New Kingbright UV LEDs are suitable for this and many other applications. Even though it may seem that they do not glow at all at first sight, they are the genuine UV light sources.
SMD LED with lens concentrate the light into a smaller space, that´s why they´re more suitable for some applications than common LEDs.
Probably the world´s smallest SMT LED with a package size of 0.6x0.3x0.2 mm is so small that it can be used to create various symbols, pictograms and displays.
All necessary can be usually found in datasheets. However if you choose a LED for a bigger project, it´s often better to check it twice ...