Originally Posted by ImanCarrot Ajmoir,
It all depends on what level of accuracy you need, if you're looking for sub micron accuracy then you will probably have to use an interferometer (a phase shifting one will get great accuracy), there's a couple of sites I use which may help: http://spie.org/ http://www.groupsrv.com/science/forum-22.html
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The second link is very helpful, the problem is I don't even know what level of accuracy I need
The sensor I have has 5,000 cells in 35mm, 7microns wide, I've already hooked it up to processor and read it's contents, using a mask over roughly half the cells. Seems to work.
Ideally, I'd like to measure in a range of scales e.g. 0-3ft, 3ft-12ft, 12ft-36ft.
I'll pick up a few of the basic books listed in the forum and go from there. I'm pretty sure to get to started with I don't need anything to fancy, but if I want the full accuracy of the sensor at 40ft then I'll need to become more serious.
If nothing else my hobbies seem to improve the quality of the books in my bookcases