Performance of LED Lights
Scopes & Testing
Performance of LED Lights
Performance of LED Lights
Testing the performance of LED lights in a laboratory setting is crucial to evaluate their efficiency, light output, color characteristics, and other key parameters. The following are some common tests performed in a lab to assess the performance of LED lights:
- 1) Luminous Flux Measurement: Luminous flux is the total amount of visible light emitted by an LED light source. This test measures the light output in lumens using an integrating sphere or goniophotometer, which captures and analyzes the light emitted from the LED at various angles.
- 2) Color Rendering Index (CRI) Test: The CRI measures how accurately an LED light reproduces colors compared to a reference light source. Higher CRI values (typically ranging from 0 to 100) indicate better color rendering capabilities.
- 3) Color Temperature Measurement: Color temperature indicates the color appearance of the LED light. It is measured in Kelvin (K). The test helps classify LED lights as warm white (lower color temperature) or cool white (higher color temperature).
- 4) Correlated Color Temperature (CCT) Test: This test confirms the color temperature of the LED light and ensures it meets the specified CCT rating.
- 5) Power and Efficiency Testing: The power consumption and energy efficiency of the LED light are determined through power measurements. Efficiency is expressed as lumens per watt (lm/W), indicating how much light is produced per unit of electrical power consumed.
- 6) Chromaticity and Dominant Wavelength: Chromaticity coordinates are measured to determine the exact color point of the LED light on the CIE chromaticity diagram. The dominant wavelength is also determined to identify the dominant color emitted.
- 7) Thermal Performance Testing: LED lights generate heat during operation, so thermal performance testing is conducted to evaluate how effectively the luminaire dissipates heat and whether it operates within safe temperature limits.
- 8) Dimming Performance: Testing the dimming capabilities of LED lights helps verify their compatibility with various dimming systems and assess their performance across different dimming levels.
- 9) Flicker Testing: Flicker can cause discomfort and even health issues for some individuals. LED lights are tested for flicker to ensure they meet acceptable flicker standards.
- 10) Lifetime Testing: LEDs have a finite lifetime, and accelerated lifetime testing is conducted in the lab to estimate the expected lifespan of the LED light under various operating conditions.
- 11) Electrical Safety and EMC Testing: In addition to performance testing, LED lights also undergo electrical safety and electromagnetic compatibility (EMC) testing to ensure compliance with safety standards and regulations.
These tests are typically conducted using specialized equipment in controlled laboratory environments to obtain accurate and consistent results. House of Testing has all the expertise to perform such tests. We help manufacturers, lighting designers, and users make informed decisions regarding LED light selection and usage by collecting the data from these tests. Additionally, adherence to specific performance standards and certifications ensures the quality and reliability of LED lights in the market.
