Archived posting to the Leica Users Group, 1998/12/11

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Subject: RE: [Leica] Bubbles, coating and all that
From: "Kotsinadelis, Peter (Peter)" <peterk@lucent.com>
Date: Fri, 11 Dec 1998 13:26:24 -0800

Assuming from your message that Schott is the actual manufacturer of Leica
spec'd glass, is there a specification that Leica includes when having glass
made by Schott, or whomever, that specifies the acceptable size of the
bubbles?

Peter K

- -----Original Message-----
Erwin Puts wrote:

The Schott catalogue identifies four classes of the incidence of bubbles,
from zero to three. The zero class has an extremely low amount of bubbles
per volume unit and class three has a higher amount....
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