Pages: [1]   Go Down
Author Topic: Making a fibre optic light source  (Read 948 times)
0 Members and 1 Guest are viewing this topic.
UK
Offline Offline
God Member
*****
Karma: 1
Posts: 530
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi all,

I'm looking at building up a light source for a bunch of fibre optic cable - I need about 100-150W in terms of typical halogen bulb power...

However, I'm not sure about how to focus this light into a fibre optic bunch - some have mentioned torch lenses etc, but will that not simply melt the end of the fibre bunch? Or perhaps a magnifying glass, that focuses the light onto a mirror, which reflects the light into the source - that way, should a large amount of the heat be dissipated in the mirror?

Any ideas / suggestions appreciated.

Cheers
« Last Edit: April 03, 2013, 03:15:21 am by jtw11 » Logged

UK
Offline Offline
Faraday Member
**
Karma: 99
Posts: 4153
Where is your SSCCE?!?!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

What are you actually trying to achieve?

100-150W is an awful lot of power - why do you need so much?
Logged

Get 10% off all 4D Systems TFT screens this month: use discount code MAJENKO10

Norfolk UK
Offline Offline
Edison Member
*
Karma: 66
Posts: 2482
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I have a fibre optic xmas tree and it uses one of these to focus light into the bundle through a colour wheel. Not as powerful as you wanted but maybe a cluster of them would do the job.
Logged

There is no such thing as a stupid question but there are a lot of inquisitive idiots.

UK
Offline Offline
God Member
*****
Karma: 1
Posts: 530
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I use fibreoptic endoscopes for work, and have just got hold of an older Pentax 'scope for filthy cheap money, as it just needed a few minor repairs but didn't come with a light source.

~150W is the typical power level for halogen light sources for this purpose, but I can deal with less.

Quote
I have a fibre optic xmas tree and it uses one of these to focus light into the bundle through a colour wheel. Not as powerful as you wanted but maybe a cluster of them would do the job.

Do you actually focus the light into the fibre bundle, or just point the lamp at the end? My fibre connector has a 3mm diameter opening for light, hence thinking I need a little focus. Just wondering if a high power LED would do the job.

Something like this, driven with a 12V source.
« Last Edit: April 03, 2013, 02:33:27 pm by jtw11 » Logged

Norfolk UK
Offline Offline
Edison Member
*
Karma: 66
Posts: 2482
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
I have a fibre optic xmas tree and it uses one of these to focus light into the bundle through a colour wheel. Not as powerful as you wanted but maybe a cluster of them would do the job.

Do you actually focus the light into the fibre bundle, or just point the lamp at the end? My fibre connector has a 3mm diameter opening for light, hence thinking I need a little focus. Just wondering if a high power LED would do the job.
The LED bundle is about 2" diameter at base so needs no focusing. The dichroic lamp reflects most of the light forward into the fibres but allows the heat to pass out the back. Maybe a high power LED would do the job as the point source is quite small or as you have said a lens to focus a wide light source down.
Logged

There is no such thing as a stupid question but there are a lot of inquisitive idiots.

Pages: [1]   Go Up
Jump to: