Optomechanics – Zoom Lenses

Colleagues:

Zoom lenses are getting hot again.  They seem to come in cycles for AEH.

There was the 20:1 MWIR zoom with a 300 mm entrance pupil.  It was a lot of fun!  Good for a mechanical engineer to cut his teeth on too.  As tough as it was, it actually inspired much of AEH’s optomechanical engineering practice.

The 8:1 visible microscope zoom for medical diagnostics was an application that brought its own challenges.  Using commercial optical assemblies where only the focal lengths were known required some lab work to find their principal points.  Those of you who’ve taken my short course in optomechanical analysis or used my Ivory Optomechanical Modeling Tools will appreciate that need.

Then there was the 10:1 NIR zoom with 36 individual images, five moving lens groups and two working distances.  And it had to be packaged into a convenient instrument case.  AEH used a customized version of the Ivory Optomechanical Modeling Tools to make that one happen too.  One of the advantages of having the source code is that I can make it do whatever is needed at the time.  And the current version’s users receive the upgrades as I develop them.

It’s a New Year with new opportunities and new challenges.  As I said last time,

Here we go-o-o-o-o-o…….

Al H.
1-9-18

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