Color tunable light source

A light source comprising:

• a first light emitting component which emits light at a first wavelength;
• a second light emitting component which emits light at a second wavelength different from that of the first wavelength;
• and
• phosphors positioned to receive the light emitted by the first and second light emitting components, the phosphors including:
• a first phosphor which absorbs a part of the light from the first light emitting component and emits light of a third wavelength, and
• a second phosphor which absorbs a part of the light from the second light emitting component and emits light of a fourth wavelength, the second phosphor being excited relatively less by light of the first wavelength than by light of the second wavelength, the phosphors being dispersed in a medium which contacts and encapsulates the light emitting components.

A method of changing the color of light comprising:

• providing a first light emitting component which emits light of a first wavelength, a second light emitting component which emits light of a second wavelength, a first phosphor which absorbs a part of the light from the first light emitting component and emits light of a longer wavelength, and a second phosphor which absorbs a part of the light from the second light emitting component and emits light of a longer wavelength different from the wavelength of the light emitted by the first phosphor, the second phosphor relatively less affected by light of the first wavelength than by light of the second wavelength;
• adjusting power supplied to at least one of the first and second light emitting components separately from the other of the first and second light emitting components such that the amount of light emitted by the at least one of the first and second light emitting components is adjusted;
• and
• combining the light emitted by the first phosphor and the second phosphor.