Natural Science Forum / Physics / Optics / November 2004

I have an application which requires the use of a
basic monochrome CCTV camera utilising a standard CCD
with either a C or CS mount for lenses. The lens
arrangement must present a fixed field of view of

Where can I get a data file for the Photopic curve.  Say 1 data point per nm.
Any links would be appreciated.  Or you can email a file.

Before I posted these questions I did some searching on several
occasions for an answer but have not found one yet. I hope someone
will answer this or show me where I can find the answer.
Regarding Galilean type beam expanders. Expanding the beam before

I' am looking for a Canadian source for a good green laser. Does
anyone know where I might get one?

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5730770721&fromMakeTrack=true
From vital spirit, $60 USD is the best price I have seen, what you guys think?

Someone emailed and requested me to post it on Usenet newsgroups.
Sadistic FBI agents should be tortured the way how FBI sadists and
perverts tortured this poor guy (non-muslim) for three years and
continue to torture him even after he left america tracking him with

Hi group !
Sorry for using this forum for advertising my used junk, but i thought it
could be of interest to someone :-)
I have four (4) General scanning G120PD galvos in good condition, they can

I need to write a comparative review of the major optical design software
offerings. I plan to include both sequential and illumination-type ray
tracers. Is there a single recent document or website that gives a tabular
list of facilities, prices and annual maintenance fees, or ...

http://search.ebay.com/_W0QQgotopageZ1QQsassZtritiumsystemsQQsorecordsperp
ageZ50QQsosortorderZ1QQsosortpropertyZ1

I want to build a laser machine for cutting sheet acrylic/perspex (5mm
thick).  I have been looking at this 20 Watt CO2 Laser Tube, from
Information Unlimited:
http://www.amazing1.com/burning-lasers.htm

Does anyone know what the specifications of this laser are?  I'm curious as
to the output power in cw, q-switched, etc...
Thanks,
Bob

I am considering the purchase of a Quantronix arc lamp pumped yag laser and
have a few questions.  The laser head is identical to the one in the link
and it sits on a power supply that is half the size of my refrigerator.
http://www.repairfaq.org/sam/laserpic/qtr1-1.jpg

I have an ALC68 argon with multimode mirrors. Does anyone know if it's
possible to run it with single mode mirrors and if so what sort of
coherence length I could expect?
/Neil

Not many know this, but laser beams can capture vision, all that's needed is
good software that assembles an image refection on the laser.  Super powers
all use these  for espionage, this is why you never hear about it. The super
powers also use laser beams to read minds. If you ...

This is an rudimentary question but I am used to working in fiber and
not sure of the free space equivalent.  In fiber, reflections from
surfaces, usually fiber end faces, can make their way back to the laser.
 This destabilizes the gain media and causes output power ...