The bigger the power, the higher the brightness
The brightness of the LED panel lamp is measured by the luminous intensity, that is, the luminous flux emitted by the unit solid angle. Generally speaking, the light source radiates its luminous flux in different directions with different intensities, and the visible radiation intensity emitted by the unit solid angle in a particular direction is called light intensity, referred to as axial brightness. Current work fast, electric power is large; current work is slow, the electrical power is small, or in equal time, more power current, electric power is greater, in the LED, and not the greater the power, the higher the product brightness. Therefore, consumers should pay attention to the axial brightness instead of power when choosing LED lamps.
Misunderstanding two, too high expectations of the actual service life
LED manufacturers expect LED life to reach 100000 hours, but as with all basic light sources, the luminous flux of LED panel lights also decay over time. So, although the LED panel light can take a long time, MTBF is not the only consideration to determine the service life. The attenuation of LED lumens is affected by many environmental conditions such as ambient temperature, humidity and ventilation. Lumen attenuation is also affected by the control, thermal management, current level and many other electrical design considerations. Therefore, consumers should pay attention to in the purchase of LED when it is light speed, instead of using time, consumers do not expect too much on the actual service life.
Misunderstanding three, the actual luminous angle as an effective angle
The luminous angle of LED panel lamp is divided into effective angle and actual luminous angle. The angle of the luminous intensity value is half of the axial intensity value and the angle of the luminous axial direction is an effective angle. The angle of 2 times of the half value angle is the actual luminous angle. Beyond the half of the axial strength, the light is too weak to be used in practical applications. Therefore, consumers should pay attention to the actual luminous angle of the product when choosing the panel lamp. When calculating the quantity of the products used in the project, the actual luminous angle is the basis, and the effective luminous angle can only be used as the reference value.