JP2009047623A - Transmission measuring holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission measuring holder with excellent workability of a sample set. <P>SOLUTION: The transmission measuring holder 10 used when a sample 28 is optically transmission-measured, includes a holder body 12 for holding the sample 28; a sample presser foot 14 detachably attached to the holder body 12, for holding the sample 28 by the holder body 12 and itself under the condition that it is attached to the holder body 12; and a fixation unit 16 arranged at the holder body 12 or the sample presser foot 14, for removably detaching the sample presser foot 14 from the holder body 12 by magnetic force, in which the sample presser foot 14 is detached from the holder body 12 by the magnetic force and the sample presser foot 14 is made of a material which is not deformed when the sample presser foot 14 is detached from the holder body 12 and the sample 28 is held by the holder body 12 and the sample presser foot 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a transmission measurement holder, and more particularly to an improvement of a sample holding mechanism thereof.

Conventionally, in order to measure the molecular structure and state of a sample, infrared transmission measurement has been performed to know the characteristics of the sample by irradiating the sample with infrared rays and dispersing the transmitted light to obtain a spectrum.
In infrared transmission measurement, as a sample set, a tablet method is generally used in which a sample is ground together with an infrared transmitting agent such as potassium bromide (KBr) and shaped into a tablet. In the case of a liquid sample, the sample is applied to a window plate such as KBr, or a low-viscosity sample that cannot be applied is sandwiched between two window plates.
When the sample is in the form of a thin film, the pretreatment is not required and measurement can be performed as it is. However, for measuring the transmission of liquid or film, a holder for setting the liquid or film in the apparatus is required.
As a conventional holder, for example, there is a screw type in which KBr is sandwiched between metal plates and fastened with screws (see, for example, Patent Document 1 and Non-Patent Document 1).
Further, as a conventional holder, for example, there is a clip type in which KBr is sandwiched between metal plates and fixed with a clip using a spring (for example, see Patent Document 2 and Non-Patent Document 2).
JPA 3-16047 (Fig. 3) JP-A-7-128206 (FIG. 1) “FTIR TALK vol.9 Measuring method of liquid sample”, [online], Shimadzu Corporation, [Search April 4, 2007], Internet <URL: http://www.an.shimadzu.co.jp /support/lib/ftirtalk/talk9/intro.htm> “EZ-Clip Holder”, [online], ST Japan Co., Ltd. [Search April 4, 2007], Internet <URL: http://www.stjapan.co.jp/101_stjp/101_02_b/ index.html>

However, even in the conventional method, there is still room for improvement in the workability of the sample set.
That is, with the screw-type holder, it takes time to close the screw, and if it is tightened too much, there is a risk of damaging the window plate. In addition, since the tightening strength varies depending on the person, the measurement results also differ depending on the person.
The clip-type holder can be easily held by a spring. However, one hand is blocked to lift the clip when setting the window. In addition, since the pressing is in the way, it is necessary to perform sampling such as painting or pinching the sample on a window plate in another place and setting it on the holder, which is troublesome.
In any of the conventional methods, a small window plate or film can be measured by applying a mask. However, this mask is simply a plate with a hole, and the setting position of the window plate needs to be adjusted manually by hand while visually observing the setting position of the window plate.
As described above, although there is still room for improvement in the workability of the sample set even in the conventional method, there has been no appropriate technique that can solve this problem.
The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a transmission measurement holder excellent in workability of a sample set.

In order to achieve the above object, a transmission measurement holder according to the present invention is a transmission measurement holder used for light transmission measurement of a sample. The holder main body, a sample presser, a fixing means, and light transmission on the main body side A hole and a holding-side light passage hole, wherein the sample holder can be attached to and detached from the holder body by magnetic force, and the material of the sample holder is used when the sample holder is attached to and detached from the holder body and It is characterized in that it is made of a material that does not deform when the sample is held between the holder main body and the sample presser.
Here, the holder main body is for holding a sample.
The sample presser is detachably provided on the holder main body, and clamps the sample with the holder main body while being attached to the holder main body.
The fixing means is provided on the holder body or the sample holder, and the sample holder is detachably attached to the holder body by a magnetic force.
The main body side light passage hole is provided in the holder main body, and is used for light transmission measurement of a sample sandwiched between the holder main body and the sample presser.
The holding-side light passage hole is provided in the sample holder, and is used for light transmission measurement of the holder body and the sample sandwiched between the sample holders.

