Home / Terms / Uniformity Technical meaning Uniformity is about the spread of light across an assessed area, not only the average level. Dark corners, racking shadows, partitions and strong beam pools can all reduce practical uniformity. P1 P2 P3 P4 P5 lowest point minimum / average Uniformity point set Uniformity ratios should stay tied to one point set, one plane and one operating condition. Calculation use Early calculators can flag likely spacing and shadow concerns, but they do not calculate formal uniformity ratios. Uniformity should be discussed beside task plane, beam spread, mounting height and measured or modelled point values. Not the same as Uniformity is not the same as average illuminance. It is not proven by fixture count alone because layout, optics, surfaces and obstructions change the result. Australian context Australian workplace and warehouse notes should treat uniformity as a separate comfort and task-visibility issue beside maintained illuminance. Examples Example Value Planning note Desk bank bright centre, dim edges Average lux can look acceptable while edge desks are weaker. Warehouse aisle racking shadows Vertical faces and lower shelves may need separate attention. Downlight room pools between fittings Spacing and beam overlap matter as much as the count.
Calculation limits and records Uniformity notes in this site support early planning. Formal workplace or public-space checks need the applicable method and measured or modelled evidence.