JPH06294899A - Curved total reflection mirror camera - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a curved total reflection mirror camera with good operability, which enables easy fine adjustment of the position of the focal point F2. A curved total reflection mirror camera used in a curved total reflection mirror camera in which X-rays 1 emitted from a focal point F1 of an X-ray source are focused on a focal point F2 on an X-ray detection means 4 by curved total reflection mirrors 12 and 13. The reflection mirrors 12 and 13 are equipped with mirror rotation moving mechanisms 14 and 15, respectively. The respective mirror rotation moving mechanisms 14 and 15 rotate and move the corresponding curved total reflection mirror in a plane orthogonal to the reflecting surface of the corresponding curved total reflection mirror with the focal point F1 of the X-ray source as the center of rotation. Let it be configured to.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved total reflection mirror camera for focusing X-rays emitted from a focal point F1 of an X-ray source on a focal point F2 on an X-ray detecting means by a curved total reflection mirror.

[0002]

2. Description of the Related Art FIG. 2 shows a schematic structure of a curved total reflection mirror camera. This curved total reflection mirror camera focuses a divergent X-ray 1 emitted from a focal point F1 of an X-ray source on an X-ray detection means 4 by two curved total reflection mirrors, a vertical mirror 2 and a horizontal mirror 3. Reference numeral 5 in the figure denotes a sample irradiated with the X-rays condensed by the mirrors 2 and 3, and F2 denotes a focus (X
The focus position of the line).

The size of the focus F1 is, for example,
The focal point is about 0.3 × 0.3 mm 2. Although not shown, between the sample 5 and the horizontal mirror 3,
A guard slit for cutting unnecessary scattered X-rays is arranged.

The vertical mirror 2 is held in a state where the curved reflecting surface 2a is orthogonal to the horizontal plane, and the horizontal mirror 3
Is held in a state where the curved reflecting surface 3a is orthogonal to the vertical plane. That is, the vertical mirror 2 and the horizontal mirror 3 are arranged so as to be orthogonal to each other.

The X-ray detecting means 4 may be an X-ray film, an imaging plate using a phosphor layer for accumulating X-rays, or other position-sensitive X-ray detectors.

The curved total reflection mirror camera having the above-described structure is used for the measurement of scattering in the small angle region because of its excellent small angle resolution, and the supramolecular structure of a living body such as a virus, a biological membrane or a muscle. It is widely used in research and structural studies of fibrous biopolymers and synthetic polymers.

In such a curved total reflection mirror camera,
In order to adjust the position of the focal point F2, it is necessary to finely adjust the curved state and installation position of each vertical mirror 2 and horizontal mirror 3. Therefore, conventionally, each of the vertical mirror 2 and the horizontal mirror 3 is equipped with a vent mechanism, a mirror rotation mechanism, and a translation mechanism.

As shown in FIG. 3, the vent mechanism fixedly supports the center of the curved total reflection mirror 7 and also supports the reflecting surfaces 7 at the four corners of the curved total reflection mirror 7.
This is a mechanism for adjusting the curved state of the reflecting surface 7a by applying a force f in a direction orthogonal to a.

As shown in FIG. 4, the mirror rotating mechanism is a mechanism for rotating the mirror 7 in a direction orthogonal to the reflecting surface 7a with the center of the reflecting surface 7a of the curved total reflection mirror 7 as a rotation center O (FIG. 4). The two-dot chain line in the figure shows the position before the rotating operation, and the shaded solid line shows the position after the rotating operation).
For example, in the case of the above-mentioned vertical mirror 2, the horizontal rotation operation is controlled, and in the case of the horizontal mirror 3, the vertical rotation operation is controlled.

As shown in FIG. 5, the translation mechanism moves the curved total reflection mirror 7 in a direction orthogonal to the reflecting surface 7a (the two-dot chain line in the figure indicates the position before the parallel movement operation, The shaded solid line shows the position after the parallel movement operation).

[0011]

By the way, when the curved total reflection mirror camera described above is used for the measurement, the position of the focus F2 is adjusted in advance.

In this adjustment operation, first, the vent mechanism, the mirror rotation mechanism, and the translation mechanism described above are operated so that the divergent X-rays 1 emitted from the focal point F1 are point-focused on the X-ray detection means 4. The position and the curved state of the two mirrors 2 and 3 are set. Then, when the focus F2 is located at the end of the X-ray detecting means 4, the position of the focus F2 is brought to the center of the X-ray detecting means 4 by finely adjusting the positions of the mirrors 2 and 3. Adjust to.