<Material of sample holder>
Examples of the material for the sample holder of the present invention include materials harder than rubber, such as metal.

<Sample set>
The sample setting includes the case where the sample is set as it is and the case where the sample is provided between the window plates.

<Recessed body>
In the present invention, it is preferable that the holder body includes a body recess for positioning and holding the sample so that the center axis of the sample is positioned on the center axis of the body side light passage hole. .
Here, the main body recess includes a recess peripheral wall. The concave peripheral wall is for defining a position in the direction perpendicular to the axis of the sample with respect to the holder body.

<Framework>
Moreover, in this invention, it is preferable to provide the framework for positioning and holding the sample which is provided in the said main body recessed part so that attachment or detachment and the sample positioned and hold | maintained at this main body recessed part differs in size.
The frame includes a frame inner peripheral wall and a frame outer peripheral wall. The inner peripheral wall of the frame and the outer peripheral wall of the frame are arranged such that the central axis of the sample positioned and held in the frame is positioned on the central axis of the light passage hole on the main body side in a state where the frame is fitted in the concave portion of the main body. Further, it is intended to define the position of the specimen in the direction perpendicular to the axis with respect to the holder body. The frame inner peripheral wall positions and holds the sample. The frame outer peripheral wall is fitted to the main body concave peripheral wall.

<Sample holder>
In the present invention, the sample presser is bent in a substantially Ω-shaped cross section so that a step determined based on the sample thickness is provided between the sample presser end portion and the sample press intermediate portion. Is preferred.
And in this invention, the said sample holder is installed in the said holder main body in the direction of the cross-sectional reverse ohm character, and the said sample is clamped by this holder main body and this sample holder intermediate part. Alternatively, the sample holder is placed in the Ω-shaped cross section, the sample holder end is installed on the holder body, and the sample is held between the holder body and the sample holder intermediate part.

<Packing>
In the present invention, it is preferable that the sample presser includes a ring-shaped packing for pressing the sample toward the holder body.
Here, the packing is provided on the sample holder so that the packing central axis is positioned on the central axis of the pressing side light passage hole, and has a packing thickness determined based on the sample thickness.

  According to the transmission measurement holder of the present invention, the sample holder can be attached to and detached from the holder body by magnetic force, and the sample holder can be made of the sample holder when the sample holder is attached to and detached from the holder body and the holder body and the sample holder. Since it is made of a material that does not deform when pinching, the workability of the sample set is improved.

In the present invention, since the holder main body includes the main body recess, the sample can be positioned easily and accurately, so that the workability of the sample set is further improved.
In the present invention, by providing a detachable frame in the main body recess, it is possible to cope with various sample sizes, so that the workability of the sample set is further improved.
In the present invention, since the sample holder has a substantially Ω-shaped cross section, it can cope with various sample thicknesses, so that the workability of the sample set is further improved.
In the present invention, by providing the packing to the sample holder, it is possible to cope with various sample thicknesses, so that the workability of the sample set is further improved.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a transmission measurement holder according to an embodiment of the present invention.
1A is a view of the state in which the sample presser is removed from the holder body as viewed from obliquely above, and FIG. 1B is a view of the state in which the sample presser is attached to the holder body as viewed from obliquely above. (C) is a longitudinal cross-sectional view of a state in which a sample holder is attached to the holder body.
In the present embodiment, an example in which a liquid sample is assumed as a sample and the liquid sample is provided between window plates will be described.
The infrared transmission measurement holder (transmission measurement holder) 10 shown in FIG. 1 includes a holder main body 12, a sample holder 14, a magnet (fixing means) 16, a main body side light passage hole 18, and a pressure side light passage hole. 20 and a main body recess 22.
Here, the holder main body 12 holds the sample 28 in a state of being provided between the window plates 30.
The sample holder 14 is detachably provided on the holder main body 12. The sample holder 14 holds the sample 28 between the holder body 12 and the sample holder 14 while being attached to the holder body 12. The material of the sample holder 14 is a material that does not deform when the sample holder 14 is attached to and detached from the holder body 12 and when the sample 28 is clamped between the holder body 12 and the sample holder 14, for example, a magnetic metal.
The magnet 16 is provided on the holder main body 12, and makes the sample presser 14 detachable from the holder main body 12 by magnetic force.

