JPH0116036Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sample holder for an optical measuring device.
The present invention relates to a sample holder that has a structure that combines a rotating means and a suction means and is effectively used for optical measurements.

When measuring the spectral transmission spectrum of a sample that requires optical measurement, such as diamond,
It is necessary to set the sample in the holder and rotate the sample at high speed (for example, 1000 rpm) to eliminate errors due to sample asymmetry.

For this reason, it is necessary to firmly fix the sample to the holder, and conventional methods have been to fix it with adhesive or press it with springs, etc., but this had the disadvantage that it was not possible to quickly and easily attach and detach the sample.

The present invention solves the above-mentioned drawbacks, and has a sample holder at the tip that is shaped to match the shape of the sample, a suction hole that communicates from the sample holder to the circumferential surface of the shaft-shaped body, and A rotating body rotated by a motor, etc.
The rotating body is slidably wrapped around the body of the rotating body so as to cover the circumferential surface of the body of the rotating body in which the suction hole opens, and a decompression space is formed between the rotating body and the body and the body is in substantially constant communication with the suction hole. The present invention provides a sample holder for an optical measuring device, which includes a rotating annular member and a depressurizing means for reducing the pressure in the depressurized space through a depressurizing hole formed in the non-rotating annular member.

This invention will be explained in detail below based on the illustrated embodiments, but the present invention is not limited thereto.

Figure 1 shows holder 1 holding diamond D.
FIG.

The rotation support part 2 is attached to the rotation axis A of the motor M.
installed vertically.

A shaft-shaped body portion 3 is attached to the rotation support portion 2 and has an internal space 4 coaxially bored through the rotational axis A and a plurality of communication holes 5 communicating from the internal space 4 to the circumferential surface. It is being

Furthermore, this body 3 has a conical recess 8 on the front surface that holds the pavilion P side of the brilliant cut diamond D, and the bottom of the conical recess 8 communicates with the internal space 4 of the body 3. A sample holding section 6 having suction holes 7 is attached.

These rotating support section 2, body section 3, and sample holding section 6 are rotated together by a motor M, that is, constitute a rotating body. Further, the communication hole 5, the internal space 4, and the suction hole 7 constitute a suction hole for suctioning and fixing the diamond D.

An annular member 9 that rotatably and slidably grips the body 3 is attached around the circumferential surface of the body 3 in which the communication hole 5 is opened so as to airtightly cover the circumferential surface. This annular member 9 does not rotate.

The inner circumferential surface of the annular member 9 and the corresponding body portion 3
Since ring-shaped grooves 11 and 12 are provided on the peripheral surface, an airtight ring-shaped space 1 is formed in this part.
3 is formed.

The ring-shaped space 13 is communicated with the vacuum pump V via the connection pipe L through the depressurization hole 10 and is depressurized, so that it constitutes a depressurized space.

Since this holder 1 is configured as described above, when air is sucked by the vacuum pump V, the ring-shaped space 13, the circulation hole 5, the internal space 4, and the suction hole 7 are depressurized to form a vacuum system, and the conical recess is The diamond D attached to 8 is firmly fixed to the holding part 6 by suction.

Therefore, even if the diamond D is rotated, it is securely fixed to the holder 1, and its transmission spectrum can be suitably measured.

After the measurement is completed, the diamond D can be easily removed from the holder 1 by releasing the vacuum.

In addition, the rotation support part 2, the body part 3, which forms a rotating body,
The holding portion 6 and the like may be made separately and integrated using normal fixing means (for example, bolts, etc.), but they may also be made integrally by cutting.

FIG. 2 is an explanatory sectional view showing another embodiment,
Components corresponding to those of the embodiment of FIG. 1 are designated by the same reference numerals. However, the suction hole 7 and the internal space 4 are integrated. 21 is a torso.

This holder 20 is suitable for holding a flat sample S such as a plastic plate, a glass plate, or a standard white plate.

Reference numeral 22 denotes an auxiliary plate used when the sample S, such as paper or cloth, is weak against vacuum and cannot maintain a flat surface, and has a plurality of through holes 23 .

As is clear from the above description, the optical measuring device holder of the present invention can quickly and easily attach and detach a sample to be subjected to optical measurement such as reflected light measurement.
Moreover, since it can be held firmly, it is extremely useful when measuring a sample while rotating at high speed.

[Brief explanation of the drawing]

FIG. 1 is an explanatory sectional view of one embodiment of a sample holder for an optical measuring device according to the present invention, and FIG. 2 is an explanatory sectional view of another embodiment. 1, 20...Sample holder for optical measurement device, 3
...Body part, 4...Inner space, 5...Communication hole, 6...
... Sample holding part, 7 ... Adsorption hole, 9 ... Annular member,
10... Decompression hole, 13... Ring-shaped space.

Claims (1)

[Scope of utility model registration request] A rotary body that has a sample holder shaped to match the shape of the sample at its tip, has a suction hole that communicates from the sample holder to the circumferential surface of the shaft-shaped body, and is rotated by a motor or the like; A non-rotating annular body that is slidably wrapped around the rotary body so as to cover the circumferential surface of the rotary body body in which the hole is opened, and forms a decompressed space between the rotary body and the rotary body that is in substantially constant communication with the suction hole. A sample holder for an optical measuring device, comprising: a member; and a depressurizing means for depressurizing the depressurized space through a depressurizing hole bored in the non-rotating annular member.