Abstract: A cell observation container includes a first container configured to accommodate a culture solution, and a second container having one or more wells that are able to be put in and taken out of the first container while retaining one or both of cells and cell masses cultured in the culture solution. One or more wells each include a bottom portion that is able to retain the culture solution, and a side wall that extends from a peripheral portion of the bottom portion. A liquid passage portion through which the culture solution accommodated in the first container is able to pass is provided in the side wall.

Abstract: A fine particle measurement device includes a support stand (20) that has a groove (F) extending in a predetermined direction and is configured to support in the groove an observation container (10), which has an elongate shape and accommodates a liquid sample containing a fine particle therein such that an extending direction of the groove (F) coincides with a longitudinal direction of the observation container (10); and an imaging unit (40) that is configured to capture an image of the fine particle in the observation container (10) at a position where the support stand is out of a field of view, the observation container (10) being supported by the support stand (20).

Abstract: An observation container (10) includes: a bottom portion that includes a bottom wall (12A) (first plate part) and a bottom wall (12B) (second plate part) which intersect each other and that is configured to accommodate a liquid sample O as a sample containing microparticles to be imaged by imaging units (30A) and (30B) serving as an imaging device; and a region that has transparency with respect to a wavelength of light used for observation of the microparticles.

Abstract: A method for quality evaluation includes emitting measurement light having a wavelength of 300 nm or more and 2,000 nm or less to a cell mass and acquiring a plurality of light intensity information corresponding to each of a plurality of measuring positions in the cell mass, generating a feature amount from a variation of the acquired plurality of light intensity information, and evaluating quality of the cell mass using the generated feature amount as an index.

Abstract: A quality evaluation method includes, acquiring light intensity distribution information related to a distribution of absorbance with respect to the measurement light in the cell mass by irradiating a cell mass with measurement light including near-infrared light; and evaluating a quality of the cell mass based on the information. A quality evaluation device includes a light source that irradiates a cell mass with measurement light including near-infrared light; a light receiving unit that, by receiving transmitted light or diffusely reflected light from the cell mass, acquires light intensity distribution information related to a distribution of absorbance with respect to the measurement light in the cell mass, the transmitted light or the diffusely reflected light being emitted from the cell mass by irradiating the cell mass with the measurement light; and an analyzing unit that evaluates a quality of the cell mass based on the information.

Abstract: A fine particle measurement device includes a support stand (20) that has a groove (F) extending in a predetermined direction and is configured to support in the groove an observation container (10), which has an elongate shape and accommodates a liquid sample containing a fine particle therein such that an extending direction of the groove (F) coincides with a longitudinal direction of the observation container (10); and an imaging unit (40) that is configured to capture an image of the fine particle in the observation container (10) at a position where the support stand is out of a field of view, the observation container (10) being supported by the support stand (20).

Abstract: An observation container (10) includes: a bottom portion that includes a bottom wall (12A) (first plate part) and a bottom wall (12B) (second plate part) which intersect each other and that is configured to accommodate a liquid sample O as a sample containing microparticles to be imaged by imaging units (30A) and (30B) serving as an imaging device; and a region that has transparency with respect to a wavelength of light used for observation of the microparticles.

Abstract: A quality evaluation method includes, acquiring light intensity distribution information related to a distribution of absorbance with respect to the measurement light in the cell mass by irradiating a cell mass with measurement light including near-infrared light; and evaluating a quality of the cell mass based on the information. A quality evaluation device includes a light source that irradiates a cell mass with measurement light including near-infrared light; a light receiving unit that, by receiving transmitted light or diffusely reflected light from the cell mass, acquires light intensity distribution information related to a distribution of absorbance with respect to the measurement light in the cell mass, the transmitted light or the diffusely reflected light being emitted from the cell mass by irradiating the cell mass with the measurement light; and an analyzing unit that evaluates a quality of the cell mass based on the information.

Abstract: Provided is a microscope device which includes: (1) a light source that outputs illumination light in a wavelength band including a near-infrared region; (2) an illumination optical system that irradiates an observation target with the illumination light output from the light source; (3) an image formation optical system that includes a spectroscopic unit which is configured to receive and disperse transmitted or scattered light produced at the observation target by irradiating the observation target with the illumination light, and that forms an image on the basis of the dispersed transmitted or scattered light; and (4) an image capturing unit that acquires the image formed by the image formation optical system. An illumination-light-irradiated area of the observation target is larger than an area of the field of view of the image formation optical system, and is less than or equal to ten times the area of the field of view.

Abstract: A quality evaluation method includes an acquisition step of acquiring spectral data related to transmitted light or diffusely reflected light from a cell mass by irradiating the cell mass with measurement light including near-infrared light, and an evaluation step of evaluating quality of the cell mass, based on the spectral data of the cell mass acquired in the acquisition step.

Abstract: A microscope that makes it possible to acquire a hyperspectral image with high data precision includes a light source, an illumination optical system, an image-forming optical system, an imaging unit, a spectroscope, a stage, a drive unit, and a control unit. The illumination optical system converges, at a converging angle ?, illuminating light in a wavelength band included in the near-infrared region output from the light source, and emits the converged illuminating light onto the object being observed. The image-forming optical system forms an image based on transmitted and scattered light generated by the observed object by emission of the illuminating light onto the observed object. The sin ? is set to a value that does not exceed the numerical aperture of an objective lens that receives the transmitted and scattered light from the observed object.