini-LEDs, micro-LEDs, laser diodes, each being either monochromatic or polychromatic.