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Quantifying Light: Intensity, Uniformity Hold the Key

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When an application requires an illumination source, the designer can provide an optimal solution if the application’s attributes are described in light intensity and uniformity values at the field of interest.

Steven Giamundo, Fiberoptics Technology, Inc.

Intensity and uniformity can be described using different physical attributes, which makes interpreting requirements somewhat confusing. This article intends to provide an explanation and serve as a guideline to help application engineers specify uniformity and intensity values with optimal meaning. Most lighting specifications fall within three basic categories: reflected, transmitted and emitted values. All values must be measured from a specific direction, over a defined area and at a known distance. Furthermore, these values are quantified using two basic systems: photometric or...Read full article

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