What is are the differences between luminance and illuminance?

Common lamps in daily life are as follows:UFO LED High Bay Lights Temporary Work Lights LED Dock Lights LED Canopy Lights Industrial High Bay Lights LED Grow Lights LED Gas Station Lights LED Corn Light Bulbs,Let’s talk about the relationship between brightness and illuminance.

Brightness: refers to the brightness perceived by the eyes when people look at the light source. The brightness depends on the color temperature of the light source and the luminous flux of the light source, and the luminous flux of the light source is the decisive factor. The more luminous flux of the light source, the higher the brightness.

Illuminance: refers to the luminous flux per unit illuminated area illuminated by the light source to the surrounding space or the ground. The more luminous flux per unit of illuminated area, the higher the illuminance.

The related point is: the physical quantity that affects the brightness of the light source and the level of illumination is common, namely: luminous flux.

Of course there are differences:

Difference 1: The luminous flux that affects the brightness of the light source is the amount of luminous flux radiated from the surface of the light source.

Difference 2: The luminous flux that affects the illuminance of the light source is the amount of luminous flux that the light source radiates to the illuminated surface (such as walls, floors, and work surfaces).

Difference 3: The positions of the two are different, and the factors affected by the outside world are also different. For the same light source, the luminous flux radiated from the surface of the light source and the luminous flux radiated from the light source to the illuminated surface (such as walls, floors, and work surfaces) are not equal in quantity.

To learn more about the relationship between brightness and illuminance, please visit the website bbier.com for a detailed discussion.

BBIER®, Professional Commercial LED Lighting Manufacturer & Company & Supplier & Factory, Supplying LED Post Top Lights, Solar Post Top Lights, LED Grow Lights, Explosion Proof Lights, LED Stadium Lights, Temporary Work Lights, UFO High Bay Lights, LED Shoebox Lights, etc. We have over 13 years of commercial lighting R&D experience, 50+ LED lights patents, 200+ LED Lights Certifications, Support OEM & ODM, 5 Years Warranty.