Provided is a reflective glitter heat transfer sheet combined with a retroreflective structure, the reflective glitter heat transfer sheet including: a reflective glitter layer having glass beads and glitter particles arranged in an adhesive attached to a carrier film. The glass beads and the glitter particles are held in a state of being arranged in the adhesive by the adhesive, each of the glass beads is a retroreflector for achieving retroreflection, and each of the glitter particles is a reflector for achieving diffuse reflection. A primer layer is disposed on the reflective glitter layer, and a hot melt layer is formed on the primer layer for conducting heat transfer to an article to which the reflective glitter heat transfer sheet is to be applied.

Optical articles including a spatially defined arrangement of a plurality of data rich retroreflective elements, wherein the plurality of retroreflective elements comprise retroreflective elements having at least two different retroreflective properties and at least two different optical contrasts with respect to a background substrate when observed within an ultraviolet spectrum, a visible spectrum, a near-infrared spectrum, or a combination thereof.

Optical articles including a spatially defined arrangement of a plurality of data rich retroreflective elements, wherein the plurality of retroreflective elements comprise retroreflective elements having at least two different retroreflective properties and at least two different optical contrasts with respect to a background substrate when observed within an ultraviolet spectrum, a visible spectrum, a near-infrared spectrum, or a combination thereof.

Electromagnetic wave absorbing particles are provided that include hexagonal tungsten bronze having oxygen deficiency, wherein 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), and wherein oxygen vacancy concentration N.sub.v in the electromagnetic wave absorbing particles is greater than or equal to 3×10.sup.14 cm.sup.−3 and less than or equal to 8.0×10.sup.21 cm.sup.−3.

A portable detection system comprises an energy source configured to transmit energy, a retroreflective article, a detector configured to sense retroreflective energy produced by interaction of the energy transmitted from the source and the retroreflective article, and an indicator that indicates the detection of the retroreflective energy, wherein at least one of the energy source and the detector are configured to be worn by a user.

Techniques are described for facilitating the coordination of audio video (AV) production using multiple actors in respective locations that are remote from each other, such that an integrated AV product can be generated by coordinating the activities of multiple remote actors in concert with one another. Motion capture (mocap) of multiple actors who are geographically distant from each other is facilitated.

A license plate assembly includes a backing and a flexible license plate. The flexible license plate includes plural layers, including a licensing-information layer, in which ink is deposited in the form of alphanumeric characters on an underlying one of the plural layers, the alphanumeric characters providing license information. The flexible license plate optionally includes one or more holograms, and/or watermarks, and/or QR-codes. The flexible license plate is disposed on the backing, which extends beyond the perimeter of the flexible license plate, defining a marginal region. In some embodiments, plural indices are disposed in the marginal region to facilitate alignment of flexible license plate during installation thereof on a motor vehicle.

An optical system is disclosed and includes an optical sensor, a plurality of photosensitive pixels disposed on the optical sensor, a wavelength-selective optical filter in optical communication with the photosensitive pixels, the wavelength-selective optical filter being disposed remotely from the optical sensor, an area disposed in the wavelength-selective optical filter, the area having a transmission spectrum different from a transmission spectrum of a portion of the wavelength-selective optical filter not in the area and a reflector, the wavelength-selective optical filter and a measurement subject each being disposed between the reflector and the optical sensor along an optical path.

The present disclosure provides for articles having structural color and methods of making articles having structural color. In an aspect, the present disclosure provides for articles that exhibit structural colors through the use of an optical unit. The optical unit, which is composed of at least two units, is disposed on a substrate (e.g., the surface of the article) and when exposed to visible light, the optical unit imparts a first structural color and a second structural to the article, where each structural color is visible color produced, at least in part, through optical effects.

A display device (1A) according to the present invention includes a first light source, a first retro-reflective part disposed at a position in an emission direction of first light emitted from the first light source, and a first light-separating part configured to reflect a part of the first light that has passed through the first retro-reflective part as a first reflected light and transmits at least a part of the first reflected light.