3M Nextel Black Velvet paint replacement
Alan Guisewite
Hi,
I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
Velvet Coating - the spray paint that's used inside optical systems to cut
down on stray light reflection.
Thanks!
Alan
--
Carnegie Mellon University Alan D. Guisewite
Robotics Institute Senior Research Technician
http://www.cs.cmu.edu/~adg a...@cmu.edu
To ice! To snow! To Sodeskaya we go!
Alan Shinn
>
> Hi,
>
> I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
> Velvet Coating - the spray paint that's used inside optical systems to cut
> down on stray light reflection.
>
> Thanks!
>
When you find out, please share the wealth.
Is there a FAQ on optical black paints and other materials?
--
Looking forward:
Alan Shinn
Experience the
beginnings of microscopy.
Make or buy your own replica
of one of Antony van Leeuwenhoek's microscopes.
visit http://www.sirius.com/~alshinn/
Gregory J. Whaley
>
> Alan Guisewite wrote:
> >
> > Hi,
> >
> > I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
> > Velvet Coating - the spray paint that's used inside optical systems to cut
> > down on stray light reflection.
> >
> > Thanks!
> >
>
> When you find out, please share the wealth.
> Is there a FAQ on optical black paints and other materials?
> --
> Looking forward:
> Alan Shinn
>
I have informally kept a sci.optics "Black FAQ". You may find it at
ftp://ftp.visi.com/users/svta/CurrentblackFAQ.txt
If you find any new information, please post it here and I will add it
to the FAQ.
- Greg
------------------------------------------------------
Dr. Gregory J. Whaley mailto:gwh...@svta.com
SVT Associates, Inc. voice: 612.934.2100 x249
7620 Executive Drive fax: 612.934.2737
Eden Prairie, MN 55344 http://www.svta.com
r...@netgate.net
> I'm looking for a replacement for (or equivalent to) 3M's Nextel
This has come up several times on the Amateur Telescope Makers' mailing
list. A search of the archives at:
http://www.system.missouri.edu/atm/
for "nextel" should turn up some suggestions. I have a vague (and
possibly incorrect) recollection of someone mentioning a company in
Europe that either bought the rights, or makes an equivalent.
Ran
Jack T. Sanders
Guisewite) wrote:
>
>Hi,
>
> I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
>Velvet Coating - the spray paint that's used inside optical systems to cut
>down on stray light reflection.
>
I have seen all of these used on space flight telescope baffles:
1. Aeroglaze Z-306 polyurethane paint (Lord Corp.)
2. Black etched beryllium
3. Martin Black, a proprietary black anodized aluminum coating
(Lockheed Martin)
4. Anodized aluminum, no dye
5. Anodized aluminum, black dye (and sealed)
I'm certain that there are more; these are the ones that I'm familiar
with. Since your application is unknown, I can't provide any more
specific information.
Bram Vingerling
Nextel Black Velvet is still available!
It is produced by this German company:
Company : Mackiewicz GmbH in Hamburg, Germany
Telefon : +49-40-751030; Fax:+49-40-75103375
Lack : 81121,Nextel Velvet, Schwarz (black),1kg 5kg 25kg
Thinner : 8061, Nextel Thinner
Best Regards,
Bram Vingerling
--
----------------------------------------------------------
IBV-Ing.Büro Vingerling Optical Thin Films
Production consultant for precision optics and ophthalmics
Schulgasse 2, D-35415 Pohlheim, Germany
Tel.:+49(0)641-48713 Fax:-47762 b.ving...@t-online.de
http://ourworld.compuserve.com/homepages/ibv_engineering/
----------------------------------------------------------
Alan Guisewite schrieb:
>
> Hi,
>
> I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
> Velvet Coating - the spray paint that's used inside optical systems to cut
> down on stray light reflection.
>
Jos Groote Schaarsberg
>
> I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
> Velvet Coating - the spray paint that's used inside optical systems to cut
> down on stray light reflection.
>
If possible, I'm using black PE sheet or black Delrin.
Both are cheap, available in large quantities, and are black in the
visible as well as in the near infrared wavelength range.
--
Jos Groote Schaarsberg
Willem-Jan Markerink
Those are notorious for leaking near-IR, as many darkroom-hobbiests have
experienced, using this as a cheap black-out material....8-))
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
<w.j.ma...@a1.nl>
[note: 'a-one' & 'en-el'!]
