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Old 04-01-2019, 09:31 AM
Brian Wong Shui Brian Wong Shui is offline
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Nikon (Hikari) Glass used for lenses.

Maybe a bit OT but this article was interesting. Especially that IoR can be controlled through annealing.

https://www.imaging-resource.com/new...-glass-factory
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Old 04-01-2019, 12:45 PM
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Sky Campbell Sky Campbell is offline
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Quote:
Originally Posted by Brian Wong Shui View Post
Maybe a bit OT but this article was interesting. Especially that IoR can be controlled through annealing.

https://www.imaging-resource.com/new...-glass-factory
Wow that was really a great article. Thanks for sharing, I found it fascinating.
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Old 04-01-2019, 04:44 PM
Eric Trulson Eric Trulson is offline
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Thank you for sharing, that was a pleasantly detailed overview of some technically impressive glass melting. Wild how they need to account for the extra silica dissolved into the melt from the pot wall, and the additional loss of volatiles near the center of the pot.

I would sign a "take-my-firstborn-and-my-right-hand-if-I-ever-tell-anyone-anything" level of nondisclosure agreement for a chance to actually check out their final melting furnace though (the one that remelts the frit from the primary melter and casts the continuous bar of optical quality glass). Super curious what technical hoops they need to jump through to maintain glass quality during that stage of the process.
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