Reflectance factor - PowerPoint PPT Presentation

CIE colorimetry

CIE colorimetry. The colour equation Condition 1 : 2° bipartite visual field, central fixation and dark surround. Matching (reference, primary) stimuli: Red (R): 700 nm, Green (G): 546,1 nm and Blue (B): 435,8 nm. Colour matching experiment. CIE colorimetry. The colour equation

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Chapter 3 Measuring / Testing Optoelectric Devices

Chapter 3 Measuring / Testing Optoelectric Devices. Luminous Intensity 1 candela (cd) = 4 π lumens (lm) Equivalent to one lumen per steradian (1 lm/sr) Data Sheet for LED Red LED has I v = 70 mcd (millicandelas) How many lumens is this? 70 mcd = 0.88 lm

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