Radio wave sensor and luminaire
First Claim
1. A radio wave sensor, comprisinga transmitting antenna configured to radiate radio waves,a receiving antenna configured to receive incoming radio waves, anda housing that is composed of dielectric material and faces the transmitting and receiving antennas,the housing having a first part that faces the transmitting antenna, a second part that faces the receiving antenna, and a third part between the first and second parts, andin a facing direction in which a base of the housing faces the transmitting and receiving antennas, respective thickness of the first and second parts being thicker than thickness of the third part.
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Accused Products
Abstract
A radio wave sensor includes a transmitting antenna configured to radiate radio waves, a receiving antenna configured to receive incoming radio waves, and a housing that is composed of dielectric material and faces the transmitting and receiving antennas. The housing has a first part that faces the transmitting antenna, a second part that faces the receiving antenna, and a third part between the first and second parts. In a facing direction in which a bottom board of the housing faces the transmitting and receiving antennas, respective thickness of the first and second parts is thicker than thickness of the third part.
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Citations
14 Claims
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1. A radio wave sensor, comprising
a transmitting antenna configured to radiate radio waves, a receiving antenna configured to receive incoming radio waves, and a housing that is composed of dielectric material and faces the transmitting and receiving antennas, the housing having a first part that faces the transmitting antenna, a second part that faces the receiving antenna, and a third part between the first and second parts, and in a facing direction in which a base of the housing faces the transmitting and receiving antennas, respective thickness of the first and second parts being thicker than thickness of the third part.
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12. A radio wave sensor, comprising
a transmitting antenna that includes a flat transmitting element, and is configured to radiate radio waves from a transmitting surface of the flat transmitting element, a receiving antenna that includes a flat receiving element, and is configured to receive incoming radio waves onto a receiving surface of the flat receiving element, and a housing that is composed of dielectric material, the housing including a flat front board provided forward of the transmitting and receiving surfaces, and accommodating the transmitting and receiving antennas with the transmitting and receiving surfaces facing an inner surface of the flat front board, the flat front board having a first part and a second part that face the transmitting surface and the receiving surface, respectively, and a third part between the first and second parts, and in a facing direction in which the flat front board faces the transmitting and receiving antennas, respective thickness of the first and second parts being thicker than thickness of the third part.
Specification