National Institute of Advanced Industrial Science and Technology

Isuzu Glass Company, Ltd.

Agency of Industrial Science and Technology

Central Glass Company, Limited

Kyoto Institute of Technology

Secretary, Agency of Industrial Science and Technology

Kohei Kadono

Toshihiko Einishi

Tatsuya Suetsugu

Takashi Tarumi

Masanori Ando

Naoko Kaga

Takeshi Ohtani

Norimasa Kominami

Hiroaki Yokoi

Minoru Takada

Masatake Haruta

Tomoko Akai

Masaru Miya

Masaru Yamashita

Toru Sakaguchi

Tetsuo Yazawa

Kazuhisa Kimura

Yoshinobu Matsumura

Naoto Yamashita

Shinji Nishikawa

Takashi Yamate

Hiroshi Tanaka

Kenichi Kinugawa

Kunihiko Tani

Koji Ohta

Hiroyuki Tamon

Takashi Wakasugi

Maki Tanigawa

Tomoyo Ashida

Takeshi Morihara

Takaharu Hosokawa

Naoki Kikuchi

Kiyoshi Shinohara

Tadashi Hasegawa

Hiroshi Uemura

Keiko Tawa

Arifumi Okada

Kenji Kamada

Takeyuki Tanaka

The present invention provides an infrared-transmitting glass that is a chalcogenide glass, has a reduced Ge content, can sufficiently cover atmospheric windows, is free from highly toxic elements, such as Se and As, and is suitable for mold forming. Specifically, the present invention provides an infrared-transmitting glass suitable for mold forming, comprising, in terms of molar concentration:

Infrared-transmitting glass suitable for mold forming

The purpose of the present invention is to use chalcogenide glass to produce an infrared transmitting glass that is more suitable for mold-forming than the conventional glasses. Specifically, the invention provides an infrared transmitting glass for mold forming which contains, in molar concentrations, 2-22% of Ge, 6-34% of at least one element selected from the group consisting of Sb and Bi, 1-20% of at least one element selected from the group consisting of Sn and Zn and 58-70% of at least one element chosen from the group comprising S, Se and Te.

Infrared transmitting glass for mold forming

The present invention provides a blue-violet light blocking glass containing copper (I) halide fine particles that satisfactorily transmits light having a wavelength of 450 nm to 600 nm and sharply blocks light having a wavelength shorter than 450 nm. Specifically, the present invention provides a blue-violet light blocking glass containing a copper (I) halide and silver; for example, 20 to 85% by weight of SiO; 2 to 75% by weight of BO; not more than 10% by weight of AlO; 2 to 30% by weight of at least one member selected from the group consisting of LiO, NaO, KO, RbO and CsO; 1 to 15% by weight of at least one member selected from the group consisting of MgO, CaO, SrO, BaO and ZnO; not more than 10% by weight of at least one member selected from the group consisting of PbO, NbO, ZrO, LaO, YO, TaOand GdO; not more than 5% by weight of at least one member selected from the group consisting of SbOand AsO; not more than 5% by weight of SnO; 0.01 to 10% by weight of a copper (I) halide; and 0.001 to 1% by weight of silver calculated on a metal basis.

Blue-violet light blocking glass

A transparent white fluorescent glass is provided which contains a soda lime glass as a base material, 0.8 to 2.5 wt % of Sn, calculated as SnO, and 0.045 wt % or less of Fe, calculated as FeO, and a transparent white fluorescent glass which contains the soda lime glass as a base material, 0.8 to 2.5 wt % of Sn, calculated as SnO, and 0.02 to 0.14 wt % of Ce, calculated as CeO. This fluorescent glass can be suitably used for producing at low cost a large plate material having a size that is several tens of centimeters or more that is easy and simple to operate and exhibits satisfactory white fluorescence by ultraviolet ray irradiation.

Transparent fluorescent glass

The present invention provides a method of producing a graded refractive index optical element, the method being capable of easily forming a graded refractive index distribution in a desired portion of a glass substrate without the need for a specific treatment atmosphere, and without using a molten salt. More specifically, the present invention provides a method of producing a graded refractive index optical element comprising applying a paste containing a copper compound, an organic resin and an organic solvent to a glass substrate containing an alkali metal component as a glass component, and then performing heat treatment at a temperature below the softening temperature of the glass substrate.

