I'm a little confused about your claim " We carry the brightest, highest-quality bulbs on the market, which we have designed in St. Louis, Missouri." I've been purchasing LED lamps from VLEDS for years and their products have great quality and very high brightness. For example I just purchased from them these backup light bulbs that are 1000 lumens. Unless I've read your web site incorrectly, they are much brighter than yours, more than twice in fact. So how can you make the claim of having the brightest?
6K WHITE HIGH OUTPUT 21 LED BACK-UP LIGHT 3156 1000LM | 1 PAIR
Thank you for asking!
At Diode Dynamics, all of our LED replacement bulbs are measured in-house rather than providing a "rating" or "calculated total"
Here's a video demonstrating and explanation of how our products are measured:
Here's a visual representation of how important the circuit design is to the brightness of an LED:
Here's an quick tidbit from our research section on LED Brightness: LED Brightness - LED - Research
"Many suppliers will take an inaccurate "80W" power rating, and just assume an efficiency for that bulb depending on the type of LED. For example, they might say, "high-power LED bulbs usually emit about 10 lumens per watt, so this bulb will be about 800 lumens!" This is a complete guess, and is likely completely inaccurate.
Why do they do this?
It is quite expensive to test actual lumen outputs- integrating spheres can cost up to $100,000- but suppliers know it is a great way to compare bulbs, so they will "calculate"
the lumen output for you. Sneaky, huh? If you see what seems like a completely arbitrary lumen rating, such as "1200 lumens," it probably is just that- a completely inaccurate guess.
Make sure your supplier provides "Measured Lumens," not "Calculated," "Estimated," or "Approximate." If it doesn't say "measured," it's probably not accurate! Stay away from any dishonest companies that offer "calculated lumens" at all costs!"
I hope that answers your question, please feel free to give us a call if you would like more information about our products or automotive lighting in general: (314) 205-3033