Optical glasses will be found in scientific instruments, microscopes, fighter aircraft and most commonly in spectacles.
The most important properties are the refractive index and the dispersion:
- Refractive index is a measure of how much the glass bends light.
- Dispersion is a measure of the way the glass splits white light into the colours of the rainbow.
Glass makers use the variations in these characteristics to develop optical glasses.
In this Section
Recycled glass can be exported to be used in glass manufacture abroad. The CO2 savings are 290 Kg CO2/tonne.