Bram Vingerling
"very very" black and matte surface.
PE Sheet or Delrin are black but very glossy.
The former "3M Black Velvet" is absolutely unbeatable
in this points.
Jos Groote Schaarsberg schrieb:
>
> Alan Guisewite wrote:
> >
> > I'm looking for a replacement for (or equivalent to) 3M's Nextel Black
> > Velvet Coating - the spray paint that's used inside optical systems to cut
> > down on stray light reflection.
> >
>
> If possible, I'm using black PE sheet or black Delrin.
> Both are cheap, available in large quantities, and are black in the
> visible as well as in the near infrared wavelength range.
>
> --
>
> Jos Groote Schaarsberg
Alan Shinn
>
> For Straylight reduction you need a
> "very very" black and matte surface.
> PE Sheet or Delrin are black but very glossy.
>
> The former "3M Black Velvet" is absolutely unbeatable
> in this points.
Bram:
You say "former". What is the present source/name please.
--
Looking forward:
Alan Shinn
Arfty1166
We make an optical coating called Optoblack, which is about 1.5% lower in
reflectance than the old 3M Nextel black. It is 'black' (ie <3%R) from 0.2 to
16 microns (I can't measure further out than that). Unfortunately, we only sell
it as a coating service- we're not in the paint business, so you would have to
send parts to us and have them coated. Coating is extremely lambertian- no
gloss at all- even at fairly high angles.
I think it's in our website (www.labsphere.com) or you can contact me at work
at art_s...@labsphere.com
Best regards,
Art
< Dr. Art Springsteen
Principal Scientist, etc.
Labsphere,Inc.>
Arfty1166
There was an FAQ on black materials that I downloaded off this newsgroup a
couple of years ago.
FYI, there is a commercial database of black materials and coatings-
reflectance, BRDF, usages, outgassing, etc- (among other things, but the most
complete that I've ever seen) called "Solexis" produced by Dr. Susan McCall and
a company called SORIC in Canada. (No, I have no financial stake in the
company, although I did provide a percentage of the spectral data and Sue is a
friend of mine).
Bram Vingerling
> ...
> Bram:
> You say "former". What is the present source/name please.
Alan, it was in my earlier reply in this thread but I repeat it here:
Nextel is produced by this German company:
Company : Mackiewicz GmbH in Hamburg, Germany
Phone : +49-40-751030; Fax:+49-40-75103375
Lack : 81121,Nextel Velvet, Schwarz (black),1kg/ 5kg/ 25kg
Thinner : 8061, Nextel Thinner
Best Regards,
Bram Vingerling
>
> Bram Vingerling wrote:
> >
> > For Straylight reduction you need a
> > "very very" black and matte surface.
> > PE Sheet or Delrin are black but very glossy.
> >
> > The former "3M Black Velvet" is absolutely unbeatable
> > in this points.
>
> Bram:
> You say "former". What is the present source/name please.
It is produced by this German company:
Company : Mackiewicz GmbH in Hamburg, Germany
Telefon : +49-40-751030; Fax:+49-40-75103375
Lack : 81121,Nextel Velvet, Schwarz (black),1kg 5kg 25kg
Thinner : 8061, Nextel Thinner
Best Regards,
Bram Vingerling
--
> --
> Looking forward:
> Alan Shinn
>
> Experience the
> beginnings of microscopy.
> Make or buy your own replica
> of one of Antony van Leeuwenhoek's microscopes.
> visit http://www.sirius.com/~alshinn/
--
Bram Vingerling
How easy is it to coat tubes inside,
diameter say around 0.5 - 1.5" 12.5-32mm?
I will try to send several parts for testing purposes.
Best Regards,
Bram Vingerling
Arfty1166 schrieb:
>
> Hi,
> We make an optical coating called Optoblack, which is about 1.5% lower in
> reflectance than the old 3M Nextel black. It is 'black' (ie <3%R) from 0.2 to
> 16 microns (I can't measure further out than that). Unfortunately, we only sell
> it as a coating service- we're not in the paint business, so you would have to
> send parts to us and have them coated. Coating is extremely lambertian- no
> gloss at all- even at fairly high angles.
> I think it's in our website (www.labsphere.com) or you can contact me at work
> at art_s...@labsphere.com
> Best regards,
> Art
> < Dr. Art Springsteen
> Principal Scientist, etc.
> Labsphere,Inc.>
--