When it comes to choosing a good panel light for office lighting, we will look at 6 aspects.
1. Power Factor
If the power factor of led panel light is low, it means that the power supply and circuit design are not good, which will greatly reduce the life span of LEDs. The LED panel light is powered by constant current, but it is not ruled out that some products are powered by voltage drivers, which accelerate the light decay of LED panels. In this regard, we can test it with a tool called “power factor meter”. Generally, the power factor of LED panel lights is required to be above 0.85. If the PF is lower than 0.5, then it’s considered as e a substandard product. Because not only does it have a short lifespan, but the actual power consumption is about twice as high as the nominal value.
2. Luminous Efficiency
The higher the luminous efficiency, the higher the brightness. If two panel lights are with the same brightness, the smaller power consumption type is the most energy-saving light. Normally the panel light luminous efficiency should be at least 100lm/w, so it can serve the general lighting purpose for the space of offices, supermarkets, and so on.
3. Heat Dissipation and Configuration
If the heat dissipation is bad, the lamp beads keep working at high temperatures condition, its service life will be greatly reduced. Generally, the main materials used for heat dissipation include copper, aluminum, and PC. Among them, copper is with the best conducted heat performance, aluminum comes second, and PC conduct heat is the least. Currently, aluminum is the most popular heat sink material, especially the inserted aluminum has the best heat dissipation effect.
In addition, high-quality LED flat panel light generally has an integrated design body and is made of anti-oxidation aluminum alloy material, the special finish allows them to be used in any humid environment and avoid problems such as rust and leakage.
4. LEDs brand and quality.
The quality of LEDs depends on the chip quality and packaging technology. LED chip quality determines the brightness and light decay of the LED lamp bead. Good lamp beads not only have high luminance but also have low light decay. The best LED chip brands included CREE, PHILIPS, OSRAM, NICHIA, BRIDGELUX, etc.
5. Power Supply
LED power supply made of aluminum alloy is better than that of engineering plastic. Not only does an aluminum-made power supply has good heat dissipation, but also can effectively protect the internal components of the luminaire from loosening and crushing during the transportation and use of the luminaire, and can effectively reduce the failure rate of the LED driver.
6. Light Performance
While ensuring the quality of LED panel lights, we also need to look at the two design priorities of health, eye protection, and flexibility. Since LED panel lights are widely used in office applications, to avoid people getting headaches or eye strain, a good LED panel light should have a lower UGR (<19) and flicker-free design. Edgelit panel lights are with 120-degree beam angle, light distribution is even and without dark spots, the panel lights should prevent staff from visual fatigue and improve work efficiency.