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webcam eyepiece mod

I started with a HyperVCam Mobile from Aiptek that I picked up for £30. Any web camera should be fine although the more expensive ones are likely to have higher quality sensors that will work better in low light. In the past I've founf black and white cameras to produce better quality images. It should also be possible to do the same thing with a video camera circuit such as those from Maplin (around £40 for grey and £80 for colour) if you want to get TV video output rather than PC connectivity.
hypervcam.gif - 6739 Bytes

Webcam internals - 13458 Bytes

Inside the casing is a little circuit with a lens unit that unscrews to reveal the CMOS chip. This camera contains the near-IR filter within the lens assembly so it cannot be used separately in the eyepiece version.

Connector - 2488 Bytes Connector bits - 2831 Bytes

The two inter-locking base elements (green bits here) from some twist connectors made suitable spacers for the circuit board to fit into a Maplin project case. 
Project box - 13458 Bytes

One half was glued to the case, the other half to the circuit board so that the board would slot comfortably in place but still be easily removed if necessary.

Camera in box - 11403 Bytes

Here is the camera re-housed in a case that makes it easier to get access to the internals and play around with lens adaptors. As you can see from the picture the lens mounting around the CMOS sensor was not removed. This enables the original lens to be screwed in to turn the device back temporarily into a webcam, although there's no reason why it can't be removed to get the sensor closer to front of the housing.
Eye-piece adaptor on box - 7131 Bytes

Finally, a hole was drilled in the cover and glued on an adaptor that allows the unit to be attached the to the micoscope. The tube was the hardest piece to find - I ended up buying a second hand eye-piece without the optics for a fiver.
Finished box - 7017 Bytes

The final item. To be used on a microscope lack of near IR filter has to be addressed .
  dylski @ 2ne1 . com - Last Updated: 10th November, 2008