Light is energy and that energy is measured in nanometers on the electromagnetic spectrum. The chart above shows our visible spectrum.

In lighting, the Kelvin scale is used and is a way to describe color.. A 5000K Daylight or cool white fixture emits a different color than a 2700K Warm white. The graphs above show the nanometer ranges of a 5000K and 2700K Warm white LED light. Notice the differences in blue light content levels.

Excessive Blue light has been proven to be detrimental to our world. For millions of years, every species lived in darkness during the night, under moon and stars. The effects of LED lighting on our environment were not fully understood because the industry jump started itself quickly with its enticing energy savings. Now the consequences of blue light and its harmful effects are being increasingly recognized. Notice on the graphs above the minimal blue light content of Narrow Band Amber and PC Amber. Filtered LED options has less than 1% Blue Light.

For more information, check out our FAQ section or contact us for any further questions.


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1. What is blue light? What does it do?

Blue light is one tiny piece of the rainbow, or spectrum, of light visible to the human eye. It is present in daylight, allowing us to see the full range of color, as well as being the main mechanism for many biological and ecological processes. Plants use blue light for photosynthesis. Nocturnal animals utilize the limited blue at night to find food and navigate. Humans release chemicals to wake up and stay awake, later to sleep as blue light fades at night. If blue light is introduced artificially where it is not natural, all of these processes and more can be harmed.

2. How much blue light is bad for the environment?

Scientists are studying these answers now, trying to determine the affect of artificial blue light on the countless aspects of our environment that it touches. As a general rule, there are very low amounts of blue light naturally at night via the moon and stars, varying between 0% and 4% depending on the cycle of the moon. Thus we maintain it is important not to add anything unnatural to our nighttime environment, since it is so difficult to determine the true harm in our complex ecological systems. Certain areas with endangered or at risk animals, or those places with other special considerations, may determine their own standard for the amount of acceptable blue light, often striving for as little as possible.

3. Is blue light harmful to humans?

Blue light is a natural and necessary part of our environment. It helps our body know when it is time to wake up and helps it stay active due to certain chemical processes. When blue light is introduced artificially at the wrong times, such as at night when darkness is expected, then the body turns on those daytime processes incorrectly. Studies have shown that this can be harmful for our health. See the Education section for more info.

4. Which type of LED fixture should I choose?

This will depend on your circumstances. If you have a local ordinance, they will often list approved technology, such as PC Amber. They may also provide parameters for how much blue and other colors of the spectrum are allowed. Depending on what is required, one or more of our solutions may work for you.

5. What is the difference between PC Amber, Narrow Band Amber and Filtered LED's?

Phosphor converted amber uses a blue (traditionally called white) LED and places a special amber phosphor over the top that emits an amber color when energized. A narrow band amber is an LED that emits amber light without using a phosphor. A filtered LED is a traditional white LED with a filter added to remove various ranges of the blue light from the spectrum as it exits the fixture. This last option is the most flexible for adjusting the spectrum.

6. Why are they different colors?

As greater amounts of blue are removed from the full spectrum of lighting, the color begins to go toward amber. Thus, there are various color options depending on the desired amount of blue light in a fixture.

7. Do I still save energy?

Filtered LEDs and PC Amber are very energy efficient and excellent ways to achieve energy savings while also being responsible vis-a-vis the environment and human health. Narrow Band Amber is not considered an energy savings technology, though some communities still approve it as the preferred light source for its narrow spectrum range, such as observatory communities.

Info on ordering

1. How quickly does a product ship?

Shipping depends on quantity and availability. If a product is available, it will be shipped within 3 business days. If a product isn’t, an eta will be provided.

2. What is your refund policy?

We offer a full refund for products that have not been used for more than 72 hours. For large quantities, we recommend purchasing a sample fixture. Customer is responsible for return shipping.

3. What is your warranty?

5 year limited warranty. Limited by things such as “Acts of God,” excessive power surges, accidents, negligence, improper installation. Please contact us for full terms and conditions.

4. I am a contractor. Do I get a discount?

Please contact our office to get a promo code.

5. I am an end user. Do I get a discount?

Quantity discounts are available. Please contact our office to get a promo code.