A curing system for an additive fabrication system includes a light source, a liquid crystal cell, and a first polarizer. The light source is configured to emit light at a wavelength suitable for curing a material. The liquid crystal cell is configured to receive the light from the light source. The first polarizer comprises a polyvinyl alcohol (PVA) matrix and organic dyes impregnated into the PVA matrix.

The present invention relates to urethane-acrylate-resin-based 3D-printed products having a colour distance E<20 from the L*a*b* coordinates for a colour number beginning with 2 of the RAL colour chart, comprising at least one orange methine dye dissolved therein, to the use of orange methine dyes for producing 3D-printed products having a colour distance E<20 from the L*a*b* coordinates for a colour number of the RAL colour chart beginning with 2 by photopolymerization-based 3D printing, and to a method for increasing the lightfastness and colouristic properties of photopolymerizable urethane-acrylate-resin-based compositions and 3D-printed products to be produced therefrom having a colour distance E<20 from the L*a*b* coordinates for a colour number beginning with 2 of the RAL colour chart by means of at least one orange methine dye dissolved therein.

The present specification relates to an optical film, and a display device including an optical film, comprising a dye or pigment absorbing at least some of a wavelength of 490 nm to 510 nm; having a transmission color of a D65 light source, a CIE standard illuminant, of 8<a*<8 and 8<b*<8, wherein a* indicates a direction the transmission color is leaned between red and green and b* indicates a direction the transmission color is leaned between yellow and blue; and satisfying the following Equations 1 and 2:
T%(500 nm)<T%(530 nm),[Equation 1]
[T%(500 nm)1.8]<[T%(460 nm)+T%(610 nm)][Equation 2] wherein, in Equations 1 and 2, T % (A nm) is transmittance at a wavelength of A nm.

An optical filter, including a first absorption layer containing a near-infrared absorbing dye and a transparent resin. The optical filter also includes a reflection layer. The first absorption layer has a thickness of 0.3 m to 10 m. The optical filter satisfies conditions described in the disclosure. An imaging apparatus including the optical filter.

A process can be used for manufacturing a coloured moulding composition with an improved optical appearance and a particularly high thermal stability. The process involves providing a thermoplastic polymer and adding a colouring preparation, or a liquid composition or a master batch containing the colouring preparation. Injection moulded parts and extruded parts can be composed of the coloured moulding composition.

The present invention relates to a hologram recording medium, a preparation method thereof, and an optical element including the same. As the hologram recording medium satisfies a specific element ratio, it not only is excellent in optical recording characteristics, but also exhibits excellent durability against heat and moisture, and can exhibit appropriate adhesive force to transparent adhesives and high transparency.

An optical filter, including a first absorption layer containing a near-infrared absorbing dye and a transparent resin. The optical filter also includes a reflection layer. The first absorption layer has a thickness of 0.3 m to 10 m. The optical filter satisfies conditions described in the disclosure. An imaging apparatus including the optical filter.

An infrared-absorbing composition includes particles of an infrared-absorbing coloring agent and a solvent, in which the particles in the infrared-absorbing composition have two or more maximal absorption wavelengths exhibited in a wavelength range of 650 to 1500 nm, and in the range, in a case where an absorbance at a maximal absorption wavelength existing on a second shortest wavelength side is set to 1, an absorbance at a maximal absorption wavelength existing on a shortest wavelength side is 0.6 to 2.0.

An infrared cut-off filter including a cyanine dye including a tris(pentafluoroethyl) trifluorophosphate anion and a cation having a polymethine and a nitrogen-containing heterocycle located at each end of the polymethine, and an acrylic polymer having a unit structure of formula (1).

A coloring tablet may have excellent solubility and redispersibility and a water-based ink composition for a writing instrument. Such a coloring tablet may contain at least a colorant and a dispersing agent. The dispersing agent may include a hydroxide neutralization product of an (meth)acrylic resin, a hydroxide neutralization product of a styrene-maleic acid copolymer resin, a polyoxyethylene-based surfactant, an alkyl condensed ring sulfonate, an amine ethylene oxide propylene oxide adduct, and/or a isobutylene-based polymer.