Nippon Electric Glass Co., Ltd.

The University of Tokyo

Nagaoka University of Technology

Fumio Sato

Yoshimasa Matsushita

Tomoko Yamada

Hideo Yamauchi

Takahiro Matano

Junichi Ikejiri

Yoko Usui

Hiroyuki Inoue

Takashi Murata

Akihiko Sakamoto

Atsunobu Masuno

Tsuyoshi Honma

Takayuki Komatsu

Satoshi Nakata

Nobuo Hori

Provided is a thermally stable infrared-transmitting glass. An infrared-transmitting glass contains, in terms of % by mole, over 15 to 40% Ge, over 0 to 40% Ga, 40 to below 80% Te, 0 to 40% Si+Al+Ti+Cu+In+Sn+Bi+Cr+Sb+Zn+Mn+Cs+Ag+As+Pb, and 0 to 40% F+Cl+Br+I.

Infrared-transmitting glass

Provided is a thin beta-alumina-based solid electrolyte sheet having a high ion conduction value. The solid electrolyte sheet containing β-alumina and/or β″-alumina and having a thickness of 1 mm or less and a voidage of 20% or less.

Solid electrolyte sheet, method for manufacturing same, and sodium ion all-solid-state secondary cell

Provided is a thermally stable and inexpensive infrared-transmitting glass. An infrared-transmitting glass contains, in terms of % by mole, over 0 to 9% Ge, over 0 to 50% Ga, 50 to 90% Te, 0 to 40% Si+Al+Ti+Cu+In+Sn+Bi+Cr+Sb+Zn+Mn+Cs+Ag+As+Pb, and 0 to 40% F+Cl+Br+I.

The present invention achieves an infrared imaging lens which is excellent in performance capability such as aberration despite its wide angle of view and which is adaptable to a far infrared region. An infrared imaging lens () includes: a first lens (L) having negative refractive power; a second lens (L) which is a meniscus that is convex to an image surface side; and an image surface side lens group (G) having positive refractive power, the first lens, the second lens, and the image surface side lens group being disposed in this order from an object side to the image surface side, the first lens and the second lens each being made of glass having a refractive index of not less than 2.8 measured at a wavelength of 10 μm, and the infrared imaging lens having a half angle of view of not less than 60°.

Infrared imaging lens

Provided is a glass having an excellent infrared transmittance and suitable for use in infrared sensors. An infrared transmitting glass containing, in terms of % by mole, over 0 to 50% Ge, over 0 to 50% Ga, over 0 to 50% Si, 20 to 90% Te, 0 to 40% Ag+Al+Ti+Cu+In+Sn+Bi+Cr+Sb+Zn+Mn, and 0 to 40% F+Cl+Br+I.

Infrared transmitting glass

Provided is a small-diameter chalcogenide glass material having excellent weather resistance and mechanical strength and being suitable as an optical element for an infrared sensor. The chalcogenide glass material has an unpolished side surface, a pillar shape with a diameter of 15 mm or less, and a composition of, in terms of % by mole, 40 to 90% S+Se+Te and an inside of the glass material is free of stria with a length of 500 &#x3bc;m or more.

Chalcogenide glass material

Provided is a chalcogenide glass material having excellent weather resistance and being suitable as an optical element for an infrared sensor. The chalcogenide glass material contains, in terms of % by mole, 20 to 99% Te and has an antireflection film formed thereon.

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block () of glass raw material held levitated above a forming surface () of a forming die () by jetting gas through a gas jet hole () opening on the forming surface (), the block () of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block () of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block () of glass raw material or the molten glass.

Glass material manufacturing method and glass material manufacturing device

Provided is a method for manufacturing an infrared-transmissive lens having an excellent surface quality. A method for manufacturing an infrared-transmissive lens includes firing a preform of a chalcogenide glass in an inert gas atmosphere to obtain a fired body and then subjecting the fired body to hot press molding.

Method for manufacturing infrared-transmissible lens, infrared-transmissible lens, and infrared camera

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. A block () of glass raw material is heated and melted by irradiation with a plurality of laser beams with the block () of glass raw material held levitated, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. The plurality of laser beams include a first laser beam (A) and a second laser beam (B). A size (&#x3b8;) of an angle formed between the first laser beam (A) and the second laser beam (B) is 0&#xb0; or more but less than 180&#xb0;. A center (C) of a spot (S) of the first laser beam (A) on the surface of the block () of glass raw material and a center (C) of a spot (S) of the second laser beam (B) on the surface of the blockof glass raw material are different from each other.

Method for manufacturing glass material and device for manufacturing glass material

Provided is a thin beta-alumina-based solid electrolyte sheet having a high ion conduction value. The solid electrolyte sheet containing &#x3b2;-alumina and/or &#x3b2;&#x2033;-alumina and having a thickness of 1 mm or less and a voidage of 20% or less.

Provided is a method that enables a crystal-free glass material to be stably produced by a containerless levitation technique. A glass materialhas a first surfacefacing a forming surfaceand a second surfacelocated on a side opposite to the forming surface. The first surfaceincludes a central portionand a peripheral portionlocated outside of the central portion. Gas is jetted through a gas jet hole at a flow velocity and a flow volume at which a glass material satisfying R&#x3c;R&#x3c;Ris formed where Rrepresents a radius of curvature of the central portion, Rrepresents a radius of curvature of the peripheral portion, and Rrepresents a radius of curvature of the second surface

Method for producing glass material, device for producing glass material, and glass material

Provided is a novel infrared-transmitting glass that can be vitrified without containing any environmentally harmful compound and has high light transmissivity from visible range to a mid-infrared range of wavelengths of about 4 to about 8 &#x3bc;m. An infrared-transmitting glass containing, in % by mole, 50% or more TeO, 0 to 45% (exclusive of 0%) ZnO, and 0 to 50% (exclusive of 0% and 50%) RO (where R is at least one selected from the group consisting of Ca, Sr, and Ba).

Growing community of inventors

Otsu, Japan

Fumio Sato