Optical glass for polarizing optical system, production...

Details Optical glass for polarizing optical system, production... Optical glass for polarizing optical system, production...

2006-06-06

2006-06-06

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Polarization without modulation

Glare prevention by discriminating against polarized light

C359S487030, C359S583000, C359S639000, C359S485050

Reexamination Certificate

active

07057815

ABSTRACT:
An optical glass for polarizing optical system having a photoelastic constant C in the range of −0.2 to +0.5 [10−8cm2/N] with respect to a wavelength of 633 nm, the optical glass having the following composition (1):composition (1): when represented in terms of wt. % of oxides:in-line-formulae description="In-line Formulae" end="lead"?SiO2: 17.0–27.0% (35.5–57.0 mol %)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Li2O+Na2O+K2O: 0.5–5.0% (0.7–20.0 mol %)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?PbO: 72.0–75.0% (39.1–45.0 mol %)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?As2O3+Sb2O3: 0.1–3.0% (0.1–2.0 mol %).in-line-formulae description="In-line Formulae" end="tail"?

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