What Are The Parameters Of A Lighting Fixture?

Dec 17, 2025

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The main performance parameters of a lighting fixture include the following:

Luminous Flux:Measured in lumens (lm), it represents the total amount of light emitted by the fixture. For example, the luminous flux of a typical household LED bulb is between 800-1600 lm.

 

Luminous Efficacy: Measured in lumens per watt (lm/W), it represents the efficiency with which the fixture converts electrical energy into light energy. High-efficiency LED fixtures can achieve a luminous efficiency of 100-150 lm/W.

 

Color Temperature:Measured in Kelvin (K), it represents the color of light. Warm white light (2700K-3000K) is suitable for home use, while cool white light (5000K-6500K) is suitable for offices or outdoor use.

 

Color Rendering Index (CRI):Indicates the ability of a light source to reproduce the true colors of objects, ranging from 0-100. High-quality lighting fixtures typically have a CRI greater than 80.

 

Beam Angle:Indicates the angle of light diffusion. Narrow beam angles (<30°) are suitable for accent lighting, while wide beam angles (>60°) are suitable for floodlighting.

 

IP Rating:For example, IP65 indicates dust and water resistance, suitable for outdoor lighting.

 

Lifetime:Usually measured in hours. LED lights have a lifespan of 25,000-50,000 hours.

 

Power:Measured in watts (W), indicating the energy consumption of the light fixture.

 

Operating Voltage:Such as AC 220V or DC 12V, the appropriate voltage must be selected based on the application.

 

Material:Such as aluminum alloy or plastic, affecting the durability and heat dissipation performance of the light fixture.

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