Jasco Corporation

Hisashi Masago

Satoko Suzuki

Yoshiro Kondo

Tomoyuki Fukazawa

Taiji Oyama

Masayuki Watanabe

Akio Wada

Koshi Nagamori

Mutsumi Senuma

Atsushi Yamada

Yuji Fujisawa

Katsuji Hasegawa

Takahiko Takenouchi

Takashi Yamanishi

Yasuo Horiguchi

A spectral analysis method for thermodynamically analyzing performs multivariate analysis to a plurality of measurement spectra measured under a plurality of measurement parameters, using MCR method that separates a pure spectrum from the plurality of measurement spectra, and calculates a concentration value of each pure spectrum. In this method, an equilibrium model corresponding to an equilibrium state of a sample in which three or more types of chemical species coexist is set, and at least one chemical-equilibrium equation corresponding to the equilibrium model is set. In the MCR method, a concentration curve based on the chemical-equilibrium equation is fitted to the calculated concentration values, an optimal value of a thermodynamic parameter is acquired, a new concentration value is acquired from the chemical-equilibrium equation based on the optimal value, and thus the concentration value is constrained.

Spectral analysis method, analysis apparatus and analysis program

Based on an HT voltage value of each data point applied to a light detector and a plurality of reference spectra measured, in measurement of a reference substance performed for a plurality of times, a weighting function deriver of a spectrum measuring device derives a relation between the HT voltage value (HTi) and a degree of dispersion σi of a plurality of spectral values as a weighting function (σ=f(HT)). Moreover, a numerical evaluator of the spectrum measuring device is configured to calculate a degree of individual coincidence between a sample spectrum and the reference spectrum, acquire the degree of dispersion σi by applying the HT voltage value at measuring the sample spectrum to the weighting function as a weighting value, and evaluate the difference between the reference spectrum and the sample spectrum based on the degree of individual coincidence to which the weighting value is applied.

Spectrum measuring device suitable for evaluating difference between spectra

An optical rotating power measurement method comprising: an optical rotating power data acquisition step of starting measurement of the optical rotating power of the sample in a measurement apparatus during a temperature changing process where a controller controls the temperature of the sample such that the temperature reaches the predetermined temperature and of obtaining temperature data and optical rotating power data of the sample as time passes during the temperature changing process; and a data processing step of obtaining a straight line relationship data between the temperature data and the optical rotating power data, by using the fact that the optical rotating power of the sample is proportional to a measurement temperature; wherein the optical rotating power data of the sample at the predetermined temperature or the temperature dependence data of the optical rotating power of the sample is determined based on the straight line relationship data.

Optical rotating power measurement method and optical rotating power measurement apparatus

A polarizing monochromator comprising a uniaxial birefringent crystal prism, the prism has the geometry of a triangular block having a triangular base, a face including a side of the hypotenuse is an input-output face, where light enters and exits, and a face including the longer side of the right angle is a reflection face, the optic axis of the prism is perpendicular to the base of the prism, the angle of the input-output face of the prism with respect to light coming from a collimator optical system is determined in such a manner that ordinary light and extraordinary light exit from the input-output face of the prism in opposite directions with respect to an optical axis connecting the collimator optical system and the prism, and a light-collecting optical system is disposed to collect either extraordinary light or ordinary light exiting from the input-output face of the prism.

Polarizing monochromator

A depth measuring apparatus is disclosed that comprises a mover for moving in an optical axis direction an objective lens for condensing a parallel light beam from a light emitter onto a measurement spot of a sample and converting light from the measurement spot to a parallel light beam, image forming lens for projecting light from the measurement spot obtained via the objective lens, aperture for passing only light from the focal point position of the objective lens, a surface scattered light information acquirer for detecting, while the objective lens is being moved, the amount of light passing through the aperture and having an excitation wavelength of the test subject, a fluorescence information acquirer for detecting, while the objective lens is being moved, the amount of light passing through the aperture and having a fluorescence wavelength of the subject, and a distance information acquirer for obtaining distance information between a position of the objective lens where the detection value of surface scattered light by means of the surface scattered light information acquirer is maximum and a position of the objective lens where the detection value of fluorescence by means of the fluorescence information acquirer is maximum, wherein the depth of the test subject within the sample is obtained based on the acquired distance information with a position on a surface of the sample as a reference.

Depth measuring apparatus

Growing community of inventors

Hachioji, Japan

Hisashi Masago