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  2. Optical glass - Wikipedia

    en.wikipedia.org/wiki/Optical_glass

    Some optical glasses use up to twenty different chemical components to obtain the desired optical properties. In addition to optical and mechanical parameters, optical glasses are characterized by their purity and quality, which are essential for their use in precision instruments.

  3. Category:Prisms (optics) - Wikipedia

    en.wikipedia.org/wiki/Category:Prisms_(optics)

    Pages in category "Prisms (optics)" The following 41 pages are in this category, out of 41 total. This list may not reflect recent changes. ...