45results about How to "Great index of refraction" patented technology

A multilayered material is provided which includes a substrate and a silicon-containing film formed on the substrate, wherein the silicon-containing film has a nitrogen-rich area including silicon atoms and nitrogen atoms, or silicon atoms, nitrogen atoms, and an oxygen atoms and the nitrogen-rich area is formed by irradiating a polysilazane film formed on the substrate with an energy beam in an atmosphere not substantially including oxygen or water vapor and denaturing at least a part of the polysilazane film. A method of producing the multilayered material is also provided.

A method of displaying an image with variable perceived depth using a display (1) including one or more at least partially transparent, substantially parallel imaging screens (3) located in front of, and overlapping with, a rear imaging screen (4),

characterised in that a physical image is formed on two or more imaging screens (3,4), each image being of substantially identical configuration and being sized and aligned such that like portions of each image are coterminous to a viewer observing the display, wherein at least two of said coterminous images are displayed with different luminance.

According to the present invention, sufficient light trapping effect can be exhibited and series resistance can be kept small, by sequentially forming a silicon based low refractive index layer and a thin silicon based interface layer on a backside of a photoelectric conversion layer observed from a light incident side, and as a result a silicon based thin film solar cell may be provided efficiently and at low cost.

An advanced, very high transmittance, back-illuminated, silicon-on-sapphire wafer substrate design is presented for enabling high quantum efficiency and high resolution, silicon or silicon-germanium avalanche photodiode detector arrays. The wafer substrate incorporates a stacked antireflective bilayer between the sapphire and silicon layers, comprised of single crystal aluminum nitride (AlN) and non-stoichiometric, silicon rich, amorphous silicon nitride (a-SiN_X<1.33), that provides optimal refractive index matching between sapphire and silicon. A one quarter wavelength, magnesium fluoride (λ/4-MgF₂) antireflective layer deposited on the back surface of the thinned sapphire provides refractive index matching at the air-sapphire interface. Selecting a composition of x=0.62 for a-SiN_X, tunes an optimal refractive index for the layer. Selecting design thicknesses of 52 nm for single crystal AlN, 30 nm for a-SiN_0.62, and 120 nm for λ/4-MgF₂ yields a back-illuminated optical transmittance T>50% for 250-300 nm, T>70% for 300-400 nm and T>90% for 400-1100 nm.

The present invention relates to a coating composition containing metal oxide particles with a high refractive index and low photocatalytic activity and a coating film obtained by applying the coating composition onto a substrate. The coating composition contains metal oxide particles with a high refractive index obtained by coating the specific fine particles of the titanium-based oxide on their surfaces with at least a silica-based oxide or a silica-based composite oxide, and the coating film is obtained by applying the coating composition onto a substrate. The metal oxide particles with not only a high refractive index but also low photocatalytic activity, and therefore a coating film with excellent weathering resistance and light resistance can be formed on a substrate.

Embodiments are directed to glass frits containing phosphors that can be used in LED lighting devices and for methods associated therewith for making the phosphor containing glass frit and their use in glass articles, for example, LED devices.

A waveguide structure according to the invention comprises a core layer (10), having a refractive index n_core, and an array of rods (11) in the core layer having a refractive index n_rods. The refractive indices satisfy the inequality: n_rods>n_core. In a planar waveguide structure buffer (12) and cladding (13) layers are included, having a refractive index n_buffer and n_cladding respectively. The refractive indices then satisfy the inequality: n_rods>n_core>n_cladding and n_buffer. This condition provides greater vertical confinement of the E-field of an optical signal passing through the waveguide. Furthermore, it allows waveguides to be formed of a glassy material having a similar refractive index and core dimensions to that of a fiber. A high refractive index contrast within the photonic crystal region is used while totally eliminating the need for mode conversion to launch light in and out of the waveguide.

A solid-state imaging device includes: a light receiving portion formed on a semiconductor substrate; a multilayer structure formed on the semiconductor substrate, that includes an interlayer insulating film and a first concave portion at a position corresponding to the light receiving portion; and an optical waveguide formed in the first concave portion. The optical waveguide includes a first film and a second film formed sequentially from a side of the multilayer structure. The first film covers a side face and a bottom face of the first concave portion and includes a second concave portion. The second film is in contact with the first film and fills up the second concave portion. The thickness of the first film formed on the side face of the first concave portion is thinner at a top portion of the first concave portion than at the bottom portion thereof.

