"What's the difference between Luminook and Luminook+?"

You may have noticed that there's a non-trivial price difference between our two product lines, and yet in the picture they look exactly the same. I can see why people might be confused... Let me explain.

Luminook+ comes in two sizes, 'single door' and 'double door', just like regular Luminook, and it functions exactly the same way. The only difference is Luminook+ uses 'high-CRI' LEDs. Before explaining what that means and why it's important, let's have a brief science lesson on light and how we experience color:

Electromagnetic radiation is all around us. It's a naturally occurring phenomenon, and its wavelength varies from very long to very short. The human eye can perceive electromagnetic radiation between a wavelength of roughly 380 nm to 760 nm. We call this part of the spectrum 'visible light' or 'white light'. When light of a certain wavelength reaches our eyes, it's perceived as a specific color.

When visible light hits an object, three things can happen: the energy can be absorbed (and converted to heat), it can be reflected, or it can be transmitted through the object. When light is transmitted, it moves at different speeds depending on its wavelength and the object it's moving through. This is what causes the prism effect. Visible light, containing all wavelengths, hits the prism and different wavelengths travel through the prism at a different speed and angle, resulting in separate colors exiting the other side.

The way the human eye works is by detecting the reflected light that bounces off an object. If an object appears red, it's because it selectively absorbs all wavelenghts except red, which it reflects.

However, all sources of visible light are not created equal! The sun emits electromagnetic radiation across virtually the entire spectrum, meaning in the visible portion of the spectrum, every wavelength of light is present. As a result, an object will appear its 'truest' color under natural daylight. The sun is thus the gold standard, with a CRI (Color Rendering Index) of 100. The CRI rating of every artificial light source is calculated by comparing to the sun. By definition, no artificial light source can ever achieve a CRI of 100.

Poor quality lights (low-CRI) are lacking certain wavelengths of light in the visible spectrum. If a given wavelength isn't present to be reflected by an object, then we can't see it. This results in objects appearing to be a different color under poor quality lights.

High-CRI lights, on the other hand, more closely approximate the visible light from the sun. As a result, objects will appear closer to their 'true' color.

Now you understand CRI! The 'regular' version of Luminook has a very respectable CRI of 80+. However, Luminook+ takes it to another level with a CRI of 98+. LEDs with a higher CRI rating are more expensive to manufacture, and so that's why Luminook+ has to be more expensive. Rest assured, with either version of Luminook, you'll be getting vastly improved illumination of your enclosed space than whatever you have now. However, if you're planning on using Luminook in a clothes closet, under your kitchen cabinets, or really anywhere that color reproduction is important, you should consider Luminook+.