A very pure kind of glass used for lenses.
More example sentences
- Optical fibers are made of extremely pure optical glass.
- Schott, a Carl Zeiss subsidiary, produces optical glass that is widely regarded as the finest in the world.
- A powerful internal light will illuminate the perforated 12-metre section near the stop, which will taper off to a tip of optical glass.
Definition of optical glass in:
- The British & World English dictionary