Natural Science Forum / Physics / Optics / October 2004

Hi Brian,
Are you not at earthlink.net any more? Both emails I sent you just now
bounced and I can't access your web pages either
( http://home.earthlink.net/~skywise711/index.html etc.)

The Uhiphase Web site doesn't make this clear or I missed it:
http://www.jdsu.com/site/images/products/pdf/2110ps.pdf
Also, what does -SLBK mean?  I know SLB should be 488 single line blue
but what is the K?

Do environmental (low vacuum) SEMs offer resolution that is
competitive with conventional SEMs? They seem ideal for imaging
insulating samples which cannot be coated with conducting material.
Fred

Hi, I'm trying to decide if an inverted fluorescent scope is the only
scope one needs for the vast majority of cell biology fluorescent
microscopy applications. How often will one miss not also having a
regular vertical fluorescent scope?  Any thoughts from experienced

How do you go about designing a lens with a large front element and a small
sensor while maintaining the FOV?
Is it all about lowering the focal length?
For instance having a 10cm(~4") front element and a 6mm(1/4") sensor with

I have a AAS in laser/electro-optics from TSTI waco.  Does anyone know
how I can get my BS in optics while stuck in the center of
Mississippi?  Please help.
UA and NTU only have masters programs.

www.westcoastengineering.com
Full program plus user support. No dongles, no software keys, no time
outs.
ODP is everything you wanted and more for just $49.00.

Looking for a optical mentor...
Trying forensic imagery as a new hobby, but need help, and people to
talk with.
Trying to figure out the concepts of point spread function, FFT

i was wondering about the color of my old CDROM laser diode. The wavelength
is around 800 nm - 900 nm. To "see" the laser foot print I used my web cam
without IR cut filter.
Close to yellow looking point (it is from CDROM) is a red looking point from

I recently found a Leitz Photar 25mm objective. This objective is
designed for macrophotography and has a RMS thread.
Upon close examination of the objective, I noticed some dust
particles and a small hair in the viewing field. Thinking that the

A while ago, a US company developed, an extremely efficient light
source, for use in high power spotlights, and the like. It comprised
of a quartz glass sphere, containing sulphur, and presumably a low
pressure noble gas, probably argon. The sphere was coupled, via a

Heya everyone, Just to let you know, I bid on and paid for a white
light laserphysics tube from kclements01 on ebay. he recieved my
payment of $60 and will not return my emails, or answer his phone it
has been over a month (i have been out of town on service calls) no

For the mirrors.
Typical examples: Melles Griot 05-LHR-15X, 16X, 17X, 19X, etc.  Random
polarized preferred because there is no Brewster plate to complicate matters.
Mirrors from SP-084 acceptable but NOT SP-098 or Siemens 7641.

I'd like to get a trinocular microscope, high power or non-high power,
so I can take pictures. I'm just getting started, so power doesn't
matter to me yet.
I used to buy cheap lenses for regular photography to save money, and

Dear Optical System Experts / Suppliers,
  I wish to know Sources of suppliers who can offer me Lens Systems
with following specifications:-
  Catadioptric System ; Effective Focal Length = 600mm;