How manylight bulbs have been invented?

The exact number of light bulbs invented is difficult to determine, as many inventors and companies have created various designs and types over the years. The most notable early versions were developed by Thomas Edison and Joseph Swan in the late 19th century. Since then, innovations have included incandescent, fluorescent, halogen, and LED bulbs, among others, resulting in thousands of unique models and variations. Each type has further adaptations, making the total number of light bulb inventions quite extensive.