Where can I buy a half silvered mirror?


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Topic: Science > Physics
User: ""
Date: 23 Aug 2005 08:23:07 AM
Object: Where can I buy a half silvered mirror?
I'm looking to split a laser up into 10 beams using splitting
techniques - ideally I would need 1/2, 1/4, 1/3... silvered mirrors to
do this approx. equally.
At the moment I'll settle for just 1/2 silvered mirrors, does anyone
know where I can buy them?
Thanks,
Dave
.

User: "James Copeland"

Title: Re: Where can I buy a half silvered mirror? 23 Aug 2005 10:29:25 AM
<kasterborus@yahoo.com> wrote in message
news:1124803387.511956.219070@z14g2000cwz.googlegroups.com...

I'm looking to split a laser up into 10 beams using splitting
techniques - ideally I would need 1/2, 1/4, 1/3... silvered mirrors to
do this approx. equally.

At the moment I'll settle for just 1/2 silvered mirrors, does anyone
know where I can buy them?

Thanks,

Dave

Edmund Scientific used to carry a large line of mirrors, lenses and optical
items of all kinds. I don't know about now. Sorry, but I can't give you an
address or other info, because since my retirement in 1996 I've not received
any more or their catalogs. I'm sure you can find them using Google.
Jim C.
.

User: "Uncle Al"

Title: Re: Where can I buy a half silvered mirror? 23 Aug 2005 04:08:54 PM
wrote:


I'm looking to split a laser up into 10 beams using splitting
techniques - ideally I would need 1/2, 1/4, 1/3... silvered mirrors to
do this approx. equally.

At the moment I'll settle for just 1/2 silvered mirrors, does anyone
know where I can buy them?

Why not a spaced stack of microscope coverslips? That will cheaply
get you some 7-10% reflectance for each two-surface transmission (air
has n = 1.0003),
R = [(n_1 - n_0)/(n_1 + n_0)]^2
Coverslips come in four thicknesses (good to +/- 10% through the box)
:
#0 about 0.10 mm thick
#1 about 0.14 mm thick
#1-1/2 about 0.17 mm thick
#2 about 0.20 mm thick
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
User: "TokaMundo"

Title: Re: Where can I buy a half silvered mirror? 23 Aug 2005 06:09:45 PM
On Tue, 23 Aug 2005 14:08:54 -0700, Uncle Al <UncleAl0@hate.spam.net>
Gave us:

kasterborus@yahoo.com wrote:


I'm looking to split a laser up into 10 beams using splitting
techniques - ideally I would need 1/2, 1/4, 1/3... silvered mirrors to
do this approx. equally.

At the moment I'll settle for just 1/2 silvered mirrors, does anyone
know where I can buy them?


Why not a spaced stack of microscope coverslips? That will cheaply
get you some 7-10% reflectance for each two-surface transmission (air
has n = 1.0003),

R = [(n_1 - n_0)/(n_1 + n_0)]^2

Coverslips come in four thicknesses (good to +/- 10% through the box)
:

#0 about 0.10 mm thick
#1 about 0.14 mm thick
#1-1/2 about 0.17 mm thick
#2 about 0.20 mm thick

Interesting answer.
Proof that Al is not a computer, I'd say.
.
User: "Uncle Al"

Title: Re: Where can I buy a half silvered mirror? 23 Aug 2005 07:19:44 PM
TokaMundo wrote:


On Tue, 23 Aug 2005 14:08:54 -0700, Uncle Al <UncleAl0@hate.spam.net>
Gave us:

kasterborus@yahoo.com wrote:


I'm looking to split a laser up into 10 beams using splitting
techniques - ideally I would need 1/2, 1/4, 1/3... silvered mirrors to
do this approx. equally.

At the moment I'll settle for just 1/2 silvered mirrors, does anyone
know where I can buy them?


Why not a spaced stack of microscope coverslips? That will cheaply
get you some 7-10% reflectance for each two-surface transmission (air
has n = 1.0003),

R = [(n_1 - n_0)/(n_1 + n_0)]^2

Coverslips come in four thicknesses (good to +/- 10% through the box)
:

#0 about 0.10 mm thick
#1 about 0.14 mm thick
#1-1/2 about 0.17 mm thick
#2 about 0.20 mm thick


Interesting answer.

Proof that Al is not a computer, I'd say.

Passes the TuringTuringTuringTuring test, does he? It's a brilliant,
creative, workable answer reducing an expensive problem to a cheap
jury-rigged solution.
Pinhole filter, beam expander, radially facetted polygon mirror; then
standard first surface mirrors for steering would also do the trick.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.




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