i have a class and the professor uses a laser to point onto a very large computer screen mounted in the wall. its one of those projection screen but the screen i believe is glass and the projector is being projected from somewhere behind the wall not on a ceiling like most projector. overall i believe its just the bright light through glass that is causing the laser to be unseeable. when she points it on walls its ok but once it hits the screen its very hard to see. to make a long story short i want to know is there a laser out there that can cure the problem because its hard for the myself and the rest of the class to see and i'm turning to CPF to help me out here. thanks for any inputs.