Semiconductor Light Source for Uniform X-ray Field Indication
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Solution Overview
Problem
Conventional X-ray diagnosis apparatuses face challenges with light source devices having short service life and poor time response, making it difficult for operators to identify the X-ray irradiation field due to non-uniform brightness and unclear boundaries, especially when using halogen lamps or multiple semiconductors.
Innovation Solution
A light source device comprising a light-emitting part with semiconductor lasers or LEDs, a reflective part with a parabolic surface to collect and direct light, and a light irradiation part that outputs light of uniform brightness, allowing for clear visualization of the X-ray irradiation field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a halogen lamp is used as the light source device, then the light emission point can simulate an X-ray focal point, but the service life is short and the time response is poor
Solution Approach 1:
The patent changes the fundamental parameter of the light source from halogen lamp to light-emitting semiconductor (LED or semiconductor laser), transitioning from thermal radiation to electroluminescence mechanism, thereby achieving long service life and fast response while maintaining adequate brightness
Solution Approach 2:
The patent replaces the mechanical/thermal light generation system (halogen lamp with filament heating) with a semiconductor-based electroluminescence system, eliminating the limitations of thermal response time and filament lifespan
2Duration of action of stationary object
If multiple light-emitting semiconductors are used to increase brightness, then the service life is extended, but the light irradiation field suffers from non-uniform brightness
Solution Approach 1:
The patent segments the light-emitting semiconductors into multiple individual elements arranged in an array, where each semiconductor has its own light emission point, allowing independent control and uniform distribution of light across the irradiation field
Solution Approach 2:
The patent merges multiple light emission points from individual semiconductors into a unified light irradiation field through optical integration, achieving both high brightness and uniformity by combining the emissions in a controlled manner
3Duration of action of stationary object
If multiple light-emitting semiconductors are used, then the service life is extended, but the boundary of the light irradiation field becomes unclear
Solution Approach 1:
The patent applies local quality by ensuring each light-emitting semiconductor provides a localized point source of light with sufficient intensity, and the collective arrangement of these point sources creates a well-defined irradiation field boundary that is easily identifiable
Solution Approach 2:
The patent introduces an optical integrating element as an intermediary between the multiple semiconductor light sources and the irradiation field, which uniformizes the light distribution while maintaining clear boundary definition through controlled optical pathways
4Device complexity
If a halogen lamp is used, then the light source can be simple in structure, but the operator has difficulty in knowing the operating state due to poor time response
Solution Approach 1:
The patent replaces the thermal-inertia-based halogen lamp system with a semiconductor electroluminescence system that responds instantaneously to electrical control signals, enabling real-time indication of operating state without mechanical or thermal delay
Solution Approach 2:
The patent utilizes the ability of light-emitting semiconductors to respond rapidly to periodic or pulsing electrical signals, allowing the light intensity to be modulated according to the operating state for clear visual feedback to the operator
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
The solution provides a light source device capable of emitting light of sufficient and uniform brightness, enabling clear identification of the X-ray irradiation field and improving the operator's understanding of the X-ray diagnosis apparatus's operating state.
Implementation Method 1
The light-emitting part includes a semiconductor laser or a light-emitting diode
Implementation Method 2
The light source device includes a reflective part
Data Source
AI summary
An X-ray diagnosis apparatus includes an X-ray irradiator, a light source device, and a light emission control unit. The X-ray irradiator emits X-rays to a subject. The light source device includes a light-emitting part and a light irradiation part. The light-emitting part includes a semiconductor laser or a light-emitting diode for emitting light. The light irradiation part emits the light as output light indicating the irradiation field of the X-rays. The light emission control unit controls the light-emitting part according to the operating state of the X-ray irradiator.