Wouldn't it matter how narrow the laser beam is? 50mW spread out over a larger surface area sounds like it should be safer. Of course, then the question is whe

Wouldn't it matter how narrow the laser beam is? 50mW spread out over a larger surface area sounds like it should be safer. Of course, then the question is whether that also comes with an equal reduction in sensitivity, or whether a larger sensor can compensate for that.