Precise adjusting device for X-ray high-resolution detector scintillator

Abstract

The utility model relates to an X-ray high-resolution detector scintillator precision adjusting device, which relates to the field of X-ray imaging and comprises a fixing ring, a coarse adjustment locking nut, a coarse adjustment ring, a fine adjustment locking nut, a fine adjustment ring, a tungsten sheet and a fixing cover. The fixing ring is used for fixing the adjusting device and the objective lens; the coarse adjustment locking nut and the coarse adjustment ring are used for coarse adjustment of the position of the scintillator; the fine adjustment locking nut and the fine adjustment ring are used for finely adjusting the position of the scintillator and placing the scintillator; the tungsten sheet is used for absorbing redundant X-rays so as to avoid influence on a rear-end visible light optical system; and the fixing ring is used for fixing the tungsten sheet. By utilizing the device, the aim of precisely adjusting and positioning the scintillator can be quickly realized, so that the X-ray high-resolution detector can be clearly imaged.

Description

Technical Field

[0001] The utility model relates to the field of X-ray imaging, in particular to a scintillator precision adjustment device for an X-ray high-resolution detector. Background Art

[0002] In the field of X-ray imaging, in order to achieve higher spatial resolution, the use of high-resolution detectors is a feasible approach; the high-resolution detector includes a scintillator, an objective lens and a visible light optical system. In order to achieve clear imaging of the high-resolution detector, the distance between the scintillator and the objective lens needs to be precisely adjusted, and the position deviation cannot exceed 5 microns. However, pure manual adjustment is difficult, which brings great difficulties to the installation and adjustment of the system; in order to reduce the difficulty of installation and adjustment, the utility model relates to a scintillator precision adjustment device for achieving precise adjustment of the scintillator position. Utility Model Content

[0003] In view of the deficiencies in the prior art and the need for installation and adjustment of X-ray high-resolution detectors, the utility model relates to a scintillator precision adjustment device, thereby achieving the purpose of precise adjustment of the scintillator position in the X-ray high-resolution detector.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A scintillator precision adjustment device for an X-ray high-resolution detector comprises a fixing ring, a coarse adjustment locking nut, a coarse adjustment ring, a fine adjustment locking nut, a fine adjustment ring, a tungsten sheet, and a fixing cover.

[0006] Furthermore, the fixing ring is sleeved on the objective lens, and its diameter is slightly larger than the outer diameter of the objective lens. A threaded hole is provided at one end for installing a locking bolt, and the fixing ring can be fixed to the objective lens through the locking bolt. The other end has an external thread of the fixing ring with a moderate pitch, and a coarse adjustment locking nut and a coarse adjustment ring are installed on the external thread in sequence.

[0007] Furthermore, the coarse adjustment locking nut has a coarse adjustment locking nut internal thread consistent with the external thread of the fixing ring, and is rotatably installed on the external thread of the fixing ring; one end of the coarse adjustment ring has a coarse adjustment ring internal thread consistent with the external thread of the fixing ring, and is rotatably installed on the external thread of the fixing ring, and the other end has a coarse adjustment ring external thread with a pitch not greater than 0.75mm, which is used to install the fine adjustment locking nut and fine adjustment ring.

[0008] Furthermore, the fine adjustment locking nut has a fine adjustment locking nut internal thread that is consistent with the coarse adjustment ring external thread, and is rotatably installed on the coarse adjustment ring external thread; one end of the fine adjustment ring has a fine adjustment ring internal thread that is consistent with the coarse adjustment ring external thread, and is rotatably installed on the coarse adjustment ring external thread, and the other end has a fine adjustment ring external thread with a moderate pitch, and a fixing cover is installed; one end of the fine adjustment ring external thread is semi-closed, and a scintillator is fixed on it, which can be glued or fixed with tape; a small hole with a diameter of about 5 mm is opened in the middle, which can pass visible light converted by the scintillator.

[0009] Furthermore, the tungsten sheet is made of metallic tungsten, has a diameter slightly smaller than the outer diameter of the fine-tuning ring, and is approximately 2 mm thick. It is placed at the front end of the fine-tuning ring to absorb excess X-rays and avoid affecting the rear-end visible light optical system. A circular hole with a diameter of approximately 8 mm is opened in the center for passing X-rays.

[0010] Furthermore, one end of the fixing cover has an internal thread that is consistent with the external thread of the fine adjustment ring, and one end is an opening with a diameter slightly smaller than the diameter of the tungsten sheet for fixing the tungsten sheet.

