阅读说明：本技术 变倍率x射线高速摄影装置 (Variable-magnification X-ray high-speed photographic device ) 是由 易涛 宋仔峰 詹夏宇 陈铭 肖云青 陈家斌 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种变倍率X射线高速摄影装置,包括用于将X射线转换为荧光的闪烁体,所述闪烁体的两侧分别布置有第一分光片和第二分光片,在所述荧光经过第一分光片的出射光路上依次设有低倍透镜组和低倍门控相机,以形成低倍成像通道,荧光经过第二分光片的出射光路上依次设有高倍透镜组和高倍门控相机,以形成高倍成像通道,所述高倍透镜组的放大倍率大于低倍透镜组；所述低倍门控相机和高倍门控相机均连接在时序脉冲发生器上。本发明的有益效果是：不仅满足了摄影装置变倍的需求,而且能够记录不同时刻的X射线图像信息,从而实现了高速摄影成像。(The invention discloses a variable-magnification X-ray high-speed photographic device, which comprises a scintillator for converting X-rays into fluorescence, wherein a first light splitting sheet and a second light splitting sheet are respectively arranged on two sides of the scintillator, a low-power lens group and a low-power gated camera are sequentially arranged on an emergent light path of the fluorescence passing through the first light splitting sheet so as to form a low-power imaging channel, a high-power lens group and a high-power gated camera are sequentially arranged on an emergent light path of the fluorescence passing through the second light splitting sheet so as to form a high-power imaging channel, and the magnification of the high-power lens group is greater than that of the low-power lens group; and the low-power gating camera and the high-power gating camera are both connected to the time sequence pulse generator. The invention has the beneficial effects that: the requirement of zooming of the photographic device is met, and the X-ray image information at different moments can be recorded, so that high-speed photographic imaging is realized.)

1. A variable-magnification X-ray high-speed photographing device is characterized in that: the X-ray fluorescence imaging device comprises a scintillator (2) for converting X-rays into fluorescence, wherein a first light splitting sheet (1) and a second light splitting sheet (3) are respectively arranged on two sides of the scintillator (2), a low-power lens group (6) and a low-power gated camera (12) are sequentially arranged on an emergent light path of the fluorescence passing through the first light splitting sheet (1) to form a low-power imaging channel, a high-power lens group (5) and a high-power gated camera (10) are sequentially arranged on an emergent light path of the fluorescence passing through the second light splitting sheet (3) to form a high-power imaging channel, and the magnification of the high-power lens group (5) is greater than that of the low-power lens group (6);

the low-power gating camera (12) and the high-power gating camera (10) are both connected to the time sequence pulse generator (9).

2. The variable-magnification X-ray high-speed photographing apparatus according to claim 1, characterized in that: a first beam splitter prism (7) is arranged between the high-power lens group (5) and the high-power gated cameras (10), and the number of the high-power gated cameras (10) is two.

3. The variable-magnification X-ray high-speed photographing apparatus according to claim 2, wherein: and a second beam splitter prism (8) is arranged between the low-power lens group (6) and the low-power gated cameras (12), and the number of the low-power gated cameras (12) is two.

4. The variable-magnification X-ray high-speed photographing apparatus according to claim 3, wherein: and a reflecting mirror (4) is arranged on the light path of the low power imaging channel and is positioned between the low power lens group (6) and the second beam splitter prism (8).

5. The variable-magnification X-ray high-speed photographing apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the first light splitting sheet (1) and the second light splitting sheet (3) are both light splitting flat sheets.

6. The variable-magnification X-ray high-speed photographing apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the low power gating camera (12) and the high power gating camera (10) are both placed in the direction perpendicular to the incidence direction of the X-ray.

Technical Field

The invention relates to a high-speed photographic device, in particular to a variable-magnification X-ray high-speed photographic device.

Background

In the process of dynamic X-ray high-speed photography, because the volume of an object changes at any time in the dynamic process, the magnification of the imaging of the photographing device also needs to be adjusted correspondingly.

Such as: in the process of measuring the electric explosion, the volume of the plasma generated by the electric explosion at the initial moment is small, and a high magnification ratio is needed for observation, and when the volume of the plasma is rapidly increased due to expansion in the final period of the electric explosion, a small magnification ratio is needed for observation, so that the integral shape image of the plasma in the electric explosion process is obtained. Obviously, the existing X-ray photographic device is difficult to meet the requirement of variable-magnification photography in the dynamic measurement process.

Disclosure of Invention

In view of the above, the present invention provides a variable-magnification X-ray high-speed imaging apparatus capable of recording X-ray image information at different times to realize high-speed imaging.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a high-speed photographic device of variable magnification X-ray which the key lies in: the X-ray fluorescence imaging device comprises a scintillator for converting X-rays into fluorescence, wherein a first light splitter and a second light splitter are respectively arranged on two sides of the scintillator, a low-power lens group and a low-power gated camera are sequentially arranged on an emergent light path of the fluorescence passing through the first light splitter to form a low-power imaging channel, a high-power lens group and a high-power gated camera are sequentially arranged on an emergent light path of the fluorescence passing through the second light splitter to form a high-power imaging channel, and the magnification of the high-power lens group is greater than that of the low-power lens group;

and the low-power gating camera and the high-power gating camera are both connected to the time sequence pulse generator.

