US 2023/0375465 A1 · TABLET SPECTROSCOPIC MEASUREMENT METHOD

Abstract

Provided is a high-speed and high-accuracy tablet spectroscopic measurement technology that enables total inspection. A pulsed light irradiation system irradiates a tablet being linearly moved by a movement mechanism with pulsed light in which an elapsed time in each pulse and a wavelength correspond to each other on a one-to-one basis, the output from a light receiver that has received transmission light from the tablet is input to a calculation means via an AD converter and an FPGA as an integration means, and a spectral transmission spectrum is calculated. In a case where the variation in spectral characteristic is measured, grouping is performed for multiple times of pulsed light irradiation performed on different locations, integration is separately performed, spectral transmission spectra are calculated and then compared.

Claims18

Dependent claims

A tablet spectroscopic measurement method for measuring a spectral transmission spectrum of a tablet, the method comprising:

an irradiation step of irradiating the tablet with pulsed light in which an elapsed time in each pulse and a wavelength correspond to each other on a one-to-one basis;
and
a calculation processing step of performing calculation processing on an output from a light receiver that receives transmission light from the tablet irradiated with the pulsed light in the irradiation step, and obtaining the spectral transmission spectrum of the tablet,
wherein a size of a beam of the pulsed light in the irradiation step on a light incident surface of the tablet is smaller than the size of the light incident surface of the tablet.

1 more element

A tablet spectroscopic measurement apparatus that measures a spectral transmission spectrum of a tablet, the apparatus comprising:

a pulsed light irradiation system that includes a pulsed light source emitting pulsed light in which an elapsed time in each pulse and a wavelength correspond to each other on a one-to-one basis, and irradiates the tablet with the pulsed light;
a light receiver that is disposed at a position receiving transmission light from the tablet which is irradiated with the pulsed light by the pulsed light irradiation system;
and
a calculation means that performs calculation processing on an output from the light receiver, and obtains the spectral transmission spectrum of the tablet,
wherein a size of a beam of the pulsed light radiated by the pulsed light irradiation system on a light incident surface of the tablet is smaller than the size of the light incident surface of the tablet.

2 more elements

Dependencies are inferred from the claim text.

Tablet spectroscopic measurement method

Life of this patent

Tablet spectroscopic measurement method

Life of this patent

Abstract

Claims18