A display that includes an image producing system and a light filtering layer in the blue range, the light filtering layer having a limited impact on the gamut of the display. The image producing system has a gamut G.sub.0 defined in a color space The light filtering layer includes semi-conductive nanoparticles, and the absorbance through the light filtering layer is greater than 0.25 for each light wavelength ranging from 350 nm to λ.sub.cut, λ.sub.cut being in the range from 420 nm to 450 nm. The gamut G.sub.1 of the image producing system with the filtering layer has an area greater than 90% of the area of gamut G.sub.0 in the color space.

Disclosed are polymerizable compositions for ophthalmic lenses. The compositions employ peroxide-based polymerization initiators with decreased capacity for dye degradation. The compositions enable the inclusion of color-balancing dyes, resulting in lenses with improved clarity and color balance.

Disclosed are polymerizable compositions for ophthalmic lenses. The compositions employ peroxide-based polymerization initiators with decreased capacity for dye degradation. The compositions enable the inclusion of color-balancing dyes, resulting in lenses with improved clarity and color balance.

The polymerizable composition for an optical material of the present invention includes a compound (A) represented by General Formula (a) and including two or more allyloxycarbonyl groups, at least one kind of radical polymerization initiator (B) selected from the group consisting of a peroxyketal-based radical polymerization initiator, a peroxymonocarbonate-based radical polymerization initiator, and a peroxyester-based radical polymerization initiator, and a modifier (C) selected from a polyether modified siloxane compound represented by General Formula (c1) or a polyol compound represented by General Formula (c2). ##STR00001##

The polymerizable composition for an optical material of the present invention includes a compound (A) represented by General Formula (a) and including two or more allyloxycarbonyl groups, at least one kind of radical polymerization initiator (B) selected from the group consisting of a peroxyketal-based radical polymerization initiator, a peroxymonocarbonate-based radical polymerization initiator, and a peroxyester-based radical polymerization initiator, and a modifier (C) selected from a polyether modified siloxane compound represented by General Formula (c1) or a polyol compound represented by General Formula (c2). ##STR00001##

The present invention is directed to a polymerizable composition comprising (A) a reaction product of: (a) diethyleneglycol bischloroformate, ethyleneglycol bischloroformate, or combinations thereof; (b) allyl alcohol; (c) optionally, a cyclic polyol selected from the group consisting of a cycloaliphatic polyol having at least one secondary hydroxyl group, a heterocyclic polyol having primary and/or secondary hydroxyl groups, and mixtures thereof; and (d) optionally, at least one linear or branched aliphatic polyol having two to six hydroxyl groups; and (B) an organic peroxide comprising at least three peroxide groups. A polymerizate and/or an optical article comprising the polymerizable compositions of the invention are also provided.

The present invention is directed to a polymerizable composition comprising (A) a reaction product of: (a) diethyleneglycol bischloroformate, ethyleneglycol bischloroformate, or combinations thereof; (b) allyl alcohol; (c) optionally, a cyclic polyol selected from the group consisting of a cycloaliphatic polyol having at least one secondary hydroxyl group, a heterocyclic polyol having primary and/or secondary hydroxyl groups, and mixtures thereof; and (d) optionally, at least one linear or branched aliphatic polyol having two to six hydroxyl groups; and (B) an organic peroxide comprising at least three peroxide groups. A polymerizate and/or an optical article comprising the polymerizable compositions of the invention are also provided.

The present invention is directed to a polymerizable composition comprising (A) a reaction product of: (a) diethyleneglycol bischloroformate, ethyleneglycol bischloroformate, or combinations thereof; (b) allyl alcohol; (c) optionally, a cyclic polyol selected from the group consisting of a cycloaliphatic polyol having at least one secondary hydroxyl group, a heterocyclic polyol having primary and/or secondary hydroxyl groups, and mixtures thereof; and (d) optionally, at least one linear or branched aliphatic polyol having two to six hydroxyl groups; and (B) an organic peroxide comprising at least three peroxide groups. A polymerizate and/or an optical article comprising the polymerizable compositions of the invention are also provided.

An electrocaloric element for a heat transfer system includes an electrocaloric material of a copolymer of (i) vinylidene fluoride, and (ii) an addition polymerization monomer that is larger than vinylidene fluoride and includes a substituent more electronegative than chlorine. Electrodes are disposed on opposite surfaces of the electrocaloric material, and an electric power source is configured to provide voltage to the electrodes. The system also includes a first thermal flow path between the electrocaloric material and a heat sink, and a second thermal flow path between the electrocaloric material and a heat source.

An electrocaloric element for a heat transfer system includes an electrocaloric material of a copolymer of (i) vinylidene fluoride, and (ii) an addition polymerization monomer that is larger than vinylidene fluoride and includes a substituent more electronegative than chlorine. Electrodes are disposed on opposite surfaces of the electrocaloric material, and an electric power source is configured to provide voltage to the electrodes. The system also includes a first thermal flow path between the electrocaloric material and a heat sink, and a second thermal flow path between the electrocaloric material and a heat source.