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US 12,306,292 B2Granted
Imaging apparatus including sub-terahertz wave reflective member
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKazuhiro Yamada, Yosuke Asai, Hiroshi Yamaguchi, Katsuhiko Hayashi
Life of this patent
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Abstract
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.
Claims20
An imaging apparatus comprising:
- a diffuse-reflector which covers an imaging space on a pathway that an imaging target 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 imaging target, and detects an intensity of the reflected wave received,
- wherein the diffuse-reflector includes, in a region in which the reflector is located, a visible light transmissive area which transmits visible light, and transmits visible light through the visible light transmissive area,
- the reflector includes:
- a sub-terahertz wave reflective member having a sheet shape which diffusely reflects a sub-terahertz wave and transmits visible light;
- and
- two visible light transmissive members which transmit a sub-terahertz wave and visible light,
- at least one imaging space side main surface out of two main surfaces of the sub-terahertz wave reflective member is a concave-convex surface,
- both the two main surfaces of the sub-terahertz wave reflective member are each covered by a corresponding one of the two visible light transmissive members,
- the two visible light transmissive members each include a flat surface at a side of the visible light transmissive member, the side being opposite to a sub-terahertz wave reflective member side of the visible light transmissive member, and
- the flat surface of each of the two visible light transmissive members constitutes a surface of the reflector.
10 more elements
An imaging apparatus comprising:
- a diffuse-reflector which covers an imaging space on a pathway that an imaging target 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 imaging target, and detects an intensity of the reflected wave received,
- wherein the reflector reflects visible light from the imaging space,
- the reflector includes:
- a sub-terahertz wave reflective member having a sheet shape which diffusely reflects a sub-terahertz wave;
- a visible light diffuse-reflector which transmits a sub-terahertz wave and diffusely reflects visible light;
- and
- a cover member,
- wherein at least an imaging space side main surface out of two main surfaces of the sub-terahertz wave reflective member is a concave-convex surface,
- the imaging space side main surface of the sub-terahertz wave reflective member out of the two main surfaces is covered by the visible light diffuse-reflective member,
- the visible light diffuse-reflective member includes a visible light diffuse-reflective surface which is flat and diffusely reflects visible light, at a side of the visible light diffuse-reflective member, the side being opposite to a sub-terahertz wave reflective member side of the visible light diffuse-reflective member,
- the main surface located at a side of the sub-terahertz wave reflective member out of the two main surfaces is covered by the cover member, the side being opposite to the imaging space side of the sub-terahertz wave reflective member,
- the cover member includes a flat surface at a side of the cover member, the side being opposite to the sub-terahertz wave reflective member side of the cover member, and
- the visible light diffuse-reflective surface and the flat surface each constitute a surface of the reflector.
13 more elements
An imaging apparatus comprising:
- a diffuse-reflector which covers an imaging space on a pathway that an imaging target 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 imaging target, and detects an intensity of the reflected wave received,
- wherein the reflector reflects visible light from the imaging space,
- wherein the reflector includes:
- a sub-terahertz wave reflective member having a sheet shape which diffusely reflects a sub-terahertz wave;
- a visible light mirror-reflective member which transmits a sub-terahertz wave and mirror-reflects visible light;
- and
- a cover member,
- wherein at least an imaging space side main surface out of two main surfaces of the sub-terahertz wave reflective member is a concave-convex surface,
- an imaging space side main surface of the sub-terahertz wave reflective member out of the two main surfaces is covered by the visible light mirror-reflective member,
- the visible light mirror-reflective member includes a visible light mirror-reflective surface which is flat and mirror-reflects visible light, at a side of the visible light mirror-reflective member, the side being opposite to a sub-terahertz wave reflective member side of the visible light mirror-reflective member,
- a main surface located at a side of the sub-terahertz wave reflective member out of the two main surfaces is covered by the cover member, the side being opposite to the imaging space side of the sub-terahertz wave reflective member,
- the cover member includes a flat surface at a side of the cover member, the side being opposite to the sub-terahertz wave reflective member side of the cover member, and
- the visible light mirror-reflective surface constitutes an imaging space side surface of the reflector.
13 more elements
Dependencies are inferred from the claim text.