Aug 16, 2017:With each passing day, LED lighting is becoming more advanced with a number of added benefits such as elimination of replacement cost and time, reduction of heat emittance, energy efficiency, etc. However, the true worth of these lights can be traced only through their performance and quality.
There are a number of issues related to LED technology such as poor standards, aggressive competition between companies, excess production capacity, etc. All these have hindered the overall quality of LED products. In addition, consumers are not much aware about LEDs, and hence, end up buying the wrong LED lighting products.Many of the consumers tend to make some mistakes while buying LED lights.
Expectation Vs actual lifespan
The first and foremost mistake is that most of us expect too much as against the actual lifespan of LED lights. Majority of the LED lightingmanufacturers anticipate that LED lifespan will extend up to 100,000 hours MTBF. MTBF is the mean time between failures-standard that conventional lamp manufacturers use for measuring lifespan of light sources.
Just like other light sources luminous flux lumens also reduce over time. Hence, MTBF cannot be considered as the sole factor to verify the lifespan of LEDs, although the service time of LEDs is longer as compared to other light sources.
Some major mistakes buyers make while buying LED lights
The reduction of LED lumens is affected by certain environmental factors like temperature, humidity and ventilation, current level, thermal management and other related factors. Thus, when buying LED bulbs, buyers should pay more attention to the speed of lumen decrease rather than its lifespan.
More power doesn’t mean higher brightness
Brightness of LEDs can be measured with luminous intensity. Luminous intensity is a photometric measure calculated in lumens per steradian (lm/sr). In general, light source can release different luminous flux to different directions. In addition, the visible light radiation intensity, which releases from unit solid angle in aparticular direction is light intensity.
In electric power, the faster the current is, the higher electric power is. However, in LED lighting, more power doesn’t necessary mean higher brightness. When buying LED lamps, the buyers should focus on luminous intensity rather than high power.
Actual beam angle and effective angle
The beam angle of LEDs consists of effective angle and actual beam angle. The direction of lighting optic axis is termed as effective angle and, the incorporated angle between directions of which luminous intensity values are half of axial intensity values.
On the other hand, the viewing angle of double half-value angle is termed as actual beam angle. The angle which is beyond half of axial direction intensity doesn’t measure in effective angle owing to its weak light ray.
Hence, when buying LED lights buyershave to pay attention to the actual beam angle, while effective angle should also be looked at as reference.