The main body side light passage hole 18 is provided in the holder main body 12 and is used for making the measurement light incident on the sample 28 or transmitted light (measurement light) from the sample 28 obtained by making the measurement light incident on the sample 28. To pass through.
The presser side light passage hole 20 is provided in the sample presser 14 and allows the measurement light to enter the sample 28 or allows the transmitted light from the sample 28 obtained by entering the measurement light to pass through the sample 28 to pass therethrough. Shall be.
Then, the sample holder 14 is attached to the holder main body 12 so that the central axis of the pressing side light passage hole 20 is positioned on the central axis of the main body side light passage hole 18.

In the figure, a main body recess 22 into which a sample 28, a window plate 30, and a frame to be described later are fitted is provided at the upper part of the main body side light passage hole 18 of the holder main body 12. The main body recess 22 has a size larger than that of the main body side light passage hole 18.
The main body recess 22 is used for positioning and holding the sample 28 so that the central axis of the sample 28 is positioned on the central axis of the main body side light passage hole 18. The main body recess 22 includes a recess bottom wall 32 for defining the position of the sample 28 in the central axis direction with respect to the holder body 12 and a recess peripheral wall 34 for defining the position of the sample 28 in the axis orthogonal direction with respect to the holder body 12.

The infrared transmission measurement holder 10 according to the present embodiment is configured as described above, and the operation thereof will be described below.
In the present embodiment, since the sample presser 14 is detachably provided to the holder main body 12 by magnetic force, the sample presser 14 can be easily attached to and detached from the holder main body 12.
For this purpose, the sample holder 14 is completely removed from the holder body 12 when the sample is set.
Then, one window plate 30, the sample 28, and the other window plate 30 are sequentially provided in the main body recess 22 of the holder main body 12. Here, since the sample holder 14 is completely removed from the holder main body 12 when setting the sample, the window plate 30 and the sample 28 can be easily set on the holder main body 12 as compared with the clip type.
In addition, when the window plate 30 is provided in the main body concave portion 22 of the holder main body 12, the shape and size of the main body concave portion peripheral wall 34 are such that the main body concave portion peripheral wall 34 is fitted to the main body concave portion peripheral wall 34. It is determined according to the shape and dimensions. As a result, by simply setting the window plate 30 and the sample 28 in the main body recess 22 of the holder main body 12, the position of the sample 28 and the window plate 30 in the axis orthogonal direction relative to the holder main body 12 can be easily and accurately positioned.
Furthermore, when the window plate 30 is provided in the main body recess 22 of the holder main body 12, the sample 28 and the axis of the window plate 30 with respect to the holder main body 12 can be obtained simply by bringing the bottom wall of the window plate 30 into contact with the main body recess bottom wall 32. The directional position can be easily and accurately positioned.

In this way, when the sample 28 and the window plate 30 are positioned and held by the main body concave portion 22, the holder main body 12 is positioned so that the central axis of the pressing side light passage hole 20 is positioned on the central axis of the main body side light passage hole 18. A sample holder 14 is attached to the substrate.
At this time, since the sample holder 14 is firmly attached to the holder body 12 by the magnetic force of the magnet 16, the sample 28 is firmly held between the holder body 12 and the sample holder 14.
In addition, since the sample holder 14 can be fixed to the holder body 12 simply by placing the sample holder 14 on the holder body 12, the sample holder 14 can be fixed to the holder body 12 as compared with a clip type or a screw type. Can be easily performed.

