All-optical framing system suitable for X-ray imaging
An X-ray and imaging technology, applied in the field of optical framing, can solve problems such as measurement inaccuracy, inability to adjust, and susceptibility to interference, and achieve the effects of small image parallax, avoiding electromagnetic interference, and convenient change
Pending Publication Date: 2021-10-19
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology
There are several problems with this technology. First, it uses electronic devices and scanning circuits, which are susceptible to interference in a strong electromagnetic environment, causing measurement inaccuracy. Second, in order to obtain enough framing images, it is necessary to use more The array imaging device, and each imaging device has a large parallax for the imaging of the X-ray source due to the difference in the spatial position; the third is that the single-frame recording time and frame interval time are fixed and cannot be adjusted
Method used
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Embodiment Construction
[0030] The present invention will be further described below in conjunction with embodiment and accompanying drawing.
[0031] Such as Figure 1-Figure 3 As shown, an all-optical framing system suitable for X-ray imaging mainly includes a short-pulse laser 1, a beam expander lens pair, a step mirror 7, a front wedge lens array 8, an X-ray emission source 11, an X-ray Radiation imaging device 10 , ultrafast X-ray response chip 9 , rear wedge lens array 12 , imaging objective lens 14 and recording camera 15 .
[0032] The short-pulse laser 1 provides a laser with a single transverse mode and a pulse width of less than 100 ps as the probe light. The wavelength of the probe light is compatible with the ultrafast X-ray response chip 9 and is close to the conductor response of the semi-ultrafast X-ray response chip 9 The forbidden band width of the medium 91 facilitates obtaining higher absorption characteristics.
[0033] The beam expander lens pair includes a short-focus lens gr...
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The invention discloses an all-optical framing system suitable for X-ray imaging. The all-optical framing system comprises a short pulse laser, a light beam expanding lens pair, a step reflector, a front wedge-shaped lens array, an X-ray emission source, an X-ray imaging device, an ultrafast X-ray response chip, a rear wedge-shaped lens array, an imaging objective lens and a recording camera. According to the all-optical framing system suitable for X-ray imaging adopting the technical scheme, most of all-optical devices used in the whole system can effectively avoid electromagnetic interference of a strong electromagnetic environment on a measuring device, and the all-optical framing system can be used in the strong electromagnetic radiation environment; furthermore, by quickly adjusting and replacing key unit devices, the framing interval between framing images can be conveniently changed; and meanwhile, the parallax of different images relative to the X-ray source image is relatively small.
Description
technical field [0001] The invention relates to the technical field of optical framing, in particular to a plenoptic framing system suitable for X-ray imaging. Background technique [0002] In the field of laser inertial confinement fusion, the space-time high-resolution measurement of images of implosion fusion nuclear reaction regions is a difficult problem. The duration of the nuclear reaction is only a few hundred picoseconds, and the change process is quite violent, and the physical image reflected by it plays an important role in controlling the laser shooting parameters and evaluating the implosion performance. The implosion nuclear reaction will produce a large number of X-rays. The time-dependent measurement of these X-ray images can reverse the real-time changing images of the actual nuclear reaction area. Therefore, it is necessary to use the method of framing measurement to record the X-ray images at different times. , so as to characterize the change of the imp...
Claims
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Login to View More IPC IPC(8): G01N23/083G01N23/04
CPCG01N23/083G01N23/04G01N2223/04G01N2223/1016G01N2223/625G01N2223/626
Inventor 徐涛刘祥明王峰理玉龙彭晓世宋英林杨俊义魏惠月关赞洋任宽
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS