Led lamp incorporating remote phosphor with heat dissipation features

A light emitting diode (LED) based lamp, comprising:

• an LED light source;
• a planar phosphor arranged remote to said light source such that light emitted from said light source passes through said phosphor and is converted by said phosphor;
• and
• a thermally conductive path to conduct phosphor conversion heat away from said phosphor and to dissipate said heat.

A lamp, comprising:

• a heat sink structure;
• a light emitting diode (LED) based light source;
• a conversion material remote to said light source and arranged to absorb light from said light source and re-emit light in different wavelengths;
• and
• a first thermally conductive path to conduct conversion generated heat away from said conversion material to said heat sink.

A lamp, comprising:

• a light source;
• an optical cavity comprising a phosphor carrier over an opening to said cavity, said light source mounted in said optical cavity remote to said phosphor carrier with light from said light source passing through said phosphor carrier, said optical cavity further comprising reflective surfaces to reflect light from said light source and said phosphor carrier;
• and
• a thermally conductive path to conduct phosphor conversion heat away from said phosphor and to dissipate said heat.