• Please use real names.

    Greetings to all who have registered to OPF and those guests taking a look around. Please use real names. Registrations with fictitious names will not be processed. REAL NAMES ONLY will be processed

    Firstname Lastname

    Register

    We are a courteous and supportive community. No need to hide behind an alia. If you have a genuine need for privacy/secrecy then let me know!
  • Welcome to the new site. Here's a thread about the update where you can post your feedback, ask questions or spot those nasty bugs!

Zinnia: UV Induced Visible Fluorescence using Nichia UV LEDs

Dr Klaus Schmitt

Well-known member
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:
large.jpg


White Zinnia in UV induced visible fluorescence, variant 1:
large.jpg


White Zinnia in UV induced visible fluorescence, variant 2:
large.jpg


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 ;-)

.
 

Dr Klaus Schmitt

Well-known member
Her comes more, "pretty in pink"

Pink Zinnia in visible light:
large.jpg


Pink Zinnia in UV induced visible fluorescence, variant 1:
large.jpg


Pink Zinnia in UV induced visible fluorescence, variant 2:
large.jpg
 
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.
 
Top