Luminous efficacy

Luminous efficacy is a measurement of how well a light source converts electrical energy into visible light. It’s expressed in lumens per watt (lm/W), indicating how much visible light is produced for each watt of electricity used. Higher luminous efficacy means the light produces more brightness for less energy, making it more efficient. For example, LED bulbs typically have higher luminous efficacy than incandescent bulbs, providing the same brightness while consuming less power. This measurement helps compare different lighting options in terms of energy performance and cost-effectiveness.