By adopting the structure, X rays irradiate on the scintillator, the scintillator converts the X rays into fluorescence emission, the emitted fluorescence is reflected by the first light splitting sheet and the second light splitting sheet to form two paths of imaging recording channels, namely a low-power imaging channel and a high-power imaging channel, the low-power lens group and the high-power lens group have different magnifications, and the time sequence pulse generator can generate electric pulses with different time intervals to trigger the low-power gated camera and the high-power gated camera to work, thereby not only meeting the requirement of zooming, but also recording the X-ray image information at different moments, and realizing high-speed photographic imaging.

Preferably, the method comprises the following steps: and a first light splitting prism is arranged between the high-power lens group and the high-power gated cameras, and the number of the high-power gated cameras is two. By adopting the structure, in the high-power imaging channel, the trigger pulse generated by the time sequence pulse generator can control the two high-power gating cameras to record images at different moments.

Preferably, the method comprises the following steps: and a second beam splitter prism is arranged between the low-power lens group and the low-power gated cameras, and the number of the low-power gated cameras is two. By adopting the structure, in the low-power imaging channel, the trigger pulse generated by the time sequence pulse generator can control the two low-power gating cameras to record images at different moments.

Preferably, the method comprises the following steps: and a reflector is arranged on the light path of the low power imaging channel and is positioned between the low power lens group and the second beam splitter prism. By adopting the structure, the light path of the low-power imaging channel can be reflected by 90 degrees, so that components such as a low-power gating camera and the like can be arranged in the photographic device, and the structure of the photographic device is more compact.

Preferably, the method comprises the following steps: the first light splitting sheet and the second light splitting sheet are light splitting flat sheets. By adopting the structure, the beam splitting plain film has smaller thickness and less absorption to X-rays.

Preferably, the method comprises the following steps: the low-power gating camera and the high-power gating camera are both arranged in the direction perpendicular to the incidence direction of the X-ray. By adopting the structure, the camera can avoid the direct irradiation of X-rays, and the interference of X-ray radiation to the camera is reduced.

Compared with the prior art, the invention has the beneficial effects that:

the variable-magnification X-ray high-speed photographic device provided by the invention not only meets the requirement of the photographic device on variable magnification, but also can record the X-ray image information at different moments, thereby realizing high-speed photographic imaging.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1, a variable-magnification X-ray high-speed photographing apparatus structurally includes a scintillator 2, and a first dichroic sheet 1 and a second dichroic sheet 3 symmetrically disposed on both sides of the scintillator 2, wherein after X-rays irradiate the scintillator 2, the scintillator 2 converts the X-rays into fluorescence emission, and the emitted fluorescence is reflected by the first dichroic sheet 1 and the second dichroic sheet 3 to form two imaging recording channels, i.e., a low-magnification imaging channel and a high-magnification imaging channel.

The light path of the low power imaging channel is sequentially provided with a low power lens group 6, a reflector 4, a second beam splitter prism 8 and two low power gated cameras 12, the light path of the high power imaging channel is sequentially provided with a high power lens group 5, a first beam splitter prism 7 and two high power gated cameras 10, and the two low power gated cameras 12 and the two high power gated cameras 10 are connected to a time sequence pulse generator 9.

After the X-ray is converted into visible light by the scintillator 2, the low-power lens group 6 and the high-power lens group 5 with different magnifications in the channel are respectively magnified, and then image recording at different moments is carried out by four gate control cameras, so that high-speed imaging of the variable-magnification X-ray in dynamic process measurement is realized. The low power lens group 6 and the high power lens group 5 are respectively positioned in front of and behind the scintillator 2, collect image signals after X-ray conversion, respectively enter different gate control cameras after light splitting through the first light splitting prism 7 and the second light splitting prism 8, and the time sequence pulse generator 9 generates electric pulses with time intervals to trigger each gate control camera to work so as to record X-ray image information at different moments and realize high-speed photography imaging.

Therefore, the present embodiment allows the photographing apparatus to have different magnifications by installing lens groups of different magnifications in the low power imaging channel and the high power imaging channel. Meanwhile, light splitting prisms are arranged on the low-power imaging channel and the high-power imaging channel, optical light splitting is carried out to form two light paths, one gate control camera is arranged on each light path, and a time sequence pulse generator 9 is adopted to generate trigger pulses to control each gate control camera to record image information at different moments.

Since the X-ray passes through the first dichroic filter 1 during the process of irradiating the scintillator 2, both the first dichroic filter 1 and the second dichroic filter 3 use dichroic slabs, which have smaller thickness and can reduce the absorption of the X-ray.

In order to keep the gated camera out of direct exposure to X-rays to reduce interference of X-ray radiation with the camera, the low power gated camera 12 and the high power gated camera 10 are both placed in an orientation perpendicular to the direction of incidence of the X-rays.

In this embodiment, the timing pulse generator 9 triggers pulse signals in different sequences, so that three modes of variable-magnification X-ray high-speed imaging can be formed.

One is as follows: firstly triggering a high-power gating camera 10 of a high-power imaging channel to record image information, and then triggering a low-power gating camera 12 of a low-power imaging channel to record image information, so as to realize variable-magnification recording of 'high first and low second';

the second is that: triggering a low-power gating camera 12 of a low-power imaging channel to record image information, and triggering a high-power gating camera 10 of a high-power imaging channel to record image information, so as to realize variable-magnification recording of 'low first and high last';

the third step is that: the high-low variable-magnification recording is realized by alternately triggering the gate control cameras of different channels.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.