Provided is a wavelength conversion member including: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and are dispersed in an organic matrix; and a barrier layer that is provided adjacent to at least one main surface of the wavelength conversion layer and includes silicon nitride and/or silicon oxynitride as a major component, in which the organic matrix is obtained by curing a curable composition including at least an alicyclic epoxy compound and includes a chemical structure A which is bonded to silicon nitride and/or silicon oxynitride as a major component of the barrier layer.

Provided is a wavelength conversion member including: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and are dispersed in an organic matrix; and a barrier layer that is provided adjacent to at least one main surface of the wavelength conversion layer and includes silicon nitride and/or silicon oxynitride as a major component, in which the organic matrix is obtained by curing a curable composition including at least an alicyclic epoxy compound and includes a chemical structure A which is bonded to silicon nitride and/or silicon oxynitride as a major component of the barrier layer.

Provided is an infrared reflective patterned product including: an infrared reflective pattern portion which includes an infrared reflective material in a region constituting at least a part of a support, in which the infrared reflective pattern portion has an uneven structure that includes a plurality of protruding portions and/or recessed portions, metal particles are contained on surfaces of the protruding portions and/or recessed portions of the uneven structure of the infrared reflective pattern portion, the metal particles include 60 number-percent or greater of tabular metal particles in a hexagonal shape or a circular shape, and the tabular metal particles which are plane-oriented so that an angle between a principal plane of the tabular metal particle and a surface of the uneven structure closest to the tabular metal particle is in a range of 0° to ±30° are adjusted to be 50 number-percent or greater of all tabular metal particles. In the infrared reflective patterned product, the ratio of the reflectance of the infrared reflective pattern portion at a wavelength with the highest reflectance in an infrared region of 780 nm to 2500 nm to the reflectance of a non-pattern portion is large in a case where the infrared reflective pattern portion is obliquely irradiated with infrared rays.

An aerial image display device capable of displaying a high-definition aerial image with sufficient luminance. An aerial image display device includes an image display device, a half mirror, and a retroreflector. The half mirror is a reflection-type polarizing plate. A λ/4 plate is provided between the reflection-type polarizing plate and the retroreflector. The retroreflector has a polarization-maintaining degree of 50% or more.

An aerial image display device capable of displaying a high-definition aerial image with sufficient luminance. An aerial image display device includes an image display device, a half mirror, and a retroreflector. The half mirror is a reflection-type polarizing plate. A λ/4 plate is provided between the reflection-type polarizing plate and the retroreflector. The retroreflector has a polarization-maintaining degree of 50% or more.

An electromagnetic wave absorbing laminated transparent base material includes a plurality of sheets of transparent base materials; and an electromagnetic wave absorbing particle dispersoid including at least electromagnetic wave absorbing particles and a thermoplastic resin. The electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency. The tungsten bronze is expressed by a general formula: M.sub.xWO.sub.3−y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0<y≤0.46). Oxygen vacancy concentration N.sub.V in the electromagnetic wave absorbing particles is greater than or equal to 4.3×10.sup.14 cm.sup.−3 and less than or equal to 8.0×10.sup.21 cm.sup.−3. The electromagnetic wave absorbing particle dispersoid is arranged between the plurality of sheets of the transparent base materials.

A light directing article comprises an acrylic polyvinyl acetal film to protect the optical elements of the light directing article. The acrylic polyvinyl acetal film has a Tg of at least 30° C. and comprises a (meth)acrylic polymer and polyvinyl acetal polymer. The acrylic polyvinyl acetal film is flexible and durable to mechanical deformation.

A light directing article comprises an acrylic polyvinyl acetal film to protect the optical elements of the light directing article. The acrylic polyvinyl acetal film has a Tg of at least 30° C. and comprises a (meth)acrylic polymer and polyvinyl acetal polymer. The acrylic polyvinyl acetal film is flexible and durable to mechanical deformation.

A reflective pavement marker for a roadway includes a body having a bottom adapted to be secured to the roadway and at least one a reflector on the body. The reflector includes an outer face for receiving light and an inner face comprising a plurality of light reflecting elements for receiving and reflecting the light back through the outer face. The reflector comprises a light transmitting and thermochromatic polymer adapted to transition at a predetermined transition temperature so as to change the color of the light reflected by the reflector depending on the temperature of the polymer. The predetermined transition temperature can be selected so that the color change of the light reflected by the reflector indicates freezing or near freezing road conditions.

A reflective pavement marker for a roadway includes a body having a bottom adapted to be secured to the roadway and at least one a reflector on the body. The reflector includes an outer face for receiving light and an inner face comprising a plurality of light reflecting elements for receiving and reflecting the light back through the outer face. The reflector comprises a light transmitting and thermochromatic polymer adapted to transition at a predetermined transition temperature so as to change the color of the light reflected by the reflector depending on the temperature of the polymer. The predetermined transition temperature can be selected so that the color change of the light reflected by the reflector indicates freezing or near freezing road conditions.