Ceramic-Insulated Micro Focus X-Ray Tube for Close-Target Imaging
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Solution Overview
Problem
Existing X-ray tubes with glass tube insulation structures fail to ensure quality features when using a nano electric field emitter, particularly due to insulation and high-voltage issues that prevent the subject from being adjacent to the anode target.
Innovation Solution
A micro focus X-ray tube structure is developed using a ceramic insulator and metal electrode, bonded in a high temperature through vacuum brazing, which minimizes the distance between the subject and the X-ray target by using a positive electrode anode and a grounded window electrode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a glass tube insulation structure is used in an X-ray tube, then the insulation between high-voltage anode and ground is achieved, but the quality features are not ensured when using a nano electric field emitter
Solution Approach 1:
The patent changes the insulation material from glass to ceramic, fundamentally altering the material parameter to achieve both high-voltage insulation reliability and compatibility with nano electric field emitters. The ceramic material provides superior electrical insulation properties and thermal stability compared to glass, enabling reliable operation at high voltages while maintaining manufacturing precision for nano-scale emitters.
Solution Approach 2:
The patent employs a composite structure combining ceramic insulation tube with metal components (anode, cathode, housing). This composite approach leverages the electrical insulation properties of ceramic and the mechanical/thermal properties of metal, creating a system that simultaneously achieves reliable high-voltage insulation and precise manufacturing capability for nano electric field emitters.
2Manufacturing precision
If the subject is placed adjacent to the anode target to obtain sufficient image magnification rate and X-ray dose, then imaging quality is improved, but insulation and high-voltage issues prevent this configuration
Solution Approach 1:
The ceramic insulation tube serves as an intermediary component that enables the subject to be placed adjacent to the anode target while maintaining necessary electrical insulation. This mediator allows close positioning for optimal imaging geometry without compromising high-voltage insulation, thus achieving both improved image magnification and maintained insulation reliability.
3Adaptability or versatility
If a window structure is added to allow subject access near the anode, then imaging capability is improved, but the device complexity increases
Solution Approach 1:
The ceramic insulation tube performs multiple functions simultaneously: it provides high-voltage insulation, serves as a structural support for the anode and other components, and enables the window structure for subject access. By integrating these functions into a single component, the patent improves imaging capability while minimizing the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the quality of X-ray imaging by ensuring a sufficient X-ray dose and image magnification rate while maintaining a robust insulation structure suitable for nano electric field emitters.
Implementation Method 1
a ceramic insulation tube bonded in a high temperature to a surface of the head
Implementation Method 2
an electron gun bonded to a side surface of the head and comprising a nano electric field emitter
Implementation Method 3
a plate-shaped target included by the anode
Data Source
AI summary
A micro focus X-ray tube is provided. The micro focus X-ray tube has a bonding structure in which a ceramic and a metal without an exhaust pipe are stacked by using a nano electric field emitter of an excellent feature.