Method for manufacturing optical element of refractive index distribution type

The present invention provides a method of producing an optical element without the need for high vacuum, unlike the thin film deposition methods, and without using a molten salt. More specifically, the invention provides a method of producing an optical element comprising applying a paste containing at least one compound selected from lithium compounds, potassium compounds, rubidium compounds, cesium compounds, silver compounds, and thallium compounds, an organic resin, and an organic solvent to a glass substrate containing an alkali metal component as a glass component and then performing heat treatment at a temperature below the softening temperature of the glass substrate.

Process for producing optical device

The present invention provides a novel glass material that allows the production of a glass product having both excellent chemical durability and high precision by a press molding method. Specifically, the present invention provides a glass for press molding, comprising 38% to 45% by weight of SiO, 18% to 27% by weight of BO, 16% to 25% by weight of AlO, 2% to 12% by weight of ZnO, no more than 3% by weight of MgO, no more than 3% by weight of CaO, no more than 3% by weight of BaO, 13% to 18% by weight of LiO, no more than 3% by weight of KO, and no more than 2% by weight of NaO; wherein the glass has a deformation temperature of 520&#xb0; C. or lower; and the glass has a water resistance of grade 2 or higher as measured according to the Japanese Optical Glass Industrial Standard method for measuring the chemical durability of an optical glass.

Glass for press molding

The present invention provides a method for forming an optical waveguide characterized by applying a paste containing a copper compound to a glass substrate containing an alkali metal as a glass component over the whole surface thereof or in a patterned form, and performing heat treatment at a temperature lower than the softening temperature of the glass substrate. The method of the invention can produce an optical waveguide without the need for a high vacuum as in the thin film deposition method and without the use of a molten salt, and is capable of dispersing Cuions selectively in a glass substrate with excellent controllability.

Method for forming optical waveguide

The invention relates to a method for putting color to glass. This method includes the steps of (a) introducing a laser beam into an interferometer such that the laser beam is split into at least first and second laser beams in the interferometer and that the at least first and second laser beams come out of the interferometer; and (b) irradiating a glass with the at least first and second laser beams to write a plurality of lines simultaneously on a surface of the glass and/or in an inside of the glass.

Method for putting color to glass

Optical power limiting material

There are provided a third-order nonlinear optical material comprising a film formed on the surface of a transparent substrate and consisting essentially of an oxide of a metal selected from the group consisting of V, Cr, Mn, Fe, Co, Ni and Cu; and a third-order nonlinear optical material of the type as described above wherein the film additionally contains a metal selected from the group consisting of Au, Ag and Cu in the form of particles dispersed therein and having a particle size of at most 500 nm. The present invention also provides a process for producing a third-order nonlinear optical material by dispersing and depositing in a transparent matrix an oxide of a metal selected from the group consisting of V, Cr, Mn, Fe, Co, Ni and Cu in the form of particles having a particle size of at most 500 nm; a process of the type as described above wherein a metal selected from the group consisting of Au, Ag and Cu in the form of particles having a particle size of at most 500 nm is simultaneously dispersed and deposited in a transparent matrix. The present invention further provides third-order nonlinear optical materials produced according to the process of the present invention.

Nonlinear optical materials and process for producing the same

There are provided a third-order nonlinear optical material comprising a film formed on the surface of a transparent substrate and consisting essentially of an oxide of a metal selected from the group consisting of V, Cr, Mn, Fe, Co, Ni and Cu; and a third-order nonlinear optical material of the type as described above wherein the film additionally contains a metal selected from the group consisting of Au, Ag and Cu in the form of particles dispersed therein and having a particle size of at most 500 nm.

The present invention discloses a lithium ion conductive glass electrolyte including a cationic component and an anionic component, the cationic component including (A) a lithium ion, (B) alkaline earth metal ions and (C) alkali metal ions other than lithium in a percentage composition falling within a region enclosed by the straight lines formed by connecting, in an ionic ratio diagram, points of A(60, 10, 30), B(70, 0, 30), C(40, 0, 60) and D(40, 10, 50) in order, the anionic component being at least one halide ion selected from among chloride, bromide and iodide ions.

Lithium ion conductive glass electrolyte

Growing community of inventors

Ikeda, Japan

Kohei Kadono