A transparent optical device (100) is provided, comprising a lightguide medium (101) configured for light propagation, and an at least one optically functional layer (10) comprising at least one optically functional feature pattern (11) formed in a light-transmitting carrier medium (11 1) by a plurality of embedded features provided as optically functional internal cavities (12), wherein said at least one feature pattern (11) is configured to perform an incident light control function and at least a light outcoupling function, whereby stray light is minimized and optical transparency of the device (100) is established.

The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.

A laser scanner can include a housing, a window, and a light emitting system, which can output laser pulses of a first wavelength through the window. A light detection system can receive light of the laser pulses that is reflected by an object through the window and direct the received light to an optical sensor that generates electrical signals from the received light. A controller can make a determination regarding a presence or position of the object based on the electrical signals. The scanner can have one or more light sources for illuminating the window with light of a second wavelength. The window can have diffusing features configured to diffuse the output light of the second wavelength. The controller can operate the one or more light sources in response to the determination regarding the presence or position of the object to provide a visual indication of the determination.

A system and method are provided for forming body structures including energy filters/shutter components, including energy/light directing/scattering layers that are actively electrically switchable. The filters or components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers, including electric fields generated between a pair of transparent electrodes sandwiching an energy scattering layer. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields.

A structure for extracting light, which improves light extraction efficiency by enhancing a scattering effect and improves power efficiency and thus increases the lifetime of an organic electroluminescent lighting device, is provided, and an organic electroluminescent lighting device including the structure for extracting light is also provided.

Hollow particles each having a shell composed of at least one layer, wherein the at least one layer contains a nitrogen atom-containing resin having a refractive index of 1.57 or less.

Provided is a light therapy device capable of further maximizing a scattering effect, having enhanced durability, and exhibiting energy uniformity sufficient for use as a light therapy device.

To provide a translucent structure having a low haze factor and low sparkle. The translucent structure has an uneven structure at the surface thereof, wherein the uneven structure includes first convex portions 5a, of which the diameters at a height of the bearing height+0.05 μm of the surface shape (a), obtainable by measuring the uneven structure by a laser microscope, are at least 1 μm, and in an image (c) in which a plurality of convex portions are scattered, obtained by filtering the surface shape (a) by image processing software to obtain a smoothing image (b), and subtracting XYZ data of the smoothing image (b) from XYZ data of the surface shape (a), said plurality of convex portions include second convex portions 5b, of which the diameters at a height of 0.01 μm when the bearing height is deemed to be 0, are at least 0.4 μm, the density of the second convex portions is from 0.023 to 7.210 units/μm.sup.2, and the proportion of the total area in cross-section at a height of 0.01 μm of the second convex portions 5b is from 0.900 to 90.000%.

A process of making a diverging-light fiber optics illumination delivery system includes providing a micro-post comprising a glass-ceramic light-scattering element that includes at least one of a ceramic, a glass ceramic, an immiscible glass, a porous glass, opal glass, amorphous glass, an aerated glass, and a nanostructured glass; and fusion-splicing the glass-ceramic micro-post to the optical fiber by pulling an arc between electrodes across a gap formed by the optical fiber and the glass-ceramic micro-post; maintaining the arc for a time sufficiently long to make facing surfaces of the optical fiber and the micro-post one of malleable and molten; and pushing and thereby fusing together the facing surfaces of the optical fiber and the micro-post. Some embodiments can include fusing the glass-ceramic micro-post to the optical fiber by applying a laser beam to heat up at least one of the facing surfaces of the optical fiber and the glass-ceramic micro-post.

Described herein are methods and compositions relating to tunable nanoporous coatings. In certain aspects, described herein are methods and compositions wherein a tunable nanoporous coating comprises a tunable nanoporous membrane which transitions from opaque to transparent upon the application of force, and from transparent to opaque after washing with a solvent.