[0011] Furthermore, when using the device, first lock and fix the fixing ring and the objective lens with a locking bolt, assemble the adjustment device in the order of coarse adjustment locking nut, coarse adjustment ring, fine adjustment locking nut, fine adjustment ring, scintillator, tungsten sheet, and fixed cover, and connect it to the visible light optical system at the rear end through the objective lens to complete the preliminary assembly of the X-ray high-resolution detector; then use the assembled detector to perform imaging, and when the image is blurred, first perform coarse adjustment by rotating the coarse adjustment ring until the image is clearer, and then rotate the coarse adjustment locking nut to lock the position of the coarse adjustment ring to complete the coarse adjustment of the scintillator position; then rotate the fine adjustment ring to fine-tune the scintillator position until the image is clear, rotate the fine adjustment locking nut to lock the position of the fine adjustment ring to complete the fine adjustment of the scintillator position; at this point, the scintillator position meets the requirements, and the adjusted high-resolution detector can be used for clear imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the structure of the scintillator precision adjustment device for X-ray high-resolution detectors

[0013] Figure 2 Exploded diagram of the structure of the scintillator precision adjustment device for X-ray high-resolution detectors

[0014] Figure 3 Schematic diagram of the coarse adjustment ring structure

[0015] Figure 4 Schematic diagram of fine adjustment ring structure

[0016] In the figure: 1. Retaining ring 2. Coarse adjustment locking nut 3. Coarse adjustment ring 4. Fine adjustment locking nut 5. Fine adjustment ring 6. Tungsten plate 7. Retaining cover 8. Objective lens 9. Scintillator

[0017] 11.Threaded hole 12. Locking bolt 13. External thread of fixing ring

[0018] 21. Coarse adjustment lock nut internal thread

[0019] 31. Inner thread of coarse adjustment ring 32. Outer thread of coarse adjustment ring

[0020] 41. Fine-tune the internal thread of the locking nut

[0021] 51. Fine adjustment ring internal thread 52. Fine adjustment ring external thread 53. Fine adjustment ring small hole

[0022] 61.Tungsten sheet circular hole

[0023] 71. Internal thread of fixing ring 72. Opening of fixing ring DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-2 A device for precisely adjusting a scintillator of an X-ray high-resolution detector includes a fixing ring 1, a coarse adjustment locking nut 2, a coarse adjustment ring 3, a fine adjustment locking nut 4, a fine adjustment ring 5, a tungsten sheet 6, and a fixing cover 7.

[0026] Among them, the fixing ring 1 and the objective lens 8 are fixed by a locking bolt 12; the coarse adjustment locking nut 2 and the coarse adjustment ring 3 are connected to the fixing ring 1 through the coarse adjustment locking nut internal thread 21 and the coarse adjustment ring internal thread 31, which can realize the coarse adjustment of the position of the scintillator 9; the fine adjustment locking nut 4 and the fine adjustment ring 5 are connected to the coarse adjustment ring 3 through the thin strip locking nut internal thread 41 and the fine adjustment ring internal thread 51, which can realize the fine adjustment of the position of the scintillator 9, and the scintillator 9 can be installed at one end of the fine adjustment ring 5 to support the scintillator 9; the tungsten sheet 6 is fixed to the end of the fine adjustment ring 5 where the scintillator 9 is installed by using the fixing cover 7, and the fixing cover 7 is connected to the fine adjustment ring 5 through the fixing cover internal thread 71.

[0027] When using the device, the fixing ring 1 and the objective lens 8 are locked and fixed by the locking bolt 12, and the adjustment device is assembled in the order of the coarse adjustment locking nut 2, the coarse adjustment ring 3, the fine adjustment locking nut 4, the fine adjustment ring 5, the scintillator 9, the tungsten sheet 6, and the fixing cover 7. The device is then connected to the rear visible light optical system through the objective lens 8 to complete the preliminary assembly of the X-ray high-resolution detector; then the assembled detector is used for imaging. When the image is blurred, first perform coarse adjustment by rotating the coarse adjustment ring 3 until the image is clearer, and then rotate the coarse adjustment locking nut 12 to adjust the image. 2, lock the position of the coarse adjustment ring 2 to complete the coarse adjustment of the scintillator 9 position; if the coarse adjustment cannot make the image clear, loosen the locking bolt 12 on the fixing ring 1, adjust the relative position of the fixing ring 1 and the objective lens 8, and perform coarse adjustment again until the image can be slightly clearer; then rotate the fine adjustment ring 5 to fine-tune the position of the scintillator 9 until the image is clear, rotate the fine adjustment locking nut 4, lock the position of the fine adjustment ring 5, and complete the fine adjustment of the position of the scintillator 9; at this point, the position of the scintillator 9 meets the requirements, and the adjusted high-resolution detector can be used to obtain clear images.

