Microspectroscope including optical fibers and spectroscope

Patent metadata

Field	Value
Publication number	US-9891105-B2
Application number	US-201615209843-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Aug 31, 2015
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A microspectroscope includes: a light source; a plurality of light projecting optical fibers that receive light from the light source; a spectroscope; a plurality of light receiving optical fibers for guiding received light to the spectroscope; and a confocal optical system for causing each of a plurality of beams from the plurality of light projecting optical fibers to be condensed and irradiated onto a sample, and forming images of a plurality of beams from a plurality of condensing points on the sample, respectively on the plurality of light receiving optical fibers.

First claim

What is claimed is:

1. A microspectroscope, comprising:
a plurality of light sources;
a plurality of light projecting optical fibers that receive light from the plurality of light sources;
a spectroscope;
a plurality of light receiving optical fibers for guiding received light to the spectroscope; and
a confocal optical system for causing each of a plurality of beams from the plurality of light projecting optical fibers to be condensed and irradiated onto a sample, and forming images of a plurality of beams from a plurality of condensing points on the sample, respectively on the plurality of light receiving optical fibers, wherein
the plurality of light projecting optical fibers receive light from the plurality of light sources,
each of the light sources of the plurality of light sources irradiates light onto one or a plurality of corresponding light projecting optical fibers, which are part of the plurality of light projecting optical fibers, and
optical paths of light from the plurality of light sources are regulated such that light that is received by each light projecting optical fiber is light from only one corresponding light source of the plurality of light sources.

2. The microspectroscope according to claim 1 ,
wherein the plurality of light projecting optical fibers and the plurality of light receiving optical fibers are individually two-dimensionally arranged, and
at least either the plurality of light projecting optical fibers or the plurality of light receiving optical fibers are arranged closer to each other than in a state in which the optical fibers are arranged in contact with each other in a square lattice, in a cross-section cut along a plane that is orthogonal to an extending direction of the optical fibers.

3. The microspectroscope according to claim 1 ,
wherein the microspectroscope further comprises:
a light projecting marker optical fiber that is fixed along the plurality of light projecting optical fibers and that receives light from another light source that either is at least one of the plurality of light source or is different from the plurality of light sources, on an input end side of the light projecting optical fibers; and
a light receiving marker optical fiber that is fixed along the plurality of light receiving optical fibers and that receives light from a further light source that is different from the plurality of light sources, on an output end side of the light receiving optical fibers, and

the confocal optical system causes each of a marker beam from the light projecting marker optical fiber and a marker beam from the light receiving marker optical fiber to be condensed and irradiated onto a sample.

4. The microspectroscope according to claim 3 ,
wherein the microspectroscope further comprises:
a light projecting marker light source; and
a light receiving marker light source;

the light projecting marker optical fiber receives light from the light projecting marker light source, on an input end side of the light projecting optical fibers, the light receiving marker optical fiber receives light from the light receiving marker light source, on an output end side of the light receiving optical fibers, and
the light projecting marker light source and the light receiving marker light source output light having mutually different colors.

5. The microspectroscope according to claim 1 , wherein an outer diameter of a core of each of the light receiving optical fibers is larger than an outer diameter of a 10 core of each of the light projecting optical fibers.

6. A microspectroscope, comprising:
a plurality of light sources;
a spectroscope;
a plurality of light receiving optical fibers that are two-dimensionally arranged, for guiding received light to the spectroscope; and
a confocal optical system for causing each of a plurality of beams formed by light from the plurality of light sources to be condensed and irradiated onto a sample, and forming images respectively on the plurality of light receiving optical fibers, wherein the images are images of a plurality of beams from a plurality of condensing points on the sample,
wherein the plurality of light receiving optical fibers are two-dimensionally arranged, and are arranged closer to each other than in a state in which the optical fibers are arranged in contact with each other in a square lattice, in a cross-section cut along a plane that is orthogonal to an extending direction of the optical fibers,
the microspectroscope further comprises a plurality of light receiving marker optical fibers that are fixed along the plurality of light receiving optical fibers and that receive light from another light source that either is at least one of the plurality of light sources or is different from the plurality of light sources, on an output end side of the light receiving optical fibers,
the confocal optical system causes each of a plurality of marker beams from the plurality of light receiving marker optical fibers to be condensed and irradiated onto the sample,
the confocal optical system includes a pinhole plate which is provided with projecting light generating holes and which receive light from the plurality of light sources,
each of the plurality of light sources irradiates light onto one or a plurality of corresponding projecting light generating holes, which are part of the plurality of projecting light generating holes of the pinhole plate, and
optical paths of light from the plurality of light sources are regulated such that light that is received by each light generating hole is light from only one corresponding light source of the plurality of light sources.

Assignees

• Otsuka Denshi Kk

Inventors

• Shiraiwa Hisashi

Classifications

• G02B21/004

  fixed arrays, e.g. switchable aperture arrays · CPC title

• G01J3/4406

  Fluorescence spectrometry · CPC title

• G01N21/65

  Raman scattering · CPC title

• G01J3/2803

  using photoelectric array detector · CPC title

• G01N2201/0833

  Fibre array at detector, resolving · CPC title