The present disclosure provides a line recognition module, a fabricating method thereof and a display device. A better collimating effect may be achieved only by fabricating an optical sensing structure on a substrate in the line recognition module and then directly fabricating at least two light shading layers and a light transmitting layer with relatively simple structures, and the device structure is light and thin, which can reduce the difficulty of processing the device. The problem that the yield is affected due to blistering caused by attaching a collimating structure to the line recognition module with use of an optically clear adhesive (OCA) is avoided. Moreover, since film layers are fabricated directly on the optical sensing structure to form the collimating structure, fabrication of the collimating structure may be accomplished by using a generic device for fabrication of the film layers on an array substrate without adding new fabrication equipment.

A light-shielding composition includes a light-shielding pigment, a resin, a polymerizable compound, which is a low-molecular-weight compound containing an ethylenically unsaturated group, and a polymerization initiator, in which the light-shielding pigment contains an inorganic particle, and an inorganic compound coating the inorganic particle, the inorganic particle contains one or more nitrogen-containing metal compounds selected from the group consisting of zirconium nitride, zirconium oxynitride, vanadium nitride, vanadium oxynitride, niobium nitride, and niobium oxynitride, the inorganic compound contains a silicon atom, and a contained atom number ratio of a total content of metallic atoms, which are selected from the group consisting of a zirconium atom, a vanadium atom, and a niobium atom, to a content of the silicon atom in a surface of the light-shielding pigment, as determined by X-ray photoelectron spectroscopy, is greater than 1.0.

A magnetic pigment flake includes a filtering film layer, with magnetic or magnetizable material, and a metal nanoparticles layer, formed on a surface of the filtering film layer. The metal nanoparticles layer is configured to generate scattered light enhanced by a local surface plasmon resonance under an irradiation of visible light exceeding a predetermined intensity. An optically variable ink includes an ink body and the above-mentioned magnetic pigment flakes. An anti-falsification article includes an article body and the above-mentioned optically variable ink. The magnetic pigment flake of the optically variable ink is magnetically oriented, such that a bright and dark areas are generated with a viewing angel changing under an irradiation of visible light below the predetermined intensity. Under an irradiation of visible light exceeding the predetermined intensity, light with a color different from that of the bright area is generated on a corresponding position of the dark area.

A driving mechanism is provided, including a base, a movable unit, and a movable part. The movable unit is movably disposed on the base and connected to an optical element. The movable part is movably disposed on the base and forms a passage. When the movable part moves from a first position to a second position relative to the base, the movable unit slides through the passage from an initial position to a limit position relative to the base.

A display device includes a display panel configured to display an image. A base member is disposed on the display panel and includes a display area and a non-display area adjacent to the display area. The base member has a first surface facing the display panel. A first groove is formed on the first surface in the non-display area. A first light blocking member is disposed on the first surface of the base member and extends along at least a portion of the first surface positioned between the display area and the first groove.

A light-emitting diode includes a first semiconductor region of one of p- or n-conductivity types, a second semiconductor region of the other one of p- or n-conductivity types, forming a p-n junction with the first semiconductor region, and a quantum well layer at the p-n junction between the first and second semiconductor regions. A hyperbolic metamaterial structure is provided in the second semiconductor region. The hyperbolic metamaterial structure is coupled to the quantum well layer for extracting light from the quantum well layer. The hyperbolic metamaterial structure may be patterned to provide an array of nanoantennas to apodize the emitted beam, and to control the polarization state of the emitted beam.

Described herein are optical phased array receivers. In various embodiments, an optical phased array receiver includes a set of antennas, each antenna configured to receive an optical signal; a local oscillator configured to generate one or more optical carrier signals; one or more optical signal combiners coupled to the set of antennas and the local oscillator, the one or more optical signal combiners configured to combine (i) the optical signals received by the antennas and (ii) the optical carrier signal; and one or more photodetectors configured to extract information carried by one or more of the received optical signals into an electrical signal, wherein the extracted information is indicative of a phase and an amplitude of the one or more of the received optical signals.

A method of increasing a fluorescence signal of a fluorophore is provided. The method includes dissolving the fluorophore in a solvent to form a solution and adding silver nanoparticles to the solution to form a mixture. The silver nanoparticles have a size of 3-10 nm, and the silver nanoparticles have an irregular shape and at least one fractal structure. The method further includes at least partially coating a substrate with the mixture to form a fluorescence sample and recording a fluorescence image of the fluorescence sample. The fluorophore is adsorbed to at least one silver nanoparticle and the fluorescence signal of the fluorescence image is higher than a fluorescence signal of a fluorescence image of the fluorophore without the silver nanoparticles.

A light control film comprises a light input surface and a light output surface opposite the light input surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface, wherein the absorptive regions comprise a core having a first concentration, C.sub.1, of a light absorbing material sandwiched between cladding layers having a second concentration, C.sub.2, of the light absorbing material, wherein C.sub.2 < C.sub.1, and wherein the cores have an aspect ratio of at least 20.

A laser detection and ranging (LADAR) device, including: a laser adapted to generate a laser emission path; an optical path scanning unit adapted to deflect the laser emission path and scan a target object using the laser emission path; a reflected light receiving unit coaxial to the laser emission path and adapted to receive a reflected light from the target object via the optical path scanning unit, and output an electric signal corresponding to the reflected light; a signal processing unit adapted to, according to the electric signal, generate distance information between the LADAR device and the target object, and process a plurality of acquired distance information, to yield position information of the target object; and a housing, including a filter disposed on the optical path of the optical path scanning unit.