[0028] To sum up, when the present invention is in use, the adjustment device is connected through threads in a certain order and connected to the visible light optical system at the rear end to complete the preliminary assembly of the detector; then X-rays are used for imaging, and the scintillator is accurately positioned through coarse adjustment and fine adjustment, and its position is fixed by the locking nut, thereby achieving the purpose of precise adjustment of the scintillator position. The structure is simple, the positioning is accurate, and the operation is convenient.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the signing format, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A scintillator precision adjustment device for an X-ray high-resolution detector, characterized in that: include: A fixing ring (1), a coarse adjustment locking nut (2), a coarse adjustment ring (3), a fine adjustment locking nut (4), a fine adjustment ring (5), a tungsten sheet (6), and a fixing cover (7); the fixing ring (1) is used to fix the adjustment device to the objective lens; the coarse adjustment locking nut (2) and the coarse adjustment ring (3) are sequentially mounted on the fixing ring (1) through threads; the fine adjustment locking nut (4) and the fine adjustment ring (5) are sequentially mounted on the coarse adjustment ring (3) through threads, and the fine adjustment ring (5) is used to place a scintillator; the fixing cover (7) is mounted on the fine adjustment ring (5) through threads; The tungsten sheet (6) is installed between the fine adjustment ring (5) and the fixed cover (7), and is fixed by the fixed cover (7).

2. The X-ray high-resolution detector scintillator precision adjustment device according to claim 1, characterized in that: The fixing ring (1) is sleeved on the objective lens (8), and its diameter is slightly larger than the outer diameter of the objective lens. A threaded hole (11) is provided at one end for installing a locking bolt (12). The fixing ring (1) and the objective lens (8) can be locked by the locking bolt (12). The other end is provided with an outer thread (13) of the fixing ring with a moderate pitch for installing a coarse adjustment locking nut (2) and a coarse adjustment ring (3).

3. The device for precisely adjusting a scintillator of an X-ray high-resolution detector according to claim 1, characterized in that: The coarse adjustment locking nut (2) has a coarse adjustment locking nut internal thread (21) that is consistent with the fixed ring external thread (13) and is rotatably mounted on the fixed ring external thread (13); one end of the coarse adjustment ring (3) has a coarse adjustment ring internal thread (31) that is consistent with the fixed ring external thread (13) and is rotatably mounted on the fixed ring external thread (13), and the other end has a coarse adjustment ring external thread (32) with a pitch of no more than 0.75 mm for mounting the fine adjustment locking nut (4) and the fine adjustment ring (5).

4. The device for precisely adjusting a scintillator of an X-ray high-resolution detector according to claim 1, characterized in that: The fine adjustment locking nut (4) has a fine adjustment locking nut internal thread (41) that is consistent with the coarse adjustment ring external thread (32) and is rotatably mounted on the coarse adjustment ring external thread (32); one end of the fine adjustment ring (5) has a fine adjustment ring internal thread (51) that is consistent with the coarse adjustment ring external thread (32) and is rotatably mounted on the coarse adjustment ring external thread (32); the other end has a fine adjustment ring external thread (52) with a moderate pitch for mounting the fixing cover (7); one end of the fine adjustment ring external thread (52) is semi-closed, and is used to fix the scintillator (9) thereon, and can be fixed by glue or tape; a small hole (53) with a diameter of about 5 mm is opened in the middle for passing the visible light converted by the scintillator (9).

5. The device for precisely adjusting a scintillator of an X-ray high-resolution detector according to claim 1, characterized in that: The tungsten sheet (6) is made of metallic tungsten, has a diameter slightly smaller than the outer diameter of the fine adjustment ring, and is approximately 2 mm thick. It is placed at the front end of the fine adjustment ring (5) to absorb excess X-rays and avoid affecting the rear visible light optical system. A circular hole (61) with a diameter of approximately 8 mm is opened in the middle thereof to pass the X-rays.

6. The device for precisely adjusting a scintillator of a high-resolution X-ray detector according to claim 1, characterized in that: One end of the fixed cover (7) has a fixed cover internal thread (71) consistent with the fine adjustment ring external thread (52), and one end is an opening (72). The diameter of the opening (72) is slightly smaller than the diameter of the tungsten sheet (6) for fixing the tungsten sheet (6).

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