Methods and apparatus for providing luminance compensation

H - Electricity – 05 – B

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H05B 37/02 (2006.01) H05B 33/08 (2006.01)

Patent

CA 2591133

Methods and apparatus for generating two or more different colors (e.g. red, green, and blue) or color temperatures of light over a significant range of different saturations or different color temperatures, in which luminance compensation is provided. In one example, generated light is compensated, at least in part, for the "Helmholtz-Kohlrausch" (HK) effect, which models the perception of different brightnesses for different colors or color temperatures, notwithstanding identical luminances. In another example, lighting apparatus (100) including one or more LEDs (104A, 104B, and 104C) to generate two or more different colors or color temperatures of light are configured to provide luminance compensation so as to mitigate, at least in part, the HK effect.

Cette invention concerne des procédés et un appareil permettant de générer au moins deux couleurs ou températures de couleur différentes de lumière sur une gamme importante de saturations différentes ou de températures de couleur différentes avec une compensation de luminance. Dans un exemple, la lumière générée est compensée, au moins en partie, pour l'effet "Helmholtz-Kohlrausch" (HK),ce qui modélise la perception de différentes luminosités pour différentes couleurs ou températures de couleur, malgré des luminances identiques. Dans un autre exemple, l'appareil d'éclairage, qui comprend une ou plusieurs diodes électroluminescentes chargées de générer au moins deux couleurs ou températures de couleur différentes de lumière, est conçu pour compenser la luminance de façon que l'effet HK soit atténué, au moins en partie.

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