Apparatus and filter array used in system for generating spectroscopic image, system for generating spectroscopic image, and method for manufacturing filter array

• Main Authors: ISHIKAWA ATSUSHI, YAKO MOTOKI
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2024
• Subjects: COLORIMETRY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; RADIATION PYROMETRY; TESTING

A device used in a system for generating a spectral image corresponding to each of four or more wavebands is provided with: a plurality of filters having different spectral transmittances from each other; and an image sensor that detects light passing through the plurality of filters, and that outputs i-th mask data by detecting only light corresponding to an i-th wave band among the four or more wave bands when the N wave bands are numbered in the order from short to long or in the order from long to short of central wavelengths, and that outputs the i-th mask data by detecting only light corresponding to the i-th wave band among the four or more wave bands, when the N wave bands are numbered in the order from short to long or in the order from long to short of central wavelengths. And a detection unit that outputs j-th mask data by detecting only light corresponding to a j-th wave band, in which when i-j is 1, the correlation coefficient between the i-th mask data and the j-th mask data is 0.8 or more, and