Light Measurement Radiant Energy and Optical Energy Energy emitted, propagated, or received in the form of radiation is called “energy”, with the unit of joule (J). The quantity of light within the visible range integrated over time is called “optical energy”, with the unit of lumen-second (lm-s). Radiant Flux and Luminous Flux The power emitted, […]
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The Purpose of Lighting When taking photos with a digital camera, additional lighting is often necessary. For example, traffic cameras at intersections often flash to take photos. Similarly, in machine vision, lighting is necessary to capture high-quality images. The core of a machine vision system is image acquisition and processing, and lighting is an important
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