Ideas tagged with lens

Using a lens instead of a mirror for collimating light in display holography

When recording display holograms, the traditional method of collimating (making parallel) a diverging light beam is to use a parabolic mirror. This is a good method for the least light loss and the most perfect collimation, but the mirror needs to be an off-axis parabolic mirror, making it expen...

By Kaveh Bazargan