In such adjustment operation, each mirror 2, 3
Since it is necessary to set the incident angle (emission angle) with respect to 0.5 degree or less with high accuracy, the setting operation of the incident angle of each mirror 2 and 3 requires a careful and time-consuming operation.

However, in the conventional curved total reflection mirror camera described above, the positions of the mirrors 2 and 3 are adjusted by the parallel movement of the translation mechanism. When this parallel movement operation is performed, as shown in FIG. 6, the incident angle changes between before the translation indicated by the chain double-dashed line and after the translation indicated by the solid line. Therefore, in the conventional curved total reflection mirror camera, even if the positions and the curved states of the mirrors 2 and 3 are once set so that they are focused on the X-ray detecting means 4, the position of the focus F2 is finely adjusted. When the mirrors 2 and 3 are translated, the mirror rotation mechanism and the like must be operated again to set the incident angle again, which is very troublesome for fine adjustment of the position of the focus F2. There was a problem of this.

The present invention has been made in view of the above circumstances. When the curved total reflection mirror is moved for fine adjustment of the position of the focal point F2, the incident angle set before that is changed. You can move the curved total reflection mirror without
It is an object of the present invention to provide a curved total reflection mirror camera with good operability that does not require work such as resetting the incident angle and can easily perform fine adjustment of the position of the focal point F2.

[0016]

In a curved total reflection mirror camera according to the present invention, an X-ray emitted from a focus F1 of an X-ray source is focused by a curved total reflection mirror on a focus F2 on an X-ray detecting means.
The curved total reflection mirror used is equipped with a mirror rotation moving mechanism. And
The mirror rotating / moving mechanism is configured to rotate and move the curved total reflection mirror in a plane orthogonal to the reflecting surface of the curved total reflection mirror with the focal point F1 of the X-ray source as the center of rotation.

[0017]

In the curved total reflection mirror camera according to the present invention, fine adjustment of the position of the focus F2 is performed by rotating the curved total reflection mirror by the mirror rotation moving mechanism. Then, since the rotational movement is about the focal point F1, the incident angle at the curved total reflection mirror does not change.

[0018]

1 shows an embodiment of a curved total reflection mirror camera according to the present invention. In the curved total reflection mirror camera of this embodiment, the divergent X-ray 1 emitted from the focal point F1 of the X-ray source is converted into X-ray detection means 4 by two curved total reflection mirrors, a vertical mirror 12 and a horizontal mirror 13. A point is focused on the upper part, and reference numeral 5 in the drawing is a sample irradiated with the X-rays condensed by the mirrors 12 and 13, and F2 is a focal point on the X-ray detecting means 4 (focusing position of the X-ray). Is.

The focus F1 is, for example, in terms of size,
The focal point is about 0.3 × 0.3 mm 2. Although not shown, between the sample 5 and the horizontal mirror 3,
A guard slit for cutting unnecessary scattered X-rays is arranged.

The vertical mirror 12 has a curved reflecting surface 12
a is held perpendicular to the horizontal plane, and the horizontal mirror 13 is held such that the curved reflecting surface 13a is perpendicular to the vertical plane. That is, the vertical mirror 12 and the horizontal mirror 13 are arranged in a relationship orthogonal to each other.

The X-ray detecting means 4 may be an X-ray film, an imaging plate using a phosphor layer for accumulating X-rays, or other position-sensitive X-ray detectors.

In the curved total reflection mirror camera of this embodiment, the vertical mirror 12 is used to adjust the position of the focus F2.
Each of the horizontal mirror 13 and the horizontal mirror 13 is equipped with the vent mechanism described above with reference to FIG. 3 and the mirror rotation mechanism described with reference to FIG. 4 as in the conventional case.
Instead of the conventional translation mechanism, the mirror rotation moving mechanism 14,
Equipped with 15.

The mirror rotation moving mechanism 14 rotates the vertical mirror 12 in a plane (that is, a horizontal plane) orthogonal to the reflecting surface 12a of the vertical mirror 12 with the focal point F1 of the X-ray source as the center of rotation. It is what makes me. Reference numeral 14a in the drawing is a vertical axis passing through the focal point F1, and 14b is an arm member having the vertical axis 14a as a rotation axis. The tip of this arm member is connected to the vertical mirror 12. Arm member 14
b is rotationally operated by a drive means (not shown). Arm member 1
The drive means for rotating 4b about the vertical axis 14a is
A known appropriate mechanism such as an advancing / retreating mechanism using a feed screw can be used.

