The beams generated are of high light emitting power.H4, H7 and H13 are some of the types of dual filament halogen bulbs. For instance, Phoenix Lamps, an India based lighting manufacturer ...

No designer refit is complete these days without halogen ... white hot. Incandescent lamps are notoriously inefficient, since almost all the electrical energy is converted into heat rather than light.

Some generate light by a white hot filament (incandescent lamps, such as halogen), some by an electrical discharge through a gas (such as fluorescent lamps) and some by the passage of electrons ...