The phrase "average illuminance" is correct and usable in written English.
It can be used in contexts related to lighting, photography, architecture, or any field that involves measuring light levels.
Example: "The average illuminance in the room was measured at 300 lux, providing adequate lighting for reading."
Alternatives: "mean light level" or "typical brightness".
He assessed the target visibility under different road lighting illuminations (100, 75, 50 and 25% of luminous flux with an average illuminance of 31.5, 23.6, 15.7 and 8.7 lx or average luminance of 2.45, 2.24, 1.53, and 0.73 cd/m2, respectively).
The desired average illuminance must also be informed as well as the accepted tolerance.
Different spaces in general household with different standards of average illuminance were designed and simulated by LightTools and DIALux software.
Results indicate that the HPS luminaire can provide better average illuminance and average luminance values than LED luminaires, resulting in positive visual performance.
And the illuminance uniformity which is the ratio of minimum illuminance (min E) to average illuminance (ave E) also can reach above 95%.
As part of the study, average illuminance was also measured in each street to detect potential correlations between survey data, illumination levels, and color of light.
The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14 lx, which could meet almost all types requested by IESNA.
The average horizontal illuminance on the pitch was measured 1300 lx, much lower than the minimum criterion of 3500 lx.
When we applied the proposed changes to the study areas, we found that our simulations would improve the "average horizontal illuminance" and the basic conditions for perceiving people.
The results show that under the maximum setting, the average workplane illuminance was 239 lx for the test room used, whereas discomfort glare at the observer's positions was classified as imperceptible.
The result shows that a monthly average daylight illuminance above 300 lx in a room located in Canton requires a DF of no less than 1.8% for north-facing space.
