Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

But as technology advanced, the slide and the slide projector became a relic of the past. Slide projectors stopped being manufactured altogether in 2004.

Usually slide projector bulbs emit much less UV than a fluorescent. I use these things in my day job and they are simply quartz-tungsten halogen bulbs and they start (very weakly) around 350 nm or so.