lighting. Monday , March 27th , 2017 - 16:39:01 PM
In Part 1, we were presented with a unique set of rules and restrictions for home lighting design for aging eyes to two purposes. First, to achieve home lighting design standards more suitable to aging eyes (which the literature allows begin to need extra light in their 40s). Second, to translate these new home lighting design standards into numerical targets of common metrics readily identifiable in the retail lighting marketplace.
Even though full spectrum light is not exactly like sunlight, it does provide an even distribution of wavelengths through the spectrum. Not all full spectrum lighting is as good as others, so two indexes have been created to help the consumer evaluate the quality of the product. One is the SPD or spectral power distribution, which measures composition of wavelengths from a given source. The SPD shows peaks (a great deal of light of that wave length) and troughs ( a lack of light of a certain frequency). The more uniform the curve of the SPD, the better.
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