After the sample setting as described above, the infrared transmission measurement holder 10 is set at a position on a predetermined optical path in the FTIR sample chamber, and the infrared transmission measurement of the sample 28 is performed.
Here, since the infrared transmission measuring holder 10 has the center axis of the sample 28 and the center axis of the holding side light passage hole 20 positioned with respect to the center axis of the main body side light passage hole 18, the FTIR sample The infrared transmission measuring holder 10 can be easily and accurately positioned on the FTIR only by aligning the central axis of the main body side light passage hole 18 with a predetermined optical path in the room.
Then, after the infrared transmission measurement is completed, the sample holder 14 can be easily detached from the holder body 12 simply by pulling the sample holder 14 away from the holder body 12, so that the measured sample 28 and window plate 30 can be easily removed. Can be taken out. Also in this case, since the sample presser 14 is completely removed from the holder main body 12, the window plate 30 and the sample 28 can be easily removed from the holder main body 12 as compared with the clip type.

By the way, conventionally, there are various means for fixing the sample holder to the holder body, such as a clip type and a screw type.
In this embodiment, in order to obtain both good holding of the sample and easy attachment / detachment of the sample holder with respect to the holder main body, the combination of the magnet fixed type and the material of the sample holder is very important. In this embodiment, the material of the sample holder is a material that does not deform, for example, a magnetic metal, when the sample holder is attached to and detached from the holder body and when the sample is held between the holder body and the sample holder.

Here, when the sample holder is configured to be detachably attached to the holder body by a magnetic force, it is usually considered that the sample holder is configured by a rubber magnet in order to easily attach and detach the sample holder.
However, if the sample press is made of a rubber magnet, the sample may not be held well.
That is, if the sample press is composed of a rubber magnet, it is considered that the sample press end is in close contact with the holder main body in a state where the sample press is attached to the holder main body. In this state, when removing the sample holder from the holder body, only slightly pull the sample holder end (after deformation) and then lift the entire sample holder to easily remove the sample holder from the holder body. be able to.
However, since the sample holder deforms when it is removed, if the sample holder remains deformed when the sample holder is attached to the holder body, it is difficult to hold the sample firmly between the holder body and the sample holder. There is.
In addition, if the sample holder is made of rubber magnet, the holder may be deformed so that the sample holder rises depending on the sample thickness even when the sample is firmly held between the holder body and the sample holder. It may be difficult to hold the sample firmly between the main body and the sample holder.

  Therefore, in the present embodiment, in order to ensure both compatibility of the ease of attaching and detaching the sample holder to the holder body and good holding of the sample, a magnetic type is adopted as the fixing mechanism, and the material of the sample holder is not deformed. For example, a magnetic metal is used. Only with such a meaningful combination, both good holding of the sample and easy attachment / detachment of the sample press with respect to the holder main body can be surely obtained.

Further Improvement of Workability of Sample Set In the present embodiment, it is very important to deal with various sample sizes in order to further improve the workability of the sample set. For this reason, it is also very preferable to set samples of various sample sizes in the main body recess through a framework corresponding to the sample size.
<Recessed body, frame>
Hereinafter, the main body recess 22 and the frame 24 that are characteristic in the present embodiment will be described more specifically with reference to FIG.
2A is an exploded view of the main portions of the main body recess 22 and the frame 24 as viewed from above, and FIG. 2B is an assembly view of the main portions of the main body recess 22 and the frame 24 as viewed from above. (C) is the longitudinal cross-sectional view of the principal part of the main-body recessed part 22 and the frame 24 shown to the same figure (B).

The holder body 12 includes a body recess 22 for positioning and holding the sample 28 so that the center axis of the sample 28 is positioned on the center axis of the body side light passage hole 18.
The body recess 22 includes a recess bottom wall 32 for defining the position of the sample 28 in the center axis direction relative to the holder body 12 and a recess peripheral wall 34 (34a to 34d) for defining the position of the sample 28 in the axis orthogonal direction relative to the holder body 12. )including.

