A device and method for measuring the inclination angle of a square hole channel of a lobster eye lens

A technology of lobster eye lens and hole channel, which is applied in the field of X-ray detection and imaging, can solve the problems of interference and diffraction, unusability, etc., and achieve the effect of simple operation, easy realization, and improved process parameters

Active Publication Date: 2020-12-08
NORTH NIGHT VISION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the geometric parameters of the MPO lens, conventional optical detection methods will produce interference and diffraction phenomena and cannot be used

Method used

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  • A device and method for measuring the inclination angle of a square hole channel of a lobster eye lens
  • A device and method for measuring the inclination angle of a square hole channel of a lobster eye lens
  • A device and method for measuring the inclination angle of a square hole channel of a lobster eye lens

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Embodiment

[0044] Please refer to the attached figure 1 , the specific implementation steps of the embodiment of the present invention are:

[0045] Step 1: Find the surface of the MPO lens that is perpendicular to the X-ray. This process can be easily realized by laser irradiating the surface of the lens to generate interference fringes. The working principle is that the laser irradiates the surface of the lens to produce interference fringes. If the MPO lens is tilted and not perpendicular to the optical axis, then the optical path difference between the two is not equal, and the interference fringes shown in the subsequent drawings are not clear, and the angle of the MPO is constantly adjusted. , until the interference fringes are the clearest, the default square hole channel surface and the optical axis are perpendicular to each other.

[0046] Step 2: Place the aperture B with a diameter of 0.5mm at the center of 170cm away from the light source. After the installation is completed...

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Abstract

The invention discloses a device and a method for measuring the dip angle of a square hole channel of a lobster eye lens. The method comprises the following steps: first, adjusting an X-ray light source, an MPO lens and an SDD detector to a coaxial optical system through a six-dimensional precision device table and a laser generator; second, constraining an X-ray beam emitted by an X-ray light pipe to a quasi parallel X-ray beam through a diaphragm A and a diaphragm B to be irradiated to the MPO lens; then adjusting the state of the MPO lens through the six-dimensional precision device table to maximize the count of the SDD detector, wherein the dip angle of the square hole channel of the MPO lens is the rotating angle of the precision table at the moment; and scanning the position of theMPO in a two-dimensional manner to record the dip angles of the square hole channel of the MPO lens in different positions. The device and method are simple to operate and high in measuring precision,and can detect the dip angle of the MPO lens quickly to acquire dip angle information of the channels in different positions accurately, so that a process is guided favorably and the quality problemis found favorably.

Description

technical field [0001] The invention relates to the field of X-ray detection and imaging, in particular to a device and method for measuring the inclination angle of a square hole channel of a lobster eye lens. Background technique [0002] In 1979, Angle proposed for the first time to develop a lobster-eye X-ray astronomical telescope based on a square array structure based on the lobster-eye structure. However, limited by the manufacturing technology and processing level at that time, it was not until the 1990s, with the maturity of a new type of micro-pore optical system (Micro-pore optic, MPO), that the LE system was realized and promoted. In 2004, Libor Sveda et al. designed a model of the lobster eye device, and simulated and demonstrated the feasibility of the lobster eye telescope in space. In 2005, NASA and DARPA jointly developed the Lobster-ISS telescope (including 6 Angle-type spherical square hole MPO mirrors). In 2009, ESA and the University of Leicester join...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C9/00
CPCG01C9/00
Inventor 张诗鲲黎龙辉高鹏张振金睦淳丛晓庆姜博文张欢周新
Owner NORTH NIGHT VISION TECH
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