1. The Meade ACF telescope uses an OG530 Orange Schott Optical Glass Filter. 2. Optical glass for spectacles has been used since the late Middle Ages.3. Abbe was instrumental in the development of the famous Jena optical glass . 4. Fluoride glass may also mean an oxide optical glass doped with zirconium tetrafluoride. 5. Other experiments involve making high-quality optical glass and semi-conducting materials, the dispatch said. 6. The first spectacles utilized quartz lenses since optical glass had not been developed. 7. :: : Also, low-end models also use lower quality optical glasses for their lenses. 8. The company started to produced optical glass during the early 1940s for military use. 9. Phosphate glass constitutes a class of optical glasses composed of metaphosphates of various metals. 10. German optics was overwhelmingly superior, as exemplified by Carl Zeiss lenses and optical glass .
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