Sub-terahertz Imaging Diffuse Reflector Segmentation
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Solution Overview
Problem
Imaging apparatuses that capture images of targets using sub-terahertz waves face challenges in efficiently irradiating targets with these waves, which affects image quality.
Innovation Solution
The proposed imaging apparatus includes a diffuse-reflector that covers the imaging space and diffusely reflects sub-terahertz waves, a light source that emits sub-terahertz waves onto the reflector, and a detector that receives the reflected waves. The diffuse-reflector has a visible light transmissive area, allowing visible light to enter the imaging space and reducing the cooped-up feeling for subjects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a diffuse-reflector is used to efficiently irradiate the imaging target with sub-terahertz waves, then image quality is improved, but visible light cannot enter the imaging space causing a cooped-up feeling for subjects
Solution Approach 1:
The reflector is segmented into two functional regions: a first region that diffusely reflects sub-terahertz waves to improve image quality, and a second region that transmits visible light to prevent the cooped-up feeling. This segmentation allows each region to perform its specific function without interfering with the other.
Solution Approach 2:
Different regions of the reflector are assigned different properties: the first region has high reflectivity for sub-terahertz waves, while the second region has high transmissivity for visible light. This local differentiation of properties enables simultaneous achievement of both image quality improvement and comfort for subjects.
2Object-affected harmful factors
If the reflector reflects visible light, then the cooped-up feeling is reduced, but sub-terahertz wave irradiation efficiency decreases
Solution Approach 1:
The reflector is divided into a first region for sub-terahertz wave reflection and a second region for visible light transmission. This segmentation ensures that sub-terahertz wave irradiation efficiency is maintained in the first region while visible light transmission is achieved in the second region.
Solution Approach 2:
The first region is designed with properties to efficiently reflect sub-terahertz waves, while the second region is designed with properties to transmit visible light. This local quality differentiation allows the reflector to simultaneously support both functions without compromise.
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 enables efficient irradiation of the imaging target with sub-terahertz waves, improving image quality while also reducing the cooped-up feeling for subjects by allowing visible light to enter the imaging space.
Implementation Method 1
a reflector which diffusely reflects a sub-terahertz wave
Implementation Method 2
a visible light transmissive area which transmits visible light
Data Source
AI summary
An imaging apparatus includes: a diffuse-reflector which covers an imaging space on a pathway that a human passes through, from at least a side out of both sides of the pathway, and includes a reflector which diffusely reflects a sub-terahertz wave; a light source which emits a sub-terahertz wave onto the reflector; and a detector which receives a reflected wave of the sub-terahertz wave which has been emitted from the light source, diffusely reflected by the reflector, and reflected by the human, and detects an intensity of the reflected wave received. The diffuse-reflector includes a visible light transmissive area which transmits visible light.