Glass Fresnel lenses?

Heating, insulation, ventilation, VMC, cooling ... short thermal comfort. Insulation, wood energy, heat pumps but also electricity, gas or oil, VMC ... Help in choosing and implementation, problem solving, optimization, tips and tricks ...
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paralytic
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Registration: 24/06/12, 11:04

Glass Fresnel lenses?




by paralytic » 28/06/12, 17:53

Hello, I'm looking for glass Fresnel lenses.
Do you know of a distributor?
Kind regards.
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Gaston
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by Gaston » 28/06/12, 18:34

No, I don't know any, but why do you really need glass?

For a question of wavelength?
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paralytic
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by paralytic » 28/06/12, 21:34

For wavelength and duration from tps.
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paralytic
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by paralytic » 28/06/12, 21:36

And another question can someone tell me up to what temperature they can go to the focal point.
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