A grazing incidence interferometer includes: a beam splitting section configured to split a beam from a beam source section into a measuring beam emergent to a measurement surface and a reference beam serving as a measurement reference, and configured to cause the measuring beam to emerge obliquely to the measurement surface; a beam combining part configured to combine the reference beam and the measuring beam reflected at the measurement surface, to obtain a combined beam; a detecting section configured to detect a profile of the measurement surface based on an interference fringe formed by the combined beam; and an image inverting part configured to invert an orientation of a wave front of the measuring beam or the reference beam, the image inverting part being provided in an optical path of the measuring beam or the reference beam leading from the beam splitting section to the beam combining section.

A film for optical applications which effectively prevents reflection of light on the surface of image display devices such as PDP, CRT and LCD, exhibits excellent scratch resistance and transmission of light, provides excellent adhesion between layers and can be produced at a low cost is disclosed. The film comprises (A) a high refractivity hard coat layer (the refractive index: 1.60 to 1.75, the thickness: 2 to 20 μm) comprising (a) an antimony-doped tin oxide having a needle shape (the average particle diameter along the major axis: 0.05 to 10 μm, the average aspect ratio: 3 to 100), (b) at least one other metal oxide and (c) a material cured with an ionizing radiation and (B) a low refractivity layer (the refractive index: 1.30 to 1.45, the thickness: 40 to 200 nm), which are successively laminated at least on one face of a substrate film.

A material for protective film formation that is used to form an upper-layer protective film for a resist film and that contains at least a polymer component soluble in water or alkali and an alcohol containing a fluorine atom; and a method of forming a resist pattern with the use of the same. Consequently, not only can the degeneration of resist film during liquid immersion exposure by various liquids for liquid immersion exposure, for example, water and the degeneration of liquid immersion exposure liquids per se be simultaneously prevented in the liquid immersion exposure process, but also without inviting an increase of the number of processing steps, the resistance to post exposure delay of the resist film can be enhanced.

A method for providing a protective coating and enhanced optical qualities to a gemstone. The method includes coating a first portion and a second portion of a gemstone with TiO₂ doped with calcium oxide (TiO₂+). The TiO₂+ coated gemstone is next coated with a diamond like carbon (DLC) coating. The gemstone may be synthetic or natural. The composite gemstone, having been coated with both TiO₂ and DLC, exhibits high refractivity and enhanced wear resistance and color.

The present invention provides an optical film that can be suitably used for antiglare treatment to suppress blurry image and reduced contrast, as well as a method of producing such optical film. The optical film proposed by the present invention has a transparent base and a coating layer which is provided on at least one side of the transparent base and where transparent fine particles of 0.5 to 10 μm in average particle size are dispersed in a transparent resin phase, and one of the transparent resin phase or transparent fine particle contains a molecule-oriented high-molecular liquid crystal compound while the other is made of an optical isotropic resin.

A solid state imaging device includes photoelectric conversion portions for performing photoelectric conversion, and transfer portions for transferring signal charge occurring at the photoelectric conversion portions. Each transfer portion includes a transfer electrode formed of polysilicon film or the like, and an insulating coating film formed of a material such as a silicon nitride film and so forth, which has a higher relative dielectric constant than that of the silicon oxide, for coating the bottom face, the upper face, and both side faces, of the transfer electrode. The silicon nitride film is formed with a film thickness which is greater than 0 nm and smaller than 60 nm, on both sides of the transfer electrode.

The present invention is to provide a curable resin composition that is desirably used for manufacturing an optical part, in particular, an optical waveguide, that is superior in heat-resistant properties such as a heat-resistant decomposing property and a coloring-resistant property, and has its refractive index precisely controlled. The present invention provides a curable resin composition, comprising: (A) a monomer that contains a polycyclic alicyclic hydrocarbon skeleton and two or more terminal radical polymerizable groups, (B) a monomer that contains a perfluoroalkylene skeleton and two or more terminal radical polymerizable groups, and (C) a photopolymerization initiator and/or a thermal polymerization initiator. The present also provides an optical part, in particular, an optical waveguide, formed by photo-and/or thermo-curing the above curable resin composition.

Data is to be exchanged between a rotating element and a further element, with the rotating element being rotated by way of a hollow shaft. Light is coupled into torus halves and is reflected into a torus half and onto torus inner walls so often by way of a small opening until it exits at an opening of the other torus half. In a first embodiment, a torus-shaped optical fiber is divided into two torus halves. In another embodiment, hollow tori are used, which are filled with a fluid, namely either with a liquid or with air.