In the present embodiment, a frame 24 is provided that is detachably provided in the main body recess 22 and that positions and holds a sample having a size different from that of the sample 28 positioned and held in the main body recess 22.
When the frame 24 is fitted in the main body recess 22, the sample 28 with respect to the holder main body 12 is positioned so that the central axis of the sample 28 positioned and held by the frame 24 is positioned on the central axis of the main body side light passage hole 18. Frame inner peripheral walls 36a to 36d and frame outer peripheral walls 38a to 38d for defining the position perpendicular to the axis. The frame 24 includes a frame side light passage hole 40 for performing infrared transmission measurement of the sample 28.
Further, the frame 24 defines the center axis direction position of the sample 28 positioned and held by the frame 24 with respect to the holder main body 12 in a state where the bottom of the frame 24 is in contact with the recess bottom wall 32 of the main body recess 22. A frame bottom wall 41 is included.

When the sample 28 and the window plate 30 are smaller than the size of the main body recess 22, the sample 28 and the window plate 30 are set in the main body recess 22 via the frame 24. That is, a frame 24 having frame inner peripheral walls 36 a to 36 d corresponding to the size of the sample 28 and the window plate 30 is prepared, and the frame outer peripheral walls 38 a to 38 d are fitted into the concave peripheral walls 34 a to 34 d of the main body recess 22. Thus, the frame 24 can be positioned with respect to the main body recess 22.
Next, the sample 28 can be set between the window plates 30 by providing one frame plate 30, the sample 28 and the other window plate 30 in the frame 24.
Here, since the outer peripheral walls 38a to 38d of the frame assembly 24 are fitted to the concave peripheral walls 34a to 34d of the main body concave portion 22, the axial orthogonal direction position of the sample 28 can be accurately and easily positioned with respect to the holder main body 22. Can do. Therefore, the frame outer peripheral walls 38a to 38d of the frame 24 have a frame outer peripheral wall shape and a frame outer peripheral wall size corresponding to the shapes and dimensions of the concave peripheral walls 34a to 34d of the main body concave portion 22.
Further, the position of the sample 28 in the central axis direction relative to the holder main body 12 can be positioned by bringing the bottom wall of the frame 24 into contact with the concave bottom wall 32 of the main body concave portion 22. Therefore, the frame 24 has a frame thickness corresponding to the depth of the main body recess 22.

  Thus, when the sample 28 is positioned by the main body recess 22 and the frame 24, the holder main body 12 is positioned so that the central axis of the pressing side light passage hole 20 is positioned on the central axis of the main body side light passage hole 18. A sample holder 14 is attached, and the sample setting is completed.

  In the present embodiment, by using the frame 24 corresponding to the size of the window plate 30, there is no need for alignment of the window plate 30, and the window plate 30 is placed in the frame 24 at an appropriate position. The window plate 30 can be set.

In the present embodiment, since the sample presser 14 can be fixed by the magnet 16, the sample 28 such as the window plate 30, a liquid or a film can be easily held.
In the present embodiment, by providing a frame 24 on which a small and disposable window plate 30 can be set, it is possible to perform measurement without the need for cleaning and the risk of contamination. This frame 24 can be replaced depending on the size of the window plate 30 to be used.
In this embodiment, the window plate 30 and the film sample of various sizes can be held by exchanging the presser 14.

  According to this embodiment, the time required for the pre-processing and setting until measurement is several seconds, and the use of a small disposable window plate 30 eliminates the need for cleaning, leading to a reduction in analysis time. Further, by replacing the frame 24, a small window plate (5 mm × 5 mm × 1 mm) or a 20 mm to 30 mm square that has been generally used can be held widely. If the small window plate 30 is used, the required sample 28 is also a very small amount (about 1 μl if it is liquid), and even a small amount of sample 28 can be measured.

According to this embodiment, since the sample presser 14 is detachably attached to the holder main body 12 with the magnet 16, the sample 28 can be easily fixed, and individual differences are unlikely to occur during measurement.
In the present embodiment, since the sample holder 14 for fixing the window plate 30 can be removed and the frame 24 for fixing the window plate 30 is provided, sampling can be performed in the main body recess 22 or the frame 24 and measured as it is.
In the present embodiment, by replacing the frame 24, various sizes and shapes of the window plate 30 can be set in addition to the small disposable window plate 30, and a plate-like sample such as a film or a silicon wafer can be easily used. It is possible to measure by holding.

