Author Options:

Extend optical mouse range Answered

Hi all,

I'm wanting to make a jig for a production project requiring a sensitive optical measure of movement with a focal length of 5-10 mm. I thought an optical mouse might be a good start but the lenses in a few I've tried require the device to be too close. It needs to be no bigger than the electronics of a mouse. If anyone has a lens that could be perfect or other ideas I'd love to hear them.


3 Replies

steveastrouk (author)2012-09-23

The problem you'll have is the very small size of the lenses you'll need. If you can find some tiny concave lenses, they'll extend your focus range

Select as Best AnswerUndo Best Answer

canucksgirl (author)steveastrouk2012-09-23

Would a disposable contact lens work?

Select as Best AnswerUndo Best Answer

steveastrouk (author)canucksgirl2012-09-23

Dunno. From my last [ahem] Contact with them, they are a bit too big. I'm thinking around 3mm (1/8") diameter.

Select as Best AnswerUndo Best Answer