FLUORIDE GLASSES CONTAINING LOW QUANTITIES OF PHOSPHATE
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OPTICAL GLASS
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Low density alkali free optical glass - based on borosilicate contg. lime, titania, and lead oxide having high refractive index and low dispersion
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OPTICAL GLASS
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OPTICAL BORATE GLASS
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OPTICAL GLASS
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Machine-workable micaceous ceramics prodn. - contg. silica, alumina, magnesia, fluoride and calcium, sodium and potassium oxide(s)
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Photochromic borate glass free from silver - contains halide(s) and at least one of copper cadmium, thallium, tin and lead
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Astable thyristor trigger circuit - has capacitor in parallel with load resistor and resistor in series with RC capacitor to generate extinguishing voltage
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OPTICAL LEAD SILICATE GLASSES
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Optical glass having high index of refraction - for use in composite achromatic spectacles
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EYE PROTECTION GLASS WITH ULTRAVIOLET AND ULTRA RED ABSORPTION
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OPTICAL BOROSILICATE GLASS
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OPTICAL TELLURITE GLASS WITH HIGH REFRACTURES, EXTREME DISPERSIONS AND HIGH IR TRANSMISSION
