What is lumos?

"Lumos" can refer to several different concepts, depending on the context:

1. Harry Potter Universe: In the world of Harry Potter, "Lumos" is a spell used to produce light, emanating from the wand of the caster. It is commonly used by characters in the series to illuminate dark areas.

2. Lumos Foundation: This is an international non-governmental organization founded by author J.K. Rowling. The Lumos Foundation focuses on child protection and works to end the institutionalization of children globally, promoting family care as opposed to orphanages.

3. Lumos Networks: This was a telecommunications service provider in the Mid-Atlantic region of the United States, offering a range of services including broadband, fiber-optic internet, and other telecommunications services. It has been part of various mergers and acquisitions over the years.

4. Technology Products: "Lumos" is also a name associated with a variety of tech products and startups. For example, there are smart helmets for cycling and commuting that integrate lighting and signaling technology to increase safety for riders.

If you can provide more context, I can give more specific information related to what "Lumos" might refer to in your case.