LIGHT MEASURING APPARATUS, LIGHT MEASURING METHOD, FILTER MEMBER, AND LIGHT-INDUCED FLUORESCENT MEASURING DEVICE

摘要

A laser light source for emitting excitation light, a sample case, a photomultiplier tube, a fluorescence collecting optical system and so forth are embedded in a resin material that is transparent to the excitation light and the light including fluorescence emitted from a sample. The resin material is provided in at least part of a light path that guides the fluorescence in the fluorescence collecting optical system, and this resin forms a housing that holds the laser light source, the fluorescence collecting optical system, the photomultiplier and so forth. A pigment having wavelength characteristics for absorbing the excitation light, Raman light generated from the resin, and so forth is contained substantially in a uniform manner in a resin region that surrounds the light path through which the excitation light and the light including the fluorescence pass.

主权项

1. A light-induced fluorescence measuring device comprising:
a solid light source; a sample holding member configured to hold a sample; a fluorescence measuring unit configured to detect fluorescence emitted from the sample held by the sample holding member; and a fluorescence collecting optical system configured to collect the fluorescence emitted from the sample and optically guide the fluorescence to the fluorescence measuring unit; the sample holding member being permeable to light emitted from the solid light source and the fluorescence radiated from the sample, the light emitted from the solid light source being excitation light, the solid light source, the sample holding member, the fluorescence measuring unit, and the fluorescence collecting optical system being embedded in a first resin material, the first resin material being permeable to the excitation light emitted from the solid light source and light including the fluorescence radiated from the sample, at least part of an optical path of the fluorescence collecting optical system for optically guiding the fluorescence being filled with the first resin material, and the first resin material forming a housing for holding the sample holding member, the fluorescence measuring unit and the fluorescence collecting optical system, that part of the first resin material, which surrounds the optical path for the excitation light and the light including the fluorescence radiated from the sample, containing a pigment that has a wavelength characteristic to absorb the excitation light, intrinsic fluorescence generated upon irradiating the sample holding member with the excitation light, and Raman light generated from the first resin material when the excitation light proceeds in the first resin material, and an amount of the pigment to be contained being set to a value that completely absorbs light, which is generated in a space including the optical path for the excitation light and the light including the fluorescence radiated from the sample and which proceeds out of the optical path.