JPS5973741A - Spectrophotometer - Google Patents

Abstract

PURPOSE:To obtain a spectrophotometer, which is best suited for measuring many channels and many wavelengths, by selecting white light beams from one of a plurality of optical fibers or a plurality of optical fibers, whose light beams are converged at one point, in correspondence with a reflecting mirror and a slit that can be moved, receiving a single color light beam having a different wavelength by one light receiving element sequentially by the movement of the slit or the rotation of a diffraction grating, and arranging a plurality of light receiving elements. CONSTITUTION:When light beams including many wavelengths, e.g., white light beams, are emitted from an optical fiber group 1, the white light beams are reflected by a reflecing mirror 2 in the direction of (x). Of the white light beams from optical fibers 1a, 1b, and 1c, only the white light beam from one optical fiber, e.g., the optical fiber 1a, is made to pass a slit 3. The white light beam, which has passed the slit 3, enters a diffraction grating 4. The light beam is divided into single color light beams having specified wavelengths by a scattering element, which is not shown. Each single color light beam enters each light receiving element 5a, which is arranged in an array shape. Thus, the spectrum measurement of multiple wavelengths can be performed with respect to a sample, which is arranged at the front stage of the optical fiber 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention belongs to the technical field of medical devices for diagnosis, and more particularly, spectrophotometer II? This invention relates to a multi-channel, multi-wavelength spectrophotometer.

[Technical background of the invention and its problems]

In an automatic chemical analyzer, for example, an automatic biochemical analyzer, diagnosis is performed by reacting the serum of a subject with a reagent and analyzing the reaction using a spectrometer.

In recent years, as the number of patients has increased, there has been a strong demand for multi-channel and multi-wavelength spectroscopic measurements. On this occasion,
It is difficult to switch between multiple light sources when measuring each channel, and until now there has been no spectrophotometer that is optimal for multi-channel, multi-wavelength measurements.

[Purpose of the invention]

The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a spectrophotometer that is optimal for multi-channel, multi-wavelength measurements.

[Summary of the Invention] The outline of the present invention for achieving the above object is that six axes that intersect at one point are arranged as a first... Second. a plurality of original fibers whose optical axes are arranged along the direction of the sixth coordinate axis;
a reflecting mirror which is movable along the coordinate axis and which reflects the light from the original fiber in the direction of the first coordinate axis; A slit is provided movably along the coordinate axis, and a source incident through the slit is split into monochromatic light, and a third
The first . The spectrophotometer is characterized in that it has a plurality of light receiving elements arranged on a plane t'L formed by the second coordinate axis.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of spectrophotometric machining, which is a first embodiment of the present invention. In the following explanation, the first . Second. The sixth coordinate axis is the orthogonal coordinate axis” *
3' t z Let me explain. In FIG. 1, reference numeral 1 denotes an original fiber group, which is constructed by arranging original fibers Ia, 1b, and IC along the y direction, for example, with the optical axis as the X axis. The original fibers 1a, 1b, and 1C guide the white light that has passed through the sample. Reference numeral 2 denotes a reflecting mirror, which receives the light from the original fiber group 1 and reflects this n in the X direction. Fj is arranged so as to reflect. 6
is a slit, which is disposed so as to face the y-z plane in the middle of the reflection path of the light from the reflecting mirror 2, and is movable along the y direction. Reference numeral 4 denotes a diffraction grating, which separates the light incident through the slit 3 into spectra. Reference numeral 5 denotes a detector, which is constructed by arranging, for example, a light receiving element 5α1 in an array along the f direction.

The effect of the spectral luminosity a1 configured as described above will be explained. When a source, for example, white light, containing more wavelengths than the source fiber group 1 is emitted, the reflection mirror 1 that enters the source 1t.
j: White light is reflected in the X direction. The white light from each optical fiber 1α, Ih, 1(?) passes only the white light from one source fiber, for example, the source fiber 1α, at the slit 6.The white light that has passed through the slit 6 enters the diffraction grating 4. , are separated into monochromatic lights of specific wavelengths by a dispersion element (not shown).These monochromatic lights are incident on each of the light receiving elements 5a arranged in an array. It is possible to perform measurements at multiple wavelengths on a sample placed in front of the optical fiber 1a.Next, the slit 5'ff:' is moved in the direction of the original fiber 1a. The white light from the optical fiber 1h is passed through instead of the white light.The white light from the original fiber 1h is also split into each Qj color light by the diffraction grating 4 in the same manner as described above. By extracting the light with each light receiving element 5α, it is possible to measure multiple wavelengths (Y) with respect to the sample F) arranged at the front stage of the optical fiber 1h. If you move the white light f and 2 of the optical fiber 1C to 1 element,
Multi-wavelength spectroscopic measurements can be performed on a sample placed in the front stage. In this way, the transmitted light of different samples is filtered through the fiber group 1, and this is connected to the slit 6.
Select the 1000th order and pass it by 717
For example, multi-channel, multi-wavelength spectroscopic measurements can be performed.

Next, a second embodiment of the present invention will be described with reference to Fig. En 2. The spectrophotometer shown in Fig. 2 is different from the spectrophotometer shown in Fig. 1. Original fiber cup f with the Z-axis as the optical axis.
: The reflective mirrors 2 are arranged along the x direction, the reflective mirrors 2 are movable in the tx direction, and the slits 6 are fixed and the diffraction gratings 4 are rotatable.

With the above configuration, any source fiber can be selected depending on the set position of the reflection mirror 2 in the X direction. Furthermore, even if the setting position of the reflecting mirror 2 is slightly different in the X direction, the white light that is differentiated by the diffraction grating 4 will only be shifted in two directions, which will affect the wavelength accuracy of each monochromatic light. do not have.

