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UV/IR Thermal or Xray Photography Humans happen to use visible light naturally but now we can go beyond the usual wavelengths we appreciate, to find out more about our world and ourselves.

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  #1  
Old September 14th, 2012, 05:52 PM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Default Zinnia: UV Induced Visible Fluorescence using Nichia UV LEDs

Well, some people wonder what could be done with Nichia based flashlights / torches which use the single dice NCSU033A (older) or NCSU033B (newer) chips.

Well, here is my example without much ado...

White Zinnia in visible light:


White Zinnia in UV induced visible fluorescence, variant 1:


White Zinnia in UV induced visible fluorescence, variant 2:


I hope that serves as an example what could be done with those UV flashlights, but of course those are useful for many different applications such as stimulating visible fluorescence, reflected UV photography, forensic, dermatological and dental examinations and photographic recording, curing of UV glue / bonding, as well as leakage detection etc.

... or simply just pretty pictures ;-)

.
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Old September 15th, 2012, 02:15 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Her comes more, "pretty in pink"

Pink Zinnia in visible light:


Pink Zinnia in UV induced visible fluorescence, variant 1:


Pink Zinnia in UV induced visible fluorescence, variant 2:
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http://photographyoftheinvisibleworld.blogspot.com/ my ultraviolet (UV) work
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Old September 15th, 2012, 05:23 PM
Maris Rusis Maris Rusis is offline
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Brilliant! But please give some technical details; what UV excitation wavelengths, what barrier filters, what chemical species are flourescing, and so on? Years ago I was involved in pioneering aspects of fluorescence microscopy of biological specimens and subject remains truly fascinating.
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