

SpotHole High Aspect Ratio Pinholes
A series of high aspect ratio and ultra-high aspect ratio pinholes/apertures, specifically designed for medium- and high-energy X-ray and gamma-ray imaging, detection, and analysis applications. Featuring high-atomic-number absorbing materials, these products deliver excellent cutoff performance and extremely low background interference, providing stable and reliable core component support for high-energy imaging systems, pinhole cameras, and diffraction and spectroscopy analysis equipment.

Introduction
High-performance core components for medium- to high-energy X-ray and gamma-ray applications
High aspect ratio | High absorption capability | Low stray background | Customization supported
The high-aspect-ratio and ultra-high-aspect-ratio pinhole/aperture series is specifically designed for medium- to high-energy X-ray and gamma-ray imaging, detection, and analysis applications. Utilizing high-atomic-number absorbing materials, these products deliver excellent cutoff performance and extremely low background interference, providing stable and reliable core component support for high-energy imaging systems, pinhole cameras, and diffraction and spectroscopic analysis equipment.
Product Advantages
Ultra-High Aspect Ratio
Aspect ratio greater than 100, effectively enhancing beam confinement capability and imaging quality.
High-atomic-number absorbing materials
Gold and high-Z metal materials are used to effectively suppress stray transmission of high-energy radiation.
Multiple aperture size options
Available in a variety of aperture sizes from 15 μm to 200 μm to meet different system design requirements.
Custom development supported
Custom specifications in size, thickness, material, and structure are supported.
Typical Applications
High-Energy X / Gamma-Ray Imaging
High-Energy X / Gamma-Ray Pinhole Camera
High-Energy X / Gamma-Ray Diffraction
Entrance Aperture for High-Energy X-Ray Spectrometers
Performance Highlights
Under test conditions of 50 kV to 100 kV with a fixed source power of 15 W, both the SpotUH and SpotHole series demonstrate good cutoff performance and low background characteristics. Test data show that stray background single-pixel counts around the high-intensity spot remain at a low level, reflecting the products' excellent shielding and imaging support capability in high-energy applications.


Specifications
Compact pinhole solution for high-energy X-ray applications:
Model | SpotHole-15 | SpotHole-20 | SpotHole-30 | SpotHole-50 | SpotHole-100 | SpotHole-150 |
Aperture size | 15±1.5µm | 20±1.5µm | 30±1.5µm | 50±2µm | 100±3µm | 150±3µm |
Pinhole size | 0.7cm x 0.7cm | |||||
Thickness | > 400µm | |||||
Absorbing material | Au | |||||
Ultra-high aspect ratio series SpotUH:
Suitable for applications requiring higher cutoff performance and higher energy.
Model | SpotUH-20 | SpotUH-60 | SpotUH-100 | SpotUH-150 | SpotUH-200 |
Aperture size | 20±5µm | 60±5µm | 100±5µm | 150±10µm | 200±10µm |
Pinhole size | 4.5cm x 3.1cm (Customizable) | ||||
Thickness | 2000-7000µm (Typical value) (Other thicknesses available upon request) | ||||
Absorbing material | HighZMetal | ||||