White light from an arbitrary optical fiber can be sequentially detected as monochromatic light of sufficient wavelength by the diffraction grating 4 which rotates about zIIIllI as a rotation axis on the negative light receiving element 5α of the emulator 5. Incidentally, when detecting with each receiving element 5α arranged in an array of the detector 5 as in FIG. 1, multi-wavelength spectroscopic measurement is possible without rotating the diffraction grating 4 all the way.

Next, a sixth embodiment of the present invention will be described with reference to FIG. The difference between the spectrophotometer shown in FIG. 6 and the spectrophotometer shown in FIG. 1 is that the original fiber group 1 is arranged in the X direction.
The optical axis of the mirror 2 is arranged so that it is focused on a single point on the fixed reflecting mirror 2, and the light-receiving elements 5a of the light receiving device 5 are arranged in two axial directions.

With such a configuration, the white light t from the optical fiber group 1 is transmitted through the slit 3 to z at the diffraction grating 4.
11'+lI-Jm, there are only a few different IL spectroscopy n.
Immediate color source after 1 minute of light is distributed along z@l++c
In this way, the white light of the original fiber group 1 that is focused on a single point on the reflecting mirror 2 is enhanced. ) Y, the receiver C can be inserted into the element 5α.

Next, a fourth embodiment of the present invention will be described and explained with reference to a 2n4 motor. The fourth embodiment t is a combination of embodiments not shown in FIGS. 1 and 2. As shown in Figure 4,
The original fiber group 1 with 11 as z't'llll
, are arranged vertically on the y plane, and by moving the reflecting mirror 2 in the X direction, select the X row of the optical fiber group 1 and move it in the 3'e3' direction. Therefore, FiiJ-based fiber r+'f' y out of 1
This allows you to select external sounds. With such a configuration, white light from an arbitrary optical fiber of the original fiber group 1 arranged vertically and horizontally in the x, y plane is selected, and the white light is separated into multiple wavelengths by the total diffraction grating 4. By doing so, multi-channel, multi-wavelength spectroscopic measurements can be performed.

Next, a fifth embodiment of the present invention will be described with reference to FIG. The fifth embodiment is a combination of the embodiments shown in FIGS. 1 and 3. As shown in FIG. 5, a group of optical fibers 1 arranged in the X direction are all arranged in multiple rows in the Y direction so that the optical axes of the optical fibers are focused on one point on the reflecting mirror 2 to form the original fiber group 1. Then, the white light emitted from the fiber group 1 is passed through each position in the X direction by moving the slit 3 in the X direction, and is focused at one point by entering the nf diffraction grating 4. White light from each optical fiber can be simultaneously split into monochromatic light of each wavelength. Therefore, by arranging the light receiving elements 5a vertically and horizontally on the x-z plane, multi-channel, multi-wavelength spectroscopy can be performed with full efficiency.

In the embodiments of Boxes 1 to 5 described above, the coordinate axes τv9 gz are orthogonal to each other for the sake of convenience. However, this J4≦mark tilt is not limited to orthogonal, but intersects each other at one point J41'': You can give it a try in Wandering 11.Also,
Diffraction gratings 4 and 49'! Output device 5
The same effect as described above can be obtained even if the optical path is movably arranged to intersect the optical path of the optical path.

[Guto, light effect]

As explained above, according to the present invention, the crotch position of the mirror 1, which is movable by living on the first reference axis, and the slit, which can move the weight by applying the glue 1 of the silk 2, is Depending on fN, one of the plurality of original fibers or white light from a plurality of optical fibers focused on one point is selected, and this light is reflected by moving the slit or rotating the diffraction grating. For the element, a cliff of l1lI′i different wavelengths “receives one color light” [5
I can even stir it. Therefore, by arranging a plurality of receiver yt elements, it is possible to provide the best spectral reduction for multi-channel, multi-wavelength fA+J legs.

[Brief explanation of drawings]

FIGS. 1 to 5 are schematic views showing an embodiment of the present invention; FIG. 1... Optical fiber group, 2... Reflection mirror,
6...Slit, 4...Diffraction grating, 5...
・Digger 5a... Light receiving element.

Claims (6)

[Claims] (1) The 6 axes that intersect one point are the 1st, 22nd and i3 coordinate axes, and the source axes are arranged along the direction of the 6th coordinate axis, allowing multiple source fibers to move along the first coordinate axis. a reflecting mirror for reflecting the light from the source fiber in the direction of the first coordinate axis; n
a slit, a diffraction grating that splits the light incident through the slit into monochromatic light and is rotatable about a third coordinate axis;
A molecule c photometer characterized by having a plurality of light receiving elements arranged on a surface formed by a second coordinate axis. (2) The optical fiber has the sixth coordinate axis as the optical axis and the second
2. The spectrophotometer according to claim 1, wherein a plurality of spectrophotometers are arranged along the coordinate axis. (3) The original fiber has the sixth coordinate axis as the original axis,
A spectrophotometer according to claim 1, characterized in that a plurality of spectrophotometers are arranged along the first J'B reference axis. (4) The nine fibers are arranged along the first coordinate axis so that each optical axis intersects one point of the mirror. Total. (5) The first Me optical fiber has the sixth coordinate axis as its original axis, and is arranged in plurality along the first coordinate axis and the second coordinate axis. Spectrophotometer. (6) The nil index fiber is characterized in that a bundle of original fibers arranged along the first coordinate axis so that the MS 11111 intersects with one point of the reflecting mirror is arranged in plural bundles along the second coordinate axis. A spectrophotometer according to claim 1.