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Registered Member #618
Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
If u want lots of LED's any kind even I'd say got to everyones personal favorite website...Ebay, a few years back I managed to buy something like 300 uv leds for like 20$ us.
Registered Member #211
Joined: Sun Feb 19 2006, 05:33PM
Location:
Posts: 27
Wow, awesome link! Depending on what lens material you were thinking of using, don't forget that wavelength and opacity relate strongly when you enter the UV bands. UVA light not be a problem, but I'd at least try to use un-tinted glass over plastic. Optical grade PMMA, if you can get it, is used right down to quite small wavelengths so they should be okay. As for uses, there are plenty of UV reactive pigments, photophosphorescent items, you can attract flying insects with them (as for a bug-zapper), light up fluorescent items, rhodamine dye, PC internal cooling water additives etc. Small UV sources always have their uses. A few similar IR emitters would turn an otherwise useless digital camera to a semi-functional night vision aid. This is useful if you like taking photos of wild animals or creatures that will flee from light. Cheers! -Petezel
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
According to Nichia's Shigeki Okauchi, General Manager of the Business Planning Department for Optoelectronic Products:
"Nichia's 5 W 365 nm LED array module, which is now under development for applications such as inkjet printing and photolithography. Nichia's roadmap for the development and applications of UV LEDs is based on low-power devices emitting between 3 mW and 10 mW at a central wavelength of 365 nm or 375 nm. Such low-power devices will be used for photo-catalytic deodorizing in air conditioners and refrigerators as well as identifying counterfeit banknotes.
"The other area of interest is high-power output devices, typically in the range of 100 mW to over 5 W, at a wavelength of 365 nm. Applications include hardening or curing resins as part of the assembly process of plastic lenses in digital cameras and optical pickups in DVDs and CDs. During fabrication of DVDs, the UV LEDs will be used for 'gluing' or fixing plastic components to metal bases. We want to replace traditional mercury lamps with solid-state UV LEDs.
"Further, by integrating UV LEDs with water cooling, we can produce UV-LED modules with an output power of over 5 W at 365 nm. Applications include replacing mercury lamps in processes such as inkjet printing and photolithography. We are aiming to have a full line-up of products by 2008.
"In the future, applications of our UV LEDs will expand into biotechnology. For example, 365-nm light is thought to be particularly useful for DNA sequencing."
Registered Member #1630
Joined: Sat Aug 09 2008, 11:36AM
Location: Seoul Korea
Posts: 115
Ok, I have some knowledge in this area and I'll clear up a few things 400-405nM is the start of the long wave UV. Currently there are LEDs including blueray laser which operates in to 400nM range and will fluoresce things quite well.
IF you want to make a UV gun use a HID lamp and a black (woods glass filter) Be careful as this will get really hot during use-- use caution!!!
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high power UV emitter - possible uses
