Do it yourself - device for digitizing filmstrips

The need to create such a device appeared at the department in our university. Dozens of completely unused educational filmstrips were found in the bins - for electronics, sensors, installation technology, etc. Throwing their hand did not rise, and using a slide projector is archaic, and due to the obsolescence of filmstrips, not all shots are needed. Quite a reasonable way out is to digitize the filmstrips, and the teachers themselves will already be jerking somewhere whole slides, and somewhere else illustrations.


At one time, I digitized a number of such filmstrips using a scanner with a slide adapter (Epson perfection 1260). There were enough permissions of the scanner (small text was recognized). But the main drawback - digitization required an incredibly long time - almost 1 minute per frame. Later I tried to fix the picture with a camera - it came out very well.

Actually for this task of digitization it was necessary to make a device. The task of the device is to uniformly illuminate the background of the slide, so that it can then be photographed in transmitted light.

The fixture is quite simple. In the candy box there is a cluster of 18 white LEDs, the light is directed towards the lid. On the lid a piece of plexiglass is clamped with a matte film (the back of the packaging from under the rulers). Since the digitization volume is high, the cover of the film will scratch, which will eventually come out in the photographs, so 2 layers of glass are stuck on the cover, between which the filmstrip film will be pulled.
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As you can see in the photos, the slides of the filmstrip on the photo are quite readable.


All the filmstrips digitized at the department promise to put in wide access as soon as possible.

This is the only crosspost in RuNet. No longer was and is not planned. Full copying of the article is caused by the fact that the site server does not hold up for everyone. Source - licrym.org