Microscope Forums .com

Hi Ajo,

There is something called 'blue tack', I think, that is a residue free adhesive that may be of value in the darkfield condenser project. It would hold the coin in place and could be removed without causing damage or leaving a big mess.
I read about this in a forum and have not personally tried it.

g2b2

__________________
A pixel is worth a thousand words but it takes a thousand words to explain a pixel. g2b2

I used a coin and put it in the filter holder. Here is my solution:

One-Penny Darkfield Illumination Filter DIY Science and Electronics Projects

does this let the light come around it or ami totaly wrong could someone explain please ?

The point is to get the light to illuminate the specimen but miss a direct hit of the objective. With the darkfield stop the light comes to the specimen at a sharp angle, away from the objective. Check this link and can scroll down to "How does darkfield illumination work":

One-Penny Darkfield Illumination Filter DIY Science and Electronics Projects

There are a couple of diagrams of the light path with and without a darkfield stop.

- Alex

Thanks a lot avtanski