Display light projecting optical system
US-2017184844-A1 · Jun 29, 2017 · US
Vehicle cabin interior lighting device
US10457202B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10457202-B2 |
| Application number | US-201816177777-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2018 |
| Priority date | Dec 26, 2017 |
| Publication date | Oct 29, 2019 |
| Grant date | Oct 29, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
There is provided a vehicle cabin interior lighting device including: a light source that emits light; a polarizing member that converts the emitted light into p-polarized light; and a projection portion that is provided at an upper portion of an instrument panel, and onto which the p-polarized light is projected, and that reflects the projected p-polarized light without changing its polarization characteristics, and that causes the projected p-polarized light to be incident on a front windshield glass at Brewster's angle.
First claim
Opening claim text (preview).
What is claimed is: 1. A vehicle cabin interior lighting device comprising: a light source that emits light; a polarizing member that converts the emitted light into p-polarized light; and a projection portion that is provided at an upper portion of an instrument panel, and onto which the p-polarized light is projected, and that reflects the projected p-polarized light without changing its polarization characteristics, and that causes the projected p-polarized light to be incident on a front windshield glass at Brewster's angle. 2. The vehicle cabin interior lighting device of claim 1 , wherein the polarizing member is disposed in proximity to the light source. 3. The vehicle cabin interior lighting device of claim 1 , wherein the projection portion is made to be a portion of a vertical wall portion that is formed so as to extend in a vehicle transverse direction at the upper portion of the instrument panel. 4. The vehicle cabin interior lighting device of claim 1 , wherein the projection portion is made to be a screen that is provided at a vertical wall portion that is formed so as to extend in a vehicle transverse direction at the upper portion of the instrument panel.
Assignees
Inventors
Classifications
Interior vehicle lighting devices · CPC title
for producing polarised light · CPC title
Lighting devices intended for fixed installation (F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00) · CPC title
Special features or arrangements of vehicle interior lamps · CPC title
characterised by optical aspects · CPC title
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Frequently asked questions
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- What does patent US10457202B2 cover?
- There is provided a vehicle cabin interior lighting device including: a light source that emits light; a polarizing member that converts the emitted light into p-polarized light; and a projection portion that is provided at an upper portion of an instrument panel, and onto which the p-polarized light is projected, and that reflects the projected p-polarized light without changing its polarizati…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60Q3/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 29 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).