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Science Groups Forum Index » Techniques - Microscopy » Olympus MD Plan Objective Question
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| C@utc |
 Posted: Wed Nov 15, 2006 11:54 pm |
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I'm looking for information about Olympus MD Plan Objectives. Does anyone
have a Olympus Broschure with a description that they can post? I don't know
exactly what kind of objectives the MDplan are. The objectives that I
purchased are marked:
Olympus MDPlan
infinity symbol/-
f=180
Will I need a special attachment to change the focal length from 160 to 180? |
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| Josh |
| Posted: Thu Nov 16, 2006 8:18 am |
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I think M stands for Medium and D stands for distance. I think an MD
objective is a medium distance objective.
I'm not sure about the infinity symbol.
"C@utc" <C@.com> wrote in message
news:HpJ6h.2759$zq.1965@bignews5.bellsouth.net...
Quote: I'm looking for information about Olympus MD Plan Objectives. Does anyone
have a Olympus Broschure with a description that they can post? I don't
know exactly what kind of objectives the MDplan are. The objectives that I
purchased are marked:
Olympus MDPlan
infinity symbol/-
f=180
Will I need a special attachment to change the focal length from 160 to
180?
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| Alan Wood |
| Posted: Thu Nov 16, 2006 2:13 pm |
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C@utc wrote:
Quote: I'm looking for information about Olympus MD Plan Objectives. Does anyone
have a Olympus Broschure with a description that they can post? I don't know
exactly what kind of objectives the MDplan are. The objectives that I
purchased are marked:
Olympus MDPlan
infinity symbol/-
f=180
Will I need a special attachment to change the focal length from 160 to 180?
I have an Olympus BX metallurgical catalogue that lists MPlan and
MPlanApo objectives, so I suspect that yours are something similar.
Metallurgical objectives are designed for use with a lighting system
that shines light down through the objective to illuminate an opaque
subject, without a coverslip. They are not designed for use with
transparent subjects and transmitted light.
The infinity symbol shows that these lenses are not intended to be used
on microscopes with a 160mm tube length. They need an additional lens
within the tube to produce a viewable image. You can't use an
attachment - you need a compatible microscope.
--
Alan Wood
http://www.alanwood.net (Unicode, special characters, pesticide names) |
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