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Re: [ATM] Borofloat 33

Borofloat 33 is a nice stuff for making mirrors (thermal properties like 
Pyrex, free of internal stress) and looks very clear, but as of Schott 
information
http://www.us.schott.com/hometech/english/products/borofloat/attribute/optical/index.html
the transmittance is approx. 92% only. Optical glass has much higher 
transmittance


Stathis Kafalis
www.stathis-firstlight.de


----- Original Message ----- 
From: "Richard F.L.R. Snashall" <rflrs@rcn.com>
To: "ATM List" <atm@atmlist.net>
Sent: Friday, March 24, 2006 9:18 PM
Subject: [ATM] Borofloat 33


> Just glancing at the Schott website Schott Duryea Glass
> <http://www.us.schott.com/optics_devices/english/products/flash/abbediagramm_flash.html>
> and noticed a
> page set I had not seen before: Borofloat 33.  The ecode is 473654; it
> has about half the expansion rate of N-BK7.  Comes up to 1 inch thick.
>
> Wonder if it has high enough quality to be used as L-H correctors and
> be cost effective.
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> ATM mailing list http://www.atmlist.net/ 

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