The idiomatic expression "to shine a light on something" means to bring attention, focus or clarity to an issue, problem, situation or topic. Full definition
Researchers can then activate these cells by shining light on them through optical fibers. (quantamagazine.org)
We look forward to working with you to uncover the unique value in your company and shine a light on it for the right buyer to see. (kenyongroupllc.com)
An officer opens it, peers in and shines a light on you while you're going to sleep. (politics.co.uk)