Natural Science Forum / Physics / Optics / February 2007

I currently have a YAG laser that I use to mark one specific item. I
do it one by one but would need to upgrade to a faster either manual
or automatic system. I think I will be ok if I could just find a
manual way to make the items a bit faster. So I could load/feed a jig

Did some more with the Laserscope model 501 here.  All the 1/4" cooling
lines were brittle and split open when I first powered it up.  I cleaned
up that mess and replaced all the tubing.  Now there are no leaks, but
the system gives an L012 error which means that there is no flow ...

I am a hobbiest with very limited experience in optics and would like
to ask expert advise for the following experiment;
Assume that
   (-) We have a laser pointer at point A and it is pointed to a flat

Does anyone have the dimensions of a Zeiss Ph1 phase plate, please?
Outer diameter + inner diameter would be much appreciated.
Incidentally, there is a scaleable template buried in the artwork in
MSWord, which can be printed on to an acetate - or at least, that is

I'm developing a LCD calibration tool, based on the same basic
principle as Adobe Gamma, which is to compare with the eye the
intensity of a grey square with respect to the black and white striped
background. With a few variations, it is done channel by channel, and

Hey guys,
I would like to know whether or not the LC connector is fragile or less
reliable than its SC and ST counterparts. I've heard from a few
technicians that it breaks relatively quickly, is this true? Could you

I have a project that will be transmitting 10,000 analog signals of
bandwidth 1.5 GHz a distance of 3 km.
I had thought about using individual laser diodes in TOSA packages to
do this.

I am just curious, is it possible to power a lexel 95 from 240V at lower
current, with only a single phase supply?
The laser will be used for experimentation, and its full power is not
needed, but the little air cooled argon and DPSS lasers I have done have

I know this is a huge subject, but is there a good tutorial (in the
journals or on the web) which gives an indication of the amount of
scatter one could expect from a machined reflecting/refracting surface
of a given surface finish? It assumes, of course, that you know the

I need some help designing a simple lens.
The lens will be injection molded in Acrylic, and will be used in Toy.
Picture below details Diameter and thickness. I need to know what the radii
of of the lens faces should be to achieve a magnification of 2.5?

First, sorry for my very bad english!
My Question is about the 405nm/415nm laserdiodes.
For the Industry it´s a new generation, so I have buy one blue ray DVD
burner for test it.

I just bought a used Unitron TMS-2309 Tool Makers microscope on
eBay.  It seems to have a problem.  The microscope has a photo tube
and the regular angled eyepiece tube.  I can get light into the photo
tube section but I can't seem to get any light into the visual

http://graffitiresearchlab.com/?page_id=76#video
REBELS!!!

hello all;
I wrote this question before. Sorry about writing again.
I wanna make a null ellipsometer
What kind of polarizer and wave plate I need to use.I will try a

I would have expected the mirrors to be parallel, as determined by the
machining of the frame.
But on checking several SSY1s, this would appear not to be the case.
I know the mirrors have wedge and this is very evident, but appears