摘要:
A diffractive optical device includes a substrate for allowing transmission therethrough of light to be diffracted; and a grating section located on the substrate and including a plurality of grating elements each having multiple discrete phase levels. The plurality of grating elements are arranged at different grating periods in different areas of a surface of the substrate and have the phase levels in different numbers in accordance with the grating period.
摘要:
An image recognition device includes an input section for inputting an image; a pattern extraction section for extracting a plurality of predetermined patterns from the input image; a first feature extraction section for extracting a first feature indicating the direction in which the first pattern of the extracted predetermined patterns exists with respect to a point on a second pattern of the extracted predetermined patterns; a second feature extraction section for extracting a second feature indicating an amount of the first pattern existing in the direction with respect to the second pattern, based on the first feature; and a recognition section for recognizing the input image based on the second feature.
摘要:
In a thin film integrated device wherein thin film elements, such as thin film condensers, thin film field effect type transistors and thin film electroluminescent elements, which include insulating films (3, 7, 13, 15, 16) as one of their constitution elements, are formed on an insulating substrate; the insulating films are made of sputtered composite oxide films with at least tantalum and aluminum as major constituents. Since this sputtered composite oxide film has characteristics with a large dielectric constant and a breakdown field intensity and a small leakage current, if it is applied in the thin film elements, their operation characteristics can be increased and their reliability can be remarkably improved.
摘要:
An alternating copolymer comprising a repeating unit of the formula:--Z--(X--Y).sub.n-- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
An alternating copolymer comprising a repeating unit of the formula:--Z--(X--Y).sub.n -- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
An alternating copolymer comprising a repeating unit of the formula:-Z-(X-Y).sub.n - (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
An optical device of this invention includes; a semiconductor laser chip having an emitting end face for emitting laser light; a transparent substrate, allowing the laser light to transmit therethrough, having a first surface, and having a second surface facing the first surface; and a silicon substrate, located above the transparent substrate, having an oblique surface inclined with respect to the second surface, and having a parallel surface parallel to the second surface; wherein the semiconductor laser chip is located on the oblique surface of the silicon substrate; and the laser light emitted from the semiconductor laser chip propagates through the transparent substrate in a zigzag manner between the first surface and the second surface.
摘要:
A gas sensing device comprises a gas sensing element comprising a gas-sensitie resistive film formed of an aggregate of ultrafine particles of a suitable material deposited on the surface of a substrate of an electrical insulator formed with electrodes.
摘要:
A diffractive optical device includes a substrate for allowing transmission therethrough of light to be diffracted; and a grating section located on the substrate and including a plurality of grating elements each having multiple discrete phase levels. The plurality of grating elements are arranged at different grating periods in different areas of a surface of the substrate and have the phase levels in different numbers in accordance with the grating period.
摘要:
An object of the invention is to provide a pyroelectric type infrared sensor without external lens, made in a compact size, and having an improved sensibility. A pyroelectric element for detecting infrared rays is provided in a sealed tube (sealed body) having an opening, at said opening is provided an incident infrared ray filter. A diffraction optical lens (diffraction optical element) for focusing or imaging infrared rays is provided on the front or back surface of said incident infrared ray filter.