Amber Lighting - Turtle Friendly Illumination
Studies have shown that lighting in a specific wavelength range is less disruptive to sea turtles. Longer wavelength lighting (e.g., amber LEDs) is less disruptive than white light. Lighting with a high blue light component may confuse hatchling turtles that rely on moonlight to guide them toward the surface. In a 2000 STC study at Gulf Islands National Seashore, 45% of hatching nests were disoriented by lights from adjacent shoreline buildings. A low-glare, properly shielded amber LED light source helps minimize this confusion.
According to the FWC, lamps that are not harmful to sea turtles must limit light to short wavelengths below 560 nm. The graph below shows the energy emitted by a typical 6500K LED light source at each wavelength, with the greater amount of energy emitted below 560nm (60% of the total) highlighted in blue.
Visible light is the part of the electromagnetic spectrum that can be perceived by the human eye, and there is no precise range of the visible spectrum; the general human eye can perceive the frequency of electromagnetic waves in the range of 380~750THz, and the wavelength is between 780~400nm.
Electromagnetic waves with different frequencies cause different color sensations in the human eye.
Our turtle friendly amber light source limits this short wavelength energy by producing more light above 560 nanometers (nm), and integrating sphere testing shows that the lower the color temperature, the less short wavelength blue light there is, even controlling blue light to less than 1% at 1800K.
At ROKEE LIGHING, we offer 1800K-2700K Amber LED/Solar Street light, Flood light, for the perfect lighting solution no matter where you live. Contact us for customized lighting.