A novel lobster-eye imaging system based on Schmidt-type objective for X-ray-backscattering inspection

Abstract

This paper presents a novel lobster-eye imaging system for X-ray-backscattering inspection. The system was designed by modifying the Schmidt geometry into a treble-lens structure in order to reduce the resolution difference between the vertical and horizontal directions, as indicated by ray-tracing simulations. The lobster-eye X-ray imaging system is capable of operating over a wide range of photon energies up to 100 keV. In addition, the optics of the lobster-eye X-ray imaging system was tested to verify that they meet the requirements. X-ray-backscattering imaging experiments were performed in which T-shaped polymethyl-methacrylate objects were imaged by the lobster-eye X-ray imaging system based on both the double-lens and treble-lens Schmidt objectives. The results show similar resolution of the treble-lens Schmidt objective in both the vertical and horizontal directions. Moreover, imaging experiments were performed using a second treble-lens Schmidt objective with higher resolution. The results show that for a field of view of over 200 mm and with a 500 mm object distance, this lobster-eye X-ray imaging system based on a treble-lens Schmidt objective offers a spatial resolution of approximately 3 mm.

Bioinspired Artificial Eyes: Optic Components, Digital Cameras, and Visual Prostheses

“…Subsequent fabrication steps such as transferring microreflecting optics to an elastomeric polymer and deforming the overall layers into a hemisphere produce artificially curved reflecting superposition optics (Figure e, inset); this allows optical features such as a wide FoV, low chromatic aberration, and enhanced light sensitivity. In particular, a recent study achieved a wavelength‐free imaging property of the reflecting superposition type by applying a 1D layout of reflecting superposition optics in the X‐ray region (Figure f) . Such remarkable imaging features of the reflecting compound eye optics can be exploited in a wide range of applications that employ the nonvisible range, for which window materials are scarce.…”

“…(f) X‐ray‐backscattering inspection based on a 1D reflecting superposition eye and obtained images. Reproduced with permission . Copyright 2016, American Institute of Physics.…”

Application of Serpent Monte Carlo Code for Modeling of Non-destructive Systems Based on Backscattered X-Rays

“…Аналіз зображень, отриманих при використанні рентгенівського випромінювання, широко застосовується в медицині [1]- [3], в системах неруйнівного контролю [4], [5] та в системах безпеки [6]- [8]. Найчастіше в таких системах детектор випромінювання знаходиться поза досліджуваним об'єктом, утворюючи таким чином ланцюжок: джерело випромінювання -досліджуваний об'єкт -детектор.…”