Nippon Kogaku K.k.

Sumitomo Bakelite Company Limited

Mikio Ito

Sumiya Miyake

Noriyoshi Hashimoto

Kikuo Tamura

Akihiko Tobisawa

Minoru Okuda

Kazuhiko Shibata

Laminate comprising a flame-retardant resin composition

Flame-retardant resin composition and semiconductor sealant using the same

A flame-retardant resin composition which comprises (A) 100 parts by weight of an unhalogenated epoxy resin having at least two epoxy groups in one molecule, (B) 20 to 205 parts by weight of a maleimide compound having at least one maleimido group in one molecule, (C) 20 to 65 parts by weight of a curing agent having an amino group and (D) a phosphorus compound in a proportion of 0.5 to 4.5 parts by weight in terms of phosphorus element per 100 parts by weight of a total of the components (A), (B) and (C), provided that the proportion of nitrogen element contained in the composition is 2.0 to 10.0 parts by weight per 100 parts by weight of the total composition. The above flame-retardant resin composition has a high flame retardance without adding a halogen compound and does not deteriorate the characteristics of commercial products.

Flame retardant resin composition and laminate using the same

This specification discloses a dark current correcting device in a spectrophotometer utilizing, as the photoelectric converting element, an image sensor capable of electrical scanning such as a photo-diode array to improve the scanning speed and the reliability, thus eliminating the error component by the dark current from the photoelectric conversion signal obtained from each photoelectric converting element of the image sensor and enabling obtainment of a true photoelectric conversion signal.

Spectrophotometer capable of correcting a dark current

This specification discloses a spectrophotometer utilizing, as the photoelectrical converting element, an image sensor capable of electrical scanning such as a photo-diode array, thus adjusting the integration time thereof, namely, the scanning time of the image sensor and enhancing the S/N (signal-to-noise ratio).

Spectrophotometer receiving a variable quantity of light

A spectrophotometer has an image sensor capable of electrically scanning, such as a photo-diode array, as a photoelectrical converting element. A photoelectrical conversion signal is obtained corresponding to an arbitrarily selected wavelength from the signal time-sequentially produced from a one-dimensional image sensor by means of such a simple structure.

Spectrophotometer

This specification discloses a refractometer of the type in which a sample is introduced onto a prism by a pump device, whereafter the sample is illuminated so that the critical angle of the total reflection determined by the refractive indices of the sample and the prism is measured. The refractometer comprises a substantially rectangular parallelopiped frame member, a cylinder provided within the frame member and having a piston slidably disposed at the upper end thereof, an observation lens barrel disposed laterally within the frame member and in juxtaposed relationship with the cylinder, prism holding means, and reflector means for directing a light beam emergent from the prism to the observation lens barrel.

Growing community of inventors

Yokohama, Japan

Mikio Ito