74results about How to "Improve anti-reflection ability" patented technology

An optical film having an optically-transparent substrate, and a low refractive index layer having a thickness d on one side of the optically-transparent substrate, a polarizing plate and a display panel provided with the same, and a display provided with the same.

In an optical device, a number of structures having higher portions or lower portions are arranged at a fine pitch equal to or shorter than a wavelength of visible light on a surface of a base. Each of the structures is arranged to form a plurality of arc track rows on the surface of the base, and to form a quasi-hexagonal lattice pattern, and the structure has an elliptical cone or truncated elliptical cone shape having a major axis in a circumferential direction of the arc tracks.

An image sensor device (100) is described comprising a semiconductor substrate (1), a MOS-based pixel structure and a planarization layer (30) on top. The planarization layer (30) is provided to avoid lensing due to the roughness of the pixel structure surface. The planarization layer (30) may be further optimized by adapting its thickness and refractive index to obtain anti-reflective coating properties for some regions in the image sensor device. This allows increasing the quantum efficiency and the spectral response of the image sensor device significantly.

One or more coated layers having a variation in index of refraction can provide improvements in antireflection property. For example, different sol gel formulations can be employed in a multiple coating step approach to achieve a desired gradation of index of refraction using individual or combinations of particles containing sol formulations. Different organic porosity forming agents, surfactants and binders can be used to provide further control in forming the gradual index of refraction. In addition, different heat and chemical treatment conditions could also provide control over the gradation of index of refraction.

The invention relates to a pump fiber combiner manufacturing method for a large power fiber laser. The pump fiber combiner manufacturing method comprises steps of: 1), selecting a quartz capillary; 2), processing the quartz capillary; 3), tabulating; 4), welding; and 5), packaging. The pump fiber combiner manufacturing method realizes omission of a fusion tapering process, generates no fiber deformation, greatly reduces insertion loss and improves pump efficiency.

It is an object to provide an optical transparent member capable of maintaining a high-performance antireflection effect for a base over a long period of time, and an optical system using the same, specifically an optical transparent member including on a base, a layer containing SiO 2 as a main component, a layer containing Al 2 O 3 as a main component, and a plate crystal layer formed from plate crystals containing Al 2 O 3 as a main component, wherein the surface of the plate crystal layer has a shape of irregularities, and an optical system using the same.

An anti-reflection coating having an three-layer structure comprising first to third layers formed in this order on a substrate, the substrate having a refractive index of 1.6-1.9, the first layer having a refractive index of 1.37-1.57, the second layer having a refractive index of 1.75-2.5, and the third layer having a refractive index of 1.18-1.32, to light in a wavelength range of 550 nm; the third layer being formed by silica aerogel; and the first and second layers containing no Al₂O₃.

The optical element of the present invention has an anti-reflection film formed on a substrate. The anti-reflection film comprises a low refractive index layer that is formed by mutually binding hollow fine particles, each of which has a vacancy therein, using a binder, and the low refractive index layer consists of a first layer serving as an outermost layer and a second layer which is adjacent to the first layer and is located on the substrate side. Here, the filling ratio of the binder to the first layer is lower than the filling ratio of the binder to the second layer, the refractive index of the first layer is 1.1 or more but not more than 1.25 and the refractive index of the second layer is 1.26 or more but not more than 1.35

It is aimed at finding out a surface pattern and physical properties required for an antireflective film having an excellent antireflective property for light, a light transmissivity, and the like, and at providing an antireflective film having such a specific surface pattern and physical properties, and a production method of the antireflective film; and provided for this object, is an antireflective film, obtained by: processing a surface of an aluminum material, by mechanical polishing, chemical polishing and/or electrolytic polishing; subsequently producing a pattern of mold having taper-shaped pores on the surface of the aluminum material, by combining a formation of an anodic oxide coating based on anodic oxidation of the surface of the aluminum material, with etching of the anodic oxide coating; and transferring the pattern of mold onto an antireflective film-forming material; wherein the antireflective film has, on a surface thereof, convexities having an average height between 100 nm inclusive and 1,000 nm inclusive, or concavities having an average depth between 100 nm inclusive and 1,000 nm inclusive, and the convexities or concavities are present at an average period between 50 nm inclusive and 400 nm inclusive, at least in a certain single direction; and wherein the antireflective film has a haze of 15% or less.

An object of the present invention is to provide an anti-reflection film excellent in high-temperature and high-humidity environment resistance and scratch resistance in addition to improved anti-reflection performance of a concave-convex nanostructure. To achieve the object, an anti-reflection film 10 comprises: a base layer 11 as a first optical thin film that is provided on an optical surface 21a of an optical element 21; a concave-convex nanostructure layer that is provided on a surface of the base layer 11 and is composed of a concave-convex nanostructure 12 formed so as to have a pitch width p between the convex parts 12b of shorter than an incident light wavelength; and a cover layer 13 as a second optical thin film that covers peaks of the convex part 12b with a void 14 being provided between the cover layer 13 and concave part 12a constituting the concave-convex nanostructure 12.

The present invention relates to a touch sensing electrode with a polarizing plate, a display device comprising the same, and a method for fabricating the same.

The touch sensing electrode with a polarizing plate according to the present invention comprises a touch sensing electrode capable of being folded and unfolded on its folding axis; a retardation film disposed on the touch sensing electrode and having a slow axis that forms an inclined angle with the folding axis; and a polarizing plate disposed on the retardation film.

The invention provides a subwavelength antireflective structure device and a manufacturing method of the subwavelength antireflective structure device. The subwavelength antireflective structure device comprises a flat-top subwavelength antireflective structure, and the flat-top subwavelength antireflective structure comprises a substrate and a flat-top surface microstructure etched on the substrate; the subwavelength antireflective structure device further comprises a non-flat-top structure, obtained in an oblique incidence depositional mode, above the flat-top surface microstructure; the non-flat-top structure and the substrate are made of the same material. Compared with the prior art, the subwavelength antireflective structure device can enhance the antireflective effect of a flat-top subwavelength antireflective structure in the prior art.

The application provides a preparation method of an optical film, the optical film, and a display panel. The preparation method of the optical film comprises the following steps of placing a pluralityof graphene sheets prepared in advance in a mixed solution to form an anti-reflection mixed solution; coating the anti-reflective mixed solution on a substrate; orienting the anti-reflective mixed solution by a magnetic field to deflect the plurality of graphene sheets in the anti-reflective mixed solution to a predetermined angle; and curing the anti-reflective mixed solution to form an anti-reflective layer on the substrate. In the application, by forming an anti-reflective layer having graphene sheets on the substrate, the graphene sheets can reduce reflection of the ambient light when external ambient light is irradiated onto the optical film, thereby improving the anti-reflective capability of the display panel and further improving the contrast of the display panel.

A sapphire substrate, of which transmittance is higher than 90%, includes two opposite surfaces, wherein at least one of the surfaces has a plurality of bumps thereon, and the surface roughness of the surface with the bumps is less than 100 nm. The distance between tops of two neighboring bumps is between 150 nm and 500 nm. Each of the bumps is higher than 60 nm. For each bump, the ratio of the height and the width of a bottom thereof connected to the corresponding surface is greater than 0.4. The sapphire substrate can be used in products such as all kinds of lens protective covers, panels, and smart phones.