Abstract: An oil deterioration diagnosing method and an apparatus for carrying out the same uses an optical sensor capable of determining a degree of deterioration of oil on the basis of transmission losses of near-infrared rays of two different wavelengths and the transmission loss difference between the transmission losses. The degree of deterioration of the oil can be determined without being affected by variable measuring temperature and the original color of the oil.

Abstract: Optical signals of which wavelength is multipled and which are transferred via an optical fiber 10 make incidence to refractive index distributing lens 34 and are converted into substantially parallel light beams, the optical signals converted make incidence into a polarized light conversion element 20a and are separated therein into two light beams and are emitted in a form of two linear polarized light beams of which polarization direction are aligned. The linear polarized light beams are separated by wavelength separation filters 28a, 28b and 28c, and make incidence with every two wavelength components either into a polarized light conversion element 20b or into polarized light conversion element 20c, and the optical paths for the light beams separated into two by the polarized light conversion element 20a are joined to form one light beam path for every waveform component.

Abstract: An oil deterioration diagnosing method and an apparatus for carrying out the same uses an optical sensor capable of determining a degree of deterioration of oil on the basis of transmission losses of near-infrared rays of two different wavelengths and the transmission loss difference between the transmission losses. The degree of deterioration of the oil can be determined without being affected by variable measuring temperature and the original color of the oil.

Abstract: The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor, which is an organic compound containing at least one of nitrogen or sulfur having a lone pair of electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.

Abstract: A heat resistant resin composition obtained by heat treating a poly(amic acid) varnish comprising a poly(amic acid), an organic silicic compound having a functional group capable of bringing about an addition reaction with at least one of NH group and COOH group of the poly(amic acid), and water, followed by thermal curing, is excellent in heat resistance, small in changes in thermal expansion coefficient and modulus of elasticity at high temperatures, and hardly generating cracks and peeling.

Abstract: The present photo-curable resin composition, at least one of which comprises an organic silicic compound, an epoxy resin and a photo initiator capable of polymerizing the organic silicic compound or epoxy resin upon absorption of actinic ray, undergoes polymerization and curing upon absorption of actinic ray, and is suitably applied to multilayered wiring boards and semiconductor devices because its cured product can maintain a desired modulus of elasticity at temperatures as high as or higher than Tg without any decrease in the bonding strength at elevated temperatures and with less development of cracks or peeling.

Abstract: An insulating material of high electrically insulating properties and high thermal conductivity is provided wherein the high thermal conductivity is attained by having a liquid crystal resin comprising a polymerization product of a resin composition containing a monomer which has a mesogen group.

Abstract: The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor, which is an organic compound containing at least one of nitrogen or sulfur having a lone pair of electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.

Abstract: An electro-luminescent conversion light emitting device for use in an information communication field. The light emitting device includes a semi-transparent reflective film substrate. On the semi-transparent reflective film is formed a transparent conductive film. On the transparent conductive film is formed a light emitting layer of organic thin film on the transparent conductive film. On the light emitting layer is formed an electrode. The semi-transparent reflective film 2 transmits parts of the light emitted by the light emitting layer to the glass substrate and reflects parts of the light to the light emitting layer. The semi-transparent reflective film acts as a light resonator with the Ag-Mg metal electrode on back of the light emitting layer.

Abstract: In order to diagnose non-distructively the deterioration degree of such as insulation oil and insulation paper during operation of an oil filled electrical machine and apparatus without stopping the operation thereof, a deterioration degree disgnosis method for the oil filled electrical machine and apparatus makes use of optical fibers (6, 7) and oil immersed probe (5) and diagnoses the deterioration degree of an insulation paper non-distructively based on reflection absorbance difference between those for any two wavelengths of the insulation paper.

Abstract: According to the present invention, there is provided a non-linear optical device comprising a non-linear optical medium comprising an organic compound, which remarkably improves the non-linear optical properties. The non-linear optical device according to the present invention is suited for the second and third harmonic generations, photomixing optical parametric oscillations, optical switches and optical bistable devices.

Abstract: In a semiconductor laser wavelength conversion device comprising a semiconductor laser beam souce, a lens, a single crystal of a non-linear optical material and a filter, the non-linear optical material is represented by the general formula, A--(Cx)--B, where (Cx) is --(CH)--or --CH.dbd.CH--C(.dbd.CH)--, A and B are each atomic group comprising a .pi.-electron conjugated structure containing at least one electron withdrawing group or one electron donating group. The device can generate a second harmonic wave having an intensity of 4 or more stronger than that of urea and having a cutoff wavelength of 420 nm or less.