12/21/2023 0 Comments Nir color spectral iot![]() On the other hand, highly energetic UV radiation UV can harm our tissues, destroy our genetic information, and cause cancer. UV spectral regions provide energy for Vitamin D production. As shown by the UV/VIS/NIR/IR pictures our bodies absorb and react very differently to each spectral region. This unfortunately coincides with energy saving NIR reflecting window treatments and skin cancer concerns reducing our time outdoors. In the last 10 years we have begun a process that eliminates virtually all NIR/IR sources from our artificial lighting environment. Over the last 40 years we have begun to shift to “Just Visible” (JV) lighting via fluorescent but with still significant NIR/IR from incandescent light sources in our homes. Fortunately, through most of this timeframe we were a substantially agrarian society with significant time in the sun. This spectral reduction started 150 years ago with filament sources which provided copious amounts of NIR/IR but very little UV/blue content needed for melatonin stimulation. This change has been driven by cost, technology, and energy savings but appears to not be supported by any health or wellness benefits.įigure 1: The lighting community is in the process of radically narrowing the spectral range of our artificial lighting environment compared to what our cells have evolved under (Credits: Nick Spiker, What HCL Baseline Should We Use? This raises several key issues associated with what is the optimum HCL baseline or even if there is just one HCL baseline for everyone.Īs shown in Figure 1, the lighting community is in the process of radically narrowing the spectral range of our artificial lighting environment compared to what our cells have evolved under. ![]() In that same time frame, ethnic groups have migrated from their evolutionary regions. In a very short evolutionary time frame (200 years) we have moved from a predominately agrarian society where we spent 90% of our time in the sun to the present where we spend 90% of our time under artificial lighting (EPA estimate). Resources | LpR Article | Light Generation | LEDs | Human Centric Lighting | A Near Infrared Enhanced LED Lighting Approachįor millions of years the sun has provided approximately 90% of its energy in Near Infrared (NIR) and Visible (VIS) wavelengths with the remaining percentage being roughly divided between ultraviolet (UV) and mid/long infrared (IR). He explains the background of this idea, how it also improves the quality of visible light and discusses the health benefits. Scott Zimmerman, CEO at Silas, presents a new approach that adds NIR radiation to LED illumination. Some research and the evolution of humans show clear evidence for positive effects of this kind of illumination. Some new proposals are going beyond the approach of providing just visible light in adequate quality, but also to providing invisible radiation, UV and/or NIR that support health and well-being. While HCL is not clearly defined, a common understanding is that this is light and lighting that supports health and the well-being of humans. A Near Infrared Enhanced LED Lighting Approach With the evolution of LED lighting, one topic has come more and more in the focus of the lighting industry: Human Centric Lighting (HCL).
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