Pinhole high-definition imaging device and pinhole imaging system

Abstract

The invention discloses a pinhole high-definition imaging device which comprises a substrate with a pinhole area, the diameter of the pinhole area is 10-100 micrometers, micro-nano small holes distributed in an asymmetric mode are formed in the pinhole area, and the aperture of the micro-nano small holes is in the hundred-nanometer magnitude. The large number of micro-nano small holes are randomly distributed in the pinhole, so that diffraction of the pinhole can be inhibited, and the final imaging resolution of the pinhole is approximate to the description of geometrical optics within a certain limit. Compared with pinhole imaging with the same aperture, the device breaks through the limitation of diffraction on the aperture of the pinhole, the pinhole can be made smaller, and the final imaging resolution is higher. Compared with performance of traditional pinhole imaging, the diffraction efficiency of a system is reduced through the large number of micro-nano small holes, the effect of a neutral filter is achieved, and the light intensity of incident light can be weakened on the premise that spectral information of the incident light is not changed so that imaging equipment can be protected. The invention further discloses a pinhole imaging system with the pinhole high-definition imaging device.

Description

technical field [0001] The invention relates to the technical field of pinhole imaging, in particular to a pinhole high-definition imaging device and a pinhole imaging system. Background technique [0002] Inertial confinement fusion is expected to become an effective way to cleanly utilize fusion energy in the future. It has important research value in the fields of people's livelihood, economy and military. The United States, China, Russia and other major countries have carried out a series of in-depth researches on laser inertial confinement fusion. [0003] In the research of laser inertial confinement fusion, in order to study the physical phenomena in the experiment, pinhole imaging is a commonly used X-ray imaging method. The pinhole camera and framing camera based on the principle of pinhole imaging are widely used in laser fusion research. Therefore, it is of great significance to improve the resolution of pinhole imaging. [0004] When the X-ray energy is very str...

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Problems solved by technology

[0004] When the x-ray energy is very strong, in order to protect the imaging equipment from being damaged, it is usually necessary to add a metal filter in front of the imaging equipment, but this method will destroy the spectral information of the incident light, resulting in distortion of the recorded information

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