Main advantages of halogen bulb against incandescent bulb are higher light output (to 25lm/W), longer lifespan (4000-6000h), optimal light control, small size, more constant light flux during the lifespan, higher colour temperature – bright white light of 3000K. There are editions with higher colour temperature (4000-6000K) for special purposes.
New technologies anable aditional increasing of light flux. Application of special infra red coating (IRC) makes possible returning of part of IR emition back to the filament. It is then used for heating the filament and thus decreases the need for electricity. This way the light flux is increased for 30%.