<Sample holder>
In the present embodiment, it is very important to deal with various sample thicknesses in order to further improve the workability of the sample set. For this reason, in the present embodiment, it is also preferable to use a sample holder that is bent in a substantially Ω-shaped cross section so as to have a step corresponding to the thickness of the sample, instead of the plate-like one.
That is, in the present embodiment, as shown in FIG. 3A, the sample presser 14 has a step S defined based on the sample thickness between the sample press intermediate portion 42 and the sample press end portion 44. It is also preferable to use one that is bent in a substantially inverted Ω shape in cross section so as to be provided.
In the case where the sample 28 is a thin film sample, as shown in FIG. 5B, the sample holder 14 is placed in the direction of the inverted Ω-shaped cross section, the holder main body 12 and the outer surface 42a of the sample holder intermediate portion 42. Can be pinched.
When the sample 28 is a liquid sample, as shown in FIG. 5C, the sample holder 14 is installed in the holder main body 12 with the sample holder 14 in the direction of the Ω cross section, and the holder main body 12 and the sample. The sample 28 can be clamped through the window plate 30 with the inner side surface 42 b of the pressing intermediate portion 42.
In the present embodiment, the single sample holder 14 can cope with the samples 28 having different sample thicknesses, so that the workability of the sample set can be further improved.

In the present embodiment, by using the sample holder 14 bent in a substantially Ω-shaped cross section, the sample holder 14 can be attached and detached more easily than a flat plate-like one. The workability of the sample set can be further improved.
That is, when the sample holder 14 has a reverse Ω-shaped cross section as shown in FIG. 5B, the sample holder 14 can be easily attached to and detached from the holder body 12 by having the sample holder end 44. It can be carried out.
In addition, when the sample holder 14 has a Ω-shaped cross section as shown in FIG. 8C, the sample holder 14 can be easily attached to and detached from the holder body 12 by having the sample holder intermediate portion 42. be able to.

<Packing>
In this embodiment, it is very important to deal with various sample thicknesses. For this reason, in this embodiment, it is also preferable to provide the sample holder with a packing having a thickness corresponding to the sample thickness.
That is, in the present embodiment, it is also preferable to provide a ring-shaped packing 46 as shown in FIG.
In addition, the same figure (A) is the figure which looked at the sample holder 14 with which the packing 46 was provided from the holder main body 12 side. FIG. 2B is a longitudinal sectional view of a state in which the same sample holder 14 is attached to the holder body 12.
As shown in FIG. 6A, the packing 46 is provided on the sample holder 14 so that the packing central axis is positioned on the central axis of the pressing-side light passage hole 20.
The packing 46 has a packing thickness determined based on the sample thickness.
Further, since the packing 46 securely holds the sample 28 in the main body recess 22, the entire outer peripheral wall of the packing 46 needs to enter the main body recess 22. For this reason, the packing 46 has a packing outer peripheral wall dimension slightly smaller than the main body recess 22.
Furthermore, in order to prevent the packing 46 from interfering with infrared transmission measurement, the size of the inner wall of the packing is larger than the size of the pressing side light passage hole 20.
As a result, as shown in FIG. 5B, the packing 46 is attached to the holder body 12 by simply attaching the sample holder 14 provided with the packing 46 having a packing thickness corresponding to the sample thickness to the holder body 12. By pressing firmly toward the holder body 12, the sample 28 can be securely clamped via the window plate 30. Thereby, for example, even when the liquid sample 28 is held between the window plates 30, the liquid sample 28 can be held tightly between the window plates 30, so that the workability of the sample set is further improved. Can be achieved.

