531 results about "Optical membrane" patented technology

An optical membrane device and method for making such a device are described. This membrane is notable in that it comprises an optically curved surface. In some embodiments, this curved optical surface is optically concave and coated, for example, with a highly reflecting (HR) coating to create a curved mirror. In other embodiments, the optical surface is optically convex and coated with, preferably, an antireflective (AR) coating to function as a refractive or diffractive lens.

The invention discloses a preparation method of a core-shell structural perovskite quantum dot, which includes steps of configuring CsX and PbX2 precursor solutions respectively, mixing CsX precursor solution with PbX2 precursor solution, and generating a structure of coating CsPbX3 nano-crystal by Cs4PbX6 micro-crystal; separating and washing the compounded sediment; then dispersing the sediment in the solvent and introducing a ligand; performing membrane treatment on the solution after introducing the ligand to be a perovskite nanometer membrane; or separating again and vacuum-drying to be perovskite nanometer crystal powder. The core-shell structural perovskite nanometer crystal material can be dispersed in the organic solvent and prepared to be a quantum dot optical membrane; the quantum dot optical membrane is applied to a lighting diode liquid crystal display device and has stability to water, oxygen, heat, light and others.

A laminated optical film contributing production of thin-shaped liquid crystal panels and liquid crystal displays and manufactured by a simplified production process and a laminated optical film manufacturing method are provided. The laminated optical film is used for liquid crystal displays and placed on the viewed side of the liquid crystal cells. The film is composed of a polarizer and a phase difference layer which is disposed on one side of the polarizer, whose refractive index ellipsoid satisfies a relation nx>ny=nz, and whose parallel phase difference value Re[590] ranges from 90 to 190 nm. The angle between the absorption axis of the polarizer and the slow axis of the phase difference layer ranges from 5 to 85 DEG . The phase difference layer is made of a liquid crystal material and disposed nearer to the viewed side than the polarizer.

The invention provides a backlight module. The backlight module comprises a back plate, a reflecting sheet arranged in the back plate, a light guide plate arranged on the reflecting sheet, an optical membrane assembly arranged on the light guide plate, a backlight source arranged in the back plate and facing the light guide plate, a frame arranged on the back plate, and an elastic retaining wall arranged above the light incident end of the backlight source and the light guide plate and fixed on the frame in a plugging, attaching or clamping manner, wherein the elastic retaining wall includes a bottom surface and a side surface vertical to the bottom surface; and the bottom surface and the side surface keep close contact with the upper surface of the light guide plate and the backlight source. The elastic retaining wall made of white rubber and having elasticity is fixed on the frame in the plugging, attaching or clamping manner and keeps close contact with the light guide plate and the upper surface of an LED (light emitting diode) lamp, so that the elastic retaining wall can reflect light back to the light guide plate to well prevent the light from being emitted from a gap on the light incident side, thereby solving the problem of incident-side light leakage of the backlight module and improving the light efficiency of the backlight module.

An optic film has a surface on which a plurality of rib-like micro light guides is formed. Each light guide includes a plurality of ridges, which are of different height and shows variation of height. Either a high ridge or a low ridge of the light guide is made a continuous left-and-right wavy configuration and / or a continuous up-and-down height-variation configuration. Thus, light transmitting through the optic film and converged by the light guides leaves the optic film in a form that is not very regular so as to facilitate subsequent use of the light in for example a liquid crystal panel.

The invention provides a support device of a liquid crystal display module and comprises a backboard which is provided with a bottom plate and a plurality of support plates; the bottom plate is provided with a reflection plate, a light guide plate and an optical membrane module; the support device also comprises a rubber frame; a plurality of platforms extend out from the rubber frame and are arranged on the upward side of the optical membrane module, moreover, certain space is remained between the platforms and the optical membrane module; at least one platform is provided with a convex rib and the optical membrane module is provided with a through hole corresponding to the convex rib, moreover, each convex rib gets through the corresponding through hole on the optical membrane module and plays a role of support between the platform and the light guide plate. As the support point of the convex rib providing support for the platform is close to the free terminal of the platform, the convex rib can ensure the distance between the platform and the optical membrane module and prevent the optical membrane module from waving deformation under high temperature state.

An IOL includes a fluid optic body having a cavity defined by a sidewall, a deformable optical membrane intersecting the sidewall around an anterior circumference of the sidewall, and a posterior optic intersecting the sidewall around a posterior circumference of the sidewall. The posterior optic includes a central protrusion extending anteriorly into the cavity and the deformable optical membrane includes a ring-shaped protrusion extending posteriorly into a space between the sidewall and the central protrusion. A second optic body is spaced apart from the fluid optic body and coupled thereto via a plurality of struts. Axial compression causes the plurality of struts to deform the sidewall in a manner that increases the diameter of the cavity, modifying a curvature of the deformable optical membrane is modified. Contact between the ring-shaped protrusion and the central protrusion defines a maximum modification to the curvature of the deformable optical membrane.

The invention provides a liquid crystal display device. The liquid crystal display device comprises a backlight module (20), a rubber frame (40) arranged above the backlight module (20), a liquid crystal display panel (60) installed in the rubber frame (40) and a front frame (80) installed on the liquid crystal display panel (60), wherein the backlight module (20) comprises a backboard (2), a light guide panel (4) arranged in the backboard (2), a backlight source (6) arranged in the backboard (2) and an optical membrane set (8) arranged on the light guide panel (4); the backlight source (6) comprises a printed circuit board (62) and a plurality of LED lamps (64) which are installed and electrically connected to the printed circuit board (62); the printed circuit board (62) comprises a side portion (622) and a bottom (624) vertically connected to the side portion (622); the rubber frame (40) is provided with an opening groove (42) corresponding to the backlight source (6); the side portion (622) of the printed circuit board (62) is contained in the opening groove (42).