BORESCOPE

Hyper-Eye™ User Notes: Borescope

Hyper-Eye™ hypercentric lenses may also be used as long stand-off borescopes for inspecting the insides of drilled or tapped holes, container interiors, or just a "peephole” view through a small space. While such a function isn't a new idea, Hyper-Eye™ lets you acquire such a view while giving you lots of space to introduce lighting. As machine vision users know, lighting flexibility can often make or break an application.



So, how do you do it? Just add a lens spacer (0.5mm to 1.5mm should suffice) between the lens and your c-mount camera. Place the object to be viewed farther than the convergence point distance (CPD) for the lens, and re-focus. The exact distance depends on the bore diameter and depth, but it's pretty easy to find the best view.

The next page shows an example of a Hyper-Eye lens being used to inspect the interior of a narrow mouthed container, in this case an automotive oil filter. Notice the Convergence Point (CP) is right at the opening, thus leaving lots of room for lighting.

*Adding spacers to increase focus distance is non-intuitive, but that's how it works for Hyper-Eye!