Fiber-Optic Cable to Specifically Direct Light

Here you can discuss different microscopic techniques and illumination methods, such as Brightfield, Darkfield, Phase Contrast, DIC, Oblique illumination, etc.
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DonSchaeffer
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Joined: Sun Mar 22, 2020 10:06 am
Location: Winnipeg, Manitoba, Canada

Fiber-Optic Cable to Specifically Direct Light

#1 Post by DonSchaeffer » Wed Jul 29, 2020 10:21 pm

Since I bought my microscope, I've been trying out stop filters, means of making shadows, and being able to see opaque subjects. I bought some fiber optic cable which finally arrived today. Now I'm working on the mechanics of creating a system (with no resources except pieces of plastic and tape). It's really a complicated problem to get the cable which, on one end, is pressed against a lamp, to get directed onto the subject in a stable way. Using some clips and velcro, I have had some limited early success without ruining my microscope.
These photos of specimens from a wild flower were made with the fiber-optics only--no other light source (40x objective).
2020-07-29_163009.jpg
2020-07-29_163009.jpg (242.93 KiB) Viewed 1902 times
2020-07-29_162841.jpg
2020-07-29_162841.jpg (192.77 KiB) Viewed 1902 times
2020-07-29_162657.jpg
2020-07-29_162657.jpg (158 KiB) Viewed 1902 times
Here's my setup.
setup.jpg
setup.jpg (201.71 KiB) Viewed 1899 times
Last edited by DonSchaeffer on Wed Jul 29, 2020 10:32 pm, edited 2 times in total.

MichaelG.
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Location: North Wales

Re: Fiber-Optic Cable to Specifically Direct Light

#2 Post by MichaelG. » Wed Jul 29, 2020 10:25 pm

Looks promising, Don

MichaelG.
Too many 'projects'

DonSchaeffer
Posts: 3331
Joined: Sun Mar 22, 2020 10:06 am
Location: Winnipeg, Manitoba, Canada

Re: Fiber-Optic Cable to Specifically Direct Light

#3 Post by DonSchaeffer » Wed Jul 29, 2020 10:30 pm

Thanks Michael. I still can't use it with the higher powered objectives. The lenses block the light beam.

DonSchaeffer
Posts: 3331
Joined: Sun Mar 22, 2020 10:06 am
Location: Winnipeg, Manitoba, Canada

Re: Fiber-Optic Cable to Specifically Direct Light

#4 Post by DonSchaeffer » Fri Jul 31, 2020 4:52 pm

In actual fact, I have a feeling that microscopes don't much like up-stage lighting. My microscope seems to respond better--make better use of light that passes through the condenser. I modified my use of the fiber-optic cable to pass it through the condenser via the side of the filter holder. Now it works with all objectives and doesn't get in the way of what happens on the stage.

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