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UV flashlight

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Firsh

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A rayfoss 20mW violet (405nm) pen is on the way and I'm guessing if it can be converted to defocused flashlight kinda thingy for UV purposes (money testing and fooling around without the hazards of a focused laser). I'm not tech savvy so I was thinking about some easy, temporary solutions.

Or is it just better to get some uv flashlight that are really UV (below 350-370 nm) that are made for this purpose?
 





Bionic-Badger

Bionic-Badger

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I've got a 365nm high powered LED that could probably be part of a flash light. It eats about 10W, and puts out about 200mW of light as far as I can tell (might just be heat too!) The problem with UV is that it puts out relatively little UV for how much power is put in because the light has such a short wavelength.

If you want a cheaper/better UV source, get a fluorescent black light. They cost less, put out more UV light at the right wavelength (~365nm), and are just a better source overall.
 
chipdouglas

chipdouglas

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you can use any high or low powered 405nm laser for uv purposes but you need to wear any uv protecting sun glasses too. they block out the scatter and show the floresence. i am not saying to use uv sunglasses as laser protection.

michael.
 
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Firsh

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That's why the guys on CSI look at the light through some kind of (orange?) glass?
 
chipdouglas

chipdouglas

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they could be any color. but that is also why mechanics uv detection kits come with dye, a light and glasses. but any 100% uv protected sun glasses will work. they just wont be very safe from a direct beam hit. my uv sun glasses take my 135mw 405nm laser and take the power down to 25mw. still way above the safe threshold for direct exposure.


michael.
 
Cyparagon

Cyparagon

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Firsh said:
A rayfoss 20mW violet (405nm) pen is on the way and I'm guessing if it can be converted to defocused flashlight kinda thingy for UV purposes...
Click to expand...

I've got some bad news. That's barely brighter than a 5mm UV LED keychain.

UV_Purple_Light_390-395nm_LED_Keychain.jpg
 
Flaminpyro

Flaminpyro

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I have a brand new Proton UV that puts out 1watt at 405nm and another one at 370nm and both are for sale they are $40.00 each and run on one "AA" 1.5v cell
on line I think they are $50.00
29zyhb4.jpg
 
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J

Jaxz

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Flaminpyro said:
I have a brand new Proton UV that puts out 1watt at 405nm and another one at 370nm and both are for sale they are $40.00 each and run on one "AA" 1.5v cell
on line I think they are $50.00
29zyhb4.jpg
Click to expand...
Hi, I need to create an interior fake sunlight for my use, when I need to play guitar in a hall infront of lots of audience but I am not sure if what you have is what I want. Let me explain more.

I am wearing prescription spectacles. I need a sunglass type and so far I've got 2 options, either to use prescriptino sunglasses or to use transition lens. I cannot use sunglasses in a concert hall is because when the lights turns dim, my visibility drops. So now I need a fake sunlight, which is to use harmless UV on the stage to shine at my transition lens, so as to make my transition lens turn dark infront of my audience without having to wear any sunglasses. I need to be able to see with my prescription spectacles at the same time simulating a sunglassse in front of my audience.

May I know how is your so called Proton UV light? Thanks lots
 
chipdouglas

chipdouglas

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^^^ the do for sure. i've done it on my gpas lol... but you have to be careful of how strong a laser. you can permanently burn an image into transistions.


michael.
 
LarryDFW

LarryDFW

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Firsh;

I have built hundreds of UV lights that might interest you.

My current model is a Hi-power 6 Watt (input) UV LED light with deep reflector:

uv8s1.jpg


This light has the longest throw due to better focusing.

The battery is a 2600mah Sanyo #18650 of course.

I have compared it to my 600mw 12X BluRay laser when defocused.

LarryDFW
 
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C

CrossOut

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lasers tend to distort the coloring of the object it is hitting and also coming from a laser diode, the beam will project lots of small particle like spots which a flashlight wont. the light emitted from a laser is much different than that from a flashlight. you could use it to light a room but TBH it doesnt really look as nice as if you were to have a ton of UV LED's lighting it.
 
LarryDFW

LarryDFW

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Firsh;

Most of the common UV LED lights are 395nm.

They produce the "best bang for the buck".

A 3 watt UV light only is ~ $30.

The 6 watt UV light only with better focus is ~ $150.

Both are powered by #18650 cells (different capacities)

LarryDFW
 
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