A team of researchers in Japan has developed a new way to check the quality of medicine tablets as they are being made. This system uses special light to inspect the tablets without damaging them, helping to spot any hidden flaws or wrong ingredients. Right now, there aren’t many good tools that can do this kind of detailed check while tablets are moving through the production line. The researchers used a special camera and light setup that works better than older technology. They tested it on three different medicines: a fever-reducing drug, a blood thinner, and a sedative. The system is small and easy to add to existing production lines. It can check tablets as they move quickly, even if they’re thick or have a high concentration of medicine. This could help make sure tablets are safer and of better quality. The research was published in a scientific journal called Light: Science & Applications.