Decorative member for vehicle
US-9533627-B2 · Jan 3, 2017 · US
Radio-wave transmitting cover and method for setting thickness of radio-wave transmitting cover
US10693224B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10693224-B2 |
| Application number | US-201715787144-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 18, 2017 |
| Priority date | Oct 24, 2016 |
| Publication date | Jun 23, 2020 |
| Grant date | Jun 23, 2020 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A radio-wave transmitting cover is configured to be arranged in the path of the radio wave of a radio-wave radar device. The thickness of the cover is set to a reference thickness at a reference position where the incident angle of the radio wave from the radio-wave radar device is 0°. The reference thickness is set to a value obtained by multiplying half of the wavelength of the radio wave by an integer. In the area around the reference position, the thickness of the cover is gradually changed such that the greater the distance from the reference position, the greater becomes the difference by which the thickness of the cover is larger than the reference thickness.
First claim
Opening claim text (preview).
The invention claimed is: 1. A radio-wave transmitting cover, which is configured to be arranged in a path of a radio wave of a radio-wave radar device, wherein a thickness of the cover is set to a reference thickness at a reference position where an incident angle of the radio wave from the radio-wave radar device is 0° , the reference thickness is set to a value obtained by multiplying half of a wavelength of the radio wave by an integer so that a radio wave attenuation, which changes periodically according to the thickness of the cover, has a local minimum, and in an area around the reference position, the thickness of the cover is gradually changed such that the greater a distance from the reference position, the greater becomes a difference by which the thickness of the cover is larger than the reference thickness, such that the radio wave attenuation, which changes periodically according to the thickness of the cover, has a local minimum, wherein the cover includes a base, which has a back on which the radio wave from the radio-wave radar device is incident, and a front-side member, which is provided on a surface on a side opposite to the back of the base, and a small curvature portion in which a curvature is partially reduced is provided at an interface between the base and the front-side member. 2. A method for setting a thickness of a radio-wave transmitting cover, which is configured to be arranged in a path of a radio wave of a radio-wave radar device, the method comprising: setting the thickness at each position of the cover based on the following (Expression 1) to (Expression 8) that are satisfied among an incident angle at the position of a radio wave from the radio-wave radar device, the thickness of the cover, and an attenuation of the radio wave, such that the radio wave attenuation, which changes periodically according to the thickness of the cover, has a local minimum attenuation=|2×transmittance| (Expression 1) transmittance=−20 log τ (Expression 2) τ = ( 1 - γ 2 ) exp ( - φ L 0 - j φ ) 1 - γ 2 exp ( - 2 φ L 0 - 2 j φ ) ( Expression 3 ) φ = 2 π d λ ( ɛ ɛ 0 - sin 2
Assignees
Inventors
Classifications
Constructional details of housings, e.g. form, type, material or ruggedness · CPC title
Constructional details for solid-state radar subsystems · CPC title
in the front of the vehicles · CPC title
- H01Q1/422Primary
comprising two or more layers of dielectric material (H01Q1/425 takes precedence) · CPC title
particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10693224B2 cover?
- A radio-wave transmitting cover is configured to be arranged in the path of the radio wave of a radio-wave radar device. The thickness of the cover is set to a reference thickness at a reference position where the incident angle of the radio wave from the radio-wave radar device is 0°. The reference thickness is set to a value obtained by multiplying half of the wavelength of the radio wave by …
- Who is the assignee on this patent?
- Toyoda Gosei Kk
- What technology area does this patent fall under?
- Primary CPC classification H01Q1/422. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 23 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).