The startup time of a lamp is the time a light source needs in order to illuminate a minimum of 60% of its total capacity.

The length of this is dependent on the type of lamp.

Carbon filament lamps, Halogen lamps, or LED lights are pretty much instantly at their fullest brightness, whereas an energy-saving bulb may take an average of 90 seconds to light up at its highest capacity.

Are you looking for a lamp to apply in your pantry? Then the first three examples are the best choice in order to immediately have the full amount of light necessary.