Re: Need Objectives For B&L Stereozoom 7
- From: Richard J Kinch <kinch@xxxxxxxxxxx>
- Date: Sat, 14 Feb 2009 14:05:43 -0600
Joe writes:
These objectives are just a single piece of glass each - not compound
lenses.
B&L Stereozooms have separate objectives for each eye. I think you mean
the additional multiplier lens that screws on below the objectives to
boost the magnification. These are just ordinary achromatic lenses of a
weak power (one Nissho item in hand reads 1.5X and is just a 600mm focal
length lens) like you could get from premium suppliers like
edmundoptics.com or mellesgriot.com, or cheaply from surplusshed.com or
anchoroptics.com.
If you can disassemble the old cell you might find a new lens that fits,
if you're not equipped to otherwise improvise a cell mount. I don't
have a B&L cell in hand, just pods, but from the female thread on the
many pods I have, it looks to be an either M38x0.75 or 1.5-32 thread.
You do understand the scope works without this lens, right?
(If you send me your ruined one, I can remount a new lens in it in
exchange for the chance to reverse-engineer your specimen.)
This frosting problem may have been due to this instrument being widely
used in the semiconductor processing industry. Maybe somebody was using
the scope to watch a wafer etch progress while washing in hydrofluoric
acid. Kinda makes you wonder about the watcher's lungs.
.
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