About visible light

Visible light has a different meaning for various organisms! Ever since man created artificial light, the bulb characteristics were developed to suit human vision. Nobody even considered the specific visual sensitivities of organisms, other than human vision, when designing a lightbulb. This has changed, since Exo Terra designed bulbs with specific wavelengths for the reptile's vision.

Fluorescent bulbs are up to six times more efficient than incandescent bulbs in producing visual light since virtually no heat is produced, but its spectrum is limited to certain peaks in particular wavelengths. By changing the composition of the phosphors inside the bulb we are able to tweak those peaks. Once these peaks correspond to the spectral sensitivity of an organism, an ideal visual spectrum for that organism is created.

Human eyes have three receptors for color vision, whereas most reptiles possess a fourth receptor, enabling them to perceive higher-wavelength UVA. This extended color perception is extremely important for their physiological wellbeing. Exo Terra has designed a bulb with a spectrum specifically geared towards the reptile eye. In this light-spectrum, reptiles experience a more truthful environment, similar to what they would perceive in nature.

Human vision / Reptile vision

Exo Terra has designed a bulb that combines the spectrums of both the human vision and for optimal plant growth. The very high visual light output with high color rendering index of 98 CRI and 6700 K Color temperature make it an ideal bulb for human vision. Its light output in the wavelengths ideal for photosynthesis give it the potential to stimulate plant growth.

Photosynthesis is an essential process that enables plants to capture the sun’s energy. Light energy is transformed into sugars and starches. Photosynthesis in plants depends on Chlorophyll, a photosynthetic pigment that absorbs blue light with wavelengths of 430 nm and red light of 662 nm. Green light is not absorbed but reflected by chlorophyll, this is the reason why plants that contain chlorophyll have a green appearance.

Visible light

Click a bulb for in-depth information on Exo Terra’s visible lighting range:

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3rd discovery of a new species during Exo Terra expedition