<Positioning mechanism>
In this embodiment, in order to further improve the workability of the sample set, it is very important to position the sample holder 14 in the axial direction with respect to the holder body 12 more easily and accurately.
For this purpose, in this embodiment, as shown in FIG. 4, positioning pins 48 and positioning holes 50 are provided in the holder main body 12 and the sample holder 14. The position of the positioning pin 48 and the positioning hole 50 in the direction perpendicular to the axis is obtained when the position of the sample holder 14 in the direction perpendicular to the axis with respect to the holder body 12 is positioned.
Thereby, in this embodiment, when attaching the sample presser 14 to the holder main body 12, the positioning of the sample presser 14 in the direction perpendicular to the axis with respect to the holder main body 12 can be easily performed only by passing the positioning hole 50 through the positioning pin 48. And it can be done accurately.

  In the above configuration, the example in which the transmission measurement holder is used for measurement in the infrared region has been described. However, the present invention is not limited to this, and can also be used for measurement in other regions.

It is explanatory drawing of schematic structure of the transmission measurement holder concerning one Embodiment of this invention. It is explanatory drawing of a suitable holder main body and frame in the holder for permeation | transmission measurement concerning one Embodiment of this invention. It is explanatory drawing of a suitable sample holder in the holder for permeation | transmission measurement concerning one Embodiment of this invention. It is explanatory drawing of a suitable packing and positioning mechanism in the holder for permeation | transmission measurement concerning one Embodiment of this invention.

Explanation of symbols

10 Infrared transmission measurement holder (Transmission measurement holder)
12 Holder body 14 Sample holder 16 Magnet (fixing means)
18 Body side light passage hole 20 Presser side light passage hole 22 Body recess 24 Frame

Claims (5)

In a transmission measurement holder used for light transmission measurement of a sample,
A holder body for holding the sample;
A sample holder that is detachably provided on the holder body, and holds the sample with the holder body in a state of being attached to the holder body;
A fixing means provided on the holder main body or the sample holder, and making the sample holder removable with respect to the holder main body by magnetic force;
A body-side light passage hole provided in the holder body for performing light transmission measurement of the sample sandwiched between the holder body and the sample holder;
A holding-side light passage hole provided in the sample holder for performing light transmission measurement of the holder body and the sample held between the sample holder;
The sample holder is detachable from the holder body by magnetic force,
The material of the presser is a material that does not deform when the sample presser is attached to and detached from the holder main body and when the sample is held between the holder main body and the sample presser. holder. The transmission measurement holder according to claim 1,
The holder body includes a body recess for positioning and holding the sample so that the center axis of the sample is positioned on the center axis of the body side light passage hole;
The transmission measurement holder, wherein the main body recess includes a peripheral wall of a recess for defining a position in a direction perpendicular to the axis of the sample with respect to the holder main body. The transmission measurement holder according to claim 2,
A frame for positioning and holding a sample having a size different from that of the sample positioned and held in the main body recess;
The axis of the sample relative to the holder main body is positioned so that the central axis of the sample positioned and held in the frame is positioned on the central axis of the light passage hole on the main body side when the frame is fitted in the concave portion of the main body. A frame inner peripheral wall and a frame outer peripheral wall for defining the orthogonal direction position,
The frame inner peripheral wall positions and holds the sample, and the frame outer peripheral wall is fitted to the main body recess peripheral wall. In the transmission measurement holder according to any one of claims 1 to 3,
The sample press is bent in a substantially Ω-shaped cross section so that a step determined based on the sample thickness is provided between the sample press end and the sample press intermediate portion.
The sample holder is in the direction of the inverted Ω-shaped cross section, the sample holder intermediate part is installed in the holder body, and the sample is sandwiched between the holder body and the sample holder intermediate part,
Alternatively, the sample holder is installed in a direction of a Ω-shaped cross section, the end of the sample holder is installed in the holder body, and the sample is sandwiched between the holder body and the intermediate part of the sample holder. holder. In the transmission measurement holder according to any one of claims 1 to 4,
The sample press includes a ring packing for pressing the sample toward the holder body,
The packing is provided on the sample holder so that the packing central axis is positioned on the central axis of the pressing side light passage hole, and has a packing thickness determined based on the sample thickness. Holder.

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