Fujifilm Corporation

Shigenori Yuuya

Takashi Nakamura

Shinichiro Sonoda

Shinya Hakuta

Katsuhiro Kohda

Provided is an optical member, including: a substrate having an at least partially curved surface; a concave-convex structure at an outermost surface, the concave-convex structure being prepared by hydrothermal treatment of a layer formed by gas-phase deposition of at least one of simple aluminum and a compound containing aluminum on the substrate; and a dielectric layer formed by gas-phase deposition between the substrate and the concave-convex structure.

Optical member and method for producing same

A semiconductor device includes a semiconductor circuit on an insulated metal substrate, which includes an anodized film formed on at least one side of an Al substrate, wherein the Al substrate has a potential higher than an average potential of the semiconductor circuit when the semiconductor circuit is driven.

Semiconductor device and solar battery using the same

Piezoelectric performance is improved in a piezoelectric ceramic having a perovskite-type crystal structure expressed by a general formula ABOand the B-site element including niobium. The piezoelectric ceramic has a perovskite-type crystal structure in which plural octahedrons formed of oxygen are arranged to share vertices thereof and elements are located at a center of eight octahedrons and at a center of each octahedron; wherein an element located at the center of eight octahedrons is A-site element, an element located at the center of each octahedron is B-site element, and a general formula of the perovskite-type crystal structure is ABO; the B-site element includes niobium (Nb); and bismuth (Bi) content in composition of the piezoelectric ceramic is 100 ppm by weight or less.

Piezoelectric ceramic and method of manufacturing the same

A backing material that is advantageous in insulation property and can realize a desired acoustic impedance without making the cross-linking and curing reaction of elastomer or resin as a parent material unstable. The backing material is provided on a backside of vibrators for transmitting and/or receiving ultrasonic waves in an ultrasonic probe, and the backing material includes: a parent material containing elastomer or resin and having an insulation property; and composite powder dispersed to fill the parent material, and the composite powder includes powder of a material having a larger acoustic impedance than that of the parent material and an insulation coating for covering a surface of the powder, and the insulation coating contains an oxide of an element of group XIII to group XV except for carbon (C), nitrogen (N), phosphorus (P).

Ultrasonic probe, backing material for ultrasonic probe, and method of manufacturing the same

A photo-conductor, which is adapted for use in constituting a radiation detector and which is capable of forming electric charges by being exposed to radiation, contains BiMO, in which M represents at least one kind of element selected from the group consisting of Ge, Si, and Ti. The photo-conductor has characteristics such that a proportion of a diffuse reflectivity at a wavelength of 450 nm with respect to the diffuse reflectivity at a wavelength of 600 nm is equal to at least 75%.

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Ashigarakami-gun, Japan

Shigenori Yuuya