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gobiodon

Member Since 02 Apr 2004
Offline Last Active May 16 2013 12:55 PM

Posts I've Made

In Topic: Another fibersnoot

06 February 2013 - 07:17 AM

But I wouldn't call it snoot, because it has no snoot effect (you may change the diffusor to a nozzle to get snoot effect). You split the light in an an easy to adjust way. It's like a twin flash.
I will make the arms a bit longer to be able to do some side lighting.

In Topic: Another fibersnoot

06 February 2013 - 07:11 AM

Hi Marcell,
I looked for Loc-Line in Europe, but eventually I bought it directly from ModularHose.com Good service, very responsive to some questions I had. Shipping rates are negotiable, too.


Thanks for the quick reply. I also used ModularHose.com before. They have good prices but In Germany I had to to pay VAT and custom fee and it took a bit long to get the items. That's why I was looking for a European distributor with a good on-line shop. Once I ordered from a local dealer but at the end it was as expensive as ordering from the US.

Your sample photos look promising.

Best

Marcell

In Topic: Another fibersnoot

06 February 2013 - 04:24 AM

Hi Rob,

Very cool project. I had a similar one but with less fibers. For the summer I'm planning to make a bigger one like yours (maybe with 3 arms). I had difficulties to find a proper nut for fixing the screw part of the loc-line. (It's not standard in Germany) Can you tell me your source.
Do you have good on-line ordering option (in Europe) for Loc-line??
What kind of cap did you use?
Many thanks in advance

Marcell

In Topic: Home-made Fibre Optic Cables

11 December 2012 - 01:58 AM

No, it depends on the internal reflection. The light is kept in the fiber by transparent cladding material with a different refraction index. There is a critical angle when the light is not reflected but leaks out. It actually defines the acceptance cone and also the numerical apperture. When we band the fibers too much the light travells not at a steep angle and leaks out. Actually in my new optical fiber based ring/rim adapter I can see the light leak due to too much bending.

It's similar to the comparison of flat port to dome port. At certain angle our wide angle lens can't see through the flat port but when the surface is bent (dome port) the light can come in (or go out).

In Topic: Home-made Fibre Optic Cables

10 December 2012 - 05:15 AM

I don't understand why that would be unless you generate micro kinks in the fiber. If the cladding is correct and undamaged, I don't see why there would be a loss. I understand what will happen if I fracture the fibers, but when I use a power meter to measure the throughput of the fiber coiling it does not change the output in any measurable way.
Bill


Ther is an allowable bending radius but I think there is some slight light loss even before:
http://thefiberopticstore.com/FAQ/endglow/bend.htm
In the coil you have many bands so the light loss is accumulating but it shouldn't be that big problem.

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