Material composition and optical elements using the same
AssigneeOlympus Corporation
InventorKunihisa Obi
Life of this patent
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Abstract
Provided are an optical material composition and an optical element that not only exhibit desirable anomalous dispersion properties but are also easy to process. The material composition for use in the optical element contains 5 weight % to 50 weight % of niobium (V) oxide fine particles (A), 49 weight % to 94 weight % of an organic compound (B) having one or more polymerizable functional groups in one molecule thereof, and 0.05 weight % to 5 weight % of a polymerization initiator (C).
Claims7
A material composition comprising:
- 5 weight % to 50 weight % of niobium (V) oxide fine particles (A);
- 49 weight % to 94 weight % of an organic compound (B) comprising at least one of allyl carbazole and N-(β-methacryloyloxyethyl)carbazole having one or more polymerizable functional groups in one molecule thereof;
- and
- 0.05 weight % to 5 weight % of a polymerization initiator (C), wherein the material composition is cured to form a cured product that satisfies the following relationships:
- 10≦νd≦40
- and
- 0.02≦ΔθgF≦0.12
- where νd is the Abbe number of the cured product and ΔθgF is the anomalous dispersion of the cured product as determined for the F and g spectral lines.
An optical element comprising a cured product of a material composition that contains 5 weight % to 50 weight % of niobium (V) oxide fine particles (A), 49 weight % to 94 weight % of an organic compound (B) comprising at least one of allyl carbazole and N-(β-methacryloyloxyethyl)carbazole having one or more polymerizable functional groups in one molecule thereof, and 0.05 weight % to 5 weight % of a polymerization initiator (C), wherein the cured product satisfies the following relationships:
- 10≦νd≦40
- and
- 0.02≦ΔθgF≦0.12
- where νd is the Abbe number of the cured product and ΔθgF is the anomalous dispersion of the cured product as determined for the f and g spectral lines.
Dependencies are inferred from the claim text.