International Business Machines Corporation

Mitsubishi Gas Chemical Company, Inc.

Agc Inc.

Globalfoundries Inc.

Reuter Chemische Apparatebau E.k.

Shoko Suzuki

Noriyuki Kato

Shinya Ikeda

Kentaro Ishihara

Mitsuteru Kondo

Kensuke Oshima

Koji Hirose

Munenori Shiratake

Shuya Nagayama

Hiroki Hotaka

Kazuhiko Shiono

Shohei Hido

Masahiro Kanda

Tsuyoshi Ide

Tetsuya Nasukawa

Sachiko Yoshihama

Yohei Ikawa

Rikiya Takahashi

Katsushi Nishimori

Tatsunobu Ogata

Atsushi Motegi

Mitsutake Suematsu

Asana Yoshioka

Toshihiro Takahashi

Akira Tajima

Yuta Tsuboi

Hisashi Kashima

Sayuri Yamada

Karim Hamzaoui

Takayuki Osogami

Hiroshi Horikoshi

Seiji Munetoh

Daisuke Takuma

Issei Yoshida

Yoshiharu Ooi

Naohiko Uramoto

Karl Reuter

Hiroshi Kanayama

Florian Stolz

Chiaki Oishi

Hiromitsu Nagashima

Mark Kantor

Jun Tajima

Vasyl Andrushko

Mika Saito

Megumi Nakamura

Hiromichi Takatsuka

Kosuke Namiki

Sunao Nojima

Oshima Kensuke

An optical filter, including a first absorption layer containing a near-infrared absorbing dye and a transparent resin. The optical filter also includes a reflection layer. The first absorption layer has a thickness of 0.3 μm to 10 μm. The optical filter satisfies conditions described in the disclosure. An imaging apparatus including the optical filter.

Optical filter and imaging device

A thermoplastic resin composition that cuts visible light and has infrared light transmittance. A thermoplastic resin composition including a thermoplastic resin and a coloring material, wherein the refractive index at a wavelength of 894 nm is 1.60 or greater, and when the thickness of the thermoplastic resin composition is 1 mm, the maximum value of the transmittance of wavelengths of 380 nm-630 nm is greater than 0% and less than or equal to 1.00%, and the average transmittance of wavelengths of 840 nm-940 nm is greater than or equal to 80%.

Thermoplastic resin composition and optical member using same

Frequent sequences extracted from a set of documents according to a common rule are obtained. Based on comparing occurrence frequencies of various sequences, confidence of the first frequent sequence being a label expression representing a document part in a target document is evaluated. Keywords are extracted from the target document based on evaluation of the confidence.

Text mining based on document structure information extraction

Provided is an optical resin composition for lenses that contains a resin having a structural unit represented by formula (1), and a binaphthalene compound and/or a binaphthalene compound oligomer having a structural unit represented by formula (2). A, p, K, K, Z, and q in formula (1) are as described in the present specification. R-R, a, and b in formula (2) are as described in the present specification.

Resin composition, molded body, optical lens, and optical lens unit

The present invention relates to an optical filter containing: an absorption layer containing a near-infrared absorbing dye satisfying the following (i-1) to (i-5), and a transparent resin; and a reflection layer, and satisfying the following (ii-1);

Provided is an optical lens formed by integrally molding a lens part that is an optically effective portion and has a light incidence/emission surface, and a lens edge part that is an optically ineffective portion and has a surface thereof except the light incidence/emission surface. The lens edge part includes a non-transparent region in part or all thereof, the lens part and the lens edge part include a thermoplastic resin, and the non-transparent region in the lens edge part contains a total of 0.1-5 mass % of one or more of a black dye and a black pigment.

Optical lens and method for manufacturing same

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided.

Polycarbonate resin, method for producing the same, and optical lens

An optical resin material for chromatic aberration correction is provided including at least 5% by mass of a compound (component A) represented by formula (1) or formula (3), in which Rto Reach independently represent a structure represented by formula (2), in which the broken line represents a binding site; n1 represents an integer of 0 to 3; n2 represents an integer of 0 or 1; n3 represents an integer of 0 to 4; Rrepresents hydrogen, an acryl group, a methacryl group, a cyanoacryl group, a cyclic ether group, an allyl group, a propargyl group, a hydroxy group, an isocyanate group, chlorine, or an optionally branched alkyl group having 1 to 8 carbon atoms; and X represents an alkylene glycol chain having 2 to 7 carbon atoms or a lactone-modified ketone chain, in which Rto Reach independently represent a structure represented by formula (2).

Optical resin material for chromatic aberration correction

A computer-implemented method for extracting semantic relations is disclosed. In the method, a plurality of hierarchal structures that originates from a corpus of documents is obtained. Each hierarchal structure includes a plurality of elements having respective recitations included in a corresponding document. In the method, for each predetermined relationship between ancestor and descendant elements in the hierarchal structures, a first keyword list is extracted from the ancestor element and a second keyword list is extracted from the descendant element. A statistical index is calculated for each pair of first and second keywords using the first keyword lists and the second keyword lists. The index indicates a strength of association between the first and second keywords. In the method, a candidate list of keyword pairs having semantic relationships is output using the statistical index calculated for each pair.

Extraction of semantic relation

The present application provides a polycarbonate resin composition which has a high refractive index and a low Abbe number, and high thermal stability. The polycarbonate resin composition according to one embodiment of the present application includes a polycarbonate resin and an antioxidant, wherein the polycarbonate resin contains a constituent unit represented by general formula (1) (in general formula (1), X represents an alkylene group having 1-4 carbon atoms, and a and b each independently represent an integer of 1-10), and the antioxidant content is 1-3000 ppm. 

Polycarbonate resin composition, production method therefor, and optical lens

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided. 

Provided are a polycarbonate having an appropriate refractive index and an appropriate Abbe number, and comprehensively excelling in heat resistance, total light transmittance, and hue, and a molded article thereof. The polycarbonate includes a constituent unit represented by Formula [I] and a constituent unit having a hydrocarbon group containing a cyclic structure. In Formula [I], Rand Reach independently denote a hydrocarbon group, and each Rindependently denotes a hydrogen atom, a heteroatom-containing group, a halogen atom-containing group, a linear alkyl group having from 1 to 6 carbon atoms, a branched alkyl group having from 3 to 6 carbon atoms, or a group including an aryl group and having from 6 to 12 carbon atoms. 

Polycarbonate and molded article

A polycarbonate resin having a high refractive index, low Abbe number, and high moist heat resistance that includes structural units represented by general formula (1): 

Polycarbonate resin, method for producing same, and optical lens

The present invention relates to binaphthyl compounds of the formula (I), which are suitable as monomers for preparing polycarbonate resins having beneficial optical properties and which can be used for producing optical lenses: Formula (I) where X is C-C-alkandiyl or C-C-alkandiyl-C(O)&#x2014;, where C(O) is bound to the oxygen atom of the hydroxyl group and where C-C-alkandiyl or C-C-alkandiyl, respectively, are unsubstituted or carry a phenyl ring; R and R' are identical or different and selected from mono or polycyclic aryl having from 6 to 36 carbon atoms and mono- or polycyclic hetaryl having a total of 5 to 36 atoms, which are ring members, where 1, 2, 3 or 4 of these atoms are selected from nitrogen, sulfur and oxygen, while the remainder of these atoms are carbon atoms, where mono- or polycyclic aryl and mono- or polycyclic hetaryl are unsubstituted or carry 1 or 2 radicals R, which are selected from the group consisting of CN, CH, OCH, O-phenyl, O-naphthyl, S-phenyl, S-naphthyl, CI or F; and, if X is C-C-alkandiyl-C(O)&#x2014;, the esters thereof, in particular the C-C-alkylesters thereof. 

Binaphthyl compounds

To provide an optical filter having shielding effects against near ultraviolet rays and near infrared rays. An optical filter comprising a transparent resin body having a single layer or multilayer structure, and containing a near ultraviolet absorbing dye (U) which is a compound represented by the following formula (U) and which has an absorption maximum at a wavelength of from 370 to 425 nm and has a molar absorptivity at the maximum absorption wavelength of at least 50,000 [L/(mol&#xb7;cm)], and a near infrared absorbing dye (A) which has an absorption maximum at a wavelength of from 600 to 800 nm: In the formula (U), Y is an oxygen atom, a methylene group or a dimethylene group, Ris a monovalent hydrocarbon group which may have a substituent, or the like, Rto Rare a hydrogen atom, an alkyl group, an alkoxy group or the like, and X is a bivalent group represented by any one of the formulae (X1) to (X5) or the like.

Optical filter

Growing community of inventors

Tokyo, Japan

Shoko Suzuki