Definition of additive color process

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Photonics Dictionary

additive color process: The additive color process refers to the method of creating color by combining different wavelengths of light.

This process is fundamental in various applications, particularly in:

Light emitting devices: Such as screens (TVs, monitors, smartphones) where red, green, and blue (RGB) light sources combine to produce a broad spectrum of colors.

Projection systems: Where light beams are overlaid to form images, utilizing RGB projectors or LED systems.

Photography and printing: Where RGB color models are used in digital imaging and in the prepress stage before converting to subtractive color models for printing.

In additive color mixing, red, green, and blue are considered primary colors. Mixing different intensities of these primary colors results in the perception of a wide array of colors, with full intensity of all three primaries producing white light. This process contrasts with subtractive color mixing, which involves mixing pigments (such as in painting or printing) where combining primary colors like cyan, magenta, and yellow subtracts specific wavelengths of light, resulting in different perceived colors.

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