Introduction: UV Light Photography

Well, in the past few month i have been interested in a different part of Sunlight.photography...wawelenght 260 -300 nm...forensic photos,
and had to prepare my equipment  for this, as follows...

Step 1: Source

The source of UV light can be normal bulb but with Woods-glass, fluorescent bulb with the same glass,  and UV led-s. The first two use high Voltage, which was inconvenienced for my needs, so I purchased on E-bay UV led-s  260-400nm.
More on UV, phosphorescence and photography  you can find on Web.


This UV led's has to be mounted in a waterproof housing ...

Step 2: Preparation

I have to construct housing - it has to be plexiglas, tube with O-ring covers. LED has to be in a circle to get strong, even emission UV light.

First drawings, and planning, and..voila.

I took plexi plate 4mm thick and cut of circle,diameter to fit tube. drill holes for UV led's 8mm and 5mm, according plan, to get holder for led's...

Step 3: Led's Holder

Two different types of led's ... 8mm 390-410 nm and 5mm 370nm, parallel wired connection, so each got 3,6V and 20 mA, according producers tech.spec. I choose NiMh 2000mA rechargeable batteries as power source - direct connection, 3 pc's x 1.2V = 3.6V.

Step 4: Housing

I choose two different diameter plexi tubes, one which fit to hold 3 battery holder flat, and bigger one to hold led's.
Tube cover with O-ring seal for bigger one and smaller are glued together facing opposite each other. Smaller has no O-ring seal and smaller tube I glued direct to them. I cut simple glass mirror as a bottom under led's holder.

Step 5: Assembling

Well, further was little easier.  From pictures you can got idea about all this project. Switch is added on the back cover, small 4mm shaft, O ring seal, micro switch an rotating plexi ex-centar. Mirror glass reflect all back emitted light forward,

Step 6: First Results


Of course,  I took several pictures to see what I shall get.  Before diving...I at last few pictures under water..This UV underwater photography shall be very interested field for future research...


Limitation is  weak light, has to be photograph in a dark with  long exposures, night pictures, avoiding any "daylight" intrusion and finding objects, flora and fauna,  with Phosphorus,  etc...etc.

So, I made this for me.
No any responsibility for yours.

Sincerely yours
Kreaimir Pregernik, dipl.ing

Comments

author
Ben DangerH (author)2017-02-13

I love this, i look forward to making one

author
Lectric Wizard (author)2012-09-04

Very nice project, well done. I like the pattern you used for the LEDS. Could you add a PDF of the layout so it prints out the correct size & shape ?? THANKS!

author
istoyanov (author)2011-07-16

is that a bulsatcom remote?

author

It is...sat remote.. under normal day light and under UV light 390nm.

author
Hisart (author)2011-07-15

Beautiful work!

What type film are you using? With that much light you should not have to do long exposures.

author
KresimirPregernik (author)Hisart2011-07-15

Digital camera 7MB Oly 350

author
Hisart (author)KresimirPregernik2011-07-15

Ah, okay. :D

I just spotted your "UV light photography II" which looks like it solved your problem. ;-D

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