Hello All,
So am using UV LEDS from Radio Shack* Using them, I can see the UV strips on US
currency bills, but not their color. The light does work as I see other hidden items on credit cards, etc.
But I really want to be able to see the COLOR of the strips in the bills.
My research and help from other people suggest that I need to find LEDs with a LOWER wavelength.
Does anyone here know what the PROPER wavelength would be? And are such LEDs available for sale? My online research has found LEDs that are lower wavelngth than the Radio Shack ones, but they come encased in in metal chambers, are $50 a pop, etc.
I have to believe that the answer for what I see is out there. Just can't find it myself with Google.
Many thanks ahead of time for any hints or answers,
Sergio
Radio Shack UV LED data
High visibility, T-1 3/4 (5mm)
Intensity: 280mcd (typical), wavelength: 395nm (minimum), 410nm (maximum)
Viewing angle: 30°
FW current: 20mA; FW supply: 3.2 (typical), 3.8V (maximum)
RoHS compliant
So am using UV LEDS from Radio Shack* Using them, I can see the UV strips on US
currency bills, but not their color. The light does work as I see other hidden items on credit cards, etc.
But I really want to be able to see the COLOR of the strips in the bills.
My research and help from other people suggest that I need to find LEDs with a LOWER wavelength.
Does anyone here know what the PROPER wavelength would be? And are such LEDs available for sale? My online research has found LEDs that are lower wavelngth than the Radio Shack ones, but they come encased in in metal chambers, are $50 a pop, etc.
I have to believe that the answer for what I see is out there. Just can't find it myself with Google.
Many thanks ahead of time for any hints or answers,
Sergio
Radio Shack UV LED data
High visibility, T-1 3/4 (5mm)
Intensity: 280mcd (typical), wavelength: 395nm (minimum), 410nm (maximum)
Viewing angle: 30°
FW current: 20mA; FW supply: 3.2 (typical), 3.8V (maximum)
RoHS compliant