The mirror rotating / moving mechanism 15 rotates the horizontal mirror 13 in a plane (that is, a vertical plane) orthogonal to the reflecting surface 13a of the horizontal mirror 13 with the focal point F1 of the X-ray source as the center of rotation. It is something to move. Reference numeral 15a in the drawing is a horizontal axis passing through the focal point F1, and 15b is an arm member having the horizontal axis 15a as a rotation axis. This arm member 15
The tip of b is connected to the horizontal mirror 13. The arm member 15b is rotationally operated by a driving means (not shown). As the drive means for rotating the arm member 15b around the horizontal axis 15a, a well-known appropriate mechanism such as an advancing / retreating mechanism using a feed screw can be used.

In the curved total reflection mirror camera of the above embodiment, the vertical mirror 12 and the horizontal mirror 13 are provided in this order in order so that the divergent X-rays 1 are focused on the X-ray detecting means 4. By operating the bent mechanism and the mirror rotation mechanism, the optimum incident angle on each mirror 12, 13 is set. When the position of the focal point F2 on the X-ray detecting means 4 is finely adjusted after the optimum incident angle is once set, the vertical mirror 12 and the horizontal mirror 13 are operated by operating the mirror rotation moving mechanisms 14 and 15. Adjust the position of.

As shown in FIG. 7, the rotational movements by the mirror rotational movement mechanisms 14 and 15 are rotational movements about the focal point F1. Therefore, for example, the position of the mirror is set to M1.
From M to M2, the angle of incidence on the mirror does not change. Therefore, if the incident angles to the respective mirrors are first correctly set and adjusted, then even if the respective mirrors 12 and 13 are moved for fine adjustment of the position of the focal point F2, the work of resetting the incident angles and the like will be performed. Is unnecessary, fine adjustment of the position of the focus F2 is facilitated, and operability at the time of fine adjustment of the position of the focus F2 is greatly improved.

Incidentally, in the above-described embodiment, each mirror 1
Reference numerals 2 and 13 denote mirror rotation moving mechanism 14 according to the present invention.
In addition to 15, the conventional vent mechanism and the mirror rotation mechanism are provided, but the conventional mirror rotation mechanism may be omitted if necessary.

Further, in the above-mentioned one embodiment, the camera of the type using two curved total reflection mirrors has been described.
It goes without saying that the present invention can also be applied to the case where incident X-rays are linearly focused using one curved total reflection mirror.

[0029]

As is apparent from the above description, in the curved total reflection mirror camera according to the present invention, fine adjustment of the position of the focal point F2 is performed by rotating the curved total reflection mirror by the mirror rotation moving mechanism. However, in the moving operation by this mirror rotation moving mechanism, since the rotational movement is about the focal point F1, the incident angle at the curved total reflection mirror does not change.

Therefore, if the incident angle to the curved total reflection mirror is first correctly set and adjusted, then even if the curved total reflection mirror is moved for fine adjustment of the position of the focal point F2 or the like, the incident angle is re-adjusted. No work such as setting is required, fine adjustment of the position of the focus F2 is facilitated, and operability at the time of fine adjustment of the position of the focus F2 is greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a curved total reflection mirror camera.

FIG. 3 is an explanatory view of a vent mechanism equipped in a conventional curved total reflection mirror camera.

FIG. 4 is an explanatory diagram of a mirror rotation mechanism equipped in a conventional curved total reflection mirror camera.

FIG. 5 is an explanatory diagram of a translation mechanism equipped in a conventional curved total reflection mirror camera.

FIG. 6 is an explanatory diagram of a problem in a conventional curved total reflection mirror camera.

FIG. 7 is an explanatory view of the operation of the embodiment of the present invention.

[Explanation of symbols]

 1 divergent X-ray 4 X-ray detection means F1, F2 focus 12 vertical mirror (curved total reflection mirror) 13 horizontal mirror (curved total reflection mirror) 14, 15 mirror rotation moving mechanism

Claims (1)

[Claims] 1. A curved total reflection mirror camera for converging X-rays emitted from a focal point F1 of an X-ray source to a focal point F2 on an X-ray detecting means by a curved total reflection mirror, the focal point F1 of the X-ray source. A curved total reflection mirror camera equipped with a mirror rotation moving mechanism that rotationally moves the curved total reflection mirror in a plane orthogonal to the reflection surface of the curved total reflection mirror with the center of rotation as the center of rotation.