"Beams of light" is commonly used to describe rays of light that emanate from a source or reflects off a surface, but there are several synonyms that could be used to convey the same meaning. Some alternatives to the phrase "beams of light" include "shafts of light," "streams of light," "rays of sunshine," "streaks of light," and "glowing rays." These synonyms could be used interchangeably depending on the context of the sentence. It ultimately comes down to how the writer wants to convey the emotion, feeling, or imagery to the reader.