Sunny-cloudy scale for setting the color temperature of white light

摘要

A control (410) for adjusting (420) the color output of a white light (430) provides an interface (210, 220, 301) that does not refer to, or depend upon an understanding of, color-temperature. The user interface control (210, 220, 301) uses the analogy (260, 270) of the light produced on cloudy days and the light produced on sunny days to distinguish between a low color-temperature output and a high color-temperature output. Using this cloudy-sunny description (260, 270) of the range of control (155, 255) of the light output, the terms "color" or "color-temperature" need not be introduced in the description of the output of a "white" light source (430).