Re: How can I build a simple Microscope




"Johannes Swartling" <johannes.swartling@xxxxxxx> wrote in message
news:dec8lh$r06$1@xxxxxxxxxxxxxxxxxxxxxxx
> "G8 | 8======D" <lijie0210@xxxxxxxxx> wrote in message
> news:1124701324.977464.179030@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > PS: we need to take the picture with our webcam.
>
> The magnification on the sensor of your webcam will be (the focal length
of
> the lens on the webcam)/(the focal length of the objective). You can work
> out the focal length of the objective by learning about microscope
> objectives here:
>
> http://micro.magnet.fsu.edu/primer/
>
> Johannes
>

Right, an objective lens and an area sensor (webcam without a lens) are all
he needs to produce an image on his monitor. If in addition he would like to
use the microscope visually, he needs an eyepiece and his webcam needs its
own objective lens to look through the eyepiece and produce the image on his
monitor. Also, he may need to illuminate the field of view with a lamp and
additional optics.


.



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