輝度
Meanings
1
brightness; luminance
Technical term for the perceived brightness of a surface or light source, measured in cd/m². Used in physics, display technology, and lighting.
This display has high brightness, so it's easy to see even outdoors.
The unit of luminance is candela per square meter.
Usage patterns
- 〈物〉の輝度が高い／低いthe luminance of something is high/low
This display has high luminance.
- 輝度を上げる／下げるto increase/decrease the brightness (luminance)
I raised the screen's brightness to make it easier to see.
- 輝度を測定するto measure the luminance (of a surface or light source)
We measured the luminance with specialized equipment.