Light emitting diode with high melanopic spectral content

A tunable lighting system comprising:

• a first lighting device configured to emit a first light, the first light having a first m/p ratio;
• and
• a second lighting device configured to emit a second light, the second light having a second m/p ratio that is smaller than the first m/p ratio, the tunable lighting system being configured to emit a third light, the third light including at least one of the first light, the second light, or a combination of the first light and the second light,
• the first lighting device comprising:
• a light source, the light source including a royal-blue light source configured to emit a royal-blue light with a peak wavelength between 435-460 nm and a blue light source configured to emit light with a peak wavelength between 470-496 nm;
• and
• a wavelength converting structure disposed in a path of the royal-blue light and the blue light, the wavelength converting structure including a mixture of a green phosphor and a red phosphor,
• the green phosphor configured to absorb a first portion of at least one of the royal-blue light and the blue light, and to down-covert the first portion to green light;
• and
• the red phosphor configured to absorb at least one of a second portion of at least one of the royal-blue light and the blue light and a portion of the green light, and to down-convert at least one of the second portion and the portion of green light to red light;
• the wavelength converting structure being configured to emit the first light, the first light including the green light, the red light, an unconverted portion of the royal-blue light, and an unconverted portion of the blue light.