Finally, in 1993 Shuji Nakamura released the blue LED to an empty market, and then went on to develop and release his creations shortly there after. Now modern science has produced many different varieties of 473nm pointers, for personal and professional applications.
The blue beam is more difficult to produce that that of green or red, so this is why the price tag attached to high quality lasers can be a bit more steep than your standard pen unit. But when quality and brilliance are coordinated correctly into a hand held product, you and everyone witnessing its elusive beam will be genuinely impressed.
But do not despair! Persistent advances in technology and constant market competition is slowly but surely improving the quality of products while at the same time decreasing the price. There is a constant battle for high power blue superiority and improvements are fast and persistent. In just … Read the rest