Asahi Glass Company, Limited

Moritex Corporation

Yoshihiro Ohtsuka

Genichirou Enna

Hiroki Fukuda

Hiroshi Washita

Hisao Kawazoe

Toru Ishida

Motoi Kamba

Koji Horio

Syumei Tokuyama

An optical spectrum slicer capable of converting and outputting discontinuous spectrum lights having spectral components at a desired wavelength spacing from a broad band continuous spectrum light, with a simple constitution and at a reduced cost, the slider comprising a birefringent device having two polarization axes each orthogonal to an optical axis (z) and linear polarizers disposed at the light incident end and the light emission end thereof, with the direction of polarization being inclined by about 45&deg; relative to each of polarization axes, and a heat generator for controlling the temperature of the birefringent device thereby variably controlling each of wavelengths while maintaining the wavelength spacing of the discontinuous spectrum lights.

Optical spectrum slicer

Multichannel optical spectrum slicer and method of measuring modal birefringence and/or polarization mode dispersion of slicer itself

A lubricating oil for freezers, which is made of a polyether represented by the general formula (1): R &mdash;&lsqb;X&mdash;OR &rsqb; , wherein R represents an s-valent group having an aromatic nucleus, X represents a divalent group consisting of &mdash;OR &mdash; and &mdash;OR &mdash; groups (the numbers of which are q and r, respectively, on average), R represents an ethylene group which may have a methyl group or ethyl group, R represents an ethylene group having an alkoxymethyl group in which the alkoxyl group has 1 to 4 carbon atoms, and R represents an alkyl group having 1 to 10 carbon atoms, s is an integer of 1 to 6, q is 0 to 6, r is at least 0.5, and (q&plus;r)&times;s is 3 to 80, and which has a high compatibility with HFC refrigerant, a high stability to the hydrolisis and a high volume resistivity.

Polyether-containing composition suitable for use in a refrigerator

Method for producing a cement admixture, concrete and fluorine-containing oxyalkylene compounds

Cement admixture, concrete, and process for producing fluorooxyalylene compounds

A process for preparing an aqueous dispersion, which comprises subjecting a monomer to emulsion polymerization in an aqueous medium in the presence of a fluorine-containing copolymer comprising units derived from a fluoroolefin, and units having a hydrophilic side chain.

Process for preparing an aqueous dispersion, aqueous dispersion and

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Yokohama, Japan

Yoshihiro Ohtsuka