noun
uneven brightness; luminance unevenness
Technical term used mainly in display engineering and image quality evaluation. Refers to non-uniform brightness across a screen or surface.
この液晶パネルは輝度ムラが少ない。
This LCD panel has little luminance unevenness.
検査で画面の輝度ムラを測定する。
We measure the screen's brightness non-uniformity during inspection.
色ムラ refers to color unevenness, while 輝度ムラ specifically refers to brightness unevenness.
Compound of 輝度 (luminance) and ムラ (unevenness). The word ムラ